Staff View: Photocatalytic disinfection of E. coli using silver-doped TiO2 coated on cylindrical cordierite honeycomb monolith photoreactor under artificial sunlight irradiation

Photocatalytic disinfection of E. coli using silver-doped TiO2 coated on cylindrical cordierite honeycomb monolith photoreactor under artificial sunlight irradiation

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 singl...

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Main Authors:	Pham, Ngoc-Diep, Thao, Nguyen Hien, Luan, Van Hoang, Hoang, Hoang Anh, Sagadevan, Suresh, Ngo, Manh-Thang, Duong, Nhung Nguyen Hong, Le, Minh-Vien
Format:	Article
Published:	Springer 2023
Subjects:	QD Chemistry TP Chemical technology
Online Access:	http://eprints.um.edu.my/39456/
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spelling	my.um.eprints.394562024-11-24T04:55:42Z http://eprints.um.edu.my/39456/ Photocatalytic disinfection of E. coli using silver-doped TiO2 coated on cylindrical cordierite honeycomb monolith photoreactor under artificial sunlight irradiation Pham, Ngoc-Diep Thao, Nguyen Hien Luan, Van Hoang Hoang, Hoang Anh Sagadevan, Suresh Ngo, Manh-Thang Duong, Nhung Nguyen Hong Le, Minh-Vien QD Chemistry TP Chemical technology 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. Springer 2023-01 Article PeerReviewed 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 <https://doi.org/10.1007/s11244-022-01700-8>. 10.1007/s11244-022-01700-8
institution	Universiti Malaya
building	UM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Malaya
content_source	UM Research Repository
url_provider	http://eprints.um.edu.my/
topic	QD Chemistry TP Chemical technology
spellingShingle	QD Chemistry TP Chemical technology Pham, Ngoc-Diep Thao, Nguyen Hien Luan, Van Hoang Hoang, Hoang Anh Sagadevan, Suresh Ngo, Manh-Thang Duong, Nhung Nguyen Hong Le, Minh-Vien Photocatalytic disinfection of E. coli using silver-doped TiO2 coated on cylindrical cordierite honeycomb monolith photoreactor under artificial sunlight irradiation
description	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.
format	Article
author	Pham, Ngoc-Diep Thao, Nguyen Hien Luan, Van Hoang Hoang, Hoang Anh Sagadevan, Suresh Ngo, Manh-Thang Duong, Nhung Nguyen Hong Le, Minh-Vien
author_facet	Pham, Ngoc-Diep Thao, Nguyen Hien Luan, Van Hoang Hoang, Hoang Anh Sagadevan, Suresh Ngo, Manh-Thang Duong, Nhung Nguyen Hong Le, Minh-Vien
author_sort	Pham, Ngoc-Diep
title	Photocatalytic disinfection of E. coli using silver-doped TiO2 coated on cylindrical cordierite honeycomb monolith photoreactor under artificial sunlight irradiation
title_short	Photocatalytic disinfection of E. coli using silver-doped TiO2 coated on cylindrical cordierite honeycomb monolith photoreactor under artificial sunlight irradiation
title_full	Photocatalytic disinfection of E. coli using silver-doped TiO2 coated on cylindrical cordierite honeycomb monolith photoreactor under artificial sunlight irradiation
title_fullStr	Photocatalytic disinfection of E. coli using silver-doped TiO2 coated on cylindrical cordierite honeycomb monolith photoreactor under artificial sunlight irradiation
title_full_unstemmed	Photocatalytic disinfection of E. coli using silver-doped TiO2 coated on cylindrical cordierite honeycomb monolith photoreactor under artificial sunlight irradiation
title_sort	photocatalytic disinfection of e. coli using silver-doped tio2 coated on cylindrical cordierite honeycomb monolith photoreactor under artificial sunlight irradiation
publisher	Springer
publishDate	2023
url	http://eprints.um.edu.my/39456/
_version_	1817841944872615936
score	13.223943

Photocatalytic disinfection of E. coli using silver-doped TiO2 coated on cylindrical cordierite honeycomb monolith photoreactor under artificial sunlight irradiation

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