sustainability Review Outstanding Graphene Quantum Dots from Carbon Source for Biomedical and Corrosion Inhibition Applications: A Review Badreah Ali Al Jahdaly 1, Mohamed Farouk Elsadek 2,3,* , Badreldin Mohamed Ahmed 2, Mohamed Fawzy Farahat 2, Mohamed M. Taher 4 and Ahmed M. Khalil 5 1 Chemistry Department, Faculty of Applied Science, Umm Al-Qura University, Makkah P.O. Box 715, Saudi Arabia;
[email protected] 2 Department of Community Health Sciences, College of Applied Medical Sciences, King Saud University, Riyadh 11433, Saudi Arabia;
[email protected] (B.M.A.);
[email protected] (M.F.F.) 3 Nutrition and Food Science Department, Faculty of Home Economics, Helwan University, Cairo 11511, Egypt 4 Department of Chemistry, Faculty of Science, Cairo University, Giza 12613, Egypt;
[email protected] 5 Photochemistry Department, National Research Centre, Giza 12622, Egypt;
[email protected] * Correspondence:
[email protected] Abstract: Graphene quantum dots (GQD) is an efficient nanomaterial composed of one or more layers of graphene with unique properties that combine both graphene and carbon dots (CDs). It can be synthesized using carbon-rich materials as precursors, such as graphite, macromolecules polysaccharides, and fullerene. This contribution emphasizes the utilization of GQD-based materials in the fields of sensing, bioimaging, energy storage, and corrosion inhibitors. Inspired by these numerous applications, various synthetic approaches have been developed to design and fabricate GQD, particularly bottom-up and top-down processes. In this context, the prime goal of this review is to emphasize possible eco-friendly and sustainable methodologies that have been successfully employed in the fabrication of GQDs.