In-situ growth of mesoporous Nb2O5 microspheres on g-C3N4 nanosheets for enhanced photocatalytic H2 evolution under visible light irradiation

被引：59

作者：

Huang, Qun-Zeng ^{[1
,2
]}

Wang, Ji-Chao ^{[3
]}

Wang, Pan-Pan ^{[1
]}

Yao, Hong-Chang ^{[1
]}

Li, Zhong-Jun ^{[1
]}

机构：

[1] Zhengzhou Univ, Coll Chem & Mol Engn, Zhengzhou 450001, Peoples R China

[2] Nanyang Normal Univ, Coll Chem & Pharmaceut Engn, Nanyang 473061, Peoples R China

[3] Henan Inst Sci & Technol, Coll Chem & Chem Engn, Xinxiang 453000, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2017年 / 42卷 / 10期

基金：

中国国家自然科学基金;

关键词：

Nb2O5; g-C3N4; Heterojunction; Photocatalytic activity; Hydrogen evolution; GRAPHITIC CARBON NITRIDE; HYDROGEN-PRODUCTION; HETEROJUNCTION PHOTOCATALYSTS; FACILE PREPARATION; NIOBIUM PENTOXIDE; EFFICIENT; WATER; UREA; NANOCOMPOSITES; DEGRADATION;

D O I：

10.1016/j.ijhydene.2017.02.052

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：

Large-surface-area mesoporous Nb2O5 microspheres were successfully grown in-situ on the surface of g-C3N4 nanosheets via a facile solvothermal process with the aid of Pluronic P123 as a structure-directing agent. The resultant g-C3N4/Nb2O5 nanocomposites exhibited enhanced photocatalytic activity for H-2 evolution from water splitting under visible light irradiation as compared to pure g-C3N4. The optimal composite with 38.1 wt% Nb2O5 showed a hydrogen evolution rate of 1710.04 mu mol h(-1) g(-1), which is 4.7 times higher than that of pure g-C3N4. The enhanced photocatalytic activity could be attributed to the sufficient contact interface in the heterostructure and large specific surface area, which leads to effective charge separation between g-C3N4 and Nb2O5. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：6683 / 6694

页数：12

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