Highly dispersed Ag/TiO2 via adsorptive self-assembly for bactericidal application

Chongjiang Cao; Jingcheng Huang; Li Li; Chanjuan Zhao; Jianfeng Yao

doi:10.1039/C7RA00758B

Highly dispersed Ag/TiO₂via adsorptive self-assembly for bactericidal application

Chongjiang Cao,

*^a Jingcheng Huang,^b Li Li,^a Chanjuan Zhao^a and Jianfeng Yao

Author affiliations

* Corresponding authors

^a National Engineering Laboratory for Food Storage and Transportation, College of Food Science and Engineering/Collaborative Innovation Center for Modern Grain Circulation and Safety, Nanjing University of Finance & Economics, Nanjing 210023, China
E-mail: ccj33@163.com
Fax: +86 13770625999
Tel: +86 13770625999

^b Department of Chemistry, Tufts University, Medford, MA 02155, USA

^c College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China

Abstract

The strong electrostatic adsorption (SEA) technique was used for the preparation of Ag/TiO₂ by driving the Ag precursor onto the TiO₂ surface. The prepared material was characterized using nitrogen adsorption–desorption techniques, X-ray diffraction, scanning transmission electron microscopy, X-ray photoelectron spectroscopy and inductively-coupled plasma. The results demonstrated that the SEA method could effectively prevent Ag itself from aggregating, and Ag nanoparticles (<2 nm) were formed on the TiO₂ surface with a uniform distribution. To prove the feasibility of the effective SEA method, the bactericidal performance of Ag/TiO₂ particles for antibacterial packaging was evaluated and the results indicated that the highly dispersed Ag on TiO₂ exhibited excellent antimicrobial properties since the particle size and dispersion of Ag nanoparticles have a strong relationship with the inhibition of bacterial growth.

Article information

https://doi.org/10.1039/C7RA00758B

Article type

Paper

Submitted

18 Jan 2017

Accepted

19 Feb 2017

First published

27 Feb 2017

This article is Open Access

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RSC Adv., 2017,7, 13347-13352

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Highly dispersed Ag/TiO₂ via adsorptive self-assembly for bactericidal application

C. Cao, J. Huang, L. Li, C. Zhao and J. Yao, RSC Adv., 2017, 7, 13347 DOI: 10.1039/C7RA00758B

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