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4-Phenoxyphenol-Functionalized Reduced Graphene Oxide Nanosheets: A Metal-Free Fenton-Like Catalyst for Pollutant Destruction.
- Source :
-
Environmental Science & Technology . 1/16/2018, Vol. 52 Issue 2, p747-756. 10p. - Publication Year :
- 2018
-
Abstract
- Metal-containing Fenton catalysts have been widely investigated. Here, we report for the first time a highly effective stable metal-free Fenton-like catalyst with dual reaction centers consisting of 4-phenoxyphenol-functionalized reduced graphene oxide nanosheets (POP-rGO NSs) prepared through surface complexation and copolymerization. Experimental and theoretical studies verified that dual reaction centers are formed on the C-O-C bridge of POP-rGO NSs. The electron-rich center around O is responsible for the efficient reduction of H2O2 to •OH, while the electron-poor center around C captures electrons from the adsorbed pollutants and diverts them to the electron-rich area via the C-O-C bridge. By these processes, pollutants are degraded and mineralized quickly in a wide pH range, and a higher H2O2 utilization efficiency is achieved. Our findings address the problems of the classical Fenton reaction and are useful for the development of efficient Fenton-like catalysts using organic polymers for different fields. [ABSTRACT FROM AUTHOR]
- Subjects :
- *PHENOL
*GRAPHENE
*POLLUTANTS
*METAL toxicology
*CHEMICAL reduction
Subjects
Details
- Language :
- English
- ISSN :
- 0013936X
- Volume :
- 52
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Environmental Science & Technology
- Publication Type :
- Academic Journal
- Accession number :
- 129164045
- Full Text :
- https://doi.org/10.1021/acs.est.7b04865