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首页> 外文期刊>RSC Advances >Construction of a well-dispersed Ag/graphene-like g-C3N4 photocatalyst and enhanced visible light photocatalytic activity
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Construction of a well-dispersed Ag/graphene-like g-C3N4 photocatalyst and enhanced visible light photocatalytic activity

机译：分散良好的Ag /石墨烯状g-C 3 N 4 光催化剂的构建及增强的可见光光催化活性

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摘要

In order to overcome the intrinsic drawback of pristine g-C3N4, we demonstrate a simple thermal oxidation exfoliation-photodeposition technique to fabricate a Ag/graphene-like g-C3N4 (Ag/G-g-C3N4) photocatalyst. It was revealed that the monodispersed Ag nanoparticles were well dispersed on the surface of graphene-like g-C3N4 (G-g-C3N4). The Ag/G-g-C3N4 displayed an enhanced photocatalytic activity for methylene blue degradation and the degradation rate was 10 times higher than that of pristine g-C3N4 under visible light irradiation. The enhancement of photocatalytic activity could be attributed to the surface plasmon resonance effect of Ag and large surface area (189.9 m2 g?1) of G-g-C3N4, which improve the visible light absorption ability and provide abundant reactive sites as well as promoting photogenerated electron–hole pair separation.
机译：为了克服原始gC 3 N 4 的固有缺点，我们演示了一种简单的热氧化剥落技术-光沉积技术制备类似Ag /石墨烯的gC 3 N 4 （Ag / GgC < sub> 3 N 4 ）光催化剂。结果表明，单分散的Ag纳米颗粒很好地分散在石墨烯状的gC 3 N 4 表面（GgC 3 N 4 ）。 Ag / GgC 3 N 4 对亚甲基蓝的降解具有增强的光催化活性，降解速率为10在可见光照射下，比原始gC 3 N 4 的高出三倍。 Ag的表面等离振子共振效应和较大的表面积（189.9 m 2 g ？1 ）的GgC 3 N 4 ，可提高可见光吸收能力并提供丰富的反应位以及促进光生电子-空穴对的分离。

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