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Simultaneous photocatalytic redox removal of chromium(vi) and arsenic(iii) by hydrothermal carbon-sphere@nano-Fe3O4
Liu, Feng; Zhang, Weifang; Tao, Le; Hao, Boyuan; Zhang, Jing
2019-03-01
Source PublicationENVIRONMENTAL SCIENCE-NANO
ISSN2051-8153
Volume6Issue:3Pages:937-947
AbstractThe coexistence of multiple-component contaminants, such as Cr(VI) and As(III) in acid mine drainage, brings more difficulties in the wastewater treatment. This study developed a novel strategy for simultaneous redox conversion and removal of Cr(VI) and As(III) in solution. By employing iron oxide encapsulated in a hydrothermal carbon sphere (HCS@Fe3O4), the synergistic photocatalytic reduction of Cr(VI) and oxidation of As(III) were markedly accelerated under simulated solar light irradiation. The transformed Cr(III) and As(V) were readily removed by forming Cr(OH)(3) and FeAsO4 precipitates. The Fe(III)/Fe(II) cycle in the system, which was greatly reinforced by photocatalysis in the presence of HCS@Fe3O4, has been demonstrated to be critical in the redox of Cr(VI) and As(III). It can keep sufficient Fe(II) in solution to both directly reduce Cr(VI) and promote the generation of. OH for the oxidation of As(III). These findings provide an effectively synergistic conversion and removal strategy for implications in multiple-contaminated water treatment.
Department环境纳米技术与健康效应重点实验室
Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/43211
Collection环境纳米技术与健康效应重点实验室
Affiliation1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Environm Nanotechnol & Hlth Effect, Beijing 100085, Peoples R China
2.Univ Chinese Acad Sci, Natl Engn Lab VOCs Pollut Control Mat & Technol, Beijing 101408, Peoples R China
3.China Univ Min & Technol, Sch Chem & Environm Engn, Beijing 100083, Peoples R China
Recommended Citation
GB/T 7714
Liu, Feng,Zhang, Weifang,Tao, Le,et al. Simultaneous photocatalytic redox removal of chromium(vi) and arsenic(iii) by hydrothermal carbon-sphere@nano-Fe3O4[J]. ENVIRONMENTAL SCIENCE-NANO,2019,6(3):937-947.
APA Liu, Feng,Zhang, Weifang,Tao, Le,Hao, Boyuan,&Zhang, Jing.(2019).Simultaneous photocatalytic redox removal of chromium(vi) and arsenic(iii) by hydrothermal carbon-sphere@nano-Fe3O4.ENVIRONMENTAL SCIENCE-NANO,6(3),937-947.
MLA Liu, Feng,et al."Simultaneous photocatalytic redox removal of chromium(vi) and arsenic(iii) by hydrothermal carbon-sphere@nano-Fe3O4".ENVIRONMENTAL SCIENCE-NANO 6.3(2019):937-947.
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