Silver nanoparticle loaded TiO2 nanotubes with high photocatalytic and antibacterial activity synthesized by photoreduction method

被引：89

作者：

Pham Van Viet ^{[1
]}

Bach Thang Phan ^{[1
]}

Mott, Derrick ^{[2
]}

Maenosono, Shinya ^{[2
]}

Truong Tan Sang ^{[3
]}

Cao Minh Thi ^{[3
]}

Le Van Hieu ^{[1
]}

机构：

[1] VNU HCMC, Univ Sci, Fac Mat Sci & Technol, Nanomat Environm Applicat Lab, 227 Nguyen Van Cu St,Dist 5, Ho Chi Minh City 700000, Vietnam

[2] Japan Adv Inst Sci & Technol, Sch Mat Sci, 1-1 Asahidai, Nomi, Ishikawa 9231292, Japan

[3] Ho Chi Minh City Univ Technol HUTECH, CM Thi Lab, 475A Dien Bien Phu St, Ho Chi Minh City 700000, Vietnam

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2018年 / 352卷

关键词：

Silver nanoparticles; TiO2; nanotubes; Photoreduction; Photocatalyst; Sunlight; MESOPOROUS TIO2; THIN-FILMS; DEGRADATION; AG; FABRICATION; MECHANISM; ANATASE; WATER; PHOTOELECTRODES; PERFORMANCE;

D O I：

10.1016/j.jphotochem.2017.10.051

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Silver nanoparticles (Ag NPs) were loaded on TiO2 nanotubes (TNTs) via photoreduction method at room temperature without any additional reducing agent. The morphology and crystal structure were examined by transmission electron microscopy, X-ray diffraction pattern, and Raman spectroscopy. Chemical states of silver, titanium, and oxygen were analyzed by X-ray photoelectron spectroscopy. The results showed that Ag NPs with an average diameter of 5 nm were uniformly distributed on TNTs surface. Ag NPs improved both photocatalytic and the antibacterial activity of TNTs under sunlight irradiation. Ag/TNTs decomposed 81.2% of methylene blue and 75.8% of methylene orange after 150 min under sunlight irradiation. In addition, Ag/TNTs at 20 ppm concentration eliminated 99.99% of Staphylococcus aureus after 60 min under sunlight irradiation. This research demonstrated that Ag/TNTs can be synthesized at industrial scale by the photoreduction method and are effective antibacterial materials. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：106 / 112

页数：7

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