Surface Coating with Advanced Nanocomposites: Photocatalytic Applications in Degradation of Environmental Pollutants for Urban Environments

Articles in Press

Document Type : Review Article

Authors

1 Chemical Engineering Department, Amirkabir University of Technology, Tehran, Iran

2 Chemistry Department, Amirkabir University of Technology, Tehran, Iran

Abstract

This study addresses the critical issue of air pollution in major metropolitan areas, including Tehran, and emphasizes the need for advanced surface coating technologies to reduce environmental contaminants in urban settings. The paper provides a comprehensive analysis of surface coating with advanced nanocomposites and their photocatalytic applications for the degradation of environmental pollutants. Nanocomposites composed of various materials—particularly semiconductor metal oxides such as TiO₂, ZnO, and g-C₃N₄—demonstrate high efficiency in decomposing micro-pollutants and atmospheric contaminants under light irradiation. Several coating techniques, including spray coating, electrophoretic deposition, and electrospinning, are reviewed, each offering distinct advantages depending on specific environmental conditions and surface requirements. Moreover, the integration of nanomaterials with emerging components such as graphene and MXenes enhances photocatalytic performance, corrosion resistance, and long-term stability of the coatings. Innovative synthesis techniques, such as plasma-based and electrochemical methods, also play a significant role in improving the efficiency of these coatings for air and water purification. Harnessing the photocatalytic properties of these materials using solar and other renewable energy sources—particularly in urban environments—offers a promising pathway for reducing air pollution and improving urban living standards.

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Amirkabir Journal of Civil Engineering

Articles in Press, Accepted Manuscript
Available Online from 17 August 2025

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