Gas bubbling exfoliation strategy towards 3D g-C3N4 hierarchical architecture for superior photocatalytic H2 evolution

被引:19
作者
Ansari, Hamza Majeed [1 ]
Wang, Weijia [1 ]
Lei, Lin [1 ]
Bao, Kuo [1 ]
Chang, Xinye [1 ]
Raza, Ali [1 ]
Chen, Yongfeng [1 ]
Mehboob, Asad [1 ]
Zhong, Qi [2 ]
Srivastava, Anurag [3 ]
Kaimieva, Olga [4 ]
Fan, Huiqing [1 ]
机构
[1] Northwestern Polytech Univ, Sch Mat Sci & Engn, State Key Lab Solidificat Proc, Xian 710072, Peoples R China
[2] Zhejiang Sci Tech Univ, Key Lab Adv Text Mat & Mfg Technol, Minist Educ, Hangzhou 310018, Peoples R China
[3] ABV IIITM, CNT Lab, Adv Mat Res Grp AMRG, Gwalior, India
[4] Ural Fed Univ, Inst Nat Sci & Math, Ekaterinburg, Russia
关键词
Photocatalyst; g-C3N4; Doping; Hierarchical structure; 3D macroporous network; Hydrogen production; GRAPHITIC CARBON NITRIDE; CHARGE SEPARATION; NANOSHEETS; CONSTRUCTION; COMPOSITES;
D O I
10.1016/j.jallcom.2022.165794
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
Graphitic carbon nitride (g-C3N4) shows a graphite-like layered structure, which provides a high theoretical value for solar-to-hydrogen evolution especially for a 2D nanostructure. However, conventional poly condensation induces a strong agglomeration and collapse of nanostructure, resulting in a relatively poor photocatalytic performance. To overcome this problem, we develop a gas bubbling exfoliation strategy with NH4Cl assistant to make ultrathin 2D g-C3N4 nanosheets self-assembled into a 3D macroporous network on a large scale. The hierarchical structure significantly improves the specific surface area to 176.4 m(2) g(-1) (11.6 times higher than the reference g-C3N4), which allows a large water/g-C3N4 interface for photocatalytic water reduction reaction. The ultrathin 2D g-C3N4 nanosheets show a thickness of about 1.4 nm, which greatly suppress photoinduced carriers recombination and enhance charge transfer at the interface. Furthermore, the doping of N and Cl is achieved during synthesis. As a result, the resulting g-C3N4 demonstrates a remarkable improvement in H-2 production of 12.89 mmol g(-1) h(-1), which is 21 times higher than the g-C3N4 obtained from the conventional condensation method. These explorations provide a facile guidance for the quasi 3D g-C3N4 hierarchical architecture engineering even for various energy-related applications.(c) 2022 Elsevier B.V. All rights reserved.
引用
收藏
页数:9
相关论文
共 43 条
[1]   Surface defective g-C3N4-xClx with unique spongy structure by polarization effect for enhanced photocatalytic removal of organic pollutants [J].
Bai, Xiaojuan ;
Wang, Xuyu ;
Lu, Xiongwei ;
Liang, Yunjie ;
Li, Junqi ;
Wu, Liyuan ;
Li, Haiyan ;
Hao, Qiang ;
Ni, Bing-Jie ;
Wang, Chongchen .
JOURNAL OF HAZARDOUS MATERIALS, 2020, 398
[2]   AgCl/Ag/g-C3N4 Hybrid Composites: Preparation, Visible Light-Driven Photocatalytic Activity and Mechanism [J].
Bao, Yongchao ;
Chen, Kezheng .
NANO-MICRO LETTERS, 2016, 8 (02) :182-192
[3]   Boosting photocatalytic hydrogen evolution of g-C3N4 catalyst via lowering the Fermi level of co-catalyst [J].
Cai, Hairui ;
Wang, Bin ;
Xiong, Laifei ;
Bi, Jinglei ;
Hao, Hanjing ;
Yu, Xiaojing ;
Li, Chao ;
Liu, Jiamei ;
Yang, Shengchun .
NANO RESEARCH, 2022, 15 (02) :1128-1134
[4]   FeCo alloy@N-doped graphitized carbon as an efficient cocatalyst for enhanced photocatalytic H2 evolution by inducing accelerated charge transfer [J].
Chen, Sibo ;
Yun Hau Ng ;
Liao, Jihai ;
Gao, Qiongzhi ;
Yang, Siyuan ;
Peng, Feng ;
Zhong, Xinhua ;
Fang, Yueping ;
Zhang, Shengsen .
JOURNAL OF ENERGY CHEMISTRY, 2021, 52 :92-101
[5]   Enhanced visible light photocatalytic activity and oxidation ability of porous graphene-like g-C3N4 nanosheets via thermal exfoliation [J].
Dong, Fan ;
Li, Yuhan ;
Wang, Zhenyu ;
Ho, Wing-Kei .
APPLIED SURFACE SCIENCE, 2015, 358 :393-403
[6]   g-C3N4/TiO2 Mesocrystals Composite for H2 Evolution under Visible-Light Irradiation and Its Charge Carrier Dynamics [J].
Elbanna, Ossama ;
Fujitsuka, Mamoru ;
Majima, Tetsuro .
ACS APPLIED MATERIALS & INTERFACES, 2017, 9 (40) :34844-34854
[7]   Atomically Thin Mesoporous Nanomesh of Graphitic C3N4 for High-Efficiency Photocatalytic Hydrogen Evolution [J].
Han, Qing ;
Wang, Bing ;
Gao, Jian ;
Cheng, Zhihua ;
Zhao, Yang ;
Zhang, Zhipan ;
Qu, Liangti .
ACS NANO, 2016, 10 (02) :2745-2751
[8]   Visible-light-induced WO3/g-C3N4 composites with enhanced photocatalytic activity [J].
Huang, Liying ;
Xu, Hui ;
Li, Yeping ;
Li, Huaming ;
Cheng, Xiaonong ;
Xia, Jixiang ;
Xu, Yuanguo ;
Cai, Guobin .
DALTON TRANSACTIONS, 2013, 42 (24) :8606-8616
[9]   In suit inducing electron-donating and electron-withdrawing groups in carbon nitride by one-step NH4Cl-assisted route: A strategy for high solar hydrogen production efficiency [J].
Huang, Zhaohui ;
Chen, Hui ;
Zhao, Lei ;
Fang, Wei ;
He, Xuan ;
Li, Weixin ;
Tian, Pan .
ENVIRONMENT INTERNATIONAL, 2019, 126 :289-297
[10]   Gaseous bubble-assisted in-situ construction of worm-like porous g-C3N4 with superior visible light photocatalytic performance [J].
Iqbal, Waheed ;
Yang, Bo ;
Zhao, Xu ;
Waqas, Muhammad ;
Ranf, Muhammad ;
Guo, Chongqi ;
Zhang, Jinlong ;
Mao, Yanping .
APPLIED CATALYSIS A-GENERAL, 2019, 573 :13-21