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题名:
Enhanced sequestration of selenite in water by nanoscale zero valent iron immobilization on carbon nanotubes by a combined batch, XPS and XAFS investigation
作者: Sheng, GD; Alsaedi, A; Shammakh, W; Monaquel, S; Sheng, J; Wang, XK; Li, H; Huang, YY
刊名: CARBON
出版日期: 2016
卷号: 99, 期号:-, 页码:123—130
关键词: HUMIC SUBSTANCE INTERACTION ; NATURAL ORGANIC-MATTER ; ZEROVALENT IRON ; PILLARED BENTONITE ; PLATES FE-0-CNTS ; METHYLENE-BLUE ; MODEL-COMPOUND ; WASTE-WATER ; REMOVAL ; REDUCTION
DOI: 10.1016/j.carbon.2015.12.013
通讯作者: Sheng, GD (reprint author), Shaoxing Univ, Coll Chem & Chem Engn, Shaoxing 312000, Zhejiang, Peoples R China.
文章类型: 期刊文献
英文摘要: In this paper, nanoscale zero-valent iron (NZVI) immobilized on carbon nanotube (CNT) composite (NZVI/CNT) was prepared, characterized and used for the sequestration of Se(IV) in water. The structural analysis revealed that NZVI were uniformly immobilized on CNT surfaces, and thus the oxidation and aggregation of NZVI was obviously minimized. Compared to bare NZVI, the NZVI/CNT exhibited much higher efficiency on Se(IV) sequestration due to the good synergistic effect between CNT adsorption and NZVI reduction. The results from X-ray absorption fine structure (XAFS) revealed that Se(IV) could be almost completely reduced into Se(0)/Se(-II) by NZVI/CNT, while partial reduction occurred on NZVI with a trace of Se(IV) adsorbed on the corrosion products. Besides, the role of pH in Se(IV) sequestration on NZVI/CNT was lower than that on NZVI due to the buffering effect of CNT. Moreover, CNT immobilization could also weaken the inhibition effect of humic acid (HA) on the removal of Se(IV) by NZVI, since CNT showed strong adsorption for HA that blocks potential reactivity. The excellent performance of NZVI/CNT offer a promising material for detoxification of Se(IV) from wastewater. (C) 2015 Elsevier Ltd. All rights reserved.
收录类别: SCI
语种: 英语
WOS记录号: WOS:000369069800015
ISSN号: 0008-6223
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sinap.ac.cn/handle/331007/25717
Appears in Collections:中科院上海应用物理研究所2011-2017年_期刊论文

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Recommended Citation:
Sheng, GD,Alsaedi, A,Shammakh, W,et al. Enhanced sequestration of selenite in water by nanoscale zero valent iron immobilization on carbon nanotubes by a combined batch, XPS and XAFS investigation[J]. CARBON,2016-01-01,99(-):123—130.
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