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author:

Song, Yujie (Song, Yujie.) [1] | Wang, Hao (Wang, Hao.) [2] | Liu, Guangsheng (Liu, Guangsheng.) [3] | Wang, Huan (Wang, Huan.) [4] | Li, Liuyi (Li, Liuyi.) [5] | Yu, Yan (Yu, Yan.) [6] | Wu, Ling (Wu, Ling.) [7]

Indexed by:

EI

Abstract:

A multifunctional photocatalyst is constructed based on Cu-Cu2O hybrid and monolayer H1.4Ti1.65O4·H2O nanosheets via an in situ photo-deposition process (Cu-Cu2O/TNS). The prepared sample enables the oxidation of cinnamyl alcohol to cinnamaldehyde with over 95% of selectivity under visible light irradiation using molecule O2 as the oxidant. In situ FTIR spectra suggest that the Lewis acid sites in TNS would selectively adsorbed the hydroxyl of cinnamyl alcohol forming surface –C–OTi–O– coordination species. UV-DRS spectra reveal that light adsorption of TNS can be extended to visible light region due to the interface charges transfer from –C–OH to Ti–O– via the surface coordination, resulting in the activation of –OH in alcohol. In situ ESR further indicates that directional interface charge transfer induces the charge enrichment in Ti atoms of TiO6, facilitating O2 adsorption. XAFS results reveal that the hybrid electronic states of Cu-Cu2O efficiently improve the interface electronic transfer kinetics to inhibit the intramolecular hydrogen transfer for dominating the selectivity towards cinnamaldehyde. This work highlights the synergistic effect of surface coordination-activation-photocatalysis for selective photosynthesis of fine chemicals. © 2019 Elsevier Inc.

Keyword:

Charge transfer Chemical activation Copper oxides Electronic states Fourier transform infrared spectroscopy Interface states Light Monolayers Nanosheets Oxide minerals Photocatalysis Titanium compounds

Community:

  • [ 1 ] [Song, Yujie]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou; Fujian; 350116, China
  • [ 2 ] [Wang, Hao]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou; Fujian; 350116, China
  • [ 3 ] [Liu, Guangsheng]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou; Fujian; 350116, China
  • [ 4 ] [Wang, Huan]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou; Fujian; 350116, China
  • [ 5 ] [Li, Liuyi]Key Laboratory of Eco-materials Advanced Technology, Fuzhou University, Fuzhou; Fujian; 350108, China
  • [ 6 ] [Yu, Yan]Key Laboratory of Eco-materials Advanced Technology, Fuzhou University, Fuzhou; Fujian; 350108, China
  • [ 7 ] [Wu, Ling]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou; Fujian; 350116, China
  • [ 8 ] [Wu, Ling]State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Science, Fuzhou; Fujian; 350002, China

Reprint 's Address:

  • [wu, ling]state key laboratory of structural chemistry, fujian institute of research on the structure of matter, chinese academy of science, fuzhou; fujian; 350002, china;;[wu, ling]state key laboratory of photocatalysis on energy and environment, fuzhou university, fuzhou; fujian; 350116, china

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Source :

Journal of Catalysis

ISSN: 0021-9517

Year: 2019

Volume: 370

Page: 461-469

7 . 8 8 8

JCR@2019

6 . 5 0 0

JCR@2023

ESI HC Threshold:184

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 20

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 4

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