Synthesis of a Cu2_ xSe/g-C3N4 heterojunction photocatalyst for efficient photocatalytic H2 evolution

被引：14

作者：

Xie, Xiang ^{[1
]}

Xue, Wenhua ^{[1
]}

Hu, Xiaoyun ^{[2
]}

Lv, Hongfei ^{[3
]}

Fan, Jun ^{[1
]}

Chen, Bo ^{[1
]}

Liu, Enzhou ^{[1
]}

机构：

[1] Northwest Univ, Xian Key Lab Special Energy Mat, Sch Chem Engn, Xian 710069, Peoples R China

[2] Northwest Univ, Sch Phys, Xian 710069, Peoples R China

[3] Northwest Inst Nonferrous Met Res, Xian 710016, Peoples R China

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2022年 / 635卷

基金：

中国国家自然科学基金;

关键词：

Cu-2_Se-x; g-C3N4; Heterojunction; In situ hot-injection method; photocatalytic H-2 evolution; SCHEME HETEROJUNCTION; H-2; EVOLUTION; NANOPARTICLES; NANOCRYSTALS; FABRICATION; INTERFACES; NANOSHEETS; G-C3N4;

D O I：

10.1016/j.colsurfa.2021.128103

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：

The Cu2_ xSe/g-C3N4 heterojunction was successfully constructed using a one-step method and employed to photocatalytic H2 evolution from water for the first time. The optimal Cu2_xSe/g-C3N4-10 wt% exhibits an efficient H2 evolution rate of 1954.9 mu mol.g_ 1.h_ 1, which is nearly 2.2 and 18.6 times higher than that of the pristine Cu2_xSe and g-C3N4. This could owe to the improved light capturing ability, abundant active sites, efficient charge carriers' separation for the appropriate band gap structures between Cu2_xSe and g-C3N4. In addition, a photocatalytic H2 production mechanism over Cu2_xSe/g-C3N4 heterojunction is analyzed based on the investigation on energy band structures and photoelectric properties of the components.

引用

页数：9

共 60 条

[1] Self-decorated Cu2-xSe nanosheets as anode materials for Li ion batteries and electrochemical hydrogen storage
Chen, Dahong
Chen, Gang
Jin, Rencheng
Xu, Haiming
[J]. CRYSTENGCOMM, 2014, 16 (13): : 2810 - 2817
[2] Copper selenide nanorods grown at room temperature by electrodeposition
Dhasade, S. S.
Thombare, J. V.
Gaikwad, R. S.
Gaikwad, S. V.
Kumbhare, S. S.
Patil, Swati
[J]. MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING, 2015, 30 : 48 - 55
[3] CoSe2 modified Se-decorated CdS nanowire Schottky heterojunctions for highly efficient photocatalytic hydrogen evolution
Du, Shiwen
Lin, Xiao
Li, Chunhe
Li, Guojun
Zheng, Baobing
Liu, Yong
Xu, Hu
Fang, Pengfei
[J]. CHEMICAL ENGINEERING JOURNAL, 2020, 389
[4] Z-scheme CdSe/ZnSe heterojunction for efficient photocatalytic hydrogen evolution
Feng, Keting
Xue, Wenhua
Hu, Xiaoyun
Fan, Jun
Liu, Enzhou
[J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2021, 622
[5] g-C3N4-Based Heterostructured Photocatalysts
Fu, Junwei
Yu, Jiaguo
Jiang, Chuanjia
Cheng, Bei
[J]. ADVANCED ENERGY MATERIALS, 2018, 8 (03)
[6] Galvanic synthesis of Cu2-XSe thin films and their photocatalytic and thermoelectric properties
Ghosh, Amrita
Kulsi, Chiranjit
Banerjee, Dipali
Mondal, Anup
[J]. APPLIED SURFACE SCIENCE, 2016, 369 : 525 - 534
[7] Construction and Visible-Light-Driven Photocatalytic Properties of LaCoO3-TiO2 Nanotube Arrays
Gong Cheng
Xiang Siwan
Zhang Zeyang
Sun Lan
Ye Chenqing
Lin Changjian
[J]. ACTA PHYSICO-CHIMICA SINICA, 2019, 35 (06) : 616 - 623
[8] An Efficient ZnIn2S4@CuInS2 Core-Shell p-n Heterojunction to Boost Visible-Light Photocatalytic Hydrogen Evolution
Guo, Xinlei
Peng, Yanhua
Liu, Guangbo
Xie, Guangwen
Guo, Yanan
Zhang, Yan
Yu, Jianqiang
[J]. JOURNAL OF PHYSICAL CHEMISTRY C, 2020, 124 (11) : 5934 - 5943
[9] Enhanced photocatalytic H2-production activity of WO3/TiO2 step-scheme heterojunction by graphene modification
He, Fei
Meng, Aiyun
Cheng, Bei
Ho, Wingkei
Yu, Jiaguo
[J]. CHINESE JOURNAL OF CATALYSIS, 2020, 41 (01) : 9 - 20
[10] In situ one-pot fabrication of g-C3N4 nanosheets/NiS cocatalyst heterojunction with intimate interfaces for efficient visible light photocatalytic H2 generation
He, Kelin
Xie, Jun
Li, Mingli
Li, Xin
[J]. APPLIED SURFACE SCIENCE, 2018, 430 : 208 - 217

← 1 2 3 4 5 6 →