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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

文献类型：期刊论文

作者Sheng, Guodong1,2; Yang, Pengjie1; Tang, Yanna1; Hu, Qingyuan1; Li, Hui1; Ren, Xuemei4; Hu, Baowei1; Wang, Xiangke1,2; Huang, Yuying3
刊名APPLIED CATALYSIS B-ENVIRONMENTAL
出版日期2016-09-15
卷号193期号:无页码:189-197
关键词Diatomite Nanoscale Zero Valent Iron Enhanced u(Vi) Sequestration Primary Roles
DOI10.1016/j.apcatb.2016.04.035
文献子类Article
英文摘要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.
WOS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
WOS研究方向Chemistry ; Engineering
语种英语
WOS记录号WOS:000377234800020
资助机构National Natural Science Foundation of China(21577093 ; National Natural Science Foundation of China(21577093 ; National Natural Science Foundation of China(21577093 ; National Natural Science Foundation of China(21577093 ; National Natural Science Foundation of China(21577093 ; National Natural Science Foundation of China(21577093 ; National Natural Science Foundation of China(21577093 ; National Natural Science Foundation of China(21577093 ; National Natural Science Foundation of China(21577093 ; National Natural Science Foundation of China(21577093 ; National Natural Science Foundation of China(21577093 ; National Natural Science Foundation of China(21577093 ; National Natural Science Foundation of China(21577093 ; National Natural Science Foundation of China(21577093 ; National Natural Science Foundation of China(21577093 ; National Natural Science Foundation of China(21577093 ; Natural Science Foundation of Zhejiang Province(LY15B070001) ; Natural Science Foundation of Zhejiang Province(LY15B070001) ; Natural Science Foundation of Zhejiang Province(LY15B070001) ; Natural Science Foundation of Zhejiang Province(LY15B070001) ; Natural Science Foundation of Zhejiang Province(LY15B070001) ; Natural Science Foundation of Zhejiang Province(LY15B070001) ; Natural Science Foundation of Zhejiang Province(LY15B070001) ; Natural Science Foundation of Zhejiang Province(LY15B070001) ; Natural Science Foundation of Zhejiang Province(LY15B070001) ; Natural Science Foundation of Zhejiang Province(LY15B070001) ; Natural Science Foundation of Zhejiang Province(LY15B070001) ; Natural Science Foundation of Zhejiang Province(LY15B070001) ; Natural Science Foundation of Zhejiang Province(LY15B070001) ; Natural Science Foundation of Zhejiang Province(LY15B070001) ; Natural Science Foundation of Zhejiang Province(LY15B070001) ; Natural Science Foundation of Zhejiang Province(LY15B070001) ; 21207092) ; 21207092) ; 21207092) ; 21207092) ; 21207092) ; 21207092) ; 21207092) ; 21207092) ; 21207092) ; 21207092) ; 21207092) ; 21207092) ; 21207092) ; 21207092) ; 21207092) ; 21207092) ; National Natural Science Foundation of China(21577093 ; National Natural Science Foundation of China(21577093 ; National Natural Science Foundation of China(21577093 ; National Natural Science Foundation of China(21577093 ; National Natural Science Foundation of China(21577093 ; National Natural Science Foundation of China(21577093 ; National Natural Science Foundation of China(21577093 ; National Natural Science Foundation of China(21577093 ; National Natural Science Foundation of China(21577093 ; National Natural Science Foundation of China(21577093 ; National Natural Science Foundation of China(21577093 ; National Natural Science Foundation of China(21577093 ; National Natural Science Foundation of China(21577093 ; National Natural Science Foundation of China(21577093 ; National Natural Science Foundation of China(21577093 ; National Natural Science Foundation of China(21577093 ; Natural Science Foundation of Zhejiang Province(LY15B070001) ; Natural Science Foundation of Zhejiang Province(LY15B070001) ; Natural Science Foundation of Zhejiang Province(LY15B070001) ; Natural Science Foundation of Zhejiang Province(LY15B070001) ; Natural Science Foundation of Zhejiang Province(LY15B070001) ; Natural Science Foundation of Zhejiang Province(LY15B070001) ; Natural Science Foundation of Zhejiang Province(LY15B070001) ; Natural Science Foundation of Zhejiang Province(LY15B070001) ; Natural Science Foundation of Zhejiang Province(LY15B070001) ; Natural Science Foundation of Zhejiang Province(LY15B070001) ; Natural Science Foundation of Zhejiang Province(LY15B070001) ; Natural Science Foundation of Zhejiang Province(LY15B070001) ; Natural Science Foundation of Zhejiang Province(LY15B070001) ; Natural Science Foundation of Zhejiang Province(LY15B070001) ; Natural Science Foundation of Zhejiang Province(LY15B070001) ; Natural Science Foundation of Zhejiang Province(LY15B070001) ; 21207092) ; 21207092) ; 21207092) ; 21207092) ; 21207092) ; 21207092) ; 21207092) ; 21207092) ; 21207092) ; 21207092) ; 21207092) ; 21207092) ; 21207092) ; 21207092) ; 21207092) ; 21207092)
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/21842]  
专题合肥物质科学研究院_中科院等离子体物理研究所
作者单位1.Shaoxing Univ, Coll Yuanpei Coll Med Sci, Coll Chem & Chem Engn, Shaoxing 312000, Zhejiang, Peoples R China
2.North China Elect Power Univ, Sch Chem & Environm, Beijing 102206, Peoples R China
3.Chinese Acad Sci, Shanghai Inst Appl Phys, SSRF, Shanghai 201204, Peoples R China
4.Chinese Acad Sci, Inst Plasma Phys, POB 1126, Hefei 230031, Peoples R China
推荐引用方式
GB/T 7714		 Sheng, Guodong,Yang, Pengjie,Tang, Yanna,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(无):189-197.
APA Sheng, Guodong.,Yang, Pengjie.,Tang, Yanna.,Hu, Qingyuan.,Li, Hui.,...&Huang, Yuying.(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(无),189-197.
MLA Sheng, Guodong,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.无(2016):189-197.

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