Antibacterial Properties of Novel Bacterial Cellulose Nanofiber Containing Silver Nanoparticles

doi:10.1016/S1004-9541(13)60636-9

Chinese Journal of Chemical Engineering ›› 2013, Vol. 21 ›› Issue (12): 1419-1424.DOI: 10.1016/S1004-9541(13)60636-9

Antibacterial Properties of Novel Bacterial Cellulose Nanofiber Containing Silver Nanoparticles

杨加志¹, 刘晓丽², 黄立勇³, 孙东平¹

1 Key Laboratory for Soft Chemistry and Functional Materials of Ministry Education, Nanjing University of Science and Technology, Nanjing 210094, China;
2 State Key Laboratory of Bioelectronics, School of Biological and Medical Engineering, Southeast University, Nanjing 210096, China;
3 Taixing Yulang Chemical Co., Ltd.

收稿日期:2013-05-16 修回日期:2013-10-11 出版日期:2013-12-28 发布日期:2013-12-27
通讯作者: SUN Dongping
基金资助:
Supported by the National Natural Science Foundation of China (21206076), the Natural Science Foundation of Jiangsu Province (BK2012401 and BK2011715) and National High Technology Research and Development Program of China (2011AA050701).

Antibacterial Properties of Novel Bacterial Cellulose Nanofiber Containing Silver Nanoparticles

YANG Jiazhi¹, LIU Xiaoli², HUANG Liyong³, SUN Dongping¹

1 Key Laboratory for Soft Chemistry and Functional Materials of Ministry Education, Nanjing University of Science and Technology, Nanjing 210094, China;
2 State Key Laboratory of Bioelectronics, School of Biological and Medical Engineering, Southeast University, Nanjing 210096, China;
3 Taixing Yulang Chemical Co., Ltd.

Received:2013-05-16 Revised:2013-10-11 Online:2013-12-28 Published:2013-12-27
Contact: SUN Dongping
Supported by:
Supported by the National Natural Science Foundation of China (21206076), the Natural Science Foundation of Jiangsu Province (BK2012401 and BK2011715) and National High Technology Research and Development Program of China (2011AA050701).

摘要/Abstract

摘要： In this work, we describe a novel facile method to prepare long one-dimensional hybrid nanofibers by using hydrated bacterial cellulose nanofibers (BCF) as a template. Silver (Ag) nanoparticles with an average diameter of 1.5 nm were well dispersed on BCF via a simple in situ chemical-reduction between AgNO₃ and NaBH₄ at a relatively low temperature. A growth mechanism is proposed that Ag nanoparticles are uniformly anchored onto BCF by coordination with BC-containing hydroxyl groups. The bare BCF and as-prepared Ag/BCF hybrid nanofibers were characterized by several techniques including transmission electron microscopy, X-ray diffraction, thermogravimetric analyses, and ultraviolet-visible (UV-Vis) absorption spectra. The antibacterial properties of Ag/BCF hybrid nanofibers against Escherichia coli (E. coli, Gram-negative) and Staphylococcu saureus (S. saureus, Gram-positive) bacteria were evaluated by using modified Kirby Bauer method and colony forming count method. The results show that Ag nanoparticles are well dispersed on BCF surface via in situ chemical-reduction. The Ag/BCF hybrid nanofiber presents strong antibacterial property and thus offers its candidature for use as functional antimicrobial agents.

关键词: bacterial cellulose, nanofiber, antimicrobial agents, silver

Abstract: In this work, we describe a novel facile method to prepare long one-dimensional hybrid nanofibers by using hydrated bacterial cellulose nanofibers (BCF) as a template. Silver (Ag) nanoparticles with an average diameter of 1.5 nm were well dispersed on BCF via a simple in situ chemical-reduction between AgNO₃ and NaBH₄ at a relatively low temperature. A growth mechanism is proposed that Ag nanoparticles are uniformly anchored onto BCF by coordination with BC-containing hydroxyl groups. The bare BCF and as-prepared Ag/BCF hybrid nanofibers were characterized by several techniques including transmission electron microscopy, X-ray diffraction, thermogravimetric analyses, and ultraviolet-visible (UV-Vis) absorption spectra. The antibacterial properties of Ag/BCF hybrid nanofibers against Escherichia coli (E. coli, Gram-negative) and Staphylococcu saureus (S. saureus, Gram-positive) bacteria were evaluated by using modified Kirby Bauer method and colony forming count method. The results show that Ag nanoparticles are well dispersed on BCF surface via in situ chemical-reduction. The Ag/BCF hybrid nanofiber presents strong antibacterial property and thus offers its candidature for use as functional antimicrobial agents.

Key words: bacterial cellulose, nanofiber, antimicrobial agents, silver

杨加志, 刘晓丽, 黄立勇, 孙东平. Antibacterial Properties of Novel Bacterial Cellulose Nanofiber Containing Silver Nanoparticles[J]. Chinese Journal of Chemical Engineering, 2013, 21(12): 1419-1424.

YANG Jiazhi, LIU Xiaoli, HUANG Liyong, SUN Dongping. Antibacterial Properties of Novel Bacterial Cellulose Nanofiber Containing Silver Nanoparticles[J]. Chin.J.Chem.Eng., 2013, 21(12): 1419-1424.

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Antibacterial Properties of Novel Bacterial Cellulose Nanofiber Containing Silver Nanoparticles

Antibacterial Properties of Novel Bacterial Cellulose Nanofiber Containing Silver Nanoparticles

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