g-C3N4/B doped g-C3N4 quantum dots heterojunction photocatalysts for hydrogen evolution under visible light

被引：86
|
作者：
Wang, Yaping [1 ,2 ]
Li, Yike [3 ]
Zhao, Jingli [1 ]
Wang, Jianshe [1 ]
Li, Zhongjun [1 ]
机构：
[1] Zhengzhou Univ, Coll Chem & Mol Engn, Zhengzhou 450001, Henan, Peoples R China
[2] Zhengzhou Normal Univ, Coll Chem & Chem Engn, Zhengzhou 450044, Henan, Peoples R China
[3] Beijing Normal Univ, Analyt & Testing Ctr, Beijing 100875, Peoples R China
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2019年 / 44卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Photocatalysis; g-C3N4; Water splitting; Hydrogen evolution; GRAPHITIC CARBON NITRIDE; IN-SITU FABRICATION; H-2; EVOLUTION; ISOTYPE HETEROJUNCTION; HIGH-PERFORMANCE; NANOSHEETS; SEMICONDUCTORS; WATER; H-2-PRODUCTION; COMPOSITES;
D O I：
10.1016/j.ijhydene.2018.11.067
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
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.
引用
收藏
页码：618 / 628
页数：11
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