Pham, Ngoc-Diep and Thao, Nguyen Hien and Luan, Van Hoang and Hoang, Hoang Anh and Sagadevan, Suresh and Ngo, Manh-Thang and Duong, Nhung Nguyen Hong and Le, Minh-Vien (2023) Photocatalytic disinfection of E. coli using silver-doped TiO2 coated on cylindrical cordierite honeycomb monolith photoreactor under artificial sunlight irradiation. Topics in Catalysis, 66 (1-4, S). pp. 75-88. ISSN 10225528, DOI https://doi.org/10.1007/s11244-022-01700-8.
Full text not available from this repository.Abstract
In this paper, TiO2 and Ag-doped TiO2 photocatalysts were coated on the cylindrical cordierite honeycomb monolith (CHM) to evaluate their photocatalytic disinfection against Escherichia coli (E. coli) bacteria under artificial sunlight irradiation. The X-ray diffraction (XRD) patterns showed a single-phase anatase structure for TiO2 samples calcined at 500 degrees C for 2 h. With the presence of Ag, the bandgap of TiO2 becomes narrower, and the absorption edge shifts toward the visible region. 6 mol% Ag-doped TiO2 (6Ag-T) showed a reduction of bandgap energy to 2.2 eV. TiO2 and Ag-doped TiO2 solutions were prepared and coated on the channels' surface of CHM for antibacterial applications. Although monolithic TiO2 caused a slight decrease in the number of alive E. coli, Ag dopant showed significant improvement in antibacterial properties. 6 mol% Ag-doped TiO2 coated on CHM (6Ag-T/S10/M) showed strong antibacterial effectiveness against E. coli that the bacterial cell concentration dropped to zero after 1 h of exposure. Impressively, reusability tests with these materials showed superior performance, where the antibacterial remains unchanged after five or seven successive operation cycles.
| Item Type: | Article |
|---|---|
| Funders: | Viet Nam National University Ho Chi Minh City |
| Uncontrolled Keywords: | E. coli; Ag-doped TiO2; Photocatalytic antibacterial; Cordierite honeycomb monolith |
| Subjects: | Q Science > QD Chemistry T Technology > TP Chemical technology |
| Divisions: | Nanotechnology & Catalysis Research Centre |
| Depositing User: | Ms Zaharah Ramly |
| Date Deposited: | 24 Nov 2024 04:55 |
| Last Modified: | 24 Nov 2024 04:55 |
| URI: | http://eprints.um.edu.my/id/eprint/39456 |
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