In-situ growth of mesoporous Nb2O5 microspheres on g-C3N4 nanosheets for enhanced photocatalytic H2 evolution under visible light irradiation
In-situ growth of mesoporous Nb2O5 microspheres on g-C3N4 nanosheets for enhanced photocatalytic H2 evolution under visible light irradiation
复制标题
g-C3N4 纳米片上原位生长介孔 Nb2O5 微球以增强可见光照射下的光催化析氢
DOI：
10.1016/j.ijhydene.2017.02.052
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发表时间：
2017-03-09
影响因子：
7.2
通讯作者：
Li, Zhong-Jun
中科院分区：
文献类型：
--
作者：
Huang, Qun-Zeng;Wang, Ji-Chao;Li, Zhong-Jun
以Pluronic P123为结构导向剂，采用溶剂热法在g-C3 N4纳米片表面原位生长了大比表面积的介孔Nb 2 O 5微球。所得的g-C3 N4/Nb 2 O 5纳米复合材料表现出增强的可见光照射下分解水放出H-2的光催化活性相比，纯g-C3 N4。最佳的复合材料与38.1重量%的Nb 2 O 5表现出的析氢速率为1710.04 μ mol h（-1）g（-1），这是4.7倍高于纯g-C3 N4。其光催化活性的提高主要归因于异质结构中充分的接触界面和较大的比表面积，从而有效地分离了g-C3 N4和Nb 2 O 5之间的电荷。(C)2017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。
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.