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Three-dimensional honeycomb-like structured zero-valent iron/chitosan composite foams for effective removal of inorganic arsenic in water

文献类型：期刊论文

作者Su, Fengchao1,2; Zhou, Hongjian2; Zhang, Yunxia2; Wang, Guozhong1,2
刊名JOURNAL OF COLLOID AND INTERFACE SCIENCE
出版日期2016-09-15
卷号478期号:无页码:421-429
关键词Porous Structure Zero-valent Iron Inorganic Arsenic Secondary Pollution Chitosan Composite
DOI10.1016/j.jcis.2016.06.035
文献子类Article
英文摘要A facile freeze-drying method was presented to fabricate three dimensional (3D) honeycomb-like structured nanoscale zero-valent iron/chitosan composite foams (ICCFs) for effective removal of inorganic arsenic in water. It was found that freezing temperature has important influence on the formation of 3D network structure of ICCFs. The ICCFs obtained at freeze temperature of -80 degrees C exhibits oriented porous structure with good mechanical property than that at -20 degrees C, thus improved excellent removal capability of As(III) and As(V) up to 114.9 mg g(-1) and 86.87 mg g(-1), respectively. Further, the adsorption kinetics of ICCFs on As(III) and As(V) can be described by pseudo-second order model and their adsorption isotherms follow Langmuir adsorption model. The superior removal performance of ICCFs on As(III) and As(V) can be ascribed to its oriented porous structure with abundant adsorption active sites resulted from nZVI and O, N-containing functional groups in ICCFs. Importantly, it was found that the O, N-containing functional groups of chitosan in ICCFs can adequately bind with the dissolved Fe3+ ions from oxidation of nZVI to form Fe3+-Chitosan complex during removal of As(III) and As(V), thus effectively avoiding the dissolved Fe3+ ions into solution to produce secondary pollution. A possible adsorption-coupled reduction mechanism of ICCFs on As(III) and As(V) was also proposed based on the experimental results. We believe that this work would be helpful to develop low-cost and abundant chitosan-based materials as high performance adsorbents for environmental remediation applications. (C) 2016 Elsevier Inc. All rights reserved.
WOS关键词POROUS GRAPHENE MATERIALS ; AQUEOUS-SOLUTIONS ; ZEROVALENT IRON ; HEAVY-METALS ; WASTE-WATER ; CHITOSAN BEADS ; MEDAKA FISH ; NANOPARTICLES ; GROUNDWATER ; AS(III)
WOS研究方向Chemistry
语种英语
WOS记录号WOS:000380385500048
资助机构National Basic Research Program of China(2013CB934302) ; National Basic Research Program of China(2013CB934302) ; National Basic Research Program of China(2013CB934302) ; National Basic Research Program of China(2013CB934302) ; National Basic Research Program of China(2013CB934302) ; National Basic Research Program of China(2013CB934302) ; National Basic Research Program of China(2013CB934302) ; National Basic Research Program of China(2013CB934302) ; Natural Science Foundation of China(51472246 ; Natural Science Foundation of China(51472246 ; Natural Science Foundation of China(51472246 ; Natural Science Foundation of China(51472246 ; Natural Science Foundation of China(51472246 ; Natural Science Foundation of China(51472246 ; Natural Science Foundation of China(51472246 ; Natural Science Foundation of China(51472246 ; 21177132 ; 21177132 ; 21177132 ; 21177132 ; 21177132 ; 21177132 ; 21177132 ; 21177132 ; 51502296) ; 51502296) ; 51502296) ; 51502296) ; 51502296) ; 51502296) ; 51502296) ; 51502296) ; National Basic Research Program of China(2013CB934302) ; National Basic Research Program of China(2013CB934302) ; National Basic Research Program of China(2013CB934302) ; National Basic Research Program of China(2013CB934302) ; National Basic Research Program of China(2013CB934302) ; National Basic Research Program of China(2013CB934302) ; National Basic Research Program of China(2013CB934302) ; National Basic Research Program of China(2013CB934302) ; Natural Science Foundation of China(51472246 ; Natural Science Foundation of China(51472246 ; Natural Science Foundation of China(51472246 ; Natural Science Foundation of China(51472246 ; Natural Science Foundation of China(51472246 ; Natural Science Foundation of China(51472246 ; Natural Science Foundation of China(51472246 ; Natural Science Foundation of China(51472246 ; 21177132 ; 21177132 ; 21177132 ; 21177132 ; 21177132 ; 21177132 ; 21177132 ; 21177132 ; 51502296) ; 51502296) ; 51502296) ; 51502296) ; 51502296) ; 51502296) ; 51502296) ; 51502296)
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/30609]  
专题合肥物质科学研究院_中科院固体物理研究所
作者单位1.Anhui Univ, Sch Phys & Mat Sci, Hefei 230601, Peoples R China
2.Chinese Acad Sci, Inst Solid State Phys, Anhui Key Lab Nanomat & Nanotechnol, Key Lab Mat Phys,Ctr Environm & Energy Nanomat, Hefei 230031, Peoples R China
推荐引用方式
GB/T 7714		 Su, Fengchao,Zhou, Hongjian,Zhang, Yunxia,et al. Three-dimensional honeycomb-like structured zero-valent iron/chitosan composite foams for effective removal of inorganic arsenic in water[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2016,478(无):421-429.
APA Su, Fengchao,Zhou, Hongjian,Zhang, Yunxia,&Wang, Guozhong.(2016).Three-dimensional honeycomb-like structured zero-valent iron/chitosan composite foams for effective removal of inorganic arsenic in water.JOURNAL OF COLLOID AND INTERFACE SCIENCE,478(无),421-429.
MLA Su, Fengchao,et al."Three-dimensional honeycomb-like structured zero-valent iron/chitosan composite foams for effective removal of inorganic arsenic in water".JOURNAL OF COLLOID AND INTERFACE SCIENCE 478.无(2016):421-429.

入库方式： OAI收割

来源：合肥物质科学研究院

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