具有择优晶面的二维/二维还原氧化石墨烯/三氧化钨异质结中通过快速电子转移增强光驱动水分解
Enhanced light-driven water splitting by fast electron transfer in 2D/2D reduced graphene oxide/tungsten trioxide heterojunction with preferential facets.
机构信息
School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, China.
Department of Environmental Science and Engineering, North China Electric Power University, Baoding 071003, China.
出版信息
J Colloid Interface Sci. 2019 Nov 1;555:413-422. doi: 10.1016/j.jcis.2019.08.008. Epub 2019 Aug 3.
In this work, 2D/2D tungsten trioxide (WO) plates/reduced graphene oxide (RGO) heterojunction was prepared by combining the (0 0 2) faceted WO with RGO nanosheets. An enhanced photocatalytic efficiency of O evolution was achieved due to the uncovering electronegative oxygen atoms, which results in the enhancement of photo-induced charge carrier separation efficiency. The 3 wt% RGO/WO heterojunctions display significantly the increase of O production, which is 3.9 and 7.3 times higher than those of WO nanoplates with preferential (0 0 2) facets and commercial WO. The strategy could provide an efficient approach for the fabrication of graphene-based metal oxide hybrids with exposed facets towards high photocatalytic performance.
在这项工作中，通过将（002）面的 WO 与 RGO 纳米片相结合，制备了 2D/2D 三氧化钨（WO）片/还原氧化石墨烯（RGO）异质结。由于暴露的电负性氧原子，实现了 O 演化的增强光催化效率，从而提高了光致载流子分离效率。3 wt% RGO/WO 异质结显示出 O 产量的显著增加，分别是具有优先（002）面的 WO 纳米片和商业 WO 的 3.9 倍和 7.3 倍。该策略为制备具有暴露面的基于石墨烯的金属氧化物杂化物提供了一种有效的方法，以实现高光催化性能。
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