Rauvolfia serpentina-Mediated Green Synthesis of CuO Nanoparticles and Its Multidisciplinary Studies
来源期刊：Acta Metallurgica Sinica2015年第9期
论文作者：K.Lingaraju H.Raja Naika K.Manjunath D.Suresh H.Nagabhushana
文章页码：1134 - 1140
摘 要：Copper oxide nanoparticles（Cu O Nps） were successfully synthesized by solution combustion method using aqueous leaf extract of Rauvolfia serpentina as a fuel. The structure and morphology of the Cu O nanoparticles（Nps） were characterized by powder X-ray diffraction（PXRD）, UV–visible spectroscopy（UV–visible）, scanning electron microscopy（SEM）, transmission electron microscopy（TEM）, etc. The PXRD patterns reveal the formation of monoclinic phase with crystallite structure. SEM images indicate that the particles have sponge-like structure being highly porous and agglomerated with large surface area. The average crystallite sizes were found to be in the range of 10–20 nm by Scherrer’s method. The Cu O Nps size was further confirmed by TEM. Further, Cu O Nps exhibit good photocatalytic activity for the photodegradation of trypan blue dye, indicating that it acts as a promising semiconducting material. The antibacterial properties of Cu O nanoparticles were investigated against pathogenic bacterial strains, namely Gram-ve Escherichia coli（NCIM-5051） and Pseudomonas desmolyticum（NCIM-2028） and Gram ?ve bacteria Staphylococcus aureus（NCIM-5022） using the agar well diffusion method.
K.Lingaraju1，H.Raja Naika1，K.Manjunath2，D.Suresh4，H.Nagabhushana5
1. Department of Studies and Research in Environmental Science, Tumkur University2. Centre for Nano and Material Sciences, Jain University4. Department of Studies and Research in Chemistry, Tumkur University5. Prof. C.N.R. Rao Center for Advanced Materials, Tumkur University
摘 要：Copper oxide nanoparticles（Cu O Nps） were successfully synthesized by solution combustion method using aqueous leaf extract of Rauvolfia serpentina as a fuel. The structure and morphology of the Cu O nanoparticles（Nps） were characterized by powder X-ray diffraction（PXRD）, UV–visible spectroscopy（UV–visible）, scanning electron microscopy（SEM）, transmission electron microscopy（TEM）, etc. The PXRD patterns reveal the formation of monoclinic phase with crystallite structure. SEM images indicate that the particles have sponge-like structure being highly porous and agglomerated with large surface area. The average crystallite sizes were found to be in the range of 10–20 nm by Scherrer’s method. The Cu O Nps size was further confirmed by TEM. Further, Cu O Nps exhibit good photocatalytic activity for the photodegradation of trypan blue dye, indicating that it acts as a promising semiconducting material. The antibacterial properties of Cu O nanoparticles were investigated against pathogenic bacterial strains, namely Gram-ve Escherichia coli（NCIM-5051） and Pseudomonas desmolyticum（NCIM-2028） and Gram ?ve bacteria Staphylococcus aureus（NCIM-5022） using the agar well diffusion method.
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