Synthesis of CdS-loaded (CuC₁₀H₂₆N₆Cl₂O₈)₃(PW₁₂O₄₀)₂ for enhanced photocatalytic degradation of tetracycline under simulated solar light irradiation
|Author:||Li, Feng1,2; Qiang, Zhuomin1; Chen, Shunqiang1;|
1College of Chemistry, Key Lab of Environment Friendly Chemistry and Application in Ministry of Education, Xiangtan University, Xiangtan, China
2Nano and Molecular Systems Research Unit, Faculty of Science, University of Oulu, P.O. Box 3000, FIN-90014, Finland
3China Tobacco Guangxi Industrial Co., Ltd, Nanning, Guangxi 530001, PR China
4School of Mechanical Engineering, Guizhou University, Guiyang, Guizhou 550025, PR China
|Online Access:||PDF Full Text (PDF, 1.2 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe2020112092189
Royal Society of Chemistry,
|Publish Date:|| 2020-11-20
Largely discharged and excreted medical pollutants pose huge threats to ecosystems. However, typical photocatalysts, such as the Keggin-typed H₃PW₁₂O₄₀, can hardly degrade these hazards under visible-light due to their broad bandgap and catalytic disability. In this work, the visible light harvesting was enabled by combining macrocyclic coordination compound CuC₁₀H₂₆N₆Cl₂O₈ with H₃PW₁₂O₄₀, and the resulting CuPW was loaded with CdS to reach robust catalytic ability to totally detoxify medicines. We prepared the CuPW–CdS composites through a facile precipitation method, and it showed excellent photocatalytic degradation for degrading tetracycline under visible-light irradiation. The (CuC₁₀H₂₆N₆Cl₂O₈)₃(PW₁₂O₄₀)₂ with 10 wt% load of CdS shows the highest performance and is ∼6 times more efficient than the pure CuPW counterpart. The heterojunctional CuPW–CdS composites promote the separation of electrons and holes, and consequentially enhance photocatalytic activity. Thanks to migration of electrons from CdS to CuPW, the photocorrosion of CdS is prohibited, resulting in a high chemical stability during photocatalysis. In this work we design a new route to the multi-structural composite photocatalysts for practical applications in medical pollutant decontamination.
|Pages:||37072 - 37079|
|Type of Publication:||
A1 Journal article – refereed
|Field of Science:||
114 Physical sciences
The authors acknowledge with thanks the financial support of Hunan 2011 Collaborative Innovation Center of Chemical Engineering & Technology with Environmental Benignity and Effective Resource Utilization and the National Natural Science Foundation of China (51965009; 21343008), Science and Technology Plan Project of Guizhou Province: 5616. Feng Li thanks the support of China Scholarship Council.
This journal is © The Royal Society of Chemistry 2019. This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.