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Facile Large Scale Solution Synthesis of Nanostructured Iron, Nickel and Cobalt Telluride and Possible Applications Sungbum Hong Iowa State University
Iowa State University Capstones, Theses and Graduate Theses and Dissertations Dissertations 2017 Facile large scale solution synthesis of nanostructured iron, nickel and cobalt telluride and possible applications Sungbum Hong Iowa State University Follow this and additional works at: https://lib.dr.iastate.edu/etd Part of the Chemical Engineering Commons, Materials Science and Engineering Commons, Mechanics of Materials Commons, and the Nanoscience and Nanotechnology Commons Recommended Citation Hong, Sungbum, "Facile large scale solution synthesis of nanostructured iron, nickel and cobalt telluride and possible applications" (2017). Graduate Theses and Dissertations. 15321. https://lib.dr.iastate.edu/etd/15321 This Thesis is brought to you for free and open access by the Iowa State University Capstones, Theses and Dissertations at Iowa State University Digital Repository. It has been accepted for inclusion in Graduate Theses and Dissertations by an authorized administrator of Iowa State University Digital Repository. For more information, please contact [email protected]. Facile large scale solution synthesis of nanostructured iron, nickel and cobalt telluride and possible applications by Sungbum Hong A thesis submitted to the graduate faculty in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE Major: Chemical Engineering Program of Study Committee: Yue Wu, Major Professor Zengyi Shao Xinwei Wang The student author and the program of study committee are solely responsible for the content of this thesis. The Graduate College will ensure this thesis is globally accessible and will not permit alterations after a degree is conferred. Iowa State University Ames, Iowa 2017 Copyright © Sungbum Hong, 2017. All rights reserved. ii DEDICATION In memory of my Father Hong, Neung-pyo and Mother Kwon, Kyung-hee iii TABLE OF CONTENTS Page LIST OF FIGURES .................................................................................................. -
Maximizing Thermoelectric Figures of Merit by Uniaxially Straining Indium Selenide † † † ‡ † Leonard W
Article Cite This: J. Phys. Chem. C 2019, 123, 25437−25447 pubs.acs.org/JPCC Maximizing Thermoelectric Figures of Merit by Uniaxially Straining Indium Selenide † † † ‡ † Leonard W. Sprague Jr., Cancan Huang, Jeong-Pil Song,*, , and Brenda M. Rubenstein † Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States ‡ Department of Physics, University of Arizona, Tucson, Arizona 85721, United States *S Supporting Information ABSTRACT: A majority of the electricity currently generated is regrettably lost as heat. Engineering high-efficiency thermo- electric materials which can convert waste heat back into electricity is therefore vital for reducing our energy fingerprint. ZT, a dimensionless figure of merit, acts as a beacon of promising thermoelectric materials. However, engineering materials with large ZT values is practically challenging, since maximizing ZT requires optimizing many interdepend- ent material properties. Motivated by recent studies on bulk indium selenide that suggest it may have favorable thermo- electric properties, here we present the thermoelectric properties of monolayer indium selenide in the presence of uniaxial strain using first-principles calculations conjoined with semiclassical Boltzmann transport theory. Our calculations indicate that conduction band convergence occurs at a compressive strain of −6% along the zigzag direction and results in an enhancement of ZT for p-type indium selenide at room temperature. Further enhancements occur at −7% as the valence bands similarly converge, reaching a maximum ZT value of 0.46, which is one of the largest monolayer InSe figures of merit recorded to date at room temperature. The importance of strain is directly reflected by the enhanced transport coefficients observed at strains nearing those which give rise to the band degeneracies we observe. -
Mossbauer Spectroscopy of the Ag-Au Chalcogenides Petzite, Fischesserite
Canadian Mineralogist Vol. 30, pp.327-333(1992) MoSSBAUERsPEcrRoscoPY oF THEAs-Au GHALGoGENIDES PETZITE,FISCHESSERITE AND UYTENBOGAARDTITE FRIEDRICH E. WAGNER Physik-DepartmentEIS, TechnischeUniversittit Milnchen, D-8046 Garching, Germany JERZY A. SAWICKI AECL Research,Cholk RiverLaboratories, Chalk River, Ontario KOJ IJO JOSEPHFRIEDL Physik-DepartmentEt|, TechnischeUniversitdt Milnchen, D-8M6 Garching,Germany JOSEPHA. MANDARINO Departmentof Mineralogy'Royal OntarioMuseum, Toronto, OntarioM5S 2C6 DONALD C. HARRIS ologicalSurvey of Canada,601 Booth Street,Ottawa, Ontario KIA OE8 ABSTRACT 1974u M<lssbauerspectra of the77.3 keV l rays o1 weremeasured aL4.2K for natural and synthetic-Ag3AuTe2 (petzite),synrh;ic Ag3AuSe2(fischesserite) and syntheticAg3AuS2 (uytenbogaardtite). All compoundsstudied exhibit iarge giadients in eleitric fi6ld at the gold nuclei, notably the laigest so far found in any gold mineral' The_isomer shiits ind electricquadrupole interactions, and in particular the similarity of theseparameters for Ag3AuS2with those of Au2S, suggestthat the gold in the Ag3AuX2 compoundsshould be consideredas monovalent. Keywords:refractory Au minerals, invisible Au, structurally bound Au, Ag-Au chalcogenides,petzite, fischesserite, uy-tenbogaardtite,l97Au Mcissbauerspectroscopy, isomer shift, electric quadrupole interaction, Hollinger mine, Timmins, Hemlo deposit, Ontario. SOMMAIRE leTAu Nous avons 6tudi6les spectresde Mrissbauerdes rayons ,y (77.3 keV) de I'isotope g6n€r€sd 4,2 K et mesur6s sur des 6chantillonsnaturels er synthetiquesde Ag3AuTe2Oetzite), et des 6chantillonssynthdtiques de AgsAuSe2 (fischesserite)et Ag3AuS2(uytenbogaardiite). Touiies compos6sfont preuve d'un gradient intensedans le champ ilectrique auiour diinuclEus des atomesd'or, et en fait le plus intensequi ait 6t6 d6couvertdans une espdceaurifbre. D'aprbs les d€placementsisombres et les interactions6lectriques quadrupolaires, et en particulier la similarit6 de ces parambtresdans le Ag3AuS2avec ceux de Au2S, I'or dans ces composdsAgAuX2 serait monovalent. -
Revised Version the Crystal Structure of Uytenbogaardtite, Ag3aus2, And
Title The crystal structure of uytenbogaardtite, Ag3AuS2, and its relationships with gold and silver sulfides-selenides Authors Bindi, L; Stanley, Christopher; Seryotkin, YV; Bakakin, VR; Pal'yanova, GA; Kokh, KA Date Submitted 2017-03-30 1 1 1237R – revised version 2 The crystal structure of uytenbogaardtite, Ag3AuS2, and its relationships 3 with gold and silver sulfides-selenides 4 1, 2 3,4 5 5 LUCA BINDI *, CHRISTOPHER J. STANLEY , YURII V. SERYOTKIN , VLADIMIR V. BAKAKIN , 3,4 3,4 6 GALINA A. PAL’YANOVA , KONSTANTIN A. KOKH 7 8 1Dipartimento di Scienze della Terra, Università di Firenze, Via G. La Pira 4, I-50121Firenze, Italy 9 2Natural History Museum, Cromwell Road, London SW7 5BD, United Kingdom 3 10 Sobolev Institute of Geology and Mineralogy of the Siberian Branch of the Russian Academy of Sciences, pr. 11 Akademika Koptyuga, 3, Novosibirsk 630090, Russia 4 12 Novosibirsk State University, Pirogova str., 2, Novosibirsk 630090, Russia 5 13 Institute of Inorganic Chemistry, Siberian Branch of the RAS, prosp. Lavrentieva 3, 630090 Novosibirsk, Russia 14 15 * e-mail address: [email protected] 16 17 Abstract 18 The crystal structure of the mineral uytenbogaardtite, a rare silver-gold sulfide, was solved 19 using intensity data collected on a crystal from the type locality, the Comstock lode, Storey 20 County, Nevada (U.S.A.). The study revealed that the structure is trigonal, space group R 3 c, 3 21 with cell parameters: a = 13.6952(5), c = 17.0912(8) Å, and V = 2776.1(2) Å . The refinement 22 of an anisotropic model led to an R index of 0.0140 for 1099 independent reflections. -
Structures of Bulk Hexagonal Post-Transition-Metal Chalcogenides from Dispersion-Corrected Density-Functional Theory
Structures of bulk hexagonal post-transition-metal chalcogenides from dispersion-corrected density-functional theory S. J. Magorrian National Graphene Institute, University of Manchester, Booth Street East, Manchester M13 9PL, United Kingdom V. Z´olyomi Hartree Centre, STFC Daresbury Laboratory, Daresbury WA4 4AD, United Kingdom N. D. Drummond Department of Physics, Lancaster University, Lancaster LA1 4YB, United Kingdom (Dated: March 31, 2021) We use dispersion-corrected density-functional theory to determine the relative energies of com- peting polytypes of bulk layered hexagonal post-transition-metal chalcogenides, to search for the most stable structures of these potentially technologically important semiconductors. We show that there is some degree of consensus among dispersion-corrected exchange-correlation functionals re- garding the energetic orderings of polytypes, but we find that for each material there are multiple stacking orders with relative energies of less than 1 meV per monolayer unit cell, implying that stacking faults are expected to be abundant in all post-transition-metal chalcogenides. By fitting a simple model to all our energy data, we predict that the most stable hexagonal structure has P63/mmc space group in each case, but that the stacking order differs between GaS, GaSe, GaTe, and InS on the one hand and InSe and InTe on the other. At zero pressure, the relative energies obtained with different functionals disagree by around 1{5 meV per monolayer unit cell, which is not sufficient to identify the most stable structure unambiguously; however, multi-GPa pressures reduce the number of competing phases significantly. At higher pressures, an AB0-stacked structure of the most stable monolayer polytype is found to be the most stable bulk structure; this structure has not been reported in experiments thus far. -
Colloidal and Deposited Products of the Interaction of Tetrachloroauric Acid with Hydrogen Selenide and Hydrogen Sulfide in Aqueous Solutions
minerals Article Colloidal and Deposited Products of the Interaction of Tetrachloroauric Acid with Hydrogen Selenide and Hydrogen Sulfide in Aqueous Solutions Sergey Vorobyev 1, Maxim Likhatski 1, Alexander Romanchenko 1, Nikolai Maksimov 1, Sergey Zharkov 2,3, Alexander Krylov 2 and Yuri Mikhlin 1,* 1 Institute of Chemistry and Chemical Technology of the Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk 660036, Russia; [email protected] (S.V.); [email protected] (M.L.); [email protected] (A.R.); [email protected] (N.M.) 2 Kirensky Institute of Physics of the Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk 660036, Russia; [email protected] (S.Z.); [email protected] (A.K.) 3 Electron Microscopy Laboratory, Siberian Federal University, Krasnoyarsk 660041, Russia * Correspondence: [email protected]; Tel.: +7-391-205-1928 Received: 11 October 2018; Accepted: 29 October 2018; Published: 31 October 2018 Abstract: The reactions of aqueous gold complexes with H2Se and H2S are important for transportation and deposition of gold in nature and for synthesis of AuSe-based nanomaterials but are scantily understood. Here, we explored species formed at different proportions of HAuCl4, H2Se and H2S at room temperature using in situ UV-vis spectroscopy, dynamic light scattering (DLS), zeta-potential measurement and ex situ Transmission electron microscopy (TEM), electron diffraction, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and Raman spectroscopy. Metal gold colloids arose at the molar ratios H2Se(H2S)/HAuCl4 less than 2. At higher ratios, pre-nucleation “dense liquid” species having the hydrodynamic diameter of 20–40 nm, zeta potential −40 mV to −50 mV, and the indirect band gap less than 1 eV derived from the UV-vis spectra grow into submicrometer droplets over several hours, followed by fractional nucleation in the interior and + coagulation of disordered gold chalcogenide. -
(Silver)-Telluride-(Selenide) Mineral Deposits
Geological and Atmospheric Sciences Publications Geological and Atmospheric Sciences 12-2009 Understanding gold-(silver)-telluride-(selenide) mineral deposits Nigel J. Cook University of Adelaide Cristiana L. Ciobanu University of Adelaide Paul G. Spry Iowa State University, [email protected] Panagiotis Voudouris University of Athens participants of IGCP-486 Follow this and additional works at: https://lib.dr.iastate.edu/ge_at_pubs Part of the Geochemistry Commons, Geology Commons, and the Mineral Physics Commons The complete bibliographic information for this item can be found at https://lib.dr.iastate.edu/ ge_at_pubs/354. For information on how to cite this item, please visit http://lib.dr.iastate.edu/ howtocite.html. This Article is brought to you for free and open access by the Geological and Atmospheric Sciences at Iowa State University Digital Repository. It has been accepted for inclusion in Geological and Atmospheric Sciences Publications by an authorized administrator of Iowa State University Digital Repository. For more information, please contact [email protected]. Understanding gold-(silver)-telluride-(selenide) mineral deposits Abstract Gold-(silver)-telluride (selenide) ores occur as epithermal orogenic and intrusion related deposits. Although Te and Se are chalcophile elements and share geochemical affinity withu, A formation of selenides and other elements Ag-Au require acidic or reducing environments. The thermodynamic stability conditions for Au and Agtellurides and native tellurium indicate an epithermal environment. Analysis of mineral paragenensis, textures and compositional variation in tellurides/selenides suggest petrogenetic processes involving interaction with fluids leading ot Au scavenging and entrapment in tellurides, changes in chemistry/rates of fluid infiltration and attaining equilibrium in a given assemblage. -
Synthesis, Crystal Lattices and Some Electrical Properties of Indium Tellurides and Selenides
MINERALOGICAL JOURNAL, VOL. 2, No. 2, pp. 63-77, JUNE, 1957 SYNTHESIS, CRYSTAL LATTICES AND SOME ELECTRICAL PROPERTIES OF INDIUM TELLURIDES AND SELENIDES SUEZO SUGAIKE Matsuda Research Laboratory, Tokyo Shibaura Electric Company ABSTRACT The crystals of indium tellurides and selenides, InTe, In2Te3, InTe3, InSe and In2Se3, have been synthesized by the double-furnace technique and their crystal lattices have been characterized by X-ray single crystal examinations. From the results of their electrical conductivity measurements it has been found that all of them are semiconductors, In2Te3 and InSe being poorly con ductive with some ionic character, InTe, InTe3 and In2Se3 having rather higher conductivities of order of 1-1•~102 (ƒ¶ cm)-1 at room temperature, and that In2Se3 shows a peculiar phase transition at 200•Ž. The lattice symmetries of these compounds have been compared with those of other III b metal chal cogenides. Introduction The chalcogenides of the III b metals in the periodic table have first been studied by W. Klemm and H.U. von Vogel8) in 1934. Although the majority of the compounds have been investigated crystallogra phically by H. Hahn2) 5) and by S. Schubert16), the data on InTe3 and InSe are missing yet. From the crystal-chemical view-point it will be interesting to see the similarity as well as difference of the properties of In2Se3 and In2Te3. The electronegativity differences ƒ¢x of indium decrease gradually from 1.2 against sulphur, to 1.1 against selenium and 0.8 against tellurium. These small values of ƒ¢x suggest, according to Pauling's theory14), their indium compounds to be valence crystals or semiconductors, with the smallness of ƒ¢x indicating the maximum amount (to the extent of 20%) of ionic character of the bonds. -
Liquid Mediated Solid-State Metathesis Reactions
Liquid-Mediated Solid-State Metathesis Reactions Daniel Morrison A thesis submitted to the University o f London in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Chemistry. University College, University of London London, United Kingdom September, 2001 ProQuest Number: U642239 All rights reserved INFORMATION TO ALL USERS The quality of this reproduction is dependent upon the quality of the copy submitted. In the unlikely event that the author did not send a complete manuscript and there are missing pages, these will be noted. Also, if material had to be removed, a note will indicate the deletion. uest. ProQuest U642239 Published by ProQuest LLC(2015). Copyright of the Dissertation is held by the Author. All rights reserved. This work is protected against unauthorized copying under Title 17, United States Code. Microform Edition © ProQuest LLC. ProQuest LLC 789 East Eisenhower Parkway P.O. Box 1346 Ann Arbor, Ml 48106-1346 L Abstract: A variety of metathetical reactions have been carried out in a liquid medium to explore the variety and depth of such reactions, A comparison with the similar solid-state reactions gives a clear indication of the differences and similarities between the two alternate routes. The fact that these reactions go to completion at all is interesting in that the conditions employed are very mild and do not employ any "forcing" means to induce reaction. Main group and transition metal sulphide, selenide and telluride and transition metal phosphide, arsenide and antimonide binary and ternary compounds were synthesised and characterised. An in-depth investigation into the synthesis and characterisation of the chalcopyrite CuInEj (E = S, Se, Te) family of ternary compounds has also been carried out with a specific focus on liquid variation, reaction duration and temperature and annealing treatment. -
(12) Patent Application Publication (10) Pub. No.: US 2013/0264526 A1 Cao Et Al
US 20130264526A1 (19) United States (12) Patent Application Publication (10) Pub. No.: US 2013/0264526 A1 Cao et al. (43) Pub. Date: Oct. 10, 2013 (54) MOLECULAR PRECURSORS AND Related U.S. Application Data PROCESSES FOR PREPARING COPPER (60) Provisional application No. 61/419,355, filed on Dec. SN(SSSIFIDEASELENIDE 3, 2010, provisional application No. 61/419,351, filed on Dec. 3, 2010. (75) Inventors: Yanyan Cao, Wilmington, DE (US); John W. Catron, JR., Smyrna, DE (US); Lynda Kaye Johnson, Wilmington, DE PublicationDCOSSO Classificati (US); Meijun Lu, Hockessin, DE (US); (51) Int. Cl. Irina Malaj ovich, Swarthmore, PA HOIL 3L/0272 (2006.01) (US); Daniela Rodica Radu, Hockessin, (52) U.S. Cl DE (US) CPCAV e. we.................................. HOIL 31/0272 (2013.01) (73) Assignee: E I DUPONT DE NEMOURS AND USPC ....................................................... 252/.519.4 COMPANY, Wilmington, DE (US) 57 ABSTRACT (21) Appl. No.: 13/885,105 (57) This invention relates to molecular precursors and processes (22) PCT Filed: Dec. 1, 2011 for preparing coated Substrates and films of copper indium gallium sulfide/selenides (CIGS/Se). Such films are useful in (86). PCT No.: PCT/US2O11AO62847 the preparation of photovoltaic devices. This invention also S371 (c)(1), relates to processes for preparing coated Substrates and for (2), (4) Date: May 13, 2013 making photovoltaic devices. US 2013/0264526 A1 Oct. 10, 2013 MOLECULAR PRECURSORS AND salt-based precursors into photovoltaic devices has led to PROCESSES FOR PREPARING COPPER relatively low efficiencies, possibly due to chlorine- and oxy INDIUM GALLUMSULFIDEASELENIDE gen-based impurities. COATINGS AND FILMS 0007 CuInSea films have been formed from a solution of Cuand Innaphthenates, wherein the naphthenates are derived CROSS-REFERENCE TO RELATED from an acidic fraction of processed petroleum and are com APPLICATION posed of a mixture of organic acids. -
12.2% 130,000 155M Top 1% 154 5,300
We are IntechOpen, the world’s leading publisher of Open Access books Built by scientists, for scientists 5,300 130,000 155M Open access books available International authors and editors Downloads Our authors are among the 154 TOP 1% 12.2% Countries delivered to most cited scientists Contributors from top 500 universities Selection of our books indexed in the Book Citation Index in Web of Science™ Core Collection (BKCI) Interested in publishing with us? Contact [email protected] Numbers displayed above are based on latest data collected. For more information visit www.intechopen.com Chapter Indium Chalcogenide Nanomaterials in the Forefront of Recent Technological Advancements Siphamandla C. Masikane and Neerish Revaprasadu Abstract In the last decade, there has been an increasing trend in the exploitation of indium chalcogenides in various applications which range from water splitting reactions in renewable energy to degradation of dyes in environmental rehabilita- tion. This trend is attributed to the interesting and unique properties of indium chalcogenide nanomaterials which can be easily tuned through a common approach: particle size, shape and morphology engineering. In this chapter, we outline the preferred attributes of indium chalcogenide nanomaterials which are deemed suitable for recent applications. Furthermore, we explore recent reaction protocols which have been reported to yield good quality indium chalcogenide nanomaterials of multinary configurations, e.g. binary and ternary compounds, among others. Keywords: sulfide, selenide, telluride, multinary, applications 1. Introduction Over the years, there has been an increasing demand on state-of-art solutions to solve real world problems such as the energy crises and efficient early-detection protocols in biomedical services. -
Hydrothermal Studies on Mineral Replacement Reaction in the Gold-Silver-Tellurium and Copper-Iron-Sulphur Systems
HYDROTHERMAL STUDIES ON MINERAL REPLACEMENT REACTIONS IN THE GOLD-SILVER- TELLURIUM AND COPPER-IRON-SULFR SYSTEMS JING ZHAO !" !#$% &'"( "%" !) " *+$# , ) " )#" TABLE OF CONTENTS ABSTRACT .............................................................................................................................. v DECLARATION .................................................................................................................. vii ACKNOWLEDGEMENTS .................................................................................................. ix CHAPTER 1INTRODUCTION .......................................................................................... 1 1.1 Mineral replacement reaction and coupled dissolution reprecipitation mechanism ......... 4 1.1.1 Pseudomorphism .................................................................................................................. 8 1.1.2 Porosity and fine cracks .................................................................................................... 10 1.2 Mineral replacement reactions among gold-(silver)-tellurides ....................................... 13 1.3 Mineral replacement reactions among copper iron sulfides ........................................... 17 1.4 Research objects .............................................................................................................. 23 1.5 References ....................................................................................................................... 24 CHAPTER