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Nano Research 2023, 16(2): 2192-2198 https://doi.org/10.1007/s12274-022-4978-y
Research Article | Issue | Published: 04 November 2022

Self-powered electrochemical water treatment system for pollutant degradation and bacterial inactivation based on high-efficient Co(OH)2/Pt electrocatalyst

Show Author's Information Zhuo Wang1,§,  Xi Liang1,2,§,  Zhirong Liu1,2,§,  Tian Huang3,1,§,  Shaobo Wang3,  Shuncheng Yao1,2,  Yiming Ding3,1,  Jiaming Zhang1,2,  Xingyi Wan1,2,  Zhong Lin Wang1,3,4( ),  Linlin Li1,2,3( )
Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 101400, China
School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
Center on Nanoenergy Research, School of physical Science and Technology, Guangxi University, Nanning 530004, China
School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0245, USA

§ Zhuo Wang, Xi Liang, Zhirong Liu, and Tian Huang contributed equally to this work.

Keywords:
triboelectric nanogenerator, self-powered, water treatment, nanocatalyst, electro-catalysis
Topics:
Electrocatalysts
Cite this article:
Wang Z, Liang X, Liu Z, et al. Self-powered electrochemical water treatment system for pollutant degradation and bacterial inactivation based on high-efficient Co(OH)2/Pt electrocatalyst. Nano Research, 2023, 16(2): 2192-2198. https://doi.org/10.1007/s12274-022-4978-y
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Abstract Electronic supplementary material About this article

Electrochemical system with electro-Fenton reaction is an effective pathway for oxidative degradation of refractory organic pollutants for water treatment. However, the method is limited by the low catalytic efficiency and high electrical cost in practical applications. This work presents a self-powered and high-efficient electrochemical system for water treatment including pollutant degradation and bacterial inactivation, which is composed of a self-powered triboelectric nanogenerator (TENG) converting mechanical energy into electrical energy, a power management circuit integrated with a supercapacitor to store the harvesting electrical energy temporarily, and an electrochemical setup integrated with two-dimentional Co(OH)2/Pt nanosheet as electrocatalyst. The nanocatalyst, ultrafine Pt nanoparticles (Pt NPs) loaded on Co(OH)2 nanosheet (Co(OH)2/Pt), is synthesized by a facile one step hydrothermal reaction without any surfactant, which can improve H2O2 and hydroxyl radical production via redox reaction. This self-powered electrocatalytic system is able to degrade nearly 100% of organic pollutant within 100 min, and efficiently kill bacteria. This work shows great potential to develop high-efficient and self-powered electrochemical water treatment system through integrating TENG and nanocatalyst.

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Publication history
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Acknowledgements

Publication history

Received: 28 July 2022
Revised: 26 August 2022
Accepted: 27 August 2022
Published: 04 November 2022
Issue date: February 2023

Copyright

© Tsinghua University Press 2022

Acknowledgements

Acknowledgements

The work was supported by the Strategic Priority Research Program of The Chinese Academy of Sciences (No. XDA16021103), National Natural Science Foundation (Nos. 82072065 and 81471784), the National Youth Talent Support Program and the China Postdoctoral Science Foundation (Nos. BX2021299 and 2021M703166), and the Fundamental Research Funds for the Central Universities.

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