Enhanced photocatalytic performance of chemically bonded SiC-graphene composites for visible-light-driven overall water splitting

Enhanced photocatalytic performance of chemically bonded SiC-graphene composites for visible-light-driven overall water splitting
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增强化学键合 SiC-石墨烯复合材料的光催化性能,用于可见光驱动的整体水分解

DOI:
10.1016/j.ijhydene.2013.07.062
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发表时间:
2013-09
影响因子:
7.2
通讯作者:
Xiangyun Guo
Xiangyun Guo
中科院分区:
工程技术2区
文献类型:
--
作者:
Yunwei Wang;Xiaoning Guo;Lili Dong;Guoqiang Jin;Yingyong Wang;Xiangyun Guo

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采用化学接枝法制备了化学键合SiC-石墨烯复合材料。SiC和石墨烯之间的Si-C键可以形成异质结界面。化学键和异质结界面有利于光生电子从SiC到石墨烯的快速转移,从而避免与空穴的复合。结果表明,该复合材料在可见光照射下,对水的光催化分解具有更高的活性(90%以上)。
Chemically bonded SiC-graphene composites were prepared by a chemical grafting method. The Si–C bonds between SiC and graphene can form a heterojunction interface. The chemical bonding and the heterojunction interface are beneficial to the quick transfer of photogenerated electrons from SiC to graphene and thus avoiding the recombination with holes. As a result, the composites show an enhanced activity (more than 90%) for photocatalytic splitting of water under visible light irradiation.
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