One-step synthesis of S-doped g-C3N4 nanosheets for improved visible-light photocatalytic hydrogen evolution

被引：46
|
作者：
Guo, Hui [1 ]
Shu, Zhu [1 ,2 ]
Chen, Donghang [1 ]
Tan, Yigen [1 ]
Zhou, Jun [1 ,2 ]
Meng, Fanyu [1 ]
Li, Tiantian [3 ]
机构：
[1] China Univ Geosci, Fac Mat Sci & Chem, Engn Res Ctr Nanogeomat, Minist Educ, Wuhan 430074, Peoples R China
[2] China Univ Geosci, Zhejiang Inst, Hangzhou 311305, Peoples R China
[3] Xinyang Normal Univ, Coll Chem & Chem Engn, Henan Prov Key Lab Utilizat Nonmetall Mineral Sou, Xinyang 464000, Peoples R China
来源：
CHEMICAL PHYSICS | 2020年 / 533卷
基金：
中国国家自然科学基金;
关键词：
g-C3N4; Photocatalytic H-2 evolution; S-doping; Nanosheet; Gas-templating; GRAPHITIC CARBON NITRIDE; MESOPOROUS G-C3N4; WATER; FRAMEWORKS; COBALT;
D O I：
10.1016/j.chemphys.2020.110714
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：
A facile gas-templating method was developed to realize the synchronous nano-structuring and S-doping of g-C3N4 in one step. It uses the bottom-placed (NH4)(2)SO4 as a bi-functional gas template source and doping agent to transform the up-placed melamine into S-doped g-C3N4 nanosheets (SCN-20). SCN-20 is much superior to the counterpart synthesized from the mixed melamine and (NH4)(2)SO4, and shows a highly improved efficiency 8.4 times that of bulk g-C3N4 in visible-light photocatalytic H-2 evolution. The improved performance mainly benefits from the enlarged specific surface area, enhanced light absorption and improved separation efficiency of photoinduced charge carriers. This work may inspire the facile synthesis of other nanostructured and doped g-C3N4.
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页数：7
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