X-ray absorption fine structure study of enhanced sequestration of U(VI) and Se(IV) by montmorillonite decorated with zero-valent iron nanoparticles
Hu, BW; Ye, F; Ren, XM; Zhao, DL; Sheng, GD; Li, H; Ma, JY; Wang, XK; Huang, YY; Sheng, GD (reprint author), Shaoxing Univ, Coll Chem & Chem Engn, Coll Life Sci, Coll Med Sci, 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ENVIRONMENTAL SCIENCE-NANO
ISSN2051-8153
卷号3期号:6页码:1460-1472
文章类型期刊论文
摘要Herein, using Na-montmorillonite and Al-montmorillonite as templates, supported NZVI with superior reactivity, namely NZVI/Na-Mont and NZVI/Al-Mont, was synthesized and applied for enhanced sequestration of U(VI) and Se(IV). The results indicated that the negatively charged Na-Mont can effectively adsorb cationic U(VI), while the positively charged Al-Mont can adsorb anionic Se(IV), significantly enhancing the rate and extent of U(VI) and Se(IV) sequestration on NZVI due to the synergistic effect between adsorption and reduction. The inhibition effect of 1,10-phenanthroline demonstrated that surface-adsorbed Fe(II) on corrosion products and clay surfaces played an indispensable role in U(VI) and Se(IV) reduction, which was further confirmed by XPS identification. XANES analysis demonstrated that in the NZVI system, Na-Mont and Al-Mont promote the reductive transformation of U(VI) into U(IV), and Se(IV) into Se(0)/Se(-II), respectively. EXAFS analysis indicated the presence of Al/Si scattering for U(VI)-treated NZVI/Na-Mont and Se(IV)-treated NZVI/Al-Mont samples, revealing that Na-Mont and Al-Mont reacted as a scavenger for insoluble products like UO2 and FeSe, thereby, more reactive sites can be used for U(VI) and Se(IV) reduction. Our results suggested that the distinct structure of modified montmorillonite can be utilized for synthesizing supported NZVI to create properties compatible for enhanced enrichment of radionuclides, displaying potential application in nuclear waste management.
DOI10.1039/c6en00421k
收录类别SCI
语种英语
WOS记录号WOS:000391423400022
引用统计
被引频次:52[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/26678
专题中科院上海应用物理研究所2011-2018年
通讯作者Sheng, GD (reprint author), Shaoxing Univ, Coll Chem & Chem Engn, Coll Life Sci, Coll Med Sci, 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
Hu, BW,Ye, F,Ren, XM,et al. X-ray absorption fine structure study of enhanced sequestration of U(VI) and Se(IV) by montmorillonite decorated with zero-valent iron nanoparticles[J]. ENVIRONMENTAL SCIENCE-NANO,2016,3(6):1460-1472.
APA Hu, BW.,Ye, F.,Ren, XM.,Zhao, DL.,Sheng, GD.,...&Sheng, GD .(2016).X-ray absorption fine structure study of enhanced sequestration of U(VI) and Se(IV) by montmorillonite decorated with zero-valent iron nanoparticles.ENVIRONMENTAL SCIENCE-NANO,3(6),1460-1472.
MLA Hu, BW,et al."X-ray absorption fine structure study of enhanced sequestration of U(VI) and Se(IV) by montmorillonite decorated with zero-valent iron nanoparticles".ENVIRONMENTAL SCIENCE-NANO 3.6(2016):1460-1472.
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
X-ray absorption fin(2883KB)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
[Hu, BW]的文章
[Ye, F]的文章
[Ren, XM]的文章
百度学术
百度学术中相似的文章
[Hu, BW]的文章
[Ye, F]的文章
[Ren, XM]的文章
必应学术
必应学术中相似的文章
[Hu, BW]的文章
[Ye, F]的文章
[Ren, XM]的文章
相关权益政策
暂无数据
收藏/分享
文件名: X-ray absorption fine structure study of enhanced sequestration of U(VI) and Se(IV) by montmorillonite decorated with zero-valent iron nanoparticles.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。