Visible-light-driven photocatalytic water disinfection toward escherichia coli 
by nanowired g-C3N4 film

Zhang, Yizhu; Su, Shigang; Zhang, Yuanyuan; Zhang, Xia; Giusto, Paolo; Huang, Xiaohua; Liu, Jian

doi:10.3389/fnano.2021.684788

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Visible-light-driven photocatalytic water disinfection toward escherichia coli by nanowired g-C₃N₄ film

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Giusto, Paolo
Paolo Giusto, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society;

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Citation

Zhang, Y., Su, S., Zhang, Y., Zhang, X., Giusto, P., Huang, X., et al. (2021). Visible-light-driven photocatalytic water disinfection toward escherichia coli by nanowired g-C₃N₄ film. Frontiers in Nanotechnology, 3: 684788. doi:10.3389/fnano.2021.684788.

Cite as: https://hdl.handle.net/21.11116/0000-0008-A384-A

Abstract

Graphitic carbon nitride (g-C₃N₄) as metal-free visible light photocatalyst has recently emerged as a promising candidate for water disinfection. Herein, a nanowire-rich superhydrophilic g-C₃N₄ film was prepared by a vapor-assisted confined deposition method. With a disinfection efficiency of over 99.99 in 4 h under visible light irradiation, this nanowire-rich g-C₃N₄ film was found to perform better than conventional g-C₃N₄ film. Control experiments showed that the disinfection performance of the g-C₃N₄ film reduced significantly after hydrophobic treatment. The potential disinfection mechanism was investigated through scavenger-quenching experiments, which indicate that H₂O₂ was the main active specie and played an important role in bacteria inactivation. Due to the metal-free composition and excellent performance, photocatalytic disinfection by nanowire-rich g-C₃N₄ film would be a promising and cost-effective way for safe drinking water production.