INVESTIGATION OF THE EFFECT OF ANNEALING TEMPERATURE ON STRUCTURAL, OPTICAL AND ANTIBACTERIAL PROPERTIES OF COPPER OXIDE NANOPARTICLES PREPARED BY FACILE CO-PRECIPITATION ROUTE

IF 0.9 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY
H. Anwar, S. M. B. Naqvi, B. Abbas, M. Shahid, M. Iqbal, M. Shaharyar, A. Islam, F. Batool, M. Khalid, A. Jamil
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引用次数: 2

Abstract

Copper oxide (CuO) nanoparticles are important due to their excellent properties and applications such as nano electronics, gas sensors, solar cell and super conductors. Copper oxide have been successfully prepared by using co-precipitation method. CuCl2. 2H2O and NaOH are used in the synthesis of copper oxide nanoparticles as a precursers. Samples annealed at different temperatures such as 400 ºC, 500 ºC, 600 ºC and 700 ºC. The as prepared samples were investigated X-ray diffraction (XRD), scanning electron microscopy (SEM), UV-vis spectroscopy. Their using Antibacterial activity against the two bacterial strain Gram-positive and Gram negative such as (E. coli and B. subtilis) and Hemolysis. Was also investigated XRD analysis showed structure of copper oxide nanoparticles was monoclinic and average crystallite size was found to increase with an increase in annealing temperature in the range of 35 nm to 45 nm. Morphology of SEM images showed that CuO nanostructures were rod like at lower temperature but in higher temperature sphere- like shape was observed. UV-visible spectroscopy results revealed the variation of band gap energy with increasing annealing temperature. Samples prepared at higher temperatures exhibited high antibacterial activity for E. coli and B. subtilis and low toxicity. Low homolytic is safer to use in different applications.
研究了退火温度对易共沉淀法制备的氧化铜纳米颗粒结构、光学和抗菌性能的影响
氧化铜纳米颗粒因其优异的性能和在纳米电子学、气体传感器、太阳能电池和超导体等领域的应用而具有重要意义。采用共沉淀法成功制备了氧化铜。CuCl2。以2H2O和NaOH为前驱体合成氧化铜纳米颗粒。样品在400ºC、500ºC、600ºC、700ºC等不同温度下退火。对制备的样品进行了x射线衍射(XRD)、扫描电镜(SEM)、紫外可见光谱(UV-vis)等表征。它们对革兰氏阳性和革兰氏阴性菌株(大肠杆菌和枯草芽孢杆菌)和溶血具有抑菌活性。XRD分析表明,在35 ~ 45 nm范围内,随着退火温度的升高,氧化铜纳米颗粒呈单斜晶型结构,晶粒尺寸随退火温度的升高而增大。扫描电镜形貌分析表明,低温时CuO纳米结构呈棒状,高温时呈球状。紫外可见光谱结果揭示了带隙能随退火温度的升高而变化。高温下制备的样品对大肠杆菌和枯草芽孢杆菌的抑菌活性高,毒性低。低均溶性在不同的应用中使用更安全。
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来源期刊
Journal of Optoelectronic and Biomedical Materials
Journal of Optoelectronic and Biomedical Materials MATERIALS SCIENCE, MULTIDISCIPLINARY-
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