Doping effects on the electro-degradation of phenol on doped titanium suboxide anodes

doi:10.1016/j.cjche.2017.12.007

	Doping effects on the electro-degradation of phenol on doped titanium suboxide anodes
	Yang, Xuan 1,2; Guo, Jiuji 1; Zhu, Zhaowu 1; Zhang, Hui 1; Qi, Tao 1
刊名	CHINESE JOURNAL OF CHEMICAL ENGINEERING
	2018-04-01
卷号	26 期号:4 页码:830-837
关键词	Titanium suboxide Electro-oxidation Doping effect Phenol Oxalate
ISSN号	1004-9541
DOI	10.1016/j.cjche.2017.12.007
英文摘要	Titanium suboxide is an excellent electrode material for many oxidization reactions. In this article, the electrodes of pure Ti4O7, doped Ti4O7 and the mixed-crystal of Ti4O7 and Ti5O9 were prepared to evaluate their activities and doping effects in the electro-degradation of phenol. It was revealed by the HPLC analysis results that the degradation intermediates and routes were significantly affected by the doping element. On the pure Ti4O7 anode, a series of classic intermediates were obtained from benzoquinone and hydroquinone to various carboxylic acids. These intermediates were degraded gradually to the final organic intermediate of oxalate in all experiments. At last, oxalate was oxidized to CO2 and H2O. Distinctively, the Y-doped Ti4O7 anode directly broke phenol to a-ketoglutaric acid without the intermediates of benzoquinone and hydroquinone. The strong oxidization ability of the Y-doped Ti4O7 anode might be responsible for the highest COD removal ratio. In contrast, the Ga-doped Ti4O7 anode showed the worst degradation activity in this article. Three intermediates of benzoquinone, hydroquinone and maleic acid were found during the degradation. Benefiting from the weak ability, oxalate was efficiently accumulated with a very high yield of 74.6%. The results demonstrated promising applications from electrochemical preparation to wastewater degradation by adjusting the doping reagent of Ti4O7 electrodes. (C) 2017 The Chemical Industry and Engineering Society of China, and Chemical Industry Press. All rights reserved.
资助项目	Key Research Program of Frontier Sciences of CAS[QYZDJ-SSW-JSC021] ; Science and Technology Cooperation for Yunnan Province and CAS[2016IB002] ; Science and Technology Service Network Initiative of CAS[KFJ-SW-STS-148] ; National Natural Science Foundation of China[21506233] ; National Natural Science Foundation of China[51402303] ; National Natural Science Foundation of China[21606241] ; National Natural Science Foundation of China[51374191]
WOS关键词	WASTE-WATER ; ELECTROCHEMICAL OXIDATION ; ELECTROOXIDATION ; SYSTEM
WOS研究方向	Engineering
语种	英语
出版者	CHEMICAL INDUSTRY PRESS
WOS记录号	WOS:000432719100020
资助机构	Key Research Program of Frontier Sciences of CAS ; Science and Technology Cooperation for Yunnan Province and CAS ; Science and Technology Service Network Initiative of CAS ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/24681]
专题	中国科学院过程工程研究所
通讯作者	Zhang, Hui; Qi, Tao
作者单位	1.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Yang, Xuan,Guo, Jiuji,Zhu, Zhaowu,et al. Doping effects on the electro-degradation of phenol on doped titanium suboxide anodes[J]. CHINESE JOURNAL OF CHEMICAL ENGINEERING,2018,26(4):830-837.
APA	Yang, Xuan,Guo, Jiuji,Zhu, Zhaowu,Zhang, Hui,&Qi, Tao.(2018).Doping effects on the electro-degradation of phenol on doped titanium suboxide anodes.CHINESE JOURNAL OF CHEMICAL ENGINEERING,26(4),830-837.
MLA	Yang, Xuan,et al."Doping effects on the electro-degradation of phenol on doped titanium suboxide anodes".CHINESE JOURNAL OF CHEMICAL ENGINEERING 26.4(2018):830-837.