The metallic 1T-phase WS2 nanosheets as cocatalysts for enhancing the photocatalytic hydrogen evolution of g-C3N4 nanotubes

被引：145

作者：

Liang, Zhangqian ^{[1
]}

Yang, Shaorui ^{[1
]}

Wang, Xinyu ^{[1
]}

Cui, Hongzhi ^{[1
]}

Wang, Xinzhen ^{[1
]}

Tian, Jian ^{[1
]}

机构：

[1] Shandong Univ Sci & Technol, Sch Mat Sci & Engn, Qingdao 266590, Peoples R China

来源：

APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY | 2020年 / 274卷

基金：

中国国家自然科学基金;

关键词：

IT phase WS2; Graphic carbon nitride nanotube; Photocatalytic H-2 evolution; Co-catalysts; MOS2 QUANTUM DOTS; ULTRATHIN NANOSHEETS; 1T-MOS2; NANOSHEETS; H-2; EVOLUTION; WATER; 1T-WS2; DISINFECTION; FABRICATION; FACILE; HETEROSTRUCTURE;

D O I：

10.1016/j.apcatb.2020.119114

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：

Herein, we report that 2D metallic 1T-WS2 acts as co-catalyst in assisting g-C3N4 nanotubes (NTs) obtained via a simple grinding method for promoting photocatalytic H-2 production. The 1T-WS2/g-C3N4 composite with optimum 27% 1T-WS2 displays a significantly improved photocatalytic H-2 production rate (1021 mu mol h(-1) g(-1)), 17.6 times higher than g-C3N4 NTs. Besides, the apparent quantum efficiency (AQE) of 1T-WS2/g-C3N4 composite (27%) achieves 11.23% under light at lambda = 370 nm. Meanwhile, the 1T-WS2/g-C3N4 composites present an excellent photocatalytic H-2 production stability. The possible photocatalytic mechanism over 1T-WS2/g-C3N4 composites is proposed. Specifically, the photogenerated electrons from 1D g-C3N4 tubular nanostructure with open mesoporous morphology are migrated to conducive 1T-WS2 NSs quickly as electron acceptors along the 1D path. 1T-WS2 NSs can also offer abundant active sites on the edge and basal planes.

引用

页数：7

共 54 条

[1]

Acerce M, 2015, NAT NANOTECHNOL, V10, P313, DOI [10.1038/nnano.2015.40, 10.1038/NNANO.2015.40]

[2] Solvothermal synthesis of the special shape (deformable) hollow g-C3N4 nanospheres [J].

Bai, Xinjiao ;

Li, Jie ;

Cao, Chuanbao ;

Hussain, Sajad .

MATERIALS LETTERS, 2011, 65 (07) :1101-1104

[3] Targeted Synthesis of 2H-and 1T-Phase MoS2 Monolayers for Catalytic Hydrogen Evolution [J].

Chang, Kun ;

Hai, Xiao ;

Pang, Hong ;

Zhang, Huabin ;

Shi, Li ;

Liu, Guigao ;

Liu, Huimin ;

Zhao, Guixia ;

Li, Mu ;

Ye, Jinhua .

ADVANCED MATERIALS, 2016, 28 (45) :10033-10041

[4] 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

[5] Construction of Conjugated Carbon Nitride Nanoarchitectures in Solution at Low Temperatures for Photoredox Catalysis [J].

Cui, Yanjuan ;

Ding, Zhengxin ;

Fu, Xianzhi ;

Wang, Xinchen .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2012, 51 (47) :11814-11818

[6] g-C3N4-Based Heterostructured Photocatalysts [J].

Fu, Junwei ;

Yu, Jiaguo ;

Jiang, Chuanjia ;

Cheng, Bei .

ADVANCED ENERGY MATERIALS, 2018, 8 (03)

[7] One-dimensional CdS@MoS2 core-shell nanowires for boosted photocatalytic hydrogen evolution under visible light [J].

Han, Bin ;

Liu, Siqi ;

Zhang, Nan ;

Xu, Yi-Jun ;

Tang, Zi-Rong .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2017, 202 :298-304

[8] Photocatalytic hydrogen production over carbon nitride loaded with WS2 as cocatalyst under visible light [J].

Hou, Yidong ;

Zhu, Yongsheng ;

Xu, Yan ;

Wang, Xinchen .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2014, 156 :122-127

[9] The selective deposition of MoS2 nanosheets onto (101) facets of TiO2 nanosheets with exposed (001) facets and their enhanced photocatalytic H2 production [J].

Hu, Xiaolin ;

Lu, Shucao ;

Tian, Jian ;

Wei, Na ;

Song, Xiaojie ;

Wang, Xinzhen ;

Cui, Hongzhi .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2019, 241 :329-337

[10] Two-Dimensional Nanosheets and Layered Hybrids of MoS2 and WS2 through Exfoliation of Ammoniated MS2 (M = Mo,W) [J].

Jeffery, A. Anto ;

Nethravathi, C. ;

Rajamathi, Michael .

JOURNAL OF PHYSICAL CHEMISTRY C, 2014, 118 (02) :1386-1396

← 1 2 3 4 5 6 →