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Formation of hydroxylated polybrominated diphenyl ethers and hydroxylated polybrominated biphenyls during the adsorption of bromophenols by reduced graphene oxide
Xie, Jieli1; Li, Lingyun2; Sun, Lixiang3; Pei, Zhiguo; Yang, Yanting4; Ma, Jie; Zhang, Qinghua; Wen, Bei; Zhang, Shuzhen
2019-12-15
Source PublicationCHEMICAL ENGINEERING JOURNAL
ISSN1385-8947
Volume378Pages:-
AbstractThe widespread use of bromophenols in industrial products has led to their emergence in natural water environments. This study investigated the oxidative coupling reactions of 2,6-dibromophenol (2,6-diBP), 2,4-dibromophenol (2,4-diBP) and 3,5-dibromophenol (3,5-diBP) during the water purification by reduced graphene oxide (rGO). Results showed that rGO markedly promoted the oxidation of three bromophenols (BPs). The oxidation efficiencies of three BPs were related to their homolytic bond dissociation energies and decreased following the order of 2,6-diBP > 2,4-diBP > 3,5-diBP. Mass spectrometry and density functional theory calculation revealed that C-O and C-C coupling among BPs radicals were the main reaction pathways, with the hydroxylated polybrominated diphenyl ethers (HOPBDEs) and the hydroxylated polybrominated biphenyls (HO-PBBs) being the main reaction products. The oxidant of the reaction was dissolved oxygen, which was first transformed to the surface-bound reactive oxygen species on graphene defects and then oxidized BPs into HO-PBDEs and HO-PBBs. To our knowledge, this is the first report indicating that HO-PBDEs and HO-PBBs could be generated during the adsorption of BPs by rGO. Given the enhanced toxicity of HO-PBDEs and HO-PBBs, caution should be taken when treating BPs-containing water with rGO.
Department环境化学与生态毒理学国家重点实验室
KeywordReduced graphene oxide Bromophenol Oxidative coupling Hydroxylated polybrominated diphenyl ethers Hydroxylated polybrominated biphenyls
Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/42545
Collection环境化学与生态毒理学国家重点实验室
Affiliation1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Chem & Ecotoxicol, POB 2871, Beijing 100085, Peoples R China
2.Univ New South Wales, Sch Civil & Environm Engn, Sydney, NSW 2052, Australia
3.Chinese Acad Agr Sci, Inst Vegetables & Flowers, Minist Agr & Rural Affairs China, Key Lab Vegetables Qual & Safety Control, Beijing 100081, Peoples R China
4.Ludong Univ, Coll Chem & Mat Sci, Yantai 264025, Peoples R China
5.Univ Jinan, Sch Water Conservancy & Environm, Key Lab Water Resources & Environm Engn Univ Shan, Jinan 250022, Shandong, Peoples R China
Recommended Citation
GB/T 7714
Xie, Jieli,Li, Lingyun,Sun, Lixiang,et al. Formation of hydroxylated polybrominated diphenyl ethers and hydroxylated polybrominated biphenyls during the adsorption of bromophenols by reduced graphene oxide[J]. CHEMICAL ENGINEERING JOURNAL,2019,378:-.
APA Xie, Jieli.,Li, Lingyun.,Sun, Lixiang.,Pei, Zhiguo.,Yang, Yanting.,...&Zhang, Shuzhen.(2019).Formation of hydroxylated polybrominated diphenyl ethers and hydroxylated polybrominated biphenyls during the adsorption of bromophenols by reduced graphene oxide.CHEMICAL ENGINEERING JOURNAL,378,-.
MLA Xie, Jieli,et al."Formation of hydroxylated polybrominated diphenyl ethers and hydroxylated polybrominated biphenyls during the adsorption of bromophenols by reduced graphene oxide".CHEMICAL ENGINEERING JOURNAL 378(2019):-.
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