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首页> 外文期刊>Catalysis science & technology >A graphene- hidden structure with diminished light shielding effect: more efficient graphene- involved composite photocatalysts
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A graphene- hidden structure with diminished light shielding effect: more efficient graphene- involved composite photocatalysts

机译：石墨烯-隐藏的结构,减少光屏蔽效应:更高效的石墨烯-参与复合催化剂

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摘要

Graphene sheets possess not only outstanding advantages in the field of photoelectrochemistry, but also some disadvantages that affect their performance. However, less attention has been paid to these negative effects while improving the properties of graphene-based materials. The light shielding effect of graphene sheets is a significant obstacle for their use in photocatalytic areas mainly due to their unavoidable exposure to light, which seriously restricts further development of the photoactivity of graphene-involved composites. Herein, to suppress such a negative effect, a type of graphene-hidden structure has been constructed, in which the graphene sheets are placed under a TiO2 spherical shell. Being well-hidden under the shell, the light shielding influence caused by these built-in graphene sheets is greatly reduced, which enables the exposed TiO2 to use light more efficiently compared to those wrapped in graphene. As a result, these hidden graphene sheets can better enhance the performance of TiO2 in the photocatalytic reduction of nitro-aromatics. Such a graphene-hidden structure weakens the light shielding disturbance while highlighting the advantages of graphene in photocatalysis processes, which may further broaden the use of graphene in the field of photoelectrochemistry.
机译：石墨烯拥有不仅突出光电化学领域的优势,但也影响他们的一些缺点的性能。这些负面影响而提高石墨烯材料的属性。石墨烯是一种光屏蔽效果为他们的使用的重大障碍主要由于其光催化领域不可避免的光照,严重限制了进一步的发展光敏graphene-involved复合材料。,抑制这种负面影响graphene-hidden结构的类型构造,石墨烯薄片放置在二氧化钛球壳。下过壳,光屏蔽这些内置的石墨烯所造成的影响床单是大大减少,使更有效地接触二氧化钛使用光相比那些包裹在石墨烯。因此,这些隐藏的石墨烯薄片可以更好提高二氧化钛的性能光催化还原nitro-aromatics。graphene-hidden结构削弱了光屏蔽干扰而突出在光催化石墨烯的优点流程,这可能会进一步扩大使用石墨烯在光电化学领域。

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