文献类型：期刊文献

英文题名：Weak-Bond-Based Photoreduction of Polybrominated Diphenyl Ethers on Graphene in Water

作者：Sheng, Guodong[1];Shao, Yingying[1];Ye, Weidong[1];Sun, Chunyan[1];Chen, Chuncheng[2];Crittenden, John C.[3];Liu, Chunlin[1]

机构：[1]Shaoxing Univ, Dept Chem, 508 Huancheng West Rd, Shaoxing 312000, Zhejiang, Peoples R China;[2]Chinese Acad Sci, Beijing Natl Lab Mol Sci, Inst Chem, Key Lab Photochem, 2 Zhongguancun North First St, Beijing 100190, Peoples R China;[3]Georgia Inst Technol, Brook Byers Inst Sustainable Syst, 828 W Peachtree St,Suite 320, Atlanta, GA 30332 USA

年份：2018

卷号：6

期号：5

起止页码：6711

外文期刊名：ACS SUSTAINABLE CHEMISTRY & ENGINEERING

收录：SCI-EXPANDED(收录号：WOS:000431927500112)、、EI(收录号：20182005198653)、Scopus(收录号：2-s2.0-85046712282)、WOS

基金：We thank the financial support by the National Natural Science Foundation of China (Nos. 21107073 and 21477080).

语种：英文

外文关键词：carbon nanomaterials; graphene; photoreduction; polybrominated diphenyl ethers; weak-bond interaction

外文摘要：The photoreduction of polybrominated diphenyl ethers (PBDEs)-a kind of persistent organic pollutants with high hydrophobicity-was achieved on graphene in aqueous solution. We first observed that reduced graphene oxide (RGO) exhibited higher reaction rate than graphene oxide (GO). FT-IR and elementary analysis indicated that GO first was reduced to RGO at the beginning of the irradiation, and RGO is the real photoactive species. The theoretical calculations and adsorption experiments reveal a new photochemical debromination pathway based on the weak interaction, such as hydrophobic interaction, pi-pi interaction, and halogen-binding interaction between the PBDEs and RGO. These interactions enable the photoinduced electron transfer from the RGO to PBDEs and lead to the efficient reductive debromination of PBDEs. This study provides a green and low-cost method for removal of the high hydrophobicity halogen organic pollutants in water with environmentally benign carbon nanomaterials.