Abstract
Oval-shaped graphene/ZnO quantum hybrid (GZQH) is synthesized via chemical-hydrothermal method and tested for the photoenhanced selective reduction of nitroarenes. A facile molecular fusion process is employed to produce graphene quantum dots (GQDs) from pyrene, which is followed by hydrothermal treatment with embryonic ZnO quantum dots (5nm in size) to yield the GZQHs. Zn2+ ions on ZnO embryo react with a functional group of graphene, which forms Zn-O-C bonding leading to highly crystalline quantum hybrids with uniform interface. The GZQHs have a quenched photoluminescence intensity as compared to the GQDs (2nm in size) due to electron transfer at the graphene-ZnO interface. Hydrogen molecules dissociate into hydrogen atoms by photogenerated electrons which transfer and perturb at the interface under UV irradiation. The GZQHs exhibit an excellent UV-induced catalytic performance for the selective reduction of nitroarenes. The effect of ZnO:graphene ratio on reduction reaction rate constant is also investigated.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
