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Graphitic carbon nitride nanoribbon for enhanced visible-light photocatalytic H2 production

机译:石墨碳氮化物纳米强增强可见光光催化H2生产

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Chemical scissors provide a new vision to manufacture unique carbon nitride nanostructures with improved photocatalytic performance. Herein, graphitic carbon nitride nanoribbon (GCNR), with a typical length of 1.75 μm, width of 210 nm and thickness of 3 nm, was obtained by acid treatment of bulk g-C _(3) N _(4) with HNO _(3) /H _(2) SO _(4) mixtures. The C/N molar ratio of GCNR (around 0.629) was much smaller than that of pristine g-C _(3) N _(4) (0.758). It was demonstrated that larger amounts of carbon vacancies on the ultra-thin ribbon structures could contribute to improved electron–hole separation efficiency and excellent photocatalytic H _(2) production. The average H _(2) production rate of GCNR under visible light was 49.4 μmol h ~(?1) , which was 20 times that of the original catalyst.
机译:化学剪刀提供了一种新的视觉,用于制造具有改善的光催化性能的独特碳氮化纳米结构。这里,通过HNO _(3)的酸处理获得典型长度为1.75μm,宽度为1.75μm,宽度为1.75μm,厚度为3nm的宽度,厚度为3nm厚度为3nm〜3nm的厚度为3nm×(3)(3 )/ h _(2)所以_(4)混合。 GCNR(约0.629)的C / N摩尔比远小于原始G-C _(3)N _(4)(0.758)的C / N摩尔比。据证明,超薄色带结构上的较大量的碳空位可以有助于改善的电子 - 空穴分离效率和优异的光催化H _(2)产生。 GCNR在可见光下的平均值H _(2)的产量为49.4μmolH〜(α1),即原始催化剂的20倍。

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