g-C3N4/B doped g-C3N4 quantum dots heterojunction photocatalysts for hydrogen evolution under visible light
g-C3N4/B doped g-C3N4 quantum dots heterojunction photocatalysts for hydrogen evolution under visible light
复制标题
g-C3N4/B掺杂g-C3N4量子点异质结光催化剂在可见光下析氢
DOI：
10.1016/j.ijhydene.2018.11.067
复制
发表时间：
2019-01-08
影响因子：
7.2
通讯作者：
Li, Zhongjun
中科院分区：
文献类型：
--
作者：
Wang, Yaping;Li, Yike;Li, Zhongjun
开发高活性、环境友好的水分解光催化剂仍然是太阳能转化的一个挑战。本文以三聚氰胺和氧化硼为前驱体，采用熔盐法制备了B掺杂g-C3 N4量子点（BCNQDs）。通过水热法在g-C3 N4表面引入BCNQDs，构建了g-C3 N4/BCNQDs异质结。所得的g-C3 N4/BCNQDs异质结在可见光照射下表现出增强的析氢分解水的性能。基于g-C3 N4和BCNQD之间形成的异质结的能带结构匹配良好的光催化活性提高的机制进行了探索和讨论。(C)2018年氢能出版有限责任公司。由爱思唯尔有限公司出版。保留所有权利。
Developing high activity and eco-friendly photocatalysts for water splitting is still a challenge in solar energy conversion. In this paper, B doped g-C3N4 quantum dots (BCNQDs) were prepared via a facile molten salt method using melamine and boron oxide as precursors. By introducing BCNQDs onto the surface of g-C3N4, g-C3N4/BCNQDs heterojunction was constructed via hydrothermal treatment. The resulting g-C3N4/BCNQDs heterojunction exhibits enhanced hydrogen evolution performance for water splitting under visible light irradiation. The mechanism underlying the improved photocatalytic activity was explored and discussed based on the formation of heterojunction between g-C3N4 and BCNQDs with well-matched band structure. (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.