Role of SnS2 in 2D-2D SnS2/TiO2 Nanosheet Heterojunctions for Photocatalytic Hydrogen Evolution

Sun, Linqiang1,3; Zhao, Zhicheng1; Li, Shun1,2; Su, Yiping1; Huang, Liang4; Shao, Ningning1; Liu, Fei1; Bu, Yibin1; Zhang, Haijun4; Zhang, Zuotai1

2019-04

10.1021/acsanm.9b00122

ACS Applied Nano Materials   影响因子和分区

2574-0970

Constructing heterojunctions with face-to-face interface is a new avenue for accelerating the charge separation in semiconductor photocatalysts toward highly efficient solar water splitting systems. Here, a novel SnS2/TiO2 2D-2D ultrathin nanosheet heterostructure was fabricated via a hydrothermal route in two steps. The obtained 2D-2D SnS2/TiO2 nanojunction has not only provided large contact areas but also shortened the charge transport distance, resulting in significantly enhanced photocatalytic H-2 evolution property. The H-2 generation rate obtained for the optimized sample reaches 652.4 mu mol h(-1)g(1), far exceeding (similar to 8 times) that of pristine TiO2 and SnS2 ultrathin nanosheets under simulated solar irradiation. Moreover, further analysis reveals a photoinduced carrier transfer from TiO2 to SnS2 at the interface junction, which causes a partial reduction of the SnS2 cocatalyst to SnS in the nanocomposite during the photocatalytic reactions. These results not only demonstrate that the construction of 2D-2D heterojunction is a promising approach to improve the photocatalytic H-2 production activity of nanostructured semiconductor photocatalysts but also provide new understanding into the role and evolution of SnS2 nanosheets during the photocatalytic reaction process in heterogeneous photocatalyst systems.

solar water splitting two dimensional materials nanojunction cocatalyst interfacial charge transfer

ESCI ; EI ; SCI

英语

第一

Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control[2017B030-301012]

Science & Technology - Other Topics ; Materials Science

Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary

WOS:000466443000042

AMER CHEMICAL SOC

20193407345308

Charge transfer ; Heterojunctions ; Hydrogen production ; IV-VI semiconductors ; Layered semiconductors ; Nanosheets ; Photocatalytic activity ; Semiconducting tin compounds ; Tin compounds ; TiO2 nanoparticles ; Titanium dioxide

Gas Fuels:522 ; Compound Semiconducting Materials:712.1.2 ; Semiconductor Devices and Integrated Circuits:714.2 ; Nanotechnology:761 ; Chemical Reactions:802.2 ; Inorganic Compounds:804.2 ; Solid State Physics:933

Web of Science

1.Southern Univ Sci & Technol, Guangdong Prov Key Lab Soil & Groundwater Pollut, Sch Environm Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China;
2.Southern Univ Sci & Technol, Acad Adv Interdisciplinary Studies, Shenzhen 518055, Guangdong, Peoples R China;
3.Shenzhen Technol Univ, Shenzhen 518118, Guangdong, Peoples R China;
4.Wuhan Univ Sci & Technol, State Key Lab Refractories & Met, Wuhan 430081, Hubei, Peoples R China

Sun, Linqiang,Zhao, Zhicheng,Li, Shun,et al. Role of SnS2 in 2D-2D SnS2/TiO2 Nanosheet Heterojunctions for Photocatalytic Hydrogen Evolution[J]. ACS Applied Nano Materials,2019,2(4):2144-2151.

Sun, Linqiang.,Zhao, Zhicheng.,Li, Shun.,Su, Yiping.,Huang, Liang.,...&Zhang, Zuotai.(2019).Role of SnS2 in 2D-2D SnS2/TiO2 Nanosheet Heterojunctions for Photocatalytic Hydrogen Evolution.ACS Applied Nano Materials,2(4),2144-2151.

Sun, Linqiang,et al."Role of SnS2 in 2D-2D SnS2/TiO2 Nanosheet Heterojunctions for Photocatalytic Hydrogen Evolution".ACS Applied Nano Materials 2.4(2019):2144-2151.