New insights into the primary roles of diatomite in the enhanced sequestration of UO22+ by zerovalent iron nanoparticles: An advanced approach utilizing XPS and EXAFS
Sheng, GD; Yang, PJ; Tang, YN; Hu, QY; Li, H; Ren, XM; Hu, BW; Wang, XK; Huang, YY; Hu, BW (reprint author), Shaoxing Univ, Coll Yuanpei Coll Med Sci, Coll Chem & Chem Engn, Shaoxing 312000, Zhejiang, Peoples R China.; Sheng, GD (reprint author), North China Elect Power Univ, Sch Chem & Environm, Beijing 102206, Peoples R China.
2016
发表期刊APPLIED CATALYSIS B-ENVIRONMENTAL
ISSN0926-3373
卷号193期号:-页码:189—197
文章类型期刊文献
摘要In the current paper, nanoscale zero-valent iron (NZVI) was immobilized onto the negatively-charged diatomite to obtain a novel composite (NZVI-D) for the enhanced sequestration of uranyl (U(VI)) in water. The as-synthesized NZVI-D was characterized by SEM, TEM and XRD in detail, and better dispersion of NZVI on diatomite surface was observed, as compared with bare NZVI. The efficiency of U(VI) sequestration by NZVI-D was compared with that of commercial iron and bare NZVI. It was found that NZVI-D exhibits the best efficiency in U(VI) sequestration, showing obvious synergistic effect between diatomite adsorption and NZVI reduction. The primary roles were further revealed by complementary macroscopic and spectroscopic studies. XPS results indicated that reduction of highly toxic and mobile UO22+ into less toxic and mobile UO2 could be enhanced using diatomite-supported NZVI. EXAFS analysis demonstrated that diatomite could react as a scavenger for insoluble products like UO2, and thus more reactive sites could be used for U(VI) reduction. Besides, diatomite play multiple roles on pH buffering and preventing NZVI from aggregating and as adsorbent of Fe(II) produced in-situ during reaction for further U(VI) reduction. This study opens a new avenue for the practical application of NZVI and NZVI-D in environmental remediation. (C) 2016 Elsevier B.V. All rights reserved.
关键词Zero-valent Iron In-situ Remediation Humic Substance Interaction Permeable Reactive Barrier Anoxic Batch Systems Weak Magnetic-field Aqueous-solution Uranium Removal Waste-water Carbon Nanotubes
DOI10.1016/j.apcatb.2016.04.035
收录类别SCI
语种英语
WOS记录号WOS:000377234800020
引用统计
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/25785
专题中科院上海应用物理研究所2011-2018年
通讯作者Sheng, GD; Hu, BW (reprint author), Shaoxing Univ, Coll Yuanpei Coll Med Sci, Coll Chem & Chem Engn, Shaoxing 312000, Zhejiang, Peoples R China.; Sheng, GD (reprint author), North China Elect Power Univ, Sch Chem & Environm, Beijing 102206, Peoples R China.
推荐引用方式
GB/T 7714
Sheng, GD,Yang, PJ,Tang, YN,et al. New insights into the primary roles of diatomite in the enhanced sequestration of UO22+ by zerovalent iron nanoparticles: An advanced approach utilizing XPS and EXAFS[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2016,193(-):189—197.
APA Sheng, GD.,Yang, PJ.,Tang, YN.,Hu, QY.,Li, H.,...&Sheng, GD .(2016).New insights into the primary roles of diatomite in the enhanced sequestration of UO22+ by zerovalent iron nanoparticles: An advanced approach utilizing XPS and EXAFS.APPLIED CATALYSIS B-ENVIRONMENTAL,193(-),189—197.
MLA Sheng, GD,et al."New insights into the primary roles of diatomite in the enhanced sequestration of UO22+ by zerovalent iron nanoparticles: An advanced approach utilizing XPS and EXAFS".APPLIED CATALYSIS B-ENVIRONMENTAL 193.-(2016):189—197.
条目包含的文件 下载所有文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
New insights into th(2798KB)期刊论文作者接受稿开放获取CC BY-NC-SA浏览 下载
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Sheng, GD]的文章
[Yang, PJ]的文章
[Tang, YN]的文章
百度学术
百度学术中相似的文章
[Sheng, GD]的文章
[Yang, PJ]的文章
[Tang, YN]的文章
必应学术
必应学术中相似的文章
[Sheng, GD]的文章
[Yang, PJ]的文章
[Tang, YN]的文章
相关权益政策
暂无数据
收藏/分享
文件名: New insights into the primary roles of diatomite in the enhanced sequestration of UO22+ by zerovalent iron nanoparticles An advanced approach utilizing XPS and EXAFS.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。