Ag@AgCl nanoparticles in-situ deposited cellulose acetate/silk fibroin composite film for photocatalytic and antibacteri
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ORIGINAL RESEARCH
Ag@AgCl nanoparticles in-situ deposited cellulose acetate/ silk fibroin composite film for photocatalytic and antibacterial applications Xiaohong Wang . Yuguang Sui . Jian Jian . Zhengqiu Yuan . Jianxian Zeng . Lei Zhang . Taofen Wang . Hu Zhou
Received: 19 February 2020 / Accepted: 25 June 2020 Springer Nature B.V. 2020
Abstract In this paper, non-solvent-induced phase separation and in situ deposition are applied to prepare a multifunctional Ag@AgCl-cellulose acetate/silk fibroin (Ag@AgCl-CA/SF) composite film. The CA/ SF film is employed as an eco-friendly substrate that provides sites for Ag@AgCl nanoparticle (NP) in situ deposition. The films are characterized using various analytical methods. The photocatalytic activity of the films is evaluated via the decomposition of methyl
orange (MO) under visible light. The results indicate that the Ag@AgCl-CA/SF film exhibits higher photocatalytic activity than the Ag-CA/SF film and that the reaction rate constant of MO decomposition photocatalyzed by Ag@AgCl-CA/SF is approximately 10.3 times that of Ag-CA/SF. Meanwhile, a possible photocatalytic mechanism over the Ag@AgCA/SF film is presented based on theoretical analysis and active species trapping experiments. Furthermore, films with silver atom and silver ion deposition exhibit good antibacterial activity against E. coli and S. aureus. This research may provide new insight into the construction of a multifunctional film reactor for organic pollutant degradation and bacterial inactivation.
Electronic supplementary material The online version of this article (https://doi.org/10.1007/s10570-020-03321-4) contains supplementary material, which is available to authorized users. X. Wang Y. Sui J. Jian Z. Yuan J. Zeng L. Zhang T. Wang H. Zhou (&) Key Laboratory of Theoretical Organic Chemistry and Functional Molecules, Ministry of Education, Functional film materials Engineering Research Center of Hunan Province, Hunan Provincial Key Laboratory of Advanced Materials for New Energy Storage and Conversion, School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China e-mail: [email protected]
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Keywords Cellulose acetate Silk fibroin Ag@AgCl NPs Photocatalytic Antibacterial activities
Introduction Recently, some studies found that nanoscale noble metal particles with nanometer size effects exhibit outstanding performance in various fields, such as catalysts, photoelectric devices, biomedicine and sensors (Di Paola et al. 2016; Wu et al. 2019; Yao et al. 2017; Zahedifar et al. 2019). Silver nanoparticles (Ag NPs) are nanoscale noble metal particles that have attracted significant attention because of their excellent electric, magnetic, optical and catalytic performance with broad-spectrum antibacterial activity and strong surface plasmon resonance (SPR) (Wang et al. 2020). Moreover, we found that some composite plasmonic photocatalysts containin
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