Facile fabrication of nanostructured cerium-manganese binary oxide for enhanced arsenite removal from water
Chen, Jing1; Wang, Jianyan1; Zhang, Gaosheng2; Wu, Qiuyue3; Wang, Dongtian3; Zhang, Gaosheng(Guangzhou Univ, Key Lab Water Safety & Protect Pearl River Delta, Minist Educ, Guangzhou 510006, Guangdong, Peoples R China)
2018-02-15
发表期刊CHEMICAL ENGINEERING JOURNAL
ISSN1385-8947
卷号334页码:1518-1526
产权排序第1完成单位
摘要Arsenite [As(III)] is more toxic and more difficult to remove from water than arsenate [As(V)]. For enhanced As (III) removal from water, a new nanostructured Ce-Mn binary oxide with a Ce/Mn molar ratio of 3: 1 was fabricated via a facile one-step oxidation-coprecipitation method at ambient temperature. The synthetic Ce-Mn binary oxide is amorphous with a high surface area of 157m(2)/g. Cerium (Ce) and manganese (Mn) in this oxide exist mainly in the oxidation state of Ce(IV) and Mn(IV), respectively. It can effectively oxidize As(III) to As(V) and efficently adsorb the formed As(V). Moreover, this sorbent exhibits an obviously synergistic effect. The maximal sorption capacity of As(III) is 97.7 mg/g, which is competitive with most of reported sorbents. The As (III) uptake is rapid and slightly affected by tested solution pH, ionic strength, dissolved organic matters and coexisting anions except for phosphate, indicating the high selectivity toward arsenic. The arsenic-loaded Ce-Mn binary oxide could be readily regenerated and repeatedly used. Both Mn and Ce oxides in sorbent are responsible for As(III) oxidation, and the Ce oxide is dominant for adsorbing formed As(V) during As(III) removal. The oxide could be used as an attractive sorbent for As(III) removal from contaminated water, because of its facile and low-cost synthesis process, good As(III) sorption performance, and reusability.
关键词Ce-mn Binary Oxide Arsenite Oxidation Sorption Regeneration Mechanism
DOI10.1016/j.cej.2017.11.062
项目资助者General Program of National Natural Science Foundation of China(51478457) ; Opening Project of the Jiangsu Key Laboratory for Environment Functional Materials(SJHG1312) ; Science and Technology Project of Yantai, China(2014ZH087)
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收录类别SCI
关键词[WOS]ZEROVALENT IRON ; CO OXIDATION ; MIXED OXIDES ; ADSORPTION ; ARSENATE ; SORPTION ; FE ; ADSORBENT ; CATALYSTS ; AS(III)
文章类型Article
语种英语
WOS研究方向Engineering
WOS记录号WOS:000418533400151
引用统计
被引频次:6[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.yic.ac.cn/handle/133337/23552
专题中科院海岸带环境过程与生态修复重点实验室
通讯作者Zhang, Gaosheng; Zhang, Gaosheng(Guangzhou Univ, Key Lab Water Safety & Protect Pearl River Delta, Minist Educ, Guangzhou 510006, Guangdong, Peoples R China)
作者单位1.Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China
2.Guangzhou Univ, Key Lab Water Safety & Protect Pearl River Delta, Minist Educ, Guangzhou 510006, Guangdong, Peoples R China
3.Suzhou Univ Sci & Technol, Environm Sci & Engn Coll, Jiangsu Key Lab Environm Funct Mat, Suzhou 215009, Peoples R China
第一作者单位中国科学院烟台海岸带研究所
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Chen, Jing,Wang, Jianyan,Zhang, Gaosheng,et al. Facile fabrication of nanostructured cerium-manganese binary oxide for enhanced arsenite removal from water[J]. CHEMICAL ENGINEERING JOURNAL,2018,334:1518-1526.
APA Chen, Jing,Wang, Jianyan,Zhang, Gaosheng,Wu, Qiuyue,Wang, Dongtian,&Zhang, Gaosheng.(2018).Facile fabrication of nanostructured cerium-manganese binary oxide for enhanced arsenite removal from water.CHEMICAL ENGINEERING JOURNAL,334,1518-1526.
MLA Chen, Jing,et al."Facile fabrication of nanostructured cerium-manganese binary oxide for enhanced arsenite removal from water".CHEMICAL ENGINEERING JOURNAL 334(2018):1518-1526.
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