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Photocatalytic and antimicrobial properties of microwave synthesized mixed metal oxide nanocomposite
Inorganic Chemistry Communications ( IF 3.8 ) Pub Date : 2020-12-29 , DOI: 10.1016/j.inoche.2020.108429
Karthik Kannan , D. Radhika , D. Gnanasangeetha , Sivarama Krishna Lakkaboyana , Kishor Kumar Sadasivuni , K. Gurushankar , Marlia M. Hanafiah

CdO-CuO-ZnO nanocomposite (CCZ NC) was prepared by a simplistic microwave-assisted route and inspected by utilizing diverse spectroscopic ways. The structural and morphological properties of CCZ NC were investigated via XRD, FTIR, and SEM with EDAX analysis. The XRD pattern reveals the crystal structure of cubic CdO, monoclinic CuO, and hexagonal ZnO with average crystallite size around 39 (CdO), 28 (CuO), 30 (ZnO) nm. The FTIR spectrum exposed distinctive vibration frequencies at 566, 630, and 451 cm−1 allocated to Cu-O, Cd-O, and Zn-O stretching vibrations, correspondingly. The flower-like structure was validated with SEM with EDAX investigation. The optical properties of CCZ NC were deliberated via UV–Visible and fluorescence spectroscopy. The optical bandgap of the synthesized CCZ NC is 2.8 eV. High-performance alizarin red S dye photocatalytic degradation (93% at 120 mins) was observed on the flower-like structure CCZ NC, under natural sunlight irradiation. Besides, the antibacterial activities of CCZ NC were investigated against foodborne microorganisms. CCZ NC showed a good zone of inhibition against Staphylococcus aureus (28 mm) and Salmonella typhi (22 mm). These results indicate that synergistic CCZ NC is a promising material for the functioning of bio-imaging, water purifying process, and pharmaceutical applications.



中文翻译:

微波合成金属氧化物纳米复合材料的光催化和抗菌性能

采用简单的微波辅助法制备了CdO-CuO-ZnO纳米复合材料(CCZ NC),并采用多种分光光度法对其进行了检测。通过XRD,FTIR和SEM以及EDAX分析研究CCZ NC的结构和形态学特性。XRD图谱显示了立方CdO,单斜晶CuO和六角形ZnO的晶体结构,其平均微晶尺寸约为39(CdO),28(CuO),30(ZnO)nm。FTIR光谱显示了在566、630和451 cm -1处的独特振动频率分别分配给Cu-O,Cd-O和Zn-O拉伸振动。通过EDAX研究,用SEM验证了花状结构。CCZ NC的光学特性是通过UV-Visible和荧光光谱法研究的。合成的CCZ NC的光学带隙为2.8 eV。在自然阳光照射下,在花状结构CCZ NC上观察到高性能茜素红S染料的光催化降解(在120分钟时93%)。此外,还研究了CCZ NC对食源性微生物的抗菌活性。CCZ NC显示出对金黄色葡萄球菌(28 mm)和伤寒沙门氏菌的良好抑制区域(22毫米)。这些结果表明,协同CCZ NC是用于生物成像,水净化过程和制药应用的有前途的材料。

更新日期:2021-01-07
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