Photochemical Anti-Fouling Approach for Electrochemical Pollutant Degradation on Facet-Tailored TiO2 Single Crystals

View Author Information
CAS Key Laboratory of Urban Pollutant Conversion, Department of Chemistry, University of Science and Technology of China, Hefei, 230026, China
Department of Municipal Engineering, Hefei University of Technology, Hefei, 230009, China
*(A.-Y.Z.) E-mail: [email protected]
*(H.-Q.Y.) E-mail: [email protected]
Cite this: Environ. Sci. Technol. 2017, 51, 19, 11326–11335
Publication Date (Web):September 11, 2017
https://doi.org/10.1021/acs.est.7b04105
Copyright © 2017 American Chemical Society
Article Views
1592
Altmetric
-
Citations
LEARN ABOUT THESE METRICS
Read OnlinePDF (3 MB)
Supporting Info (1)»

Abstract

Electrochemical degradation of refractory pollutants at low bias before oxygen evolution exhibits high current efficiency and low energy consumption, but its severe electrode fouling largely limits practical applications. In this work, a new antifouling strategy was developed and validated for electrochemical pollutant degradation by photochemical oxidation on facet-tailored {001}-exposed TiO2 single crystals. Electrode fouling from anodic polymers at a low bias was greatly relieved by the free ·OH-mediated photocatalysis under UV irradiation, thus efficient and stable degradation of bisphenol A, a typical environmental endocrine disrupter, and treatment of landfill leachate were accomplished without remarkable oxygen evolution in synergistic photoassisted electrochemical system. Electrochemical and spectroscopic measurements indicated a clean electrode surface during cyclic pollutant degradation. Such a photochemical antifouling strategy for low-bias anodic pollutants degradation was mainly attributed to the improved electric conductivity and excellent electrochemical and photochemical activities of tailored TiO2 anodic material, whose unique properties originated from the favorable surface atomic and electronic structures of high-energy {001} polar facet and single-crystalline structure. Our work opens up a brand new approach to develop catalytic systems for efficient degradation of refractory contaminants in water and wastewater.

Supporting Information

ARTICLE SECTIONS
Jump To

The Supporting Information is available free of charge on the ACS Publications website at DOI: 10.1021/acs.est.7b04105.

  • Characterizations of TiO2 SCs and P25 (Figures S–S), Sb-doped SnO2/Ti (Figures S1–S7) and Ti0.7Ru0.3O2/Ti electrodes (Figures S8–S10), additional PC, EC and PEC characterizations and BPA degradation tests (Figures S11–S13), evolution of main BPA degradation intermediates (Figures S26), light spectrum of the utilized Xe lamp (Figure S27), BPA adsorption tests (Figures S28), EC and PEC kinetic constant ratios (Figure S29), diagram of the PEC cell (Scheme S1), BPA degradation pathway (Scheme S2), the general PEC mechanism (Scheme S3), characteristics of landfill leachate (Table S1) and BPA removal behaviors under various conditions (Table S2) (PDF)

Terms & Conditions

Most electronic Supporting Information files are available without a subscription to ACS Web Editions. Such files may be downloaded by article for research use (if there is a public use license linked to the relevant article, that license may permit other uses). Permission may be obtained from ACS for other uses through requests via the RightsLink permission system: http://pubs.acs.org/page/copyright/permissions.html.

Cited By


This article is cited by 18 publications.

  1. Rui Song, Haibo Chi, Qiuling Ma, Dongfeng Li, Xiaomei Wang, Wensheng Gao, Hao Wang, Xiuli Wang, Zelong Li, Can Li. Highly Efficient Degradation of Persistent Pollutants with 3D Nanocone TiO2-Based Photoelectrocatalysis. Journal of the American Chemical Society 2021, 143 (34) , 13664-13674. https://doi.org/10.1021/jacs.1c05008
  2. Chang Liu, Ai-Yong Zhang, Yang Si, Dan-Ni Pei, Han-Qing Yu. Photochemical Protection of Reactive Sites on Defective TiO2–x Surface for Electrochemical Water Treatment. Environmental Science & Technology 2019, 53 (13) , 7641-7652. https://doi.org/10.1021/acs.est.9b01307
  3. Guixia Zhao, Yubing Sun, Yukun Zhao, Tao Wen, Xiangxue Wang, Zhongshan Chen, Guodong Sheng, Chuncheng Chen, Xiangke Wang. Enhanced Photocatalytic Simultaneous Removals of Cr(VI) and Bisphenol A over Co(II)-Modified TiO2. Langmuir 2019, 35 (1) , 276-283. https://doi.org/10.1021/acs.langmuir.8b03214
  4. Hui-Shan Meng, Yang Liu, Peng-Xi Liu, Lu-Lu Zhou, Chen Chen, Wei-Kang Wang, Juan Xu. Development of a three-dimensional photoelectrocatalytic reactor packed with granular sludge carbon photoelectrocatalyst for efficient wastewater treatment. Separation and Purification Technology 2021, 277 , 119642. https://doi.org/10.1016/j.seppur.2021.119642
  5. Chung-Shin Yuan, Iau-Ren Ie, Ji-Ren Zheng, Chung-Hsuan Hung, Zu-Bei Lin, Ching-Hsun Shih. A Review of Electrical Assisted Photocatalytic Technologies for the Treatment of Multi-Phase Pollutants. Catalysts 2021, 11 (11) , 1332. https://doi.org/10.3390/catal11111332
  6. Zhongran Dai, Junjie Lian, Yusu Sun, Le Li, Hui Zhang, Nan Hu, Dexin Ding. Fabrication of g-C3N4/Sn3O4/Ni electrode for highly efficient photoelectrocatalytic reduction of U(VI). Chemical Engineering Journal 2021, 244 , 133766. https://doi.org/10.1016/j.cej.2021.133766
  7. Cairu Shao, Litian Lin, Lijuan Duan, Yusi Jiang, Qingyi Shao, Hongyang Cao. Nickel-enhanced electrochemical activities of shape-tailored TiO2{001} nanocrystals for water treatment: A combined experimental and DFT studies. Electrochimica Acta 2021, 376 , 138066. https://doi.org/10.1016/j.electacta.2021.138066
  8. Guoneng Cai, Zhenzhong Yu, Dianping Tang. Actuating photoelectrochemical sensing sensitivity coupling core-core-shell [email protected]@TiO2 with molecularly imprinted polypyrrole. Talanta 2020, 219 , 121341. https://doi.org/10.1016/j.talanta.2020.121341
  9. Jieru Wu, Wenwei Wang, Yao Tian, Chunxiao Song, Hong Qiu, Hao Xue. Piezotronic effect boosted photocatalytic performance of heterostructured BaTiO3/TiO2 nanofibers for degradation of organic pollutants. Nano Energy 2020, 77 , 105122. https://doi.org/10.1016/j.nanoen.2020.105122
  10. Zhiqiang Wang, Lili Zhang, Xiao Zhang, Chun Hu, Liang Wang, Baoyou Shi, Xingzhong Cao. Enhanced photocatalytic destruction of pollutants by surface W vacancies in VW-Bi2WO6 under visible light. Journal of Colloid and Interface Science 2020, 576 , 385-393. https://doi.org/10.1016/j.jcis.2020.05.047
  11. Wei-Kang Wang, Wenze Zhu, Liang Mao, Junying Zhang, Zhaoyu Zhou, Guohua Zhao. Two-dimensional TiO2-g-C3N4 with both Ti N and C O bridges with excellent conductivity for synergistic photoelectrocatalytic degradation of bisphenol A. Journal of Colloid and Interface Science 2019, 557 , 227-235. https://doi.org/10.1016/j.jcis.2019.08.088
  12. Chang Liu, Yuan Min, Ai-Yong Zhang, Yang Si, Jie-Jie Chen, Han-Qing Yu. Electrochemical treatment of phenol-containing wastewater by facet-tailored TiO2: Efficiency, characteristics and mechanisms. Water Research 2019, 165 , 114980. https://doi.org/10.1016/j.watres.2019.114980
  13. Yang Si, Ai-Yong Zhang, Chang Liu, Dan-Ni Pei, Han-Qing Yu. Photo-assisted electrochemical detection of bisphenol A in water samples by renewable {001}-exposed TiO2 single crystals. Water Research 2019, 157 , 30-39. https://doi.org/10.1016/j.watres.2019.03.088
  14. Jun Zhang, Dandan Zhou, Shuangshi Dong, Nanqi Ren. Respective construction of Type-II and direct Z-scheme heterostructure by selectively depositing CdS on {001} and {101} facets of TiO2 nanosheet with CDots modification: A comprehensive comparison. Journal of Hazardous Materials 2019, 366 , 311-320. https://doi.org/10.1016/j.jhazmat.2018.12.013
  15. Teng Ma, Yasuo Kimura, Daisuke Tadaki, Ayumi Hirano-Iwata, Michio Niwano. In Situ Infrared Observation of a Photo-Decomposition Process of Organic Contaminants on a TiO 2  Nanotube Film Surface. Journal of The Electrochemical Society 2019, 166 (15) , H842-H848. https://doi.org/10.1149/2.1151915jes
  16. Xing Gao, Tong Zhang. An overview: Facet-dependent metal oxide semiconductor gas sensors. Sensors and Actuators B: Chemical 2018, 277 , 604-633. https://doi.org/10.1016/j.snb.2018.08.129
  17. Jingyu Qin, Jing Shen, Xiangyang Xu, Yuan Yuan, Guangyu He, Haiqun Chen. A glassy carbon electrode modified with nitrogen-doped reduced graphene oxide and melamine for ultra-sensitive voltammetric determination of bisphenol A. Microchimica Acta 2018, 185 (10) https://doi.org/10.1007/s00604-018-2998-9
  18. Jing Luo, Yanbin Wang, Di Cao, Ke Xiao, Tao Guo, Xu Zhao. Enhanced photoelectrocatalytic degradation of 2,4-dichlorophenol by TiO2/Ru-IrO2 bifacial electrode. Chemical Engineering Journal 2018, 343 , 69-77. https://doi.org/10.1016/j.cej.2018.02.120