Issue: Số 7 - Tháng 3 - 2026Hóa học - Công nghệ thực phẩm
AgI/BiVO4 nanocomposite photocatalyst for antibacterial applications
Published: August 4, 2026
Abstract
Increasing the AgI content in AgI/BiVO₄ nanocomposites resulted in a progressive narrowing of the band gap from 2.4 eV for pristine BiVO₄ (BV0) to 2.35, 2.0, and 1.9 eV for AgI/BV1, AgI/BV2, and AgI/BV3, respectively, thereby enhancing visible-light absorption and charge transport properties. This band gap reduction facilitated more efficient electron–hole separation, promoting the generation of reactive oxygen species such as •O₂⁻ and •OH. Among the synthesized samples, AgI/BV3, with the highest AgI loading, exhibited the most pronounced photocatalytic activity and the lowest minimum inhibitory concentration (MIC) against S. aureus, indicating superior antimicrobial efficacy. These findings demonstrate the strong potential of AgI/BiVO₄ nanocomposites as effective photocatalysts and highlight the critical role of compositional tuning in optimizing pollutant degradation performance, particularly for applications in medical wastewater treatment.
Hạnh T.T. (2025). Những đặc trưng của câu trúc dị thể nanocompozit -AgI/BiVO4. Tạp chí Công Thương, Số 25, Tr. 234-239.
2.
Aniket B., Jayati R. D. and Ramakrishnan G. (2024). Recent advances in semiconductor heterojunctions: a detailed review of the fundamentals of photocatalysis, charge transfer mechanism and materials. RSC Appl. Interfaces, 1, 43-69.
3.
Chen F. Y., Zhang X., Tang Y. B., Wang X. G. and Shu K. K. (2020). Facile and rapid synthesis of a novel spindle-like heterojunction BiVO4 showing enhanced visible-light-driven photoactivity. RSC Adv. 10, 5234-5240.
4.
Clark-Carter D. (2010). Measures of central tendency. In International Encyclopedia of Education 3rd ed., 264-266.
5.
Guo M., Bi C., Cao J. and Chen S. (2019). Improving the stability and photocatalytic activity of AgI via constructing novel Bi12O17Cl2/AgI composite Mater. Lett. 257, 126713.
6.
Hanh T. T., Bang H. T. and Thuan C. N. (2024). ZnO/TiO2 photocatalytic nanocomposite for dye and bacteria removal in wastewater. Mater. Res. Express 11, 085003.
7.
Hanh T. T., Tho T. P., Nhi D. B., Ha T. L. and Thuan C. N. (2025). Design of AgI/BiVO4 heterostructures for photocatalytic antibiotic removal and antimicrobial action. Mater. Res. Express 12, 085003.
8.
Kato S, Kansha Y (2024). Comprehensive review of industrial wastewater treatment Techniques Environ. Sci. Pollut. Res. 31, 51064-51097.
9.
Kaur R., Yadav B. and Tyagi R.D. (2020). Microbiology of hospital wastewater Curr. Dev. Biotechnol. Bioeng. 2020, 103-148.
10.
Liu X. B., Dai X. H., Li L., Shen J., Li W. and Li C. Y. (2024). Antibacterial activity of Ag+/MAF-7 nanocomposites against Enterococcus faecalis. AIP Adv. 14, 115303
11.
Luo L., Zhang T., Wang M., Yun R. and Xiang X. (2020). Recent Advances in Heterogeneous Photo-Driven Oxidation of Organic Molecules by Reactive Oxygen Species. ChemSusChem. 13(19), 5173-5184.
12.
Mulliken, R.S. (1934). A New Electroaffinity Scale: Together with Data on Valence States and on Ionization Potential and Electron Affinities. J. Chem. Phys, 2, 782-793.
13.
Warshagha M. Z. A., Muneer M., Althagafi I. I. and Ahmed S. A. (2023). Highly efficient and stable AgI-CdO nanocomposites for photocatalytic and antibacterial activity. RSC Adv. 13, 5013-26.
14.
Werkneh A. A. and Islam M. A. (2023). Post-treatment disinfection technologies for sustainable removal of antibiotic residues and antimicrobial resistance bacteria from hospital wastewater. Heliyon 9(4), e15360.
15.
Xu M., Yang J., Sun C., Zhang M. and Chen J. (2021). Facile assembly of BiVO₄/protonated g-C₃N₄/AgI with a novel dual Z-scheme mechanism for visible-light photocatalytic degradation of Rhodamine B. J. Mater. Sci. 56, 1328-1346.
16.
Zhang Y., Ju S., Casals G., Tang J., Lin Y., Li X., Liang L., Jia Z., Zeng M. and Casals E. (2023). Facile aqueous synthesis and comparative evaluation of TiO2-semiconductor and TiO2-metal nanohybrid photocatalysts in antibiotics degradation under visible light. RSC Adv. 13, 33187-33203.
