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首页> 美国卫生研究院文献>Heliyon >Optimization of green biosynthesized visible light active CuO/ZnO nano-photocatalysts for the degradation of organic methylene blue dye
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Optimization of green biosynthesized visible light active CuO/ZnO nano-photocatalysts for the degradation of organic methylene blue dye

机译：绿色生物合成可见光活性CuO / ZnO纳米光催化剂的优化用于有机亚甲基蓝染料的降解

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Herein, CuO/ZnO nanocomposites at different ratios were successfully synthesized through a green biosynthesis approach. This was performed by harnessing the fungal-secreted enzymes and proteins during the sol-gel process for nanocomposites seed growth. All fabricated nanoparticlesanocomposites were characterized using Fourier Transform Infra-Red (FT-IR) Spectroscopy, X-Ray Diffraction (XRD), Transmission Electron Microscopy (TEM), Scanning Electron Microscopy (SEM-EDX) and X-ray Photoelectron Spectroscopy (XPS) analyses. The photocatalytic degradation efficacy of the synthesized nanocomposites was evaluated using a cationic methylene blue (MB) dye as a model of reaction. Results obtained from the FT-IR and EDX analyses revealed that CuO-NPs, ZnO-NPs, CuO/ZnO50/50, CuO/ZnO80/20, and CuO/ZnO20/80 were successfully prepared by harnessing the biomass filtrate of Penicillium corylophilum As-1. Furthermore, XRD and TEM revealed the variation in the particle size of the nanocomposites (10–55 nm) with the ratio of the nanoparticles. Notably, the size of the nanocomposites was proportionally increased with an increasing ratio of ZnO-NPs. XPS analysis affirmed the presence of both Cu and Zn in the nanocomposites with varying binding energies compared with individual nanoparticles. Furthermore, a high photo-degradation efficacy was achieved by increasing the ratio of ZnO-NPs in the nanocomposite formulation, and 97% of organic MB dye was removed after 85 min of irradiation using the CuO/ZnO20/80 nanocomposite.
机译：这里，通过绿色生物合成方法成功地合成不同比例的CuO / ZnO纳米复合材料。这是通过利用在溶胶 - 凝胶过程中用于纳米复合材料种子生长的溶胶 - 凝胶法的真菌分泌的酶和蛋白质进行。所有制造的纳米颗粒/纳米复合材料都是使用傅里叶变换红外（FT-IR）光谱，X射线衍射（XRD），透射电子显微镜（TEM），扫描电子显微镜（SEM-EDX）和X射线光电子谱（ XPS）分析。使用阳离子亚甲基蓝（MB）染料作为反应模型评价合成纳米复合材料的光催化降解效果。从FT-IR和EDX分析中获得的结果显示CuO-NPS，ZnO-NPS，CuO / ZnO 50/50，CuO / ZnO80 / 20和CuO / ZnO20和CuO / ZnO20 / 80通过利用青霉植物植物的生物质滤液而成功制备-1。此外，XRD和TEM显示纳米复合材料的粒度（10-55nm）的变化，纳米颗粒的比例。值得注意的是，纳米复合材料的尺寸与ZnO-NP的比例升高成比例地增加。 XPS分析肯定了与个体纳米颗粒相比具有不同结合能的纳米复合材料中Cu和Zn的存在。此外，通过增加纳米复合制剂中的ZnO-NP的比率来实现高光降解功效，使用CuO / ZnO20 / 80纳米复合材料85分钟照射后除去97％的有机MB染料。

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