典型文献
Enhanced Arsenite Removal Using Bifunctional Electroactive Filter Hybridized with La( OH) 3
文献摘要：
A bifunctional electroactive filter was rationally fabricated for simultaneous oxidation and sequestration of toxic trivalent arsentic As ( Ⅲ). A novel nanoscale La(OH)3 modified electrochemical carbon nanotube ( CNT ) network filter was prepared by a facile electrodeposition strategy. The As (Ⅲ) decontamination kinetics and adsorption capacity were both found to increase with the flow rate (1.5-6.0 mL/min) and the applied voltage (0-2.5 V). The CNT filter hybridized with La (OH)3 (CNT-La(OH)3) has demonstrated the ultra-high adsorption capacity of 750.2 mg/g for As(Ⅲ), which is ascribed to the combined role of sufficient adsorption sites, flow-through filtration and electric field. XPS analysis revealed that the As ( Ⅲ) decontamination mechanism involved a two-step adsorption-oxidation process. The formation of inner-sphere La-O-As complexes, ligand exchange and electro-adsorption are all parts of the As(Ⅲ) adsorption process. The adsorbed neutrally-charged As(Ⅲ) was further oxidized to negatively-charged As(V) when aided by an electric field, which could be effectively sequestrated by La(OH)3. The CNT-La(OH)3 filter shows high stability under alkaline conditions and can be regenerated with dilute NaOH solution. In this study, all experiment results have demonstrated a promising and effective CNT-La(OH)3 electrochemical filter for As(Ⅲ) pollution minimization.
文献关键词：
中图分类号：
作者姓名：
ZHANG Shujing;FANG Xiaofeng;LIU Yanbiao
作者机构：
Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection,College of Environmental Science and Engineering,Donghua University,Shanghai 201620,China;Shanghai Institute of Pollution Control and Ecological Security,Shanghai 200092,China
文献出处：
引用格式：
[1]ZHANG Shujing;FANG Xiaofeng;LIU Yanbiao-.Enhanced Arsenite Removal Using Bifunctional Electroactive Filter Hybridized with La( OH) 3)[J].东华大学学报（英文版）,2022(03):239-250
A类：
Arsenite,Electroactive,arsentic,neutrally,sequestrated
B类：
Enhanced,Removal,Using,Bifunctional,Filter,Hybridized,La,bifunctional,electroactive,filter,was,rationally,fabricated,simultaneous,oxidation,sequestration,toxic,trivalent,novel,nanoscale,modified,electrochemical,carbon,nanotube,CNT,network,prepared,by,facile,electrodeposition,strategy,decontamination,kinetics,adsorption,capacity,were,both,found,increase,flow,applied,voltage,hybridized,has,demonstrated,ultra,high,which,ascribed,combined,role,sufficient,sites,through,filtration,electric,field,XPS,analysis,revealed,that,mechanism,involved,step,process,formation,inner,sphere,complexes,ligand,exchange,parts,adsorbed,charged,further,oxidized,negatively,when,aided,could,effectively,shows,stability,under,alkaline,conditions,can,regenerated,dilute,NaOH,solution,In,this,study,experiment,results,have,promising,pollution,minimization
AB值：
0.566018
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