Tungsten Ion Doping Optimized Photocatalytic Water Purification Performance and Corrosion Resistance of Graphitic Carbon Nitride

doi:10.1007/s40242-025-5004-1

Chemical Research in Chinese Universities ›› 2025, Vol. 41 ›› Issue (3): 583-591.doi: 10.1007/s40242-025-5004-1

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Tungsten Ion Doping Optimized Photocatalytic Water Purification Performance and Corrosion Resistance of Graphitic Carbon Nitride

ZHOU Shiyu^1,2, LI Pei^1,2, ZHANG Chunbo^1,2, WANG Yang^1,2, DONG Guanliang^1,2, JIA Ruokun³

1. Jilin Province Electric Power Research Institute, Changchun 130021, P. R. China;
2. State Grid Jilin Electric Power Research Institute, Changchun 130021, P. R. China;
3. College of Chemical Engineering, Northeast Electric Power University, Jilin 132012, P. R. China

Received:2025-01-04 Revised:2025-02-14 Online:2025-06-01 Published:2025-05-27
Contact: ZHOU Shiyu,E-mail:zhoushy@jl.sgcc.com.cn;JIA Ruokun,E-mail:20102175@neepu.edu.cn E-mail:zhoushy@jl.sgcc.com.cn;20102175@neepu.edu.cn
Supported by:
This work was supported by the Jilin Electric Power Science Research Institute Co., Ltd. Science and Technology Development Project, China (No. KY-GS-24-01-05).

Abstract

Abstract: A tungsten-doping strategy was developed to enhance the photocatalytic dye degradation and corrosion resistance of graphitic carbon nitride (CN). Using WCl₆ as a tungsten source, tungsten-doped CN (W-CN) was synthesized through a straightforward copolymerization process. Comprehensive characterization confirmed that tungsten ion incorporation modified the electronic band structure and disrupted local electron distribution, leading to extended visible light adsorption and improved separation and migration of photoexcited charge carriers. The resulting W-CN photocatalyst achieved a 5.14-fold increase in atrazine (ATZ) degradation rate. Additionally, the corrosion resistance of W-CN within waterborne polyurethane (WPU) coatings on metal substrates was evaluated. Enhanced hydrophobicity and a stronger physical barrier effect enabled the W-CN@WPU composite coating to significantly improve the corrosion resistance of Q235 carbon steel. This study demonstrates that tungsten doping not only boosts the photocatalytic degradation efficiency of organic pollutants by CN but also enhances the corrosion resistance of WPU coatings.

Key words: Graphitic carbon nitride, Tungsten-doping, Atrazine degradation, Anti-corrosion

ZHOU Shiyu, LI Pei, ZHANG Chunbo, WANG Yang, DONG Guanliang, JIA Ruokun. Tungsten Ion Doping Optimized Photocatalytic Water Purification Performance and Corrosion Resistance of Graphitic Carbon Nitride[J]. Chemical Research in Chinese Universities, 2025, 41(3): 583-591.

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Tungsten Ion Doping Optimized Photocatalytic Water Purification Performance and Corrosion Resistance of Graphitic Carbon Nitride

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