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感谢参与，应助指数 +1
Reduction of nitrate by bimetallic Fe/Ni nanoparticles
作者:Kang, HY (Kang, Haiyan)[ 1 ] ; Xiu, ZM (Xiu, Zongming)[ 2,3 ] ; Chen, JW (Chen, Jiawei)[ 4 ] ; Cao, WP (Cao, Wenping)[ 5 ] ; Guo, YF (Guo, Yifei)[ 1 ] ; Li, TL (Li, Tielong)[ 3 ] ; Jin, ZH (Jin, Zhaohui)[ 3 ]
ENVIRONMENTAL TECHNOLOGY
卷: 33
期: 18
页: 2185-2192
DOI: 10.1080/09593330.2012.665486
出版年: 2012
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摘要
Bimetallic Fe/Ni nanoparticles were synthesized and their nitrate reduction capacity was studied. Nitrate (354 mg L-1, equal to 5.71 mmol L-1) reduction was performed using Fe/Ni nanoparticles with various Ni contents (1.0, 5.0, 10 and 20%) in an unbuffered condition. Optimum nitrate reduction rate (1.03 +/- 0.087 x 10(-4) mol . min(-1) . g(reduc)(-1)) was obtained with 5.0% nano-scale Fe/Ni, while only 25% nitrate (1.05 +/- 0.091 x 10(-5) mol . min(-1) . g(reduc)(-1)) was transformed by nano-scale Fe-0 within the same reaction time, which means that these bimetallic nanoparticles are obviously more reactive than monometallic nano-scale Fe-0. For this bimetallic system a near-neutral initial pH (6.5) is more favourable than an acidic condition (2.0 and 4.0). Relatively air-stable nano-scale Fe/Ni particles were developed by slowly aging them for 22 h and exhibited similar reactivity to freshly synthesized nano-scale Fe-0. Although undesirable transformation of nitrate (91.0 +/- 0.37%) to ammonium was observed in this study, Fe/Ni particles showed a much higher nitrate reduction rate and an optimum reduction rate at near-neutral pH, which may have important implications for nitrate-contaminated site remediation.
关键词
作者关键词:Fe/Ni; Fe-0; nanoparticle; nitrate; reduction; stability
KeyWords Plus:NANOSCALE IRON PARTICLES; ZERO-VALENT IRON; COMPLETE DECHLORINATION; CATALYTIC-REDUCTION; CHEMICAL-REDUCTION; AQUEOUS-SOLUTION; DRINKING-WATER; REMOVAL; KINETICS; TRICHLOROETHYLENE
作者信息
通讯作者地址: Kang, HY (通讯作者)
Henan Univ Urban Construct, Dept Environm & Municipal Engn, Pingdingshan City, Peoples R China.
地址:
[ 1 ] Henan Univ Urban Construct, Dept Environm & Municipal Engn, Pingdingshan City, Peoples R China
[显示增强组织信息的名称] [ 2 ] Rice Univ, Dept Civil & Environm Engn, Houston, TX USA
[显示增强组织信息的名称] [ 3 ] Nankai Univ, Coll Environm Sci & Engn, Tianjin 300071, Peoples R China
[显示增强组织信息的名称] [ 4 ] China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Beijing, Peoples R China
[ 5 ] Xuzhou Inst Technol, Dept Environm Engn, Xuzhou, Peoples R China
电子邮件地址:kanghaiyan1979@yahoo.com.cn; chenjiawei@cugb.edu.cn
基金资助致谢
基金资助机构 授权号
Fundamental Research Funds for the Central Universities
2010ZD14
2010ZD13
National Program of Control and Treatment of Water Pollution
2009ZX07424-002
Program for New Century Excellent Talents in University
NCET-07-0769
China Geological Survey
Ke [2011]-01-66-07
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出版商
TAYLOR & FRANCIS LTD, 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND
类别 / 分类
研究方向:Environmental Sciences & Ecology
Web of Science 类别:Environmental Sciences
文献信息
文献类型:Article
语种:English
入藏号: WOS:000310134900014
PubMed ID: 23240214
ISSN: 0959-3330
期刊信息
目录： Current Contents Connect®
Impact Factor (影响因子): Journal Citation Reports®
其他信息
IDS 号: 024UO
Web of Science 核心合集中的 "引用的参考文献": 37
 Web of Science 核心合集中的 "被引频次": 1
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