Hollow Dodecahedra Graphene Oxide- Cuprous Oxide Nanocomposites With Effective Photocatalytic and Bactericidal Activity.
Hollow Dodecahedra Graphene Oxide- Cuprous Oxide Nanocomposites With Effective Photocatalytic and Bactericidal Activity.
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具有有效光催化和杀菌活性的空心十二面体氧化石墨烯-氧化亚铜纳米复合材料
DOI：
10.3389/fchem.2021.755836
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发表时间：
2021
影响因子：
5.5
通讯作者：
Qin J
中科院分区：
文献类型：
--
作者：
Shan Z;Yang Y;Shi H;Zhu J;Tan X;Luan Y;Jiang Z;Wang P;Qin J
在本研究中，制备了一种不同形貌的氧化石墨烯-氧化亚铜(GO-Cu2O)纳米复合材料，作为可见光下降解有机/无机染料的光催化材料，以及对病原菌的杀菌效果。采用原位合成法制备了具有实心立方和中空十二面体结构的GO-Cu2O，并用扫描电子显微镜、透射电子显微镜、X射线衍射仪、拉曼光谱、紫外-可见光谱和傅里叶变换红外光谱对其进行了表征。与立方体GO-Cu2O相比，GO-Cu2O十二面体(GCD)在甲基橙(MO)、罗丹明B(RhB)和苯酚中的吸附和降解效率更高，这是因为GO-Cu2O中空结构同时具有更多的活性中心和光吸收。采用平板菌落计数法检测了GO-Cu2O十二面体的抑菌效果，结果表明，GO-Cu2O十二面体对致病菌具有良好的杀菌效果。探讨了制备具有增强可见光催化和抗菌性能的GCD的可能机理。
In this study, a kind of graphene oxide-cuprous oxide (GO-Cu2O) nanocomposites was fabricated with different morphologies to serve as a photocatalytic material for the degradation of organic/inorganic dyes under visible light and the bactericidal effect against pathogenic bacteria. The GO-Cu2O was prepared with solid cube and hollow dodecahedra morphologies through in-situ synthesis, and characterized by scanning electron microscopy (SEM), transmission electron microscope (TEM), X-ray diffraction (XRD), Raman, Ultraviolet and visible spectrophotometry (UV/vis), and Fourier transform infrared spectroscopy. In comparison with cubic GO-Cu2O, the absorption and degradation efficiency of the GO-Cu2O dodecahedra (GCD) composite in Methyl orange (MO), Rhodamine B (RhB), and phenol was higher owning to the more active sites for the simultaneous dye and light absorption of hollow structure. The antibacterial effect of the GO-Cu2O dodecahedra was examined by the flat colony counting method with an excellent bactericidal effect against pathogenic bacteria. The possible mechanism for the preparation of GCD possessing the enhancement of the visible-light photocatalytic and antibacterial efficiencies were also investigated.
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