Photocatalytic degradation of microplastics in aquatic system using metal and non metal- doped TiO2 catalyst
Guo X. Yeszhan Y. Bexeitova K. Toshtay K. Toktarbay Z. Lee J. Azat S.
November 2025Elsevier Ltd
Journal of Water Process Engineering
2025#79
Microplastics (MPs) are ubiquitous in aquatic environments, posing a serious threat to human health. Photocatalytic degradation is a promising method to mitigate MP pollution owing to high degradation efficiency and low toxicity of by-products. The review analyzes the research progress of photocatalytic degradation of MPs on metal and non metal- doped of TiO2. Various types of doped precursors used to enhance photocatalytic efficiency. Non-metal precursors obtained from biomass (e.g., shrimp shells, and mussel extracts), organic compounds precursors (e.g., urea, thiourea, and melamine), and carbon-based nanomaterials. Non-metal precursors include biomass, organic compounds, and carbon-based nanomaterials. Metal precursors encompass nitrates, chlorides, organic compounds and MOFs. Key differences between metal and non-metal doping modifications are highlighted. Metal doping is mainly linked to reductive reactive oxygen species (ROS), while non-metal doping is mostly associated with oxidative reactive species and photogenerated holes (h+). Such difference is important to control energy levels and generate reactive species. Co-doping and heterostructure construction are also considered to control photocatalytic morphology and electronic structure to enhance the photocatalytic performance under visible light conditions.
Material fabrication , Metal oxide , Microplastics , Photocatalytic degradation , Precursors
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Laboratory of Engineering Profile, Satbayev University, Satbayev Str. 22, Almaty, 050000, Kazakhstan
School of Energy and Constructional Engineering, Shandong Huayu University of Technology, Shandong, Dezhou, 253000, China
Faculty of Chemistry and Chemical Technology, Al-Farabi Kazakh National University, Almaty, 050040, Kazakhstan
Department of Global Smart City & School of Civil, Architectural Engineering, and Landscape Architecture, Sungkyunkwan University, Suwon, 16419, South Korea
Laboratory of Engineering Profile
School of Energy and Constructional Engineering
Faculty of Chemistry and Chemical Technology
Department of Global Smart City & School of Civil
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