ABSTRACT

Modern development in nanoscience and nanotechnology has contributed to the varied uses of metal and metal oxide nanoparticles in numerous arena of sciences, research organisations and industries. Among all metal oxides, copper oxide nanoparticles (CuO NPs) has reached more responsiveness as a result of its unique properties and applications. Herein, we report a one-step hydrothermal preparation of a photocatalytically stable copper oxide nanorods (g-CuO NRs) in the presence of Citrus sinensis L. peel extracts. The as prepared g-CuO NRs was used for photocatalytic activity in degradation of Rose Bengal (RB) under visible light irradiation. Upon 30 min of visible light irradiation, the g-CuO NRs photocatalyst exhibits an excellent photocatalytic activity (94.5%) for degradation RB. In addition, the g-CuO NRs were further tested for their antibacterial activity against gram-negative Escherichia coli, Klebsiella pneumoniae and gram-positive Staphylococcus aureus, Streptococcus pneumoniae bacteria and the test results showed improved antibacterial activity with the increase concentration of g-CuO NRs. The outcome of this work highlights the g-CuO NRs to be an interesting material for treatment of organic dyes and biomedical applications.

摘要

纳米科学和纳米技术的现代发展促成了金属和金属氧化物纳米粒子在众多科学领域、研究机构和工业领域的多种用途。在所有金属氧化物中，氧化铜纳米粒子（CuO NPs）由于其独特的性质和应用，已经达到了更高的响应性。在此，我们报道了在Citrus sinensis L存在下一步水热制备光催化稳定的氧化铜纳米棒 (g-CuO NRs). 果皮提取物。所制备的 g-CuO NRs 用于在可见光照射下降解玫瑰红 (RB) 的光催化活性。在可见光照射 30 分钟后，g-CuO NRs 光催化剂对降解 RB 表现出优异的光催化活性（94.5%）。此外，进一步测试了g-CuO NRs对革兰氏阴性大肠杆菌、肺炎克雷伯菌和革兰氏阳性金黄色葡萄球菌、肺炎链球菌的抗菌活性，测试结果表明，随着g-CuO浓度的增加，抗菌活性得到提高。 NR。这项工作的结果强调 g-CuO NRs 是一种有趣的材料，可用于处理有机染料和生物医学应用。