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Acta Physico-Chimica Sinica  2009, Vol. 25 Issue (06): 1190-1194    DOI: 10.3866/PKU.WHXB20090625
Selective Dehalogenation of 2,4,6-Tribromophenol in Aqueous Solution on a Silver Cathode
ZHU Ying-Hong, XU Ying-Hua, MA Hao, ZHAO Feng-Ming, MA Chun-An
State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering and Materials, Zhejiang University of Technology, Hangzhou 310032, P. R. China
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The electrocatalytic activity of a roughened silver electrode towards the reductive dehalogenation of 2,4,6-tribromophenol was compared to a glassy carbon electrode and a polished silver electrode in basic aqueous solution by cyclic voltammetry (CV). Furthermore, the course of reductive dehalogention of 2,4,6-tribromophenol was studied by CV and controlled-potential electrolysis. Results indicated that roughened silver exhibited more powerful electrocatalytic activity than the glassy carbon electrode and the polished silver electrode for the selective dehalogention of 2,4,6-tribromophenol. The reduction of 2,4,6-tribromophenol was determined to be a stepwise dehalogenation as follows: 2,4,6-tribromophenol→2,4-dibromophenol→2-bromophenol→phenol. In addition, the activity energy needed for the dissociative reduction of the ortho carbon-halogen bond was similar to the para carbon-halogen bond for 2,4,6-tribromophenol and a higher energy was probably required for 2,4-dibromophenol to cleave the ortho carbon-halogen bond compared to the para carbon-halogen bond.

Key wordsSelective dehalogenation      2,4,6-tribromophenol      Silver electrode      Waste water treatment     
Received: 29 October 2008      Published: 10 April 2009
MSC2000:  O646  
Corresponding Authors: MA Chun-An     E-mail:
Cite this article:

ZHU Ying-Hong, XU Ying-Hua, MA Hao, ZHAO Feng-Ming, MA Chun-An. Selective Dehalogenation of 2,4,6-Tribromophenol in Aqueous Solution on a Silver Cathode. Acta Physico-Chimica Sinica, 2009, 25(06): 1190-1194.

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[3] Li Yu-Guang, Porter John F, Chan Chak K. Microstructure Characteristies and Photoreactivity of Calcined P-25 TiO2[J]. Acta Physico-Chimica Sinica, 1999, 15(01): 82-86.
[4] Zhong Qi-Ling, Wang Dun-Qing, Liu Feng-Ming, Su Xiao-Qiong, Shi Cai-Hui, Tian Zhong-Qun. Raman Spectroscopic Studies on Coadsorption of Thiourea with Various Electrolyte Anions at Silver Electrodes[J]. Acta Physico-Chimica Sinica, 1998, 14(06): 562-568.
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[6] Zou Shou-Zhong,Gao Jin-Song,Li Chun-Zeng,Tian Zhong-Qun. Extending SERS Activity at Silver Electrodes to a Wide Potential Region[J]. Acta Physico-Chimica Sinica, 1995, 11(11): 1020-1025.
[7] Fang Ye,Zhong Fa-Ping,Wang Ting,Bai Chun-Li,Tang You-Qi. In-situ Fourier Transform Surface Enhanced Raman Scattering from a Double-helical DNA at Silver and Gold Electrodes[J]. Acta Physico-Chimica Sinica, 1995, 11(09): 854-859.
[8] Liu Chun-Yan; Zhang Zhen-Zong; Ren Xin-Min. SERS of Benzothiazole Compounds Adsorbed on the Silver Electrode[J]. Acta Physico-Chimica Sinica, 1993, 9(04): 533-537.
[9] Chen Chang-Guo; Lin Hui-Qiong; Huang Zong-Qing. Formation and Transformation of the Oxides on Silver Electrode[J]. Acta Physico-Chimica Sinica, 1992, 8(01): 1-3.