DICP OpenIR
Yin and Yang Dual Characters of CuOx Clusters for C-C Bond Oxidation Driven by Visible Light
Hou, Tingting1,2; Luo, Nengchao1,2; Li, Hongji1,2; Heggen, Marc3,4; Lu, Jianmin1; Wang, Yehong1; Wang, Feng1
KeywordHeterogeneous Catalysis Visible Light Ceria Copper Titania C-c Bond Benzaldehyde
Source PublicationACS CATALYSIS
2017-06-01
DOI10.1021/acscatal.7b00629
Volume7Pages:3850-3859
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Physical
WOS Research AreaChemistry
WOS KeywordTOTAL-ENERGY CALCULATIONS ; DEFINED SURFACE PLANES ; LIGNIN MODEL COMPOUNDS ; AUGMENTED-WAVE METHOD ; PHOTOCATALYTIC OXIDATION ; CERIA CATALYST ; CEO2 NANOCRYSTALS ; AEROBIC OXIDATION ; TUNGSTEN-OXIDE ; MODIFIED TIO2
AbstractSelective cleavage of C-C bonds is pursued as a useful chemical transformation method in biomass utilization. Herein, we report a hybrid CuOx/ceria/anatase nanotube catalyst in the selective oxidation of C-C bonds under visible light irradiation. Using the lignin fi-1 model as a substrate offers 96% yields of benzaldehydes. Characterization results by high angle annular dark field scanning transmission electron microscopy (HAADF-STEM) and energy-dispersive X-ray spectroscopy element (EDX) mapping reveal that CuOx clusters are highly dispersed on the exposed anatase surface as well as on the nanosized ceria domains. In-depth investigations by Raman and ultraviolet visible diffuse reflectance spectra (UV vis DRS), together with density functional theory (DFT) calculations, further verify that the CuOx clusters present on the ceria domains increase the concentration of surface defects (Ce3+) ions and oxygen vacancies) and accordingly improve the photocatalytic activity (Yang character); the CuOx clusters decorating on anatase suppress the side reaction (oxydehydrogenation without C-C bond cleavage) because of an upward shift in the valence band (VB) edge of anatase (Yin character). Mechanism investigation indicates hydrogen abstraction from beta-carbon by photogenerated holes is a vital step in the conversion.
Language英语
WOS IDWOS:000402851600014
Citation statistics
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/152188
Collection中国科学院大连化学物理研究所
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Forschungszentrum Julich GmbH, Ernst Ruska Ctr Microscopy & Spect Electrons, D-52425 Julich, Germany
4.Forschungszentrum Juelich GmbH, Peter Grunberg Inst, D-52425 Julich, Germany
Recommended Citation
GB/T 7714
Hou, Tingting,Luo, Nengchao,Li, Hongji,et al. Yin and Yang Dual Characters of CuOx Clusters for C-C Bond Oxidation Driven by Visible Light[J]. ACS CATALYSIS,2017,7:3850-3859.
APA Hou, Tingting.,Luo, Nengchao.,Li, Hongji.,Heggen, Marc.,Lu, Jianmin.,...&Wang, Feng.(2017).Yin and Yang Dual Characters of CuOx Clusters for C-C Bond Oxidation Driven by Visible Light.ACS CATALYSIS,7,3850-3859.
MLA Hou, Tingting,et al."Yin and Yang Dual Characters of CuOx Clusters for C-C Bond Oxidation Driven by Visible Light".ACS CATALYSIS 7(2017):3850-3859.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Hou, Tingting]'s Articles
[Luo, Nengchao]'s Articles
[Li, Hongji]'s Articles
Baidu academic
Similar articles in Baidu academic
[Hou, Tingting]'s Articles
[Luo, Nengchao]'s Articles
[Li, Hongji]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Hou, Tingting]'s Articles
[Luo, Nengchao]'s Articles
[Li, Hongji]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.