Reductive dechlorination of trichloroacetic acid (TCAA) by electrochemical process over Pd-In/Al2O3 catalyst
文献类型：期刊论文
| 作者 | Liu, Huijuan; Qu, Jiuhui; Liu, Yanzhen; Mao, Ran; Tong, Yating; Lan, Huachun; Zhang, Gong |
| 刊名 | ELECTROCHIMICA ACTA
 |
| 出版日期 | 2017-04-01 |
| 卷号 | 232期号:0页码:13-21 |
| 关键词 | Electrocatalytic Dechlorination Tcaa Removal Pd-in/gamma-al2o3 |
| 英文摘要 | Electrochemical reduction treatment was found to be a promising method for dechlorination of Trichloroacetic acid (TCAA), and acceleration of electron transfer or enhancement of the concentration of atomic H* significantly improve the electrochemical dechlorination process. Bimetallic Pd-based catalysts have the unique property of simultaneously catalyzing the production of atomic H* and reducing target pollutants. Herein, a bimetallic Pd-In electrocatalyst with atomic ratio of 1: 1 was evenly deposited on an Al2O3 substrate, and the bimetallic Pd-In structure was confirmed via X-ray photoelectron spectroscopy (XPS). Electrochemical removal of trichloroacetic acid (TCAA) by the PdIn/Al2O3 catalyst was performed in a three-dimensional reactor. 94% of TCAA with the initial concentration of 500 mu g L-1 could be degraded within 30 min under a relatively low current density (0.9 mA cm (2)). In contrast to the presence of refractory intermediates (dichloroacetic acid (DCAA)) found in the Pd/Al2O3 system, TCAA could be thoroughly reduced to monochloroacetic acid (MCAA) using Pd-In/Al2O3 catalysts. According to scavenger experiments, an electron transfer process and atomic H* formation function both existed in the TCAA reduction process, and the enhanced indirect atomic H* reduction process (confirmed by ESR signals) played a chief role in the TCAA removal. Moreover, the synergistic effects of Pd and In were proven to be able to enhance both direct electron transfer and indirect atomic H* formation, indicating a promising prospect for bimetallic electrochemical reduction treatment. (C) 2017 Elsevier Ltd. All rights reserved. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/39730]  |
| 专题 | 生态环境研究中心_中国科学院饮用水科学与技术重点实验室 |
| 推荐引用方式 GB/T 7714 | Liu, Huijuan,Qu, Jiuhui,Liu, Yanzhen,et al. Reductive dechlorination of trichloroacetic acid (TCAA) by electrochemical process over Pd-In/Al2O3 catalyst[J]. ELECTROCHIMICA ACTA,2017,232(0):13-21. |
| APA | Liu, Huijuan.,Qu, Jiuhui.,Liu, Yanzhen.,Mao, Ran.,Tong, Yating.,...&Zhang, Gong.(2017).Reductive dechlorination of trichloroacetic acid (TCAA) by electrochemical process over Pd-In/Al2O3 catalyst.ELECTROCHIMICA ACTA,232(0),13-21. |
| MLA | Liu, Huijuan,et al."Reductive dechlorination of trichloroacetic acid (TCAA) by electrochemical process over Pd-In/Al2O3 catalyst".ELECTROCHIMICA ACTA 232.0(2017):13-21. |
入库方式： OAI收割
来源：生态环境研究中心
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