Electrochemical oxidation of nitrogen-heterocyclic compounds at   boron-doped diamond electrode

doi:10.1016/j.chemosphere.2011.10.020

CORC > 北京大学 > 环境科学与工程学院

	Electrochemical oxidation of nitrogen-heterocyclic compounds at boron-doped diamond electrode
	Xing, Xuan ; Zhu, Xiuping ; Li, Hongna ; Jiang, Yi ; Ni, Jinren
刊名	chemosphere
	2012
关键词	Electrochemical oxidation Boron-doped diamond electrode Nitrogen-heterocyclic compounds Wastewater treatment WASTE-WATER TREATMENT P-SUBSTITUTED PHENOLS ANODIC-OXIDATION QUINOLINE DEGRADATION ORGANIC POLLUTANTS AQUEOUS-SOLUTION FILM ELECTRODES SIMPLE INDOLES PBO2 ANODE BENZOTRIAZOLE
DOI	10.1016/j.chemosphere.2011.10.020
英文摘要	Nitrogen-heterocyclic compounds (NHCs) are toxic and bio-refractory contaminants widely spread in environment. This study investigated electrochemical degradation of NHCs at boron-doped diamond (BDD) anode with particular attention to the effect of different number and position of nitrogen atoms in molecular structure. Five classical NHCs with similar structures including indole (ID), quinoline (QL), isoquinoline (IQL), benzotriazole (BT) and benzimidazole (BM) were selected as the target compounds. Results of bulk electrolysis showed that degradation of all NHCs was fit to a pseudo first-order equation. The five compounds were degraded with the following sequence: ID > QL > IQL > BT > BM in terms of their rates of oxidation. Quantum chemical calculation was combined with experimental results to describe the degradation character of NHCs at BDD anode. A linear relationship between degradation rate and delocalization energy was observed, which demonstrated that electronic charge was redistributed through the conjugation system and accumulated at the active sites under the attack of hydroxyl radicals produced at BDD anode. Moreover, atom charge was calculated by semi empirical PM3 method and active sites of NHCs were identified respectively. Analysis of intermediates by GC-MS showed agreement with calculation results. (C) 2011 Elsevier Ltd. All rights reserved.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000300481000008&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Environmental Sciences; SCI(E); EI; PubMed; 15; ARTICLE; 4; 368-375; 86
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/158863]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Xing, Xuan,Zhu, Xiuping,Li, Hongna,et al. Electrochemical oxidation of nitrogen-heterocyclic compounds at boron-doped diamond electrode[J]. chemosphere,2012.
APA	Xing, Xuan,Zhu, Xiuping,Li, Hongna,Jiang, Yi,&Ni, Jinren.(2012).Electrochemical oxidation of nitrogen-heterocyclic compounds at boron-doped diamond electrode.chemosphere.
MLA	Xing, Xuan,et al."Electrochemical oxidation of nitrogen-heterocyclic compounds at boron-doped diamond electrode".chemosphere (2012).