气候变化领域集成服务门户(CCPortal): Constructing Cu defect band within TiO2 and supporting NiOx nanoparticles for efficient CO2 photoreduction

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DOI	10.1039/d3dt04191c
	Constructing Cu defect band within TiO2 and supporting NiOx nanoparticles for efficient CO2 photoreduction
	Tang, Jun-ying; Liu, Xiao-jing; Guo, Rui-tang; Wang, Juan; Wang, Qing-shan; Pan, Wei-guo
发表日期	2024
ISSN	1477-9226
EISSN	1477-9234
起始页码	53
结束页码	9
卷号	53 期号:9
英文摘要	Effectively harnessing solar energy for the conversion of CO2 into valuable chemical energy presents a viable solution to address energy scarcity and climate change concerns. Nonetheless, the limited light absorption and sluggish charge kinetics significantly hinder the photoreduction of CO2. In this study, we employed a facile sol-gel method combined with wetness impregnation to synthesize Cu-doped TiO2 coated with NiOx nanoparticles. Various characterizations verified the successful incorporation of Cu ions into the TiO2 crystal lattice and the formation of NiOx co-catalysts within the composites. The optimal performance attained with CTN-0.5 demonstrates an output of 11.85 mu mol h(-1) g(-1) for CO and 9.51 mu mol h(-1) g(-1) for CH4, which represent a 4.4-fold and 15.6-fold increase, respectively, compared to those achieved with pure TiO2. The induced Cu defect band broadens the light absorption by decreasing the conduction band edge of TiO2, while NiOx upshifts the valence band of TiO2 because of the interaction of valence orbitals. Light irradiation EPR and FTIR tests suggest that the collaboration of CuOx and NiOx promotes the formation of oxygen vacancies/defects and a rapid charge transfer pathway, thereby provides numerous active sites and electrons to enhance CO2 photoreduction performance.
语种	英语
WOS研究方向	Chemistry
WOS类目	Chemistry, Inorganic & Nuclear
WOS记录号	WOS:001157784500001
来源期刊	DALTON TRANSACTIONS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/295806
作者单位	University of Shanghai for Science & Technology; Shanghai University of Electric Power
推荐引用方式 GB/T 7714	Tang, Jun-ying,Liu, Xiao-jing,Guo, Rui-tang,et al. Constructing Cu defect band within TiO2 and supporting NiOx nanoparticles for efficient CO2 photoreduction[J],2024,53(9).
APA	Tang, Jun-ying,Liu, Xiao-jing,Guo, Rui-tang,Wang, Juan,Wang, Qing-shan,&Pan, Wei-guo.(2024).Constructing Cu defect band within TiO2 and supporting NiOx nanoparticles for efficient CO2 photoreduction.DALTON TRANSACTIONS,53(9).
MLA	Tang, Jun-ying,et al."Constructing Cu defect band within TiO2 and supporting NiOx nanoparticles for efficient CO2 photoreduction".DALTON TRANSACTIONS 53.9(2024).