期刊
JOURNAL OF SAUDI CHEMICAL SOCIETY
卷 19, 期 6, 页码 682-688出版社
ELSEVIER
DOI: 10.1016/j.jscs.2014.07.001
关键词
Antimicrobial activity; FTIR; Silver nanoparticles; TEM; UV-vis spectroscopy; XRD
资金
- University Grant Commission, New Delhi
The biofabricated silver nanoparticles are extensively used in environmental, biotechnological and biomedical applications. The synthesis of SNPs has been carried out by using the filtrate extract of novel fungal strain Penicillium atramentosum KM. To undertake this study, P. atramentosum KM extract was exposed to silver nitrate and the obtained SNPs were thoroughly analyzed using physicochemical characterization tools such as UV-visible spectroscopy (UV-vis), Fourier transformation infrared (FTIR), X-ray diffraction (XRD) and transmission electron microscopy (TEM). As evident from the FTIR spectra plausibly the protein components of fungal extract caused the reduction of silver nitrate. The SNPs showed a characteristic UV-visible peak at 420 nm with an average size of 5-25 nm. The XRD record exhibited the characteristic peaks of 111, 200, 220 and 311 nanoparticles signifying that these nanoparticles were crystalline in nature. Parametric optimization showed maximum absorbance of 420 nm at pH 7, 25 degrees C with 3 mM silver nitrate, concentration ratio of fungal extract and silver nitrate was 5: 5 in 72 h. The synthesized SNPs showed antimicrobial activity against bacterial strains. (C) 2014 Production and hosting by Elsevier B.V. on behalf of King Saud University.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据