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题名: Enhanced Electroreductive Removal of Bromate by a Supported Pd-In Bimetallic Catalyst: Kinetics and Mechanism Investigation
作者: Lan, Huachun; Mao, Ran; Tong, Yating; Liu, Yanzhen; Liu, Huijuan; An, Xiaoqiang; Liu, Ruiping
刊名: ENVIRONMENTAL SCIENCE & TECHNOLOGY
出版日期: 2016-11-01
卷号: 50, 期号:21, 页码:11872-11878
DOI: 10.1021/acs.est.6b02822
部门归属: 中国科学院饮用水科学与技术重点实验室
英文摘要: In this work, the electroreductive removal of bromate by a Pd-1-In-4/Al2O3 catalyst in a three-dimensional electrochemical reactor was investigated. A total of 96.4% of bromate could be efficiently reduced and completely converted into bromide within 30 min under optimized conditions. On the basis of the characterization results and kinetics analysis, a synergistic effect of Pd and In was observed, andPd(1)-In-4/Al2O3 had the highest reaction rate constant of 0.1275 min-1 (vs 0.0413, 0.0328, and 0.0253 min-1 for In/Al2O3, Pd/Al2O3, and Al2O3). The results of electron spin resonance and scavenger experiments confirmed that both direct electron transfer and indirect reduction by atomic H* were involved in the bromate removal process, while the direct reduction played a more important role. Moreover, the introduction of In could increase the zeta potential of Pd-1-In-4/Al2O3, facilitating bromate adsorption and its subsequent reduction on the catalyst. Finally, a reaction mechanism for bromate reduction by Pd-1-In-4/Al2O3 was proposed based on all the experimental results.
收录类别: SCI
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内容类型: 期刊论文
URI标识: http://ir.rcees.ac.cn/handle/311016/36176
Appears in Collections:中国科学院饮用水科学与技术重点实验室_期刊论文

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Recommended Citation:
Lan, Huachun,Mao, Ran,Tong, Yating,et al. Enhanced Electroreductive Removal of Bromate by a Supported Pd-In Bimetallic Catalyst: Kinetics and Mechanism Investigation[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2016,50(21):11872-11878.
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