Improving photoelectrochemical reduction of Cr(VI) ions by building α-Fe2O3/TiO2 electrode

被引：14
|
作者：
Wang, Pingping [1 ,2 ]
Dong, Faqin [1 ]
Liu, Mingxue [1 ]
He, Huichao [1 ]
Huo, Tingting [1 ,2 ]
Zhou, Lei [1 ,2 ]
Zhang, Wei [1 ,2 ]
机构：
[1] Southwest Univ Sci & Technol, Key Lab Solid Waste Treatment & Resource Recycle, Minist Educ, Mianyang 621010, Sichuan, Peoples R China
[2] Southwest Univ Sci & Technol, Sch Environm & Resource, Mianyang 621010, Sichuan, Peoples R China
来源：
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH | 2018年 / 25卷 / 23期
关键词：
Hexavalent chromium; alpha-Fe2O3/TiO2; Photoelectrochemical reduction; Cr(VI) reduction; PHOTOCATALYTIC REDUCTION; ELECTROCHEMICAL REDUCTION; AQUEOUS-SOLUTION; SOL-GEL; REMOVAL; CHROMIUM; CR(III); NANOCOMPOSITES; DETOXIFICATION; DEGRADATION;
D O I：
10.1007/s11356-018-1382-y
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Photoelectrochemical process is an environmentally friendly technology and has a wide application in the control of environmental pollutants. Efficient nanophotocatalysts responsive to visible light are still highly attractive. In this work, alpha-Fe2O3/TiO2 were grown on fluorine doped tin oxide (FTO) substrates by hydrothermal method for photoelectrochemical reduction of Cr(VI). Compared with the separate alpha-Fe2O3 and TiO2 electrodes, the composite alpha-Fe2O3/TiO2 electrodes show higher photocurrent density. Under visible light irradiation, 100% removal efficiency of Cr(VI) was obtained after 40 min treatment. The composite alpha-Fe2O3/TiO2 electrodes showed an enhanced absorbance in visible light region and had good stability to photoelectrochemical reduction of Cr(VI). The role of hole scavengers (citric acid and oxalic acid) and pH values was systematically investigated. This novel intensification approach provides new insight on the application of photoelectrochemical reduction in environmental remediation.
引用
收藏
页码：22455 / 22463
页数：9
相关论文
共 50 条
  • [1] Improving photoelectrochemical reduction of Cr(VI) ions by building α-Fe2O3/TiO2 electrode
    Pingping Wang
    Faqin Dong
    Mingxue Liu
    Huichao He
    Tingting Huo
    Lei Zhou
    Wei Zhang
    Environmental Science and Pollution Research, 2018, 25 : 22455 - 22463
  • [2] Improving photoelectrochemical performance by building Fe2O3 heterostructure on TiO2 nanorod arrays
    Cao, Chunlan
    Hu, Chenguo
    Shen, Weidong
    Wang, Shuxia
    Song, Sihong
    Wang, Mingjun
    MATERIALS RESEARCH BULLETIN, 2015, 70 : 155 - 162
  • [3] TiO2/Fe2O3 heterostructures with enhanced photocatalytic reduction of Cr(vi) under visible light irradiation
    Mei, Qiufeng
    Zhang, Feiyan
    Wang, Ning
    Yang, Yun
    Wu, Ronglan
    Wang, Wei
    RSC ADVANCES, 2019, 9 (39) : 22764 - 22771
  • [4] TiO2 and Fe2O3 Films for Photoelectrochemical Water Splitting
    Krysa, Josef
    Zlamal, Martin
    Kment, Stepan
    Brunclikova, Michaela
    Hubicka, Zdenek
    MOLECULES, 2015, 20 (01) : 1046 - 1058
  • [5] PHOTOELECTROLYSIS AT FE2O3/TIO2 HETEROJUNCTION ELECTRODE
    LIOU, FT
    YANG, CY
    LEVINE, SN
    JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1982, 129 (02) : 342 - 345
  • [6] PHOTOELECTROCHEMICAL HYDROGEN PRODUCTION USING TiO2 and Fe2O3 PHOTOANODES
    Krysa, J.
    Zlamal, M.
    Kment, S.
    Hubicka, Z.
    PROCEEDINGS OF THE 4TH INTERNATIONAL CONFERENCE ON CHEMICAL TECHNOLOGY, 1ST EDITION, 2016, : 171 - 175
  • [7] TiO2/Fe2O3 and Fe2O3/TiO2 heterojunction nanocomposites applied to As(III) decontamination
    Michel Zampieri Fidelis
    Gabriele Bolzan Baroncello
    Eduardo Abreu
    Edivaldo dos Santos Filho
    Éder Carlos Ferreira de Souza
    Giane Gonçalves Lenzi
    Rodrigo Brackmann
    Environmental Science and Pollution Research, 2025, 32 (11) : 6839 - 6855
  • [8] Fabrication of Fe2O3/TiO2 Photoanode for Improved Photoelectrochemical Water Splitting
    Oh, Hyo-Jin
    Noh, Kyung-Jong
    Kim, Bo-Ra
    Kang, Wooseung
    Jung, Sang-Chul
    Kim, Sun-Jae
    JAPANESE JOURNAL OF APPLIED PHYSICS, 2013, 52 (01)
  • [9] α-Fe2O3/TiO2 heterostructured photoanode on titanium substrate for photoelectrochemical water electrolysis
    Venkatkarthick, R.
    Davidson, D. Jonas
    Ravichandran, S.
    Vasudevan, S.
    Sozhan, G.
    MATERIALS CHEMISTRY AND PHYSICS, 2017, 199 : 249 - 256
  • [10] TiO2 nanoparticle modified α-Fe2O3 nanospindles for improved photoelectrochemical water oxidation
    Xu, Miao
    Chen, Yang
    Mao, Guobing
    Zhou, Beibei
    Low, Nicholas
    Zhang, Li
    Liu, Qi
    MATERIALS EXPRESS, 2019, 9 (02) : 133 - 140
12345