In situ synthesis of AgI/SnS2 heterojunction photocatalysts with superior photocatalytic activity

被引：9
作者：
Li, Qiang [1 ,2 ]
Wang, Kang [1 ,2 ]
Lu, Xiaoxiao [1 ,2 ]
Luo, Rui [1 ,2 ]
Zhang, Min [1 ,2 ]
Cui, Chaopeng [1 ,2 ]
Zhu, Guangping [1 ,2 ]
机构：
[1] Huaibei Normal Univ, Coll Phys & Elect Informat, Huaibei 235000, Peoples R China
[2] Huaibei Normal Univ, Anhui Prov Key Lab Pollutant Sensit Mat & Environ, Huaibei 235000, Peoples R China
来源：
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE | 2020年 / 15卷 / 09期
关键词：
SnS2; nanosheets; AgI nanoparticles; Heterojunctions; Photocatalysis; HYDROTHERMAL SYNTHESIS; ORGANIC POLLUTANTS; CHARGE SEPARATION; DEGRADATION; FABRICATION; PERFORMANCE; REDUCTION; NANOSHEET; NANOPARTICLES; COMPOSITES;
D O I：
10.20964/2020.09.77
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
In present study, novel visible-light-driven photocatalyst AgI/SnS2 heterojunctions were prepared with hydrothermal-precipitation method. The resulting AgI/SnS2 heterojunctions exhibited superior and stable visible photocatalytic activity on Rhodamine B (RhB) removal. The optimal heterojunction with 4:1 mass ratio of AgI: SnS2 exhibited the highest rate constant of 0.064 min(-1) for removal of RhB, which was about 2.1 and 3.4 times as much as pure AgI and SnS2, respectively. In addition, the study by photoluminescence spectroscopy (PL) indicated that the improvement of the photocatalytic efficiency could be mainly owing to the truth that the photogenerated carriers were separated and transferred effectively, resulted from the appropriate band gap match of AgI and SnS2. In addition, it was found that center dot O-2(-) radicals and h(+) were the main oxidative species responsible for removal of RhB. These features demonstrate that AgI/SnS2 heterojunction has great application potentials for pollutants removal from wastewater.
引用
收藏
页码：9256 / 9270
页数：15
相关论文
共 45 条
[11]   Efficient bacterial inactivation with Z-scheme AgI/Bi2MoO6 under visible light irradiation [J].
Liang, Jialiang ;
Liu, Fuyang ;
Deng, Jun ;
Li, Mian ;
Tong, Meiping .
WATER RESEARCH, 2017, 123 :632-641
[12]   Efficiently Synergistic Hydrogen Evolution Realized by Trace Amount of Pt-Decorated Defect-Rich SnS2 Nanosheets [J].
Liu, Guangbo ;
Qiu, Yunfeng ;
Wang, Zhiguo ;
Zhang, Jia ;
Chen, Xiaoshuang ;
Dai, Mingjin ;
Jia, Dechang ;
Zhou, Yu ;
Li, Zhonghua ;
Hu, PingAn .
ACS APPLIED MATERIALS & INTERFACES, 2017, 9 (43) :37750-37759
[13]   Fabrication of plate-on-plate Z-scheme SnS2/Bi2MoO6 heterojunction photocatalysts with enhanced photocatalytic activity [J].
Liu, Haijin ;
Du, Cuiwei ;
Bai, Haokun ;
Su, Yuzhao ;
Wei, Dandan ;
Wang, Yuqian ;
Liu, Guoguang ;
Yang, Lin .
JOURNAL OF MATERIALS SCIENCE, 2018, 53 (15) :10743-10757
[14]   An AgI@g-C3N4 hybrid core@shell structure: Stable and enhanced photocatalytic degradation [J].
Liu, Li ;
Qi, Yuehong ;
Yang, Jinyi ;
Cui, Wenquan ;
Li, Xingang ;
Zhang, Zisheng .
APPLIED SURFACE SCIENCE, 2015, 358 :319-327
[15]   Enhancing visible light photocatalytic activity of direct Z-scheme SnS2/Ag3PO4 heterojunction photocatalysts [J].
Luo, Jin ;
Zhou, Xiaosong ;
Ma, Lin ;
Xu, Limei ;
Xu, Xuyao ;
Du, Zhihua ;
Zhang, Jinquan .
MATERIALS RESEARCH BULLETIN, 2016, 81 :16-26
[16]   Enhanced photodegradation activity of methyl orange over Ag2CrO4/SnS2 composites under visible light irradiation [J].
Luo, Jin ;
Zhou, Xiaosong ;
Ma, Lin ;
Xu, Xuyao ;
Wu, Jingxia ;
Liang, Huiping .
MATERIALS RESEARCH BULLETIN, 2016, 77 :291-299
[17]   Facile constructing novel 2D porous g-C3N4/BiOBr hybrid with enhanced visible-light-driven photocatalytic activity [J].
Lv, Jiali ;
Dai, Kai ;
Zhang, Jinfeng ;
Liu, Qi ;
Liang, Changhao ;
Zhu, Guangping .
SEPARATION AND PURIFICATION TECHNOLOGY, 2017, 178 :6-17
[18]   Hydrothermal Synthesis of Single-Crystalline Bi2Fe4O9 Photocatalyst with Enhanced Visible-Light Photocatalytic Activity [J].
Ma, Huan ;
Liu, Qiyong ;
Zhang, Bo ;
Zhang, Renjie ;
Chen, Zhiyong ;
Li, Yanqiang ;
Shao, Weiquan ;
Wu, Xinyan ;
Zhang, Yongcheng ;
Ye, Wanneng .
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 2019, 19 (12) :7859-7865
[19]  
Ma S.S., 2014, MAT CH, V2, P7272
[20]  
Meng H., 2016, ZHU, V11
12345