Band Engineering and Morphology Control of Oxygen‑Incorporated Graphitic Carbon Nitride Porous Nanosheets for Highly Efficient Photocatalytic Hydrogen Evolution

作     者：Yunyan Wu Pan Xiong Jianchun Wu Zengliang Huang Jingwen Sun Qinqin Liu Xiaonong Cheng Juan Yang Junwu Zhu Yazhou Zhou Yunyan Wu;Pan Xiong;Jianchun Wu;Zengliang Huang;Jingwen Sun;Qinqin Liu;Xiaonong Cheng;Juan Yang;Junwu Zhu;Yazhou Zhou

作者机构：Key Laboratory for Soft Chemistry and Functional MaterialsMinistry of EducationNanjing University of Science and TechnologyNanjing 210094People’s Republic of China School of Materials Science and EngineeringJiangsu UniversityZhenjiang 212013People’s Republic of China Institute of Nuclear Science and TechnologySichuan UniversityChengdu 610064People’s Republic of China 

出 版 物：《Nano-Micro Letters》 (纳微快报（英文版）)

年 卷 期：2021年第13卷第3期

页      面：95-106页

核心收录：

学科分类：081702[工学-化学工艺] 081705[工学-工业催化] 07[理学] 070205[理学-凝聚态物理] 08[工学] 0817[工学-化学工程与技术] 080501[工学-材料物理与化学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：This work was supported by the National Science Foundation of China(51772152,51702129,51572114,51972150,21908110,and 51902161) Fundamental Research Funds for the Central Universities(30919011269,30919011110,and 1191030558) Y.W.thanks the Key University Science Research Project of Jiangsu province(16KJB430009) Y.Z.thanks for the support from the Postdoctoral Science Foundation(2018M630527) China Scholarship Council(201708320150) J.S.thanks the Natural Science Foundation of Jiangsu Province(BK20190479,1192261031693) 

主　　题：Graphitic carbon nitride nanosheet Hollow morphology Oxygen incorporating Multiple thermal treatment Photocatalytic hydrogen evolution 

摘      要：Graphitic carbon nitride(g-C3N4)-based photocatalysts have shown great potential in the splitting of ***,the intrinsic drawbacks of g-C3N4,such as low surface area,poor diffusion,and charge separation efficiency,remain as the bottleneck to achieve highly efficient hydrogen ***,a hollow oxygen-incorporated g-C3N4 nanosheet(OCN)with an improved surface area of 148.5 m2 g^−1 is fabricated by the multiple thermal treatments under the N2/O2 atmosphere,wherein the C–O bonds are formed through two ways of physical adsorption and *** physical characterization and theoretical calculation indicate that the O-adsorption can promote the generation of defects,leading to the formation of hollow morphology,while the O-doping results in reduced band gap of *** optimized OCN shows an excellent photocatalytic hydrogen evolution activity of 3519.6μmol g^−1 h^−1 for~20 h,which is over four times higher than that of g-C3N4(850.1μmol g^−1 h^−1)and outperforms most of the reported g-C3N4 catalysts.