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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] (Scholars:李留义) | Yu, Yan (Yu, Yan.) [6] (Scholars:于岩) | Wu, Ling (Wu, Ling.) [7] (Scholars:吴棱)

Indexed by:

EI Scopus SCIE

Abstract:

A multifunctional photocatalyst is constructed based on Cu-Cu2O hybrid and monolayer H1.4Ti1.65O4 center dot 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 02 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-O center dot center dot center dot Ti-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 O-2 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. (C) 2019 Elsevier Inc. All rights reserved.

Keyword:

Cinnamaldehyde Cinnamyl alcohol Cu-Cu2O hybrids Monolayer H1.4Ti1.65O4 center dot H2O nanosheets Photocatalysis

Community:

  • [ 1 ] [Song, Yujie]Fuzhou Univ, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350116, Fujian, Peoples R China
  • [ 2 ] [Wang, Hao]Fuzhou Univ, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350116, Fujian, Peoples R China
  • [ 3 ] [Liu, Guangsheng]Fuzhou Univ, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350116, Fujian, Peoples R China
  • [ 4 ] [Wang, Huan]Fuzhou Univ, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350116, Fujian, Peoples R China
  • [ 5 ] [Wu, Ling]Fuzhou Univ, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350116, Fujian, Peoples R China
  • [ 6 ] [Li, Liuyi]Fuzhou Univ, Key Lab Ecomat Adv Technol, Fuzhou 350108, Fujian, Peoples R China
  • [ 7 ] [Yu, Yan]Fuzhou Univ, Key Lab Ecomat Adv Technol, Fuzhou 350108, Fujian, Peoples R China
  • [ 8 ] [Wu, Ling]Chinese Acad Sci, Fujian Inst Res Struct Matter, State Key Lab Struct Chem, Fuzhou 350002, Fujian, Peoples R China

Reprint 's Address:

  • 吴棱

    [Wu, Ling]Fuzhou Univ, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350116, Fujian, Peoples R China;;[Wu, Ling]Chinese Acad Sci, Fujian Inst Res Struct Matter, State Key Lab Struct Chem, Fuzhou 350002, Fujian, Peoples R 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 Discipline: CHEMISTRY;

ESI HC Threshold:184

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count: 20

SCOPUS Cited Count: 17

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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