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Hu X, Xu X, Fu F, Yang B, Zhang J, Zhang Y, Binte Touhid SS, Liu L, Dong Y, Liu X, Yao J. Synthesis of bimetallic silver-gold nanoparticle composites using a cellulose dope: Tunable nanostructure and its biological activity. Carbohydr Polym 2020; 248:116777. [PMID: 32919567 DOI: 10.1016/j.carbpol.2020.116777] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 07/11/2020] [Accepted: 07/13/2020] [Indexed: 12/14/2022]
Abstract
Introducing functional metal nanoparticles (NPs) into flexible substrate is being increasingly attempted to expand their application. Here, we extend the synthesis of cellulose to its unmodified dope achieving freestanding nanocomposite decorated with bimetallic Ag-Au NPs through the one pot reaction. In the procedure, cellulose chain not only acts as a reducing agent but also a biocompatible support for NPs with a mean size of 7.9-9.7 nm. Meanwhile, changing the addition order of Ag+ and AuCl4- generated different atom arrangement in the bimetallic NPs. Moreover, the correlation of bioactivity to NP atom arrangement was studied. The result revealed that the nanocomposite containing NPs with an ultrathin Ag-rich outermost shell around an Au-rich core showed better bactericidal ability while lower cytotoxicity. In addition, the nanocomposite exhibited a sensitive SERS property for determination of R6G with a high enhancement factor of 108.
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Affiliation(s)
- Xinman Hu
- School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Xinyi Xu
- School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Feiya Fu
- School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018, China.
| | - Binbin Yang
- School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Jingjing Zhang
- Translational Medicine Research Center, Key Laboratory of Clinical Cancer Pharmacology and Toxicology Research of Zhejiang Province, Affiliated Hangzhou First People's Hospital, Zhejiang University School of Medicine, Hangzhou, 310006 China.
| | - Yanyan Zhang
- College of Textiles and Garments, Anhui Polytechnic University, Wuhu, 241000, China
| | - S Salvia Binte Touhid
- School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Lin Liu
- School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Yubing Dong
- School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018, China
| | - Xiangdong Liu
- School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018, China.
| | - Juming Yao
- School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018, China
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