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All Journal Indonesian Journal of Chemistry
Tran, Trung Tan
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Chemical Engineering, Chemistry & Bioengineering Chemistry

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Solar-Light-Driven N-TiO2-SiO2 Photocatalytic Activity on the Simultaneous Removal of Bisphenol-A and Escherichia coli Le, Minh Vien; Tran, Trung Tan; Hoang, Anh Hoang; Nguyen, Hien Thao; Le, Vu Truong-Son; Luan, Van Hoang; Ngo, Manh Thang
Indonesian Journal of Chemistry Vol 25, No 2 (2025)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.99313

Abstract

N-doped TiO2-SiO2 nanocomposites were synthesized using a facile sol-gel method and characterized through various techniques. Their photocatalytic performance was assessed by degrading BPA (10 mg L−1) and inactivating Escherichia coli (~109 CFU mL−1) under single and dual contaminant conditions using a 26 W solar light simulator. Among the synthesized materials, the N-TiO2-SiO2 nanocomposite with a 10% N:Ti molar ratio (TS5N10) demonstrated the highest photocatalytic activity, achieving 83.9% BPA degradation and complete E. coli disinfection in single contaminant systems after 4 h of irradiation. Notably, TS5N10 exhibited robust performance even in dual-contaminant scenarios involving BPA and E. coli. Mechanistic investigations identified photo-generated holes as the dominant reactive species. The superior performance of TS5N10 was attributed to its nanostructure, high specific surface area, strong light absorption, and reduced photoinduced electron-hole recombination. These results highlight the potential of TS5N10 for practical water treatment applications.
Co-Authors Hoang, Anh Hoang Le, Minh Vien Le, Vu Truong-Son Luan, Van Hoang Ngo, Manh Thang Nguyen, Hien Thao