Synthesis of Nano Bioactive Glass Or Bioglass

Total Page:16

File Type:pdf, Size:1020Kb

Synthesis of Nano Bioactive Glass Or Bioglass Vol. 10, 2020, pp. 01~32 ISSN: 2605-6895 REVIEW: SYNTHESIS OF NANO BIOACTIVE GLASS OR BIOGLASS Silvia Widiyanti1, Elba Faradisa1, Ahmad Mauludin Mubarok1, Nisa Fauziyyah1, Hari Agung Triadi1, Muhammad Rifki Nawawi1, Asep Bayu Dani Nandiyanto1 1Departemen Pendidika Kimia, Fakultas Pendidikan Matematika dan Ilmu Pengetahuan Alam, Universitas Pendidikan Indonesia, Bandung Indonesia Article Info ABSTRACT Article history: Currently, bioglass nanoparticles are one of the most developed nanotechnology materials due to their bioactive properties and Received 18/10/2020 mechanical work which can be widely applied, especially in Accepted 26/11/2020 biomedical fields such as bone tissue engineering and orthopedic implants. Writing this paper is aimed at conducting a literature review on the synthesis of bioglass nanoparticles. In this paper, we review 40 Keyword: papers from 2001 to 2020. From several papers that have been Nanoparticle reviewed, several methods can be used to make bioglass nanoparticles, Bioglass including melt quenching, sol-gel, sol-gel with acid media, sol-gel Method of synthesis using the OMC 3D template OMC, sol-gel using the DDA template, Characterization sol-gel using the P123 pluronic copolymer template, sol-gel with Cu doping, sol-gel using silver ion and fluoride doping, sol-gel from rice husk, microwave irradiation, flame synthesis, and microemulsion. The best method of nanoparticles bioglass synthesis is sol-gel using OMC 3D template for produce particles with a size of about 300 nm which is smaller than the size of the OMC 3D template, the surface area of 26 m2/g, and no agglomeration of particles observed by TEM and DLS . Corresponding Author: Adress Email: [email protected] Phone: +6281394340884 1 S.Widiyanti et al. RHAZES: Green and Applied Chemistry, Vol. 10, 2020, 01~32 1. INTRODUCTION Bioglass nanoparticles are one of the most widely developed nanotechnology materials because of their bioactive properties and mechanical performance which can be widely applied in bone tissue engineering [1], bone graft materials for bioactive coating on orthopedic implants [2], and as filler particles in biopolymer composites [3,4]. Bioglass nanoparticles are very important in the biomedical field because of their unique characteristics, namely osteoconductivity and osteoinductivity, and under certain conditions, they are also angiogenic and bactericidal [5]. Bioglass can react with physiological fluids to form strong bonds with the bone. The bonding will be followed by the release of ions for the formation of the hydroxycarbonatepatite (HCA) layer and the biological interaction of collagen with the glass surface so that these various reactions are very beneficial in the healing process of bone fractures [6]. The combination of bioglass nanoparticles with a polymer system is capable of producing a nanocomposite that has the potential for use in orthopedic applications, including tissue engineering and tissue regeneration. The composite modification that is biodegradable with polymers also allows the production of a substrate that can trigger the biomineralization process [7]. Several methods can be done to make bioglass nanoparticles, such as the melt quenching method, sol-gel [8], flame synthesis [9], microwave irradiation [10], and microemulsion [11]. Two main processes that can synthesize this biomaterial are the melt quenching method and sol-gel. The melt quenching method can synthesize bioglass in a short time, about several hours, by heating the initial precursors to high temperatures and following special rules. Although the melt technique is a fast method, the resulting glass usually has a low specific surface area value. According to previous research, the specific surface area value is a key factor affecting bioglass bioactivity. Increasing the specific surface area can increase the surface reaction between the artificial material and the physiological environment, thereby increasing the formation of the HA layer. The sol-gel method can synthesize bioglass at lower temperatures, has a porous structure, and a high specific surface area value which can increase the bioactivity of synthetic materials [12]. Many papers discuss the synthesis of bioglass nanoparticles, but a limited number of papers review the synthesis of bioglass nanoparticles. Therefore, this paper aims to conduct a literature review on the synthesis of bioglass nanoparticles. We review 60 papers from 2001 to 2020 regarding the synthesis of bioglass nanoparticles using the melt quenching method, sol-gel, sol-gel using acid media, sol-gel using the OMC 3D template, sol-gel using 2 S.Widiyanti et al. RHAZES: Green and Applied Chemistry, Vol. 10, 2020, 01~32 the DDA template, sol-gel using the template. pluronic copolymer P123, sol-gel with Cu doping, sol-gel with silver ion and fluoride doping, sol-gel using rice husk, microwave irradiation, flame synthesis, and microemulsion. The comparison of these methods is presented in Table 1 below. Table 1. Materials, research groups, methods, and research results of bioglass nanoparticle synthesis Material Operating Reagents Method Result Reference Condition Phosphorus, Heating time & 40% P2O5 , 20% Melt Bioglass Algarni et al., pentoxide, sodium temperature Na2O, 10% quenching nanoparticles 2019 oxide, calcium Melting set: Ca(OH)2, 20% have a regular o hydroxide, 1300 C, 40 minutes CaCl2 , 8% ZnO, round shape calcium oxide, Anaeling set : 10% TiO2 and different zinc oxide, 380oC, 3 hours sizes, titanium oxide 8.2< size <15.3 nm Silicon dioxide, Heating time & 53.0 SiO2:23.0 Melt Bioglass Shams et al., sodium carbonate, temperature Na2CO3:20.0 quenching nanoparticles 2018 calcium Melting set: CaCO3:4.0 P2O5 with a wide carbonate, 1400oC, 3 hours size phosphorus Drying process: distribution, pentoxide 80℃, 5 hours 100< size <800 nm 3 S.Widiyanti et al. RHAZES: Green and Applied Chemistry, Vol. 10, 2020, 01~32 TEOS, ethanol, Heating time & 4.054 g TEOS; Sol-gel Bioglass Kumar et al., calcium nitrate Temperature 2.372 g calcium nanoparticles 2020 tetrahydrate, Mixing Reagen : 30 nitrate with different phosphate minutes, tetrahydrate; size, 200< pentoxide temperature room 0.267 g phosphate size <500, and ammonia solution Drying: 100℃ pentoxide a surface area of 10.4 m 2 / g, but there is agglomeration . TEOS, nitric acid, Stirring : 4 hours - Sol-gel Bioglass with Durgalakshmi alcohol, Storing the sol gel : with acid most particle et al., 2014 phosphoric acid, 70 oC, 24 hours medium sizes less than calcium nitrate, Drying Powder: 100 nm, and sodium hydroxide 600 oC, 2 hours there are some particles with sizes over 200 nm due to agglomeration . 4 S.Widiyanti et al. RHAZES: Green and Applied Chemistry, Vol. 10, 2020, 01~32 TEOS, TEP, Storing the sol : 40 37.81 mL TEOS; Sol-gel Bioglass with Ray, S., & calcium nitrate oC, 3 days 2.863 mL TEP; with acid sufficiently Dasgupta, S., tetrahydrate, Drying the xerogel 18.379 mg medium agglomerated 2020 sodium nitrate, : calcium nitrate and spherical nitric acid 450 oC, 3 hours tetrahydrate; 5.92 morphology. T mg sodium he particle size nitrate; 100 mL is 25< size< 50 nitric acid 1 M nm. TEOS, TEP, HCl, Immersing template 9.4 g TEOS; 1.1 g Sol-gel The particle Ji et al., 2017 absolute ethanol 3D OMCin sol-gel: TEP; 0.3 g HCl uses the size was about (ETOH), room temperature, 2M; 7.5 g EtOH; OMC 3D 300 nm, deionized water, 8 hours 0.8 g DW; 6.4 g template smaller than calcium nitrate Sintering: 600℃, 1 calcium nitrate the template tetrahydrate, hour tetrahydrate size and a template 3D OMC surface area of 26 m2/g. No particle agglomeration . The particles are well dispersed in a biopolymer matrix such as gelatin. In addition, the templates used contribute good 5 S.Widiyanti et al. RHAZES: Green and Applied Chemistry, Vol. 10, 2020, 01~32 mechanical properties and bioactivity. Template DDA, Stirring: room 4 g template Sol-gel Bioglass Chen et al., ethanol water temperature, 3 DDA; 100 mL uses the nanoparticles 2019 mixture, TEOS, hours ethanol-water DDA have a TEP, CN, DW Drying: room mixture (1:4); 16 template monodisperse temperature, 24 mL TEOS; 1.22 d spherical hours mL TEP; 3.39 g shape with a Sintering: 650oC, 3 CN diameter hours about 800 nm. TEOS, TEP, Storing to form gel: Nitric acid 2 M Sol-gel Bioglass Vuong, B., & water, nitric acid, room temperature, uses the nanoparticles My Thanh, calcium nitrate 3 days P123 have spherical N., 2020 tetrahydrate, Storing the gel: pluronic morphology. pluronic 60℃, 2 days copolymer The pore size copolymer P123 Drying the gel : template and shape are 100oC, 1 day fairly uniform Burning template with pore P123: 700℃, 3 sizes hours 5.5<size< 7 nm. 6 S.Widiyanti et al. RHAZES: Green and Applied Chemistry, Vol. 10, 2020, 01~32 TEOS, calcium Heating rate 9 mL TEOS Sol-gel The pore sizes Luo et al., nitrar tetrahydrate, 1℃/minutes with (99%); 1 g with Cu of the 2020 copper nitrate two isothermal calcium nitrate doping nanobioglass trihydrate, TEP, steps of 300℃ for 1 tertahydrate is in the range ethanol-water hour and 650℃ for (99%); 0.5 g of mixture, BC airgel 5 hours calcium nitrate 9.0<size<11.4 trihydrate (99%); nm. 1 mL TEP (99%); ethanol-water mixture (9:1) TEOS, nitric acid, Heating gel: 14.8 g TEOS; 30 Sol-gel Bioglass Kargozar et TEP, calcium 120oC, 24 hours mL nitric acid with silver nanoparticles al., 2019 nitrate Calcining: 2M; and are fairly tetrahydrate, 700℃, 1 hour fluoride irregular in calcium fluoride, ion doping shape and less silver nitrate than 100 nm in size. Rice husk, Drying: 80℃, 24 HCl 10%; 100 mL Sol-gel Bioglass with Durgalakshmi hydrochloric acid, hours NaOH 24.35%; uses rice uniform et al., 2020 o sodium Sintering : 600 C, husks spherical hydroxide, 4 hours particle shape sodium silicate, and size 25 calcium and nm before phosphorus sintering. precursors 7 S.Widiyanti et al.
Recommended publications
  • Calcium Nitrate Calcium Nitrate Is a Highly Soluble Source of Two Plant Nutrients
    No. 27 Calcium Nitrate Calcium nitrate is a highly soluble source of two plant nutrients. Its high solubility makes it popular for supplying an immediately available source of nitrate and calcium directly to soil, through irrigation water, or with foliar applications. Production: Phosphate rock is acidified with nitric acid to form a mixture of phosphoric acid and calcium nitrate during the nitrophosphate fertilizer manufacturing process. Ammonia is then added to neutralize excess acidity. Calcium nitrate crystals precipitate via a temperature gradient and are separated as the mixture is cooled. With the ammonia addition and crystallization, a double salt is formed [5 Ca(NO3)2•NH4NO3•10 H2O, referred to as 5:1:10 double salt] and is considered the commercial grade of calcium nitrate. Hence, small amounts of ammonical N may also be present in this grade of calcium nitrate. Calcium nitrate is also manufactured by reacting nitric acid with crushed limestone forming either the 5:1:10 double salt or calcium nitrate tetrahydrate (Ca(NO3)2•4 H2O). The latter product is often produced as a wet crystal or a mesh and is subject to specific regulation with respect to handling and safety. Prilling and granulating are the most common methods of making particles ready for field use. Calcium nitrate is very hygroscopic (absorbs water from the air), so when intended for soil application, proprietary coatings are applied to minimize moisture uptake. Calcium nitrate intended for hydroponics or fertigation does not contain a conditioner, or it may be sold
    [Show full text]
  • Effects of Different Sources of Fertilizer Nitrogen on Growth and Nutrition of Western Hemlock Seedlings
    Effects of Different Sources U.S. Department of Agriculture Forest Service Pacific Northwest Forest of FertiIizer Nitrogen and Range Experiment Station Research Paper PNW-267 on Growth and Nutrition oJ February 1980 Western Hemlock Seedlings ---. --_. ------------------------ , I _J Authors M. A. RADWAN is Principal Plant Physiologist and DEAN S. DeBELL is Principal Silviculturist with the Forest Service, u.S. Department of Agriculture, Pacific Northwest Forest and Range Experiment Station, Forestry Sciences Laboratory, Olympia, Washington. En gl ish Equivalents 1 liter 0.2642 gallon 1 kilogram = 2.2046 pound 1 gram = 0.0353 ounce 1 centimeter = 0.3937 inch 1 kilogram per hectare 1.1206 pounds per acre (9/50C) + 32 = of EFFECTS OF DIFFERENT SOURCES OF FERTILIZER NITROGEN ON GROWTH AND NUTRITION OF WESTERN HEMLOCK Reference Abstract Radwan, M. A. , and Dean S. DeBell. 1980. Effects of different sources of fertilizer nitrogen on growth and nutrition of western hemlock seedlings. USDA For. Servo Res. Pap. PNW-267, 15 p. Pacific Northwest Forest and Range Experiment Station, Portland, Oregon. Twelve different nitrogen (N) fertilizer treatments were tested on potted western hemlock (Tsuga heterophylla (Raf. ) Sarg.) seedlings. Fertilizers affected soil N and pH, and growth and foliar chemical com­ position of seedlings. Ura plus N-Serve and sulfur-coated urea appear more promising for promoting growth than other fertilizers tested. Results, however, do not explain reported variability in response of hemlock stands to N fertilization. Keywords: Nitrogen fertilizer response, seedling growth, western hemlock, Tsuga heterophylla. RESEARCH SUMMARY Research Paper PNW-267 1980 The following fertilization treatments were applied in the spring to potted, 4-year-old western hemlock (Tsuga heterophylla (Raf.
    [Show full text]
  • CAN-17 Calcium Ammonium Nitrate 17-0-0 GUARANTEED ANALYSIS TOTAL NITROGEN (N)
    Product Data Sheet CAN-17 Calcium Ammonium Nitrate 17-0-0 GUARANTEED ANALYSIS TOTAL NITROGEN (N) ...................................................................................................................................17.00% 5.40% Ammoniacal Nitrogen 11.60% Nitrate Nitrogen Calcium (Ca) ......................................................................................................................................................8.80% Derived from Ammonium Nitrate and Calcium Nitrate. KEEP OUT OF REACH OF CHILDREN 3. This product is a commercial fertilizer used as plant WARNING food in agricultural crop production. For specific CAUSES SKIN IRRITATION. application rates follow the recommendation of a CAUSES SERIOUS EYE IRRITATION. qualified individual or institution, such as, but not PRECAUTIONARY STATEMENTS: Wash thoroughly after limited to, a certified crop advisor, agronomist, handling. Specific treatment see First Aid section on this label. university crop extension publication, or apply PERSONAL PROTECTIVE EQUIPMENT: Wear protective according to recommendations in your approved gloves / protective clothing / eye protection / face protection. Take off nutrient management plan. contaminated clothing and wash before reuse. FIRST AID: IF ON SKIN Wash with plenty of water. If skin ir- ADVANTAGES ritation occurs, get medical advice / attention. IF IN EYES Rinse cautiously with water for several minutes. Remove contact lenses, if 1. Contains two forms of nitrogen– Nitrate nitrogen, fast present and easy to do. Continue rinsing.
    [Show full text]
  • Effect of Calcium Precursor on the Bioactivity and Biocompatibility of Sol-Gel-Derived Glasses
    Journal of Functional Biomaterials Article Effect of Calcium Precursor on the Bioactivity and Biocompatibility of Sol-Gel-Derived Glasses Alejandra Ruiz-Clavijo 1,2, Andrew P. Hurt 2, Arun K. Kotha 2 and Nichola J. Coleman 2,* 1 Facultad de Ciencias Químicas, Universidad Complutense de Madrid, Av. Complutense, 28040 Madrid, Spain; [email protected] 2 Faculty of Engineering and Science, University of Greenwich, Chatham Maritime, Kent ME4 4TB, UK; [email protected] (A.P.H.); [email protected] (A.K.K.) * Correspondence: [email protected]; Tel.: +44-208-331-9825 Received: 3 January 2019; Accepted: 20 February 2019; Published: 23 February 2019 Abstract: This study investigated the impact of different calcium reagents on the morphology, composition, bioactivity and biocompatibility of two-component (CaO-SiO2) glasses produced by the Stöber process with respect to their potential application in guided tissue regeneration (GTR) membranes for periodontal repair. The properties of the binary glasses were compared with those of pure silica Stöber particles. The direct addition of calcium chloride (CC), calcium nitrate (CN), calcium methoxide (CM) or calcium ethoxide (CE) at 5 mol % with respect to tetraethyl orthosilicate in the reagent mixture gave rise to textured, micron-sized aggregates rather than monodispersed ~500 nm spheres obtained from the pure silica Stöber synthesis. The broadening of the Si-O-Si band at ~1100 cm−1 in the infrared spectra of the calcium-doped glasses indicated that the silicate network was depolymerised by the incorporation of Ca2+ ions and energy dispersive X-ray analysis revealed that, in all cases, the Ca:Si ratios were significantly lower than the nominal value of 0.05.
    [Show full text]
  • Effect of a Nitrite/Nitrate-Based Accelerator on the Strength Development and Hydrate Formation in Cold-Weather Cementitious Materials
    materials Article Effect of a Nitrite/Nitrate-Based Accelerator on the Strength Development and Hydrate Formation in Cold-Weather Cementitious Materials Akira Yoneyama 1, Heesup Choi 1,* , Masumi Inoue 1, Jihoon Kim 2, Myungkwan Lim 3,* and Yuhji Sudoh 4 1 Department of Civil and Environmental Engineering, Kitami Institute of Technology, Hokkaido 090-8507, Japan; [email protected] (A.Y.); [email protected] (M.I.) 2 Faculty of Environmental Technology, Muroran Institute of Technology, Hokkaido 090-8585, Japan; [email protected] 3 Department of Architectural Engineering, Songwon University, Gwangju 61756, Korea 4 Basic Chemicals Department Chemicals Division, Nissan Chemical Corporation, Tokyo 103-6119, Japan; [email protected] * Correspondence: [email protected] (H.C.); [email protected] (M.L.) Abstract: Recently, there has been increased use of calcium-nitrite and calcium-nitrate as the main components of chloride- and alkali-free anti-freezing agents to promote concrete hydration in cold weather concreting. As the amount of nitrite/nitrate-based accelerators increases, the hydration of tricalcium aluminate (C3A phase) and tricalcium silicate (C3S phase) in cement is accelerated, thereby improving the early strength of cement and effectively preventing initial frost damage. Nitrite/nitrate-based accelerators are used in larger amounts than usual in low temperature areas ◦ below −10 C. However, the correlation between the hydration process and strength development in concrete containing considerable nitrite/nitrate-based accelerators remains to be clearly identified. Citation: Yoneyama, A.; Choi, H.; In this study, the hydrate composition (via X-ray diffraction and nuclear magnetic resonance), pore Inoue, M.; Kim, J.; Lim, M.; Sudoh, Y.
    [Show full text]
  • PB1616-Plant Nutrition and Fertilizers for Greenhouse Production
    University of Tennessee, Knoxville TRACE: Tennessee Research and Creative Exchange Commercial Horticulture UT Extension Publications 2-1999 PB1616-Plant Nutrition and Fertilizers for Greenhouse Production The University of Tennessee Agricultural Extension Service Follow this and additional works at: https://trace.tennessee.edu/utk_agexcomhort Part of the Horticulture Commons Recommended Citation "PB1616-Plant Nutrition and Fertilizers for Greenhouse Production," The University of Tennessee Agricultural Extension Service, PB1616-1M-2/99 E12-2015-00-104-99, https://trace.tennessee.edu/ utk_agexcomhort/4 The publications in this collection represent the historical publishing record of the UT Agricultural Experiment Station and do not necessarily reflect current scientific knowledge or ecommendations.r Current information about UT Ag Research can be found at the UT Ag Research website. This Greenhouse Production is brought to you for free and open access by the UT Extension Publications at TRACE: Tennessee Research and Creative Exchange. It has been accepted for inclusion in Commercial Horticulture by an authorized administrator of TRACE: Tennessee Research and Creative Exchange. For more information, please contact [email protected]. Agricultural Extension Service The University of Tennessee PB1616 PlantNutrition &Fertilizers For Greenhouse Production 1 Table of Contents Plant Nutrition: The Basics______________________________________________________________ 3 Fertilizer Salts ______________________________________________________________________
    [Show full text]
  • Precipitation Reactions 7.3 Precipitation Reactions
    312 Chapter 7 An Introduction to Chemical Reactions 7.3 Precipitation Reactions The reaction that forms the scale in hot water pipes, eventually leading to major plumbing bills, belongs to a category of reactions called precipitation reactions. So does the reaction of calcium and magnesium ions with soap to create a solid scum in your bathtub and washing machine. Cadmium hydroxide, which is used in rechargeable batteries, is made from the precipitation reaction between water solutions of cadmium acetate and sodium hydroxide. This section describes the changes that occur in precipitation reactions, shows you how to predict when they take place, and shows you how to describe them using chemical equations. Precipitation Reactions OBJECTIVE 9 Precipitation reactions, such as the ones we will see in this section, belong to a general class of reactions called double‑displacement reactions. (Double displacement reactions are also called double‑replacement, double‑exchange, or metathesis reactions.) Double displacement reactions have the following form, signifying that the elements in two reacting compounds change partners. AB + CD → AD + CB Precipitation reactions take place between ionic compounds in solution. For example, in the precipitation reactions that we will see, A and C represent the cationic (or positively charged) portions of the reactants and products, and B and D represent the anionic (or negatively charged) portions of the reactants and products. The cation of the first reactant (A) combines with the anion of the second reactant (D) to form the product AD, and the cation of the second reactant (C) combines with the anion of the first reactant to form the product CB.
    [Show full text]
  • Calcium Nitrate Pays Off on Citrus Reseach Indicates Increased Productivity and Profitability, Root Health, and Tree Longevity
    Industry At Work Calcium Nitrate Pays Off on Citrus Reseach indicates increased productivity and profitability, root health, and tree longevity. uring the past 72 years, studies year. Furthermore, 150 lbs/A of N from pacity from soilborne disease reduces have been conducted in Florida calcium nitrate is in compliance with tree productivity and profitability. The Dand California to define the best management practices suggested ammonium form of N (e.g. from ammo- value of calcium nitrate fertilizer for cit- by the University of Florida’s Institute nium nitrate, ammonium sulfate, or urea) rus growth and production. Its ben- of Food and Agricultural Sciences has been implicated in the proliferation efits are threefold: 1) increased tree pro- (IFAS). A 21-year N fertilizer source of fungal root disease organisms such ductivity and profitability, 2) a healthy study in California (1928 to 1949) pro- as Phytophthora sp. and Fusarium root system, and 3) greater tree longev- duced similar results. Trees fertilized solani. The nitrate form of N as sup- ity. We’ll review these benefits in with calcium nitrate produced 10 and 23 plied by calcium nitrate, sodium nitrate, greater detail. percent more fruit over the study dura- and potassium nitrate, appears to re- tion than those fertilized with urea and duce citrus root infection by these PRODUCTIVITY/PROFITABILITY ammonium sulfate. In a University of pathogens. Hydro Agri research trials (1993 to Florida study, calcium had a greater im- The fungus Fusarium solani also 1998), conducted in cooperation with pact on tree size and production than all damages citrus scaffold and fibrous the University of Florida, showed citrus other nutrients except potassium (N was roots.
    [Show full text]
  • Electronic Supplementary Information Magnesium-Regulated Oxygen Vacancies of Nickel Layered Double Hydroxides for Electrocatalytic Water Oxidation
    Electronic Supplementary Material (ESI) for Journal of Materials Chemistry A. This journal is © The Royal Society of Chemistry 2018 Electronic Supplementary Information Magnesium-Regulated Oxygen Vacancies of Nickel Layered Double Hydroxides for Electrocatalytic Water Oxidation Liyong Chen,* Yingyue Zhang, Dezhi Li, Yanxin Wang, and Chunying Duan* Materials and characterization methods All chemical reagents were used as received. Nafion solution (5 wt% in mixture of water and 2- propanol) was purchased from Sigma Aldrich. Nickel nitrate hexahydrate (Ni(NO3)2·6H2O), magnesium nitrate hexahydrate (Mg(NO3)2·6H2O), aluminum nitrate nonahydrate (Al(NO3)3·9H2O), manganese (II) nitrate tetrahydrate (Mn(NO3)2·4H2O), zinc nitrate hexahydrate (Zn(NO3)2·6H2O), calcium nitrate tetrahydrate (Ca(NO3)2·4H2O), 2-methylimidazole (Hmim), sodium hydroxide (NaOH), potassium permanganate (KMnO4), sodium nitrate (NaNO3), hydrogen peroxide (H2O2, 30 wt%), hydrazine hydrate (N2H4·H2O, >80 wt%), sulfuric acid (H2SO4, 18.4 M), hydrogen chloride (HCl, 12 M), methanol, RuO2, and natural graphite were purchased from Sinopharm Chemical Reagent Co., Ltd, China. Transmission electron microscopy (TEM) was used to characterize microstructures and morphologies of samples on a Tecnai F30 operated at 300 kV. Scanning electron microscopy (SEM) was performed on HITACHI UHR FE-SEM SU8220. X-ray diffraction (XRD) was carried out in a Rigaku D/Max 2400 automatic powder X-ray diffractometer with Cu-Kα radiation (λ = 1.5418 Å). The thickness of samples was estimated by atomic force microscopy (AFM, Park Systems XE-70) based on non-contact mode. The contents of metal elements were evaluated by inductively coupled plasma atomic emission spectroscopy (ICP-AES, Optima 2000DV).
    [Show full text]
  • Yaraliva® UCAN-17 CALCIUM AMMONIUM NITRATE SOLUTION 17-0-0
    YaraLiva® UCAN-17 CALCIUM AMMONIUM NITRATE SOLUTION 17-0-0 Guaranteed Analysis Guaranteed by Total Nitrogen (N) ..........................17.0% Yara North America, Inc. 3.2% Ammoniacal Nitrogen 100 N. Tampa Street, Suite 3200 8.4% Nitrate Nitrogen Tampa, FL 33602 5.4% Urea Nitrogen For Yara International ASA, Norway Calcium (Ca) ..................................7.2% Derived from Calcium Nitrate, Ammonium Nitrate, and Urea. Use in accordance with recommendations of a qualified individual or institution such Density: 11.8 pounds per gallon at 68° F. as, but not limited to, a certified crop advisor, agronomist, university crop DO NOT allow any pump handling the product to run dry or over-heat e.g. due to blockage or extension publication, or apply according closed valve in the associated lines, resulting in pumping against a dead-end. Under such condi- to recommendations in your approved tions if over-heating occurs this may cause vaporization and possible decomposition of the product. nutrient management plan. This can create pressure build-up in the pump and, if unchecked, lead to an explosion. Ensure that the pump is used correctly according to the manufacturer’s instructions at all times when pumping the product. Information regarding the contents and levels of metals in this product is available on the There are no implied warranties of merchantability or fitness with respect to these products, internet at http://www.aapfco.org/metals.html nor are there any expressed warranties other than as may be contained in any guaranteed analysis that may accompany the product. Buyer assumes all risk to person and property in the use, handling or storage of the product.
    [Show full text]
  • Antagonism Between Salts of the Heavy and Alkaline-Earth Metals in Their Toxic Action on the Tadpole of the Toad, Bufo Bufo Bufo (L.) by J
    ANTAGONISM BETWEEN SALTS OF THE HEAVY AND ALKALINE-EARTH METALS IN THEIR TOXIC ACTION ON THE TADPOLE OF THE TOAD, BUFO BUFO BUFO (L.) BY J. R. ERICHSEN JONES, B.Sc, PH.D. Department of Zoology, University College of Wales, Aberystwyth (Received 18 February 1939) (With Fifteen Text-figures) A. INTRODUCTION THE literature on antagonism is very extensive, dating back to the classic work of Ringer (1884) on the antagonistic effect of calcium and potassium upon the working of the vertebrate heart. The writer (1939) has compiled a. very brief review of the literature on antagonism, and discussions of various aspects of the subject are to be found in the works of Loeb (1906), Osterhout (1922), Stiles (1924), Heilbrunn (1928, 1937) and Seifriz (1936). The subject has not only attracted the biologist but has also claimed the attention of the physical chemists who have studied salt antagonism in inanimate systems; thus Clowes (1916) studied the effect of calcium and sodium salts on the stability of watery emulsions of soaps and oils, while Fenn (1916) employed gelatine and Moyer & Bull (1935) employed cellulose surfaces. In their selection of living material the biologists have largely confined themselves to bacteria, plant material, low forms of animal life and the eggs of marine animals. Thus the extensive study of the subject made by Osterhout (1922) was performed with the roots of wheat seedlings and the marine alga Lamnaria, the experiments of Rezni- koff & Chambers (1925), Heilbrunn & Daugherty (1932) and Thornton (1935) were performed with Amoeba, those of Heilbrunn (1928) with Stentor and Arbacia eggs, those of Loeb (1906) with the eggs of Funduhis and those of Brooks (1919, 1920, 1921) with Bacillus subtilis.
    [Show full text]
  • Resulting Nitric Acid Is Stronger Than the Calcium Hydroxide Affect the Ph of a Solution. When Applied to Soil, Urea Is
    combustion of fuel by in-house heaters may result in the production of ethylene (Shalit, 1980). Ethylene is a plant hormone responsible for senescence causing the buds to age prematurely. In order to promote uniform and longer flowering, remove the first two flower buds at the base. Defoliation is also recommended for an increased flower count (Irons, 1982). When the plants have 8-10 leaves, begin removing new leaves as they form. Do this every few days to keep up with new growth until a satisfactory bud set is obtained. The resultant plants should produce 50 or more flowers. Although not commercially feasible, Gloxinias may be grown a second season. After they have flowered, allow a "rest" period which follows the natural cycle of the tuber. This crop originated in Brazil where there is a rainy season for growth and a dry season for rest (Katzenberger, 1975). The dormant tubers should be watered about once a month until a new shoot appears, then repotted. THE pH OF CALCIUM NITRATE AND UREA Although the Gloxinia is easily saleable once seen by AS FERTILIZERS customer, its production is limited due to shipping difficulties related to the large, often brittle foliage. Jay S. Koths Extension Floriculturist This problem may be averted by growing smaller-leaved cultivars with more flexible leaves or growing smaller plants in small pots. This allows more plants per square Calcium nitrate is acid and urea is neutral in foot and faster turnover of valuable greenhouse space. solution. This is true when first applied as fertilizer to root media. It is NOT TRUE in ultimate effect.
    [Show full text]