Stable self-assembly AgI/UiO-66(NH2) heterojunction as efficient visible-light responsive photocatalyst for tetracycline degradation and mechanism insight

被引：210
作者：
Pan, Yang [1 ,2 ]
Yuan, Xingzhong [1 ,2 ]
Jiang, Longbo [1 ,2 ]
Wang, Hou [1 ,2 ]
Yu, Hanbo [1 ,2 ]
Zhang, Jin [1 ,2 ]
机构：
[1] Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Hunan, Peoples R China
[2] Hunan Univ, Minist Educ, Key Lab Environm Biol & Pollut Control, Changsha 410082, Hunan, Peoples R China
来源：
CHEMICAL ENGINEERING JOURNAL | 2020年 / 384卷
基金：
中国国家自然科学基金;
关键词：
Photocatalysis; AgI/UiO-66(NH2); Tetracycline; Z-scheme hetemjunction; Plasmonic Ag; IN-SITU SYNTHESIS; METAL-ORGANIC FRAMEWORKS; ONE-STEP SYNTHESIS; G-C3N4; NANOSHEETS; WASTE-WATER; CARBON NITRIDE; QUANTUM DOTS; MINERALIZATION EFFICIENCY; MESOPOROUS PHOTOCATALYST; DRIVEN PHOTOCATALYST;
D O I：
10.1016/j.cej.2019.123310
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
UiO-66(NH2) is a fascinating visible-light responsive amino functionalized zirconium-MOF. However, its photocatalytic performance is less satisfactory because of the disappointing separation rate of electron-hole pairs and the poor solar energy utilization ability. In this research, an unique AgI/UiO-66(NH2) heterojunction was constructed via a facile ion exchange precipitation method to reinforce the photocatalytic performance of UiO-66(NH2). The photocatalytic performance was evaluated by degrading tetracycline (TC) under visible light. The optimal TC removal rate was obtained by AgI(30% wt)/UiO-66(NH2) which was 3.8-fold of UiO-66(NH2) and 2.1-fold of AgI. TOC removal rate of AgI(30% wt)/UiO-66(NH2) reached 65.6% after 40 min irradiation which was better than pure UiO-66(NH2) (16.2%) and AgI (22.4%). The detailed intermediates and pathway of TC degradation were also illustrated. According to the results of characterization, it was determined that Ag nanoparticles (small amount) were occurred in the initial stage of photocatalytic process, which resulted in the transformation from AgI/UiO-66(NH2) type II heterojunction to AgI/Ag/UiO-66(NH2) Z-scheme heterojunction. Benefiting from the novel heterojunction and the Surface Plasmon Resonance (SPR) Ag, the redox capacity of photogenerated electron-hole pairs was enhanced and the photocorrosion of AgI was significantly suppressed, resulting in the excellent photocatalytic performance of AgI/UiO-66(NH2) composites. Moreover, the SPR Ag also resulted in the expansion of light absorption range. Besides, considerable active sites and depressed recombination of electron-hole pairs also exerted vital influence on enhancing photocatalytic activity. This work illustrates the great application potential of AgI/UiO-66(NH2) heterostructure photocatalyst in water remediation and provides a new insight in optimizing UiO-66(NH2).
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页数：16
相关论文
共 67 条
[11]   Efficient and stable Nb2O5 modified g-C3N4 photocatalyst for removal of antibiotic pollutant [J].
Hong, Yuanzhi ;
Li, Changsheng ;
Zhang, Guangyi ;
Meng, Yadong ;
Yin, Bingxin ;
Zhao, Yong ;
Shi, Weidong .
CHEMICAL ENGINEERING JOURNAL, 2016, 299 :74-84
[12]   Facile construction of hierarchical flower-like Z-scheme AgBr/Bi2WO6 photocatalysts for effective removal of tetracycline: Degradation pathways and mechanism [J].
Huang, Danlian ;
Li, Jing ;
Zeng, Guangming ;
Xue, Wenjing ;
Chen, Sha ;
Li, Zhihao ;
Deng, Rui ;
Yang, Yang ;
Cheng, Min .
CHEMICAL ENGINEERING JOURNAL, 2019, 375
[13]   One-pot di- and polysaccharides conversion to highly selective 2,5-dimethylfuran over Cu-Pd/Amino-functionalized Zr-based metal-organic framework (UiO-66(NH2))@SGO tandem catalyst [J].
Insyani, Rizki ;
Verma, Deepak ;
Cahyadi, Handi Setiadi ;
Kim, Seung Min ;
Kim, Seok Ki ;
Karanwal, Neha ;
Kim, Jaehoon .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2019, 243 :337-354
[14]  
Jiang LB, 2018, ENVIRON SCI-NANO, V5, P2604, DOI [10.1039/c8en00807h, 10.1039/C8EN00807H]
[15]   Nitrogen self-doped g-C3N4 nanosheets with tunable band structures for enhanced photocatalytic tetracycline degradation [J].
Jiang, Longbo ;
Yuan, Xingzhong ;
Zeng, Guangming ;
Liang, Jie ;
Wu, Zhibin ;
Yu, Hanbo ;
Mo, Dan ;
Wang, Hou ;
Xiao, Zhihua ;
Zhou, Chengyun .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2019, 536 :17-29
[16]   Metal-free efficient photocatalyst for stable visible-light photocatalytic degradation of refractory pollutant [J].
Jiang, Longbo ;
Yuan, Xingzhong ;
Zeng, Guangming ;
Wu, Zhibin ;
Liang, Jie ;
Chen, Xiaohong ;
Leng, Lijian ;
Wang, Hui ;
Wang, Hou .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2018, 221 :715-725
[17]   Phosphorus- and Sulfur-Codoped g-C3N4: Facile Preparation, Mechanism Insight, and Application as Efficient Photocatalyst for Tetracycline and Methyl Orange Degradation under Visible Light Irradiation [J].
Jiang, Longbo ;
Yuan, Xingzhong ;
Zeng, Guangming ;
Chen, Xiaohong ;
Wu, Zhibin ;
Liang, Jie ;
Zhang, Jin ;
Wang, Hui ;
Wang, Hou .
ACS SUSTAINABLE CHEMISTRY & ENGINEERING, 2017, 5 (07) :5831-5841
[18]   Ca2+ and Mg2+ bind tetracycline with distinct stoichiometries and linked deprotonation [J].
Jin, Lihua ;
Amaya-Mazo, Xylenia ;
Apel, Matthew E. ;
Sankisa, Sudha S. ;
Johnson, Elissa ;
Zbyszynska, Monika A. ;
Han, Alexander .
BIOPHYSICAL CHEMISTRY, 2007, 128 (2-3) :185-196
[19]   Z-scheme mesoporous photocatalyst constructed by modification of Sn3O4 nanoclusters on g-C3N4 nanosheets with improved photocatalytic performance and mechanism insight [J].
Li, Chunmei ;
Yu, Siyu ;
Dong, Hongjun ;
Liu, Chunbo ;
Wu, Haijun ;
Che, Huinan ;
Chen, Gang .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2018, 238 :284-293
[20]   Fabrication of BiOI@UIO-66(NH2)@g-C3N4 ternary Z-scheme heterojunction with enhanced visible-light photocatalytic activity [J].
Liang, Qian ;
Cui, Sainan ;
Jin, Jie ;
Liu, Changhai ;
Xu, Song ;
Yao, Chao ;
Li, Zhongyu .
APPLIED SURFACE SCIENCE, 2018, 456 :899-907
1234567