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首页> 外文期刊>RSC Advances >Construction of C60-decorated SWCNTs (C60-CNTs)/bismuth-based oxide ternary heterostructures with enhanced photocatalytic activity
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Construction of C60-decorated SWCNTs (C60-CNTs)/bismuth-based oxide ternary heterostructures with enhanced photocatalytic activity

机译：具有C 60 修饰的SWCNTs（C 60 -CNTs）/铋基氧化物三元异质结构的构建，具有增强的光催化活性

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摘要

Novel nanostructured carbon/BiVO4 and nanostructured carbon/Bi2MoO6 nanocomposite photocatalysts were fabricated via a facile hydrothermal process by using fullerene (C60)-decorated single-walled carbon nanotubes (SWCNTs) as the carbon source, which are denoted as C60-CNTs. The fabricated nanocomposites were characterized by various analytical techniques. The results showed that the C60-CNTs are intimately bound to the bismuth-based oxide surfaces. The UV-vis diffuse reflectance spectra of C60-CNTs/bismuth-based oxide nanocomposites exhibited increased visible-light absorption compared to pure bismuth-based oxides. Moreover, the ternary nanocomposites demonstrated significantly enhanced photocatalytic activity for the degradation of rhodamine B (Rh B) under visible light. The enhanced performance is attributed to the extended absorption in the visible-light region resulting from the incorporation of C60-CNTs, high specific surface area, and efficient separation of electron–hole pairs by the ternary composite system. In addition, the radical-trapping experiments revealed that the holes and O2˙? play major roles in the decolorization of Rh B under visible-light irradiation.
机译：新型纳米碳/ BiVO 4 和纳米碳/ Bi 2 MoO 6 60 ）修饰的单壁碳纳米管通过便捷的水热工艺制备 sub> 纳米复合光催化剂（SWCNT）作为碳源，表示为C 60 -CNT。通过各种分析技术对制备的纳米复合材料进行了表征。结果表明，C 60 -CNT与铋基氧化物表面紧密结合。与纯铋基氧化物相比，C 60 -CNTs /铋基氧化物纳米复合材料的紫外可见漫反射光谱显示出增加的可见光吸收。而且，三元纳米复合材料在可见光下对罗丹明B（Rh B）的降解具有显着增强的光催化活性。增强的性能归因于掺入C 60 -CNT，可见的高比表面积以及有效分离电子，从而在可见光区域扩展了吸收。孔对由三元复合系统组成。此外，自由基捕获实验表明，空穴和O 2 ˙ ？ 在Rh B在可见光下的脱色。

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