Sn-Ce-Sb/γ-Al<sub>2</sub>O<sub>3</sub>粒子电极体系降解AOⅡ的历程与机理

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Abstract Nd modified PbO₂ anode and Sn-Ce-Sb/γ-Al₂O₃ particle electrode,which were made in our laboratory,were used to prepare two-dimensional electrode,three-dimensional γ-Al₂O₃ particle electrode and three-dimensional Sn-Ce-Sb/γ-Al₂O₃ particle electrode for the degradation of acid orange Ⅱ (AOⅡ).To identify the reaction intermediate products,UV-vis,FTIR and GC-MS were applied.On the basis of the AOⅡ degradation results and kinetics analysis,in the three-dimensional Sn-Ce-Sb/γ-Al₂O₃ particle electrode reactor,TOC removal rate was 1.95 and 1.70 times higher than using two-dimensional electrode and three-dimensional γ-Al₂O₃ particle electrode,and energy consumption had reduced by 41% and 25%,respectively.According to the analysis of the main reaction intermediates,a possible degradation pathway was proposed for AOⅡ degradation by Sn-Ce-Sb/γ-Al₂O₃ particle electrode.And finally,a reaction mechanism was also proposed based on all the experimental results.

Key words： particle electrode Acid Orange Ⅱ electro-catalytic oxidation degradation pathway reaction mechanism

Received: 28 November 2016

PACS:

X703.1

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	Articles by authors
	QIAO Qi-cheng
	LI Ya
	JIN Jie-rong
	SHI Jian
	ZHAO Qin

Cite this article:

QIAO Qi-cheng,LI Ya,JIN Jie-rong等. Reaction pathway and mechanism of the degradation of acid orange Ⅱ by Sn-Ce-Sb/γ-Al₂O₃ particle electrodes[J]. CHINA ENVIRONMENTAL SCIENCECE, 2017, 37(7): 2607-2614.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2017/V37/I7/2607

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