Construction of MoS2/NiFe-Ni foam p-n heterojunction as photoanode for tetracycline degradation and simultaneous cathodic hydrogen evolution

被引:20
作者
Yu, Jiuheng [1 ]
Cong, Sumin [1 ]
Liu, Baojun [2 ]
Teng, Wei [1 ]
机构
[1] Jiangsu Univ Sci & Technol, Dept Environm & Chem Engn, Zhenjiang 212003, Jiangsu, Peoples R China
[2] Guizhou Univ, Coll Resource & Environm Engn, Key Lab Karst Georesources & Environm, Minist Educ,Guizhou Karst Environm Ecosyst Observ, Guiyang 550025, Peoples R China
来源
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING | 2022年 / 10卷 / 05期
基金
中国国家自然科学基金;
关键词
Photoelectrocatalytic; P-n heterojunction; MoS2; Layered double hydroxide; Hydrogen production; HIGHLY EFFICIENT; PHOTOCATALYTIC PERFORMANCE; CHARGE SEPARATION; G-C3N4; NANOSHEETS; AQUEOUS-SOLUTION; LIGHT; REDUCTION; ARRAYS; LDH; NANOCOMPOSITE;
D O I
10.1016/j.jece.2022.108437
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
In this work, simultaneously removing antibiotic tetracycline (TC) from wastewater coupled with pure H-2 generation has been successfully achieved through photoelectrocatalytic (PEC) technique by using MoS2/NiFe-Ni foam photoanode. The MoS2/NiFe-Ni foam was synthesized by a simple hydrothermal and electrodeposition method. The designed bifunctional PEC system leads to a high degradation efficiency of dissolved TC by up to 92% during 100 min reaction time under visible light irradiation. Meanwhile, the hydrogen production at the cathode was as high as 61.46 mu mol cm(-2), which was 15 times higher than that when the NiFe-Ni foam was used as a photoanode. The enhanced photoelectrocatalytic activity is attributed to the construction of the type-II p-n heterojunction between MoS2 and NiFe-LDH. Which contributes to improve the separation and migration efficiency of photogenerated charges. This study provides a new method for the preparation of efficient type-II p-n heterojunction catalysts.
引用
收藏
页数:15
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