Reductive dehalogenation of haloacetic acids by hemoglobin-loaded carbon nanotube electrode
文献类型：期刊论文
| 作者 | Li, Yu-Ping; Cao, Hong-Bin; Zhang, Yi |
| 刊名 | WATER RESEARCH
 |
| 出版日期 | 2007 |
| 卷号 | 41期号:1页码:197-205 |
| 关键词 | haloacetic acids reductive dehalogenation hemoglobin carbon nanotube |
| ISSN号 | 0043-1354 |
| 其他题名 | Water Res. |
| 中文摘要 | Hemoglobin (Hb) was immobilized on carbon nanotube (CNT) electrode to catalyze the dehalogenation of haloacetic acids (HAAs). FTIR and UV measurements were performed to investigate the activity-keep of Hb after immobilization on CNT. The electrocatalytic behaviors of the Hb-loaded electrode for the dehalogenation of HAAs were studied by cyclic voltammmetry and constant- potential electrolysis technique. An Hb-loaded packed-bed flow reactor was also constructed for bioelectrocatalytic dehalogenation of HAAs. The results showed that Hb retained its nature, the essential features of its native secondary structure, and its biocatalytic activity after immobilization on CNT. Chloroacetic acids and bromoacetic acids could be dehalogenated completely with Hb catalysis through a stepwise dehalogenation process at -0.400V (vs. saturated calomel electrode (SCE)) and -0.200V (vs. SCE), respectively. The removal of 10.5 mM trichloroacetic acid and dichloroacetic acid is ca. 97% and 63%, respectively, with electrolysis for 300 min at -0.400 V (vs. SCE) using the Hb-loaded packed-bed flow reactor, and almost 100% of tribromoacetic acid and dibromoacetic acid was removed with electrolysis for 40 min at -0.200V (vs. SCE). The average current efficiency of Hb-catalytic dehalogenation almost reaches 100%. (c) 2006 Elsevier Ltd. All rights reserved. |
| 英文摘要 | Hemoglobin (Hb) was immobilized on carbon nanotube (CNT) electrode to catalyze the dehalogenation of haloacetic acids (HAAs). FTIR and UV measurements were performed to investigate the activity-keep of Hb after immobilization on CNT. The electrocatalytic behaviors of the Hb-loaded electrode for the dehalogenation of HAAs were studied by cyclic voltammmetry and constant- potential electrolysis technique. An Hb-loaded packed-bed flow reactor was also constructed for bioelectrocatalytic dehalogenation of HAAs. The results showed that Hb retained its nature, the essential features of its native secondary structure, and its biocatalytic activity after immobilization on CNT. Chloroacetic acids and bromoacetic acids could be dehalogenated completely with Hb catalysis through a stepwise dehalogenation process at -0.400V (vs. saturated calomel electrode (SCE)) and -0.200V (vs. SCE), respectively. The removal of 10.5 mM trichloroacetic acid and dichloroacetic acid is ca. 97% and 63%, respectively, with electrolysis for 300 min at -0.400 V (vs. SCE) using the Hb-loaded packed-bed flow reactor, and almost 100% of tribromoacetic acid and dibromoacetic acid was removed with electrolysis for 40 min at -0.200V (vs. SCE). The average current efficiency of Hb-catalytic dehalogenation almost reaches 100%. (c) 2006 Elsevier Ltd. All rights reserved. |
| WOS标题词 | Science & Technology ; Technology ; Life Sciences & Biomedicine ; Physical Sciences |
| 类目[WOS] | Engineering, Environmental ; Environmental Sciences ; Water Resources |
| 研究领域[WOS] | Engineering ; Environmental Sciences & Ecology ; Water Resources |
| 关键词[WOS] | DIRECT ELECTROCHEMISTRY ; TRICHLOROACETIC-ACID ; WATER ; FILMS ; DEGRADATION ; POLLUTANTS ; PRODUCTS |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000243692100025 |
| 公开日期 | 2013-10-15 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/3380]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, Lab Green Proc & Engn, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Yu-Ping,Cao, Hong-Bin,Zhang, Yi. Reductive dehalogenation of haloacetic acids by hemoglobin-loaded carbon nanotube electrode[J]. WATER RESEARCH,2007,41(1):197-205. |
| APA | Li, Yu-Ping,Cao, Hong-Bin,&Zhang, Yi.(2007).Reductive dehalogenation of haloacetic acids by hemoglobin-loaded carbon nanotube electrode.WATER RESEARCH,41(1),197-205. |
| MLA | Li, Yu-Ping,et al."Reductive dehalogenation of haloacetic acids by hemoglobin-loaded carbon nanotube electrode".WATER RESEARCH 41.1(2007):197-205. |
入库方式： OAI收割
来源：过程工程研究所
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