Oxygen-vacancy-tunable mesocrystalline ZnO twin "cakes" heterostructured with CdS and Cu nanoparticles for efficiently photodegrading sulfamethoxazole

doi:10.1016/j.jece.2024.112367

IR > 理学院

	Oxygen-vacancy-tunable mesocrystalline ZnO twin "cakes" heterostructured with CdS and Cu nanoparticles for efficiently photodegrading sulfamethoxazole
	Mu, Wuwu 1; Xu, Minghui 1; Sun, Xiaofeng 2; Liu, Guorong 1; Yang, Hua1,2
	2024-04
在线发表时间	2024-03
发表期刊	Journal of Environmental Chemical Engineering
ISSN	2213-2929
卷号	12 期号:2
摘要	Understanding and designing excellent photocatalysts is crucial to incorporate them into pollutant-elimination application and has been highly concerned. In the present work, we have prepared twin-cake-like ZnO mesocrystals with tunable oxygen vacancies (OVs) by using Arabic gum as green agent, and then decorated CdS and Cu nanoparticles (NPs) on their surface to form Cu/CdS/ZnO-OVs heterostructured photocatalysts. The photodegradation performance and mechanism of the photocatalysts was elucidated through degrading sulfamethoxazole (SMX) by using simulated sunlight as the light source. It is revealed that the OVs-engineered ZnO twin "cakes" (optimal ZnO-OV3) exhibit obviously enhanced photocatalysis than normal ZnO particles synthesized without Arabic gum, which can be explained due to the improved visible-light absorption and photocarrier separation by OVs. Moreover, the decoration of CdS and/or Cu NPs onto ZnO-OV3 offers a further enhancement to the photocatalysis; particularly the ternary composite 7%Cu@20%CdS@ZnO-OV3 manifests the highest photodegradation performance, which is improved by 1.64 and 9.66 times over that of single ZnO-OV3 and CdS, respectively. This phenomenon originates from the improved separation of photocarriers by the CdS/ZnO-OV3 and Cu/ZnO-OV3 interface fields. Experiments and theories were combined to deeply study the underlying photocatalysis mechanism as well as the decomposition behavior of SMX. © 2024 Elsevier Ltd
关键词	Cadmium sulfide CdS nanoparticles Copper II-VI semiconductors Light absorption Light sources Oxygen vacancies Photoelectricity Zinc oxide CdS-ZnO Cu/CdS/ZnO-oxygen vacancy heterojunction Decomposition process Enhanced photocatalytic mechanism Mesocrystalline ZnO twin "cake" Photo-catalytic Sulfamethoxazole Sulfamethoxazole decomposition process Tunable oxygen vacancy Tunables
DOI	10.1016/j.jece.2024.112367
收录类别	EI ; SCIE
语种	英语
资助项目	Natural Science Foundation of Gansu Province of China [52162040]; [23JRRA795]
WOS研究方向	Engineering
WOS类目	Engineering, Environmental ; Engineering, Chemical
WOS记录号	WOS:001201949800001
出版者	Elsevier Ltd
EI入藏号	20241015706332
EI主题词	Heterojunctions
EI分类号	544.1 Copper ; 701.1 Electricity: Basic Concepts and Phenomena ; 712.1 Semiconducting Materials ; 714.2 Semiconductor Devices and Integrated Circuits ; 741.1 Light/Optics ; 761 Nanotechnology ; 804 Chemical Products Generally ; 804.2 Inorganic Compounds ; 933.1 Crystalline Solids
原始文献类型	Journal article (JA)
EISSN	2213-3437
引用统计	无
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/169976
专题	理学院
通讯作者	Yang, Hua
作者单位	1.School of Science, Lanzhou University of Technology, Lanzhou; 730050, China; 2.State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China
第一作者单位	兰州理工大学
通讯作者单位	兰州理工大学
第一作者的第一单位	兰州理工大学
推荐引用方式 GB/T 7714	Mu, Wuwu,Xu, Minghui,Sun, Xiaofeng,et al. Oxygen-vacancy-tunable mesocrystalline ZnO twin "cakes" heterostructured with CdS and Cu nanoparticles for efficiently photodegrading sulfamethoxazole[J]. Journal of Environmental Chemical Engineering,2024,12(2).
APA	Mu, Wuwu,Xu, Minghui,Sun, Xiaofeng,Liu, Guorong,&Yang, Hua.(2024).Oxygen-vacancy-tunable mesocrystalline ZnO twin "cakes" heterostructured with CdS and Cu nanoparticles for efficiently photodegrading sulfamethoxazole.Journal of Environmental Chemical Engineering,12(2).
MLA	Mu, Wuwu,et al."Oxygen-vacancy-tunable mesocrystalline ZnO twin "cakes" heterostructured with CdS and Cu nanoparticles for efficiently photodegrading sulfamethoxazole".Journal of Environmental Chemical Engineering 12.2(2024).