A facile cation-exchange approach to 2D PbS/amorphous MoSx heterojunction composites with enhanced photocatalytic activity

被引：19

作者：

Li, Ming ^{[1
]}

Wang, Xiandong ^{[1
]}

Ruan, Haoran ^{[1
]}

Zhang, Qingyan ^{[1
]}

Wu, Zhenjun ^{[2
]}

Liu, Yongping ^{[1
]}

Lu, Zhenhuan ^{[1
]}

Hai, Jiefeng ^{[1
]}

机构：

[1] Guilin Univ Technol, Coll Chem & Biol Engn, Guangxi Key Lab Electrochem & Magnetochem Funct M, Guilin 541004, Peoples R China

[2] Hunan Univ, Coll Chem & Chem Engn, State Key Lab Chem Biosensing & Chemometr, Prov Hunan Key Lab Graphene Mat & Devices, Changsha 410082, Hunan, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2018年 / 768卷

基金：

中国国家自然科学基金;

关键词：

Photocatalysis; Amorphous MoSx; Cation-exchange reaction; PbS/a-MoSx; AMORPHOUS MOLYBDENUM SULFIDE; THIN-FILM; AMMONIUM TETRATHIOMOLYBDATE; GRAPHENE OXIDE; MONO LAYER; HYDROGEN; EVOLUTION; COCATALYST; NANOSHEETS; WATER;

D O I：

10.1016/j.jallcom.2018.07.280

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：

Constructing heterojunction is one of the methods for improving the photocatalytic activity by restraining the electron-hole recombination. In this work, a simple cation-exchange approach was employed to grow amorphous MoSx (a-MoSx) on PbS surface to fabricate PbS/a-MoSx heterojunction for the first time. The formation of a-MoSx has been confirmed by XRD, Raman, TEM, EDS and XPS analysis. PbS/a-MoSx composites showed improved light harvesting ability compared with pristine PbS. The optimized composite exhibited greatly enhanced photocatalytic activity using methylene blue as the target of elimination, and displayed a photocurrent about 9 times higher than pristine PbS due to the efficient separation of photogenerated electron-hole pairs. (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：399 / 406

页数：8

共 46 条

[1] A novel heterostructured plasmonic photocatalyst with high photocatalytic activity: Ag@AgCl nanoparticles modified titanium phosphate nanoplates [J].

Ao, Yanhui ;

Bao, Jiaqiu ;

Wang, Peifang ;

Wang, Chao .

JOURNAL OF ALLOYS AND COMPOUNDS, 2017, 698 :410-419

[2]

Barin I., 2008, THERMOCHEMICAL DATA

[3] Tailoring the Height of Ultrathin PbS Nanosheets and Their Application as Field-Effect Transistors [J].

Bielewicz, Thomas ;

Dogan, Sedat ;

Klinke, Christian .

SMALL, 2015, 11 (07) :826-833

[4] Growth and photoluminescence properties of PbS nanocubes [J].

Cao, Huaqiang ;

Wang, Guozhi ;

Zhang, Sichun ;

Zhang, Xinrong .

NANOTECHNOLOGY, 2006, 17 (13) :3280-3287

[5] Synthesis and characterization of PbS/ZnO thin film for photocatalytic hydrogen production [J].

Carrasco-Jaim, Omar A. ;

Ceballos-Sanchez, O. ;

Torres-Martinez, Leticia M. ;

Moctezuma, Edgar ;

Gomez-Solis, Christian .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 2017, 347 :98-104

[6] 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

[7] Graphene oxide and carbon nitride nanosheets co-modified silver chromate nanoparticles with enhanced visible-light photoactivity and anti-photocorrosion properties towards multiple refractory pollutants degradation [J].

Chen, Fei ;

Yang, Qi ;

Wang, Shana ;

Yao, Fubing ;

Sun, Jian ;

Wang, Yali ;

Zhang, Chen ;

Li, Xiaoming ;

Niu, Chenggang ;

Wang, Dongbo ;

Zeng, Guangming .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2017, 209 :493-505

[8] Facile synthesis of urchin-like hierarchical Nb2O5 nanospheres with enhanced visible light photocatalytic activity [J].

Chen, Junli ;

Wang, Hai ;

Huang, Gailing ;

Zhang, Zhiqiang ;

Han, Lifeng ;

Song, Wei ;

Li, Mingyu ;

Zhang, Yonghui .

JOURNAL OF ALLOYS AND COMPOUNDS, 2017, 728 :19-28

[9] Bioinspired synthesis of CVD graphene flakes and graphene-supported molybdenum sulfide catalysts for hydrogen evolution reaction [J].

Chen, Ke ;

Li, Cong ;

Chen, Zhaolong ;

Shi, Liurong ;

Reddy, Sathish ;

Meng, Huan ;

Ji, Qingqing ;

Zhang, Yanfeng ;

Liu, Zhongfan .

NANO RESEARCH, 2016, 9 (01) :249-259

[10] Increased photocatalytic activity of NiO and ZnO in photodegradation of a model drug aqueous solution: Effect of coupling, supporting, particles size and calcination temperature [J].

Derikvandia, Hadis ;

Nezamzadeh-Ejhieh, Alireza .

JOURNAL OF HAZARDOUS MATERIALS, 2017, 321 :629-638

← 1 2 3 4 5 →