Sulfur and carbon co-doped g-C_(3)N_(4)microtubes with enhanced photocatalytic H2 production activity  

作　　者：Yang GE Quanhao SHEN Qi ZHANG Naixu LI Danchen LU Zhaoming ZHANG Zhiwei FU Jiancheng ZHOU 

机构地区：[1]School of Chemistry and Chemical Engineering,Southeast University,Nanjing 211189,China [2]Shangdong Yellow Triangle Biotechnology Industry Research Institute Co.,Ltd.,Dongying 257091,China [3]Xuzhou B&C Chemical Co.,Ltd.,Xuzhou 221300,China

出　　处：《Frontiers in Energy》2024年第1期110-121,共12页能源前沿（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant No.22078057);the National Natural Science Foundation of China(Key Program of Joint Fund,Grant No.U22A20435);the Fundamental Research Funds for the Central Universities(Grant No.2242023K5001);the Scientific and Technological Innovation Project of Carbon Emission Peak and Carbon Neutrality of Jiangsu Province(Grant No.BK20220001).

摘　　要：Metal-free graphitic carbon nitride(g-C_(3)N_(4))has captured significant attention as a low-cost and efficient hydrogen production photocatalyst through.Effectively regulating the microstructure and accelerating the separation of photogenerated carriers remain crucial strategies for promoting the photocatalytic performance of this material.Herein,a novel sulfur–carbon co-doped g-C_(3)N_(4)(SCCN)hierarchical microtubules filled with abundant nanosheets inside by thermal polymerization is reported.Numerous nanosheets create abundant pores and cavities inside the SCCN microtubes,thereby increasing the specific surface area of g-C_(3)N_(4)and providing sufficient reactant attachment sites.Besides,the hierarchical structure of SCCN microtubules strengthens the reflection and scattering of light,and the utilization of visible light is favorably affected.More importantly,co-doping S and C has greatly improved the photocatalytic performance of graphitic carbon nitride,optimized the band gap structure and enhanced the photogenerated carrier splitting.Consequently,the SCCN exhibits a remarkable photocatalytic H_(2)evolution rate of 4868μmol/(g·h).This work demonstrates the potential of multi-nonmetal doped g-C_(3)N_(4)as the ideal photocatalyst for H2 evolution.

关 键 词：carbon nitride PHOTOCATALYSIS hydrogen production 

分 类 号：TQ116.2[化学工程—无机化工] O643.36[理学—物理化学] O644.1[理学—化学]