Single Pt atoms deposition on g-C3N4 nanosheets for photocatalytic H2 evolution or NO oxidation under visible light

被引:117
作者
Ou, Man [1 ,2 ]
Wan, Shipeng [1 ,2 ]
Zhong, Qin [1 ,2 ]
Zhang, Shule [1 ,2 ]
Wang, Yanan [1 ,2 ]
机构
[1] Nanjing Univ Sci & Technol, Sch Chem Engn, Nanjing 210094, Jiangsu, Peoples R China
[2] Nanjing AIREP Environm Protect Technol Co Ltd, Nanjing 210091, Jiangsu, Peoples R China
关键词
Single Pt atoms; g-C3N4; nanosheets; Photoatalytic H-2 evolution; Photoatalytic oxidation; CARBON NITRIDE NANOSHEETS; HYDROGEN EVOLUTION; AQUEOUS-SOLUTIONS; Z-SCHEME; GRAPHENE; TIO2; COMPOSITES; CATALYSTS; COCATALYST; GENERATION;
D O I
10.1016/j.ijhydene.2017.09.047
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
Generally, the outstanding photoactivity of the semiconductor photocatalyst often attributes to the loaded Pt or H2PtCl6 solution. However, the utilization efficiency of Pt is relatively low due to the agglomeration during the loading or photocatalytic reaction process. Here, we have successfully synthesized the single Pt atoms supported on g-C3N4 nanosheets (Pt-SA-CN) with dilute amounts of Pt (<0.3 wt% Pt) by a facile incipient wetness impregnation. The single Pt atoms are uniformly embedded into the g-C3N4 nanosheets via Pt-N coordination bonds. Surprisingly, with the introduction of single Pt atoms, the Pt-SACN photocatalysts exhibit both higher photocatalytic H-2 evolution and photo-oxidation of NO to NO3. Especially, the PtO2-SA-CN photocatalyst displays the most excellent photo catalytic performance in the series of Pt-SA-CN samples, and even higher than that of the g-C3N4 nanosheets in H2PtCl6 (1 wt% Pt) solution and the Pt loaded on g-C3N4 surface by photodeposition method. The utilization efficiency of Pt has a considerable enhancement and the photoactivity is also improved. The reasons for the enhanced photocatalytic performance of Pt-SA-CN samples are also further discussed. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:27043 / 27054
页数:12
相关论文
共 44 条
[1]   Dendritic Tip-on Polytriazine-Based Carbon Nitride Photocatalyst with High Hydrogen Evolution Activity [J].
Bhunia, Manas K. ;
Melissen, Sigismund ;
Parida, Manas R. ;
Sarawade, Pradip ;
Basset, Jean-Marie ;
Anjum, Dalaver H. ;
Mohammed, Omar F. ;
Sautet, Philippe ;
Le Bahers, Tangui ;
Takanabe, Kazuhiro .
CHEMISTRY OF MATERIALS, 2015, 27 (24) :8237-8247
[2]   MoS2/Graphene Cocatalyst for Efficient Photocatalytic H2 Evolution under Visible Light Irradiation [J].
Chang, Kun ;
Mei, Zongwei ;
Wang, Tao ;
Kang, Qing ;
Ouyang, Shuxin ;
Ye, Jinhua .
ACS NANO, 2014, 8 (07) :7078-7087
[3]   Synergetic Integration of Cu1.94S-ZnxCd1-xS Heteronanorods for Enhanced Visible-Light-Driven Photocatalytic Hydrogen Production [J].
Chen, Yueguang ;
Zhao, Shu ;
Wang, Xian ;
Peng, Qing ;
Lin, Rui ;
Wang, Yu ;
Shen, Rongan ;
Cao, Xing ;
Zhang, Libo ;
Zhou, Gang ;
Li, Jun ;
Xia, Andong ;
Li, Yadong .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2016, 138 (13) :4286-4289
[4]   Single Atom (Pd/Pt) Supported on Graphitic Carbon Nitride as an Efficient Photocatalyst for Visible-Light Reduction of Carbon Dioxide [J].
Gao, Guoping ;
Jiao, Yan ;
Waclawik, Eric R. ;
Du, Aijun .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2016, 138 (19) :6292-6297
[5]   One-step preparation of iodine-doped graphitic carbon nitride nanosheets as efficient photocatalysts for visible light water splitting [J].
Han, Qing ;
Hu, Chuangang ;
Zhao, Fei ;
Zhang, Zhipan ;
Chen, Nan ;
Qu, Liangti .
JOURNAL OF MATERIALS CHEMISTRY A, 2015, 3 (08) :4612-4619
[6]   Properties of O2•- and OH• formed in TiO2 aqueous suspensions by photocatalytic reaction and the influence of H2O2 and some ions [J].
Hirakawa, T ;
Nosaka, Y .
LANGMUIR, 2002, 18 (08) :3247-3254
[7]   Copolymerization with 2,4,6-Triaminopyrimidine for the Rolling-up the Layer Structure, Tunable Electronic Properties, and Photocatalysis of g-C3N4 [J].
Ho, Wingkei ;
Zhang, Zizhong ;
Lin, Wei ;
Huang, Shuping ;
Zhang, Xianwen ;
Wang, Xuxu ;
Huang, Yu .
ACS APPLIED MATERIALS & INTERFACES, 2015, 7 (09) :5497-5505
[8]   Porous carbon nitride nanosheets for enhanced photocatalytic activities [J].
Hong, Jindui ;
Yin, Shengming ;
Pan, Yunxiang ;
Han, Jianyu ;
Zhou, Tianhua ;
Xu, Rong .
NANOSCALE, 2014, 6 (24) :14984-14990
[9]   Platinum-modified covalent triazine frameworks hybridized with carbon nanoparticles as methanol-tolerant oxygen reduction electrocatalysts [J].
Kamiya, Kazuhide ;
Kamai, Ryo ;
Hashimoto, Kazuhito ;
Nakanishi, Shuji .
NATURE COMMUNICATIONS, 2014, 5
[10]   Novel photocatalysts Pt/Cd1-xZnxS/ZnO/Zn(OH)2: Activation during hydrogen evolution from aqueous solutions of ethanol under visible light [J].
Kozlova, Ekaterina A. ;
Cherepanova, Svetlana V. ;
Markovskaya, Dina V. ;
Saraev, Andrey A. ;
Gerasimov, Evgeny Yu. ;
Parmon, Valentin N. .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2016, 183 :197-205