Reduced Graphene Oxide for Catalytic Oxidation of Aqueous Organic Pollutants
MetadataShow full item record
We discovered that chemically reduced graphene oxide, with an ID/IG >1.4 (defective to graphite) can effectively activate peroxymonosulfate (PMS) to produce active sulfate radicals. The produced sulfate radicals (SO4•—) are powerful oxidizing species with a high oxidative potential (2.5–3.1 vs 2.7 V of hydroxyl radicals), and can effectively decompose various aqueous contaminants. Graphene demonstrated a higher activity than several carbon allotropes, such as activated carbon (AC), graphite powder (GP), graphene oxide (GO), and multiwall carbon nanotube (MWCNT). Kinetic study of graphene catalyzed activation of PMS was carried out. It was shown that graphene catalysis is superior to that on transition metal oxide (Co3O4) in degradation of phenol, 2,4-dichlorophenol (DCP) and a dye (methylene blue, MB) in water, therefore providing a novel strategy for environmental remediation.
Showing items related by title, author, creator and subject.
An insight into metal organic framework derived N-doped graphene for the oxidative degradation of persistent contaminants: formation mechanism and generation of singlet oxygen from peroxymonosulfateLiang, P.; Zhang, C.; Duan, Xiaoguang; Sun, Hongqi; Liu, Shaomin; Tade, Moses; Wang, Shaobin (2017)The synthesis of carbonaceous materials from a metal organic framework (MIL-100), organic linker and N-precursor was comprehensively investigated, and the structures of the products were characterized. It was found that ...
Occurrence of radical and nonradical pathways from carbocatalysts for aqueous and nonaqueous catalytic oxidationDuan, X.; Ao, Z.; Zhou, L.; Sun, Hongqi; Wang, G.; Wang, S. (2016)© 2016 Elsevier B.V. Metal-free activation of superoxides provides an efficient and environmentally benign strategy for heterogeneous catalytic oxidation. In this study, nanocarbons with varying carbon-conjugation structures ...
Duan, Xiaoguang; Sun, Hongqi; Wang, Shaobin (2018)Conspectus Catalytic processes have remarkably boosted the rapid industrializations in chemical production, energy conversion, and environmental remediation. As one of the emerging applications of carbocatalysis, metal-free ...