Antibacterial Properties of Novel Bacterial Cellulose Nanofiber Containing Silver Nanoparticles
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 betwee...
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| Published in | Chinese journal of chemical engineering Vol. 21; no. 12; pp. 1419 - 1424 |
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| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
Elsevier B.V
01.12.2013
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1004-9541 2210-321X |
| DOI | 10.1016/S1004-9541(13)60636-9 |
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| Summary: | 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. |
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| Bibliography: | 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. YANG Jiazhi;LIU Xiaoli;HUANG Liyong;SUN Dongping（1 Key Laboratory for Soft Chemistry and Functional Materials of Ministry Education, Nanjing University of Sci- ence 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.） 11-3270/TQ bacterial cellulose; nanofiber; antimicrobial agents; silver ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
| ISSN: | 1004-9541 2210-321X |
| DOI: | 10.1016/S1004-9541(13)60636-9 |