Microwave-Hydrothermal Rapid Synthesis of Cellulose/Ag Nanocomposites and Their Antibacterial Activity
Silver-based antimicrobial nanomaterials are considered as the most promising antibacterial agents owing to their outstanding antimicrobial efficacy and their relatively low toxicity to human beings. In this work, we report on a facile and environment-friendly microwave-hydrothermal method to prepar...
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MDPI AG
2018-11-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/8/12/978 |
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| author | Lian-Hua Fu Qing-Long Gao Chao Qi Ming-Guo Ma Jun-Feng Li |
| author_facet | Lian-Hua Fu Qing-Long Gao Chao Qi Ming-Guo Ma Jun-Feng Li |
| author_sort | Lian-Hua Fu |
| collection | DOAJ |
| description | Silver-based antimicrobial nanomaterials are considered as the most promising antibacterial agents owing to their outstanding antimicrobial efficacy and their relatively low toxicity to human beings. In this work, we report on a facile and environment-friendly microwave-hydrothermal method to prepare cellulose/Ag nanocomposites using hemicellulose as the reductant. The influences of the microwave-hydrothermal heating time and temperature, as well as the hemicellulose concentration on the formation of cellulose nanocomposites, were investigated in detail. Experimental results indicated that the hemicellulose was an effective reductant for silver ions, with higher temperature and longer heating time favoring the formation of silver with higher crystallinity and mass content in the nanocomposites. Moreover, the antimicrobial properties of the as-prepared cellulose/Ag nanocomposites were explored using Gram-positive <i>S. aureus</i> ATCC 6538 and Gram-negative <i>E. coli</i> HB 101 by both disc diffusion method and agar dilution method, and the nanocomposites showed excellent antibacterial activity. These results demonstrate that the as-prepared cellulose/Ag nanocomposites, as a kind of antibacterial material, are promising for applications in a wide range of biomedical fields. |
| first_indexed | 2024-12-19T22:04:40Z |
| format | Article |
| id | doaj.art-430d8738f5cc48868de331b752f79e18 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-12-19T22:04:40Z |
| publishDate | 2018-11-01 |
| publisher | MDPI AG |
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| series | Nanomaterials |
| spelling | doaj.art-430d8738f5cc48868de331b752f79e182022-12-21T20:04:04ZengMDPI AGNanomaterials2079-49912018-11-0181297810.3390/nano8120978nano8120978Microwave-Hydrothermal Rapid Synthesis of Cellulose/Ag Nanocomposites and Their Antibacterial ActivityLian-Hua Fu0Qing-Long Gao1Chao Qi2Ming-Guo Ma3Jun-Feng Li4Beijing Key Laboratory of Lignocellulosic Chemistry, College of Materials Science and Technology, Beijing Forestry University, Beijing 100083, ChinaCollege of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing 100083, ChinaGuangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen 518060, ChinaBeijing Key Laboratory of Lignocellulosic Chemistry, College of Materials Science and Technology, Beijing Forestry University, Beijing 100083, ChinaCollege of Water Conservancy and Architectural Engineering, Shihezi University, Shihezi 832000, ChinaSilver-based antimicrobial nanomaterials are considered as the most promising antibacterial agents owing to their outstanding antimicrobial efficacy and their relatively low toxicity to human beings. In this work, we report on a facile and environment-friendly microwave-hydrothermal method to prepare cellulose/Ag nanocomposites using hemicellulose as the reductant. The influences of the microwave-hydrothermal heating time and temperature, as well as the hemicellulose concentration on the formation of cellulose nanocomposites, were investigated in detail. Experimental results indicated that the hemicellulose was an effective reductant for silver ions, with higher temperature and longer heating time favoring the formation of silver with higher crystallinity and mass content in the nanocomposites. Moreover, the antimicrobial properties of the as-prepared cellulose/Ag nanocomposites were explored using Gram-positive <i>S. aureus</i> ATCC 6538 and Gram-negative <i>E. coli</i> HB 101 by both disc diffusion method and agar dilution method, and the nanocomposites showed excellent antibacterial activity. These results demonstrate that the as-prepared cellulose/Ag nanocomposites, as a kind of antibacterial material, are promising for applications in a wide range of biomedical fields.https://www.mdpi.com/2079-4991/8/12/978cellulosesilvernanocompositesmicrowave-hydrothermalantibacterial activity |
| spellingShingle | Lian-Hua Fu Qing-Long Gao Chao Qi Ming-Guo Ma Jun-Feng Li Microwave-Hydrothermal Rapid Synthesis of Cellulose/Ag Nanocomposites and Their Antibacterial Activity Nanomaterials cellulose silver nanocomposites microwave-hydrothermal antibacterial activity |
| title | Microwave-Hydrothermal Rapid Synthesis of Cellulose/Ag Nanocomposites and Their Antibacterial Activity |
| title_full | Microwave-Hydrothermal Rapid Synthesis of Cellulose/Ag Nanocomposites and Their Antibacterial Activity |
| title_fullStr | Microwave-Hydrothermal Rapid Synthesis of Cellulose/Ag Nanocomposites and Their Antibacterial Activity |
| title_full_unstemmed | Microwave-Hydrothermal Rapid Synthesis of Cellulose/Ag Nanocomposites and Their Antibacterial Activity |
| title_short | Microwave-Hydrothermal Rapid Synthesis of Cellulose/Ag Nanocomposites and Their Antibacterial Activity |
| title_sort | microwave hydrothermal rapid synthesis of cellulose ag nanocomposites and their antibacterial activity |
| topic | cellulose silver nanocomposites microwave-hydrothermal antibacterial activity |
| url | https://www.mdpi.com/2079-4991/8/12/978 |
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