Kinetic Study on Mutagenic Chemical Degradation through Three Pot Synthesiszed Graphene@ZnO Nanocomposite

• Published in: PloS one Vol. 10; no. 8; p. e0135055
• Main Authors: Shoeb, Mohd, Singh, Braj Raj, Mobin, Mohammad, Afreen, Gul, Khan, Wasi, Naqvi, Alim H
• Format: Journal Article
• Language: English
• Published: United States Public Library of Science 19-08-2015; Public Library of Science (PLoS)
• Subjects: Applied physics; Azo compounds; Azo Compounds - metabolism; Biodegradation; Carbon; Carcinogens; Carcinogens, Environmental - metabolism; Chemical degradation; Comparative analysis; Differential thermal analysis; Dyes; Electric properties; Electron transfer; Environmental Pollutants - metabolism; Environmental Restoration and Remediation - methods; Graphene; Graphite; Graphite - chemistry; Irradiation; Light irradiation; Materials science; Metal Nanoparticles - chemistry; Metal oxides; Nanocomposites; Nanocomposites - chemistry; Nanomaterials; Nanostructured materials; Optical properties; Oxidation; Oxygen; Photodegradation; Photolysis; Photovoltaic cells; Physical chemistry; Reactive oxygen species; Reactive Oxygen Species - metabolism; Sheets; Surface area; Synthesis; Thermal stability; U.V. radiation; Ultraviolet radiation; Ultraviolet Rays; Zinc; Zinc oxide; Zinc Oxide - chemistry; Zinc oxides; United States > US; India
• ISSN: 1932-6203; 1932-6203
• DOI: 10.1371/journal.pone.0135055

The study was taken up with the objective to synthesize graphene-zinc oxide nano particles (NPs) nanocomposite (Gr@ZnO-Nc) via In-situ synthesis method. The structural, optical, thermal, electrical and photocatalytic properties of the synthesized Gr@ZnO-Nc were studied. The characterization data confirmed that the ZnO NPs were successfully incorporated into the graphene sheets. Further, TGA/DTA results exhibited an enhanced thermal stability of the Gr@ZnO-Nc compared with the graphene. The Gr@ZnO-Nc, graphene sheets were uniformly wrapped by ZnO NPs, which can protect graphene and delay their oxidation in air. The synthesized Gr@ZnO-Nc was used for the efficient photodegradation of a carcinogenic methyl orange (MO) dye. The results exhibited promising photodegradation of the MO dye under UV light irradiation through the production of reactive oxygen species (ROS). The promising effect of Gr@ZnO-Nc on the photodegradation properties was conferred by the large surface area which increased adsorption capacity, and the strong electron transfer ability. Thus, it is encouraging to conclude that the synthesized Gr@ZnO-Nc has environmental significance with its utility in remediation in the hazardous MO dye.