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author:

Wang, Zhongming (Wang, Zhongming.) [1] | Xiao, Mingquan (Xiao, Mingquan.) [2] | Wang, Xiaoxiao (Wang, Xiaoxiao.) [3] | Wang, Hong (Wang, Hong.) [4] | Chen, Xun (Chen, Xun.) [5] (Scholars:陈旬) | Dai, Wenxin (Dai, Wenxin.) [6] (Scholars:戴文新) | Yu, Yan (Yu, Yan.) [7] (Scholars:于岩) | Fu, Xianzhi (Fu, Xianzhi.) [8] (Scholars:付贤智)

Indexed by:

EI Scopus SCIE

Abstract:

Thermo-driven photocatalytic CO2 hydrogenation is studied for NiOx/Nb2O5 from the point of CO2 and H-2 adsorption behavior. Photothermal synergistic and Ni modification dramatically changed the electron transfer behavior of CO2 adsorption (CO2 (ads)) and H-2 (ads) via regulating Fermi level and providing Ni-0 and V(O)s adsorption sites, respectively. The H-2 (ads) at Ni-0 site donates electrons to NiOx/Nb2O5 (pre-oxidized) and CO2 (ads) at V(O)s-Nb5+ or Ni-0 site accepts electrons from NiOx/Nb2O5 (pre-reduced), while NiOx/Nb2O5 displayed excellent photocatalytic activities. Furthermore, in situ DRIFTS results suggested that CO2 (ads) will form two reaction pathways: (1) CO2 (ads) at Ni-0 site directly hydrogenated with H atoms (H-2 molecule dissociates at Ni-0 to form two H-atoms) to generate CH4 and C2H6 through COOH intermediate; (2) CO2 (ads) form dimer CO2 . CO(2)(delta- )species at V(O)s-Nb5+ site, and it will be further disproportioned to produce CO and CO(3)(delta- )species, then CO(3)(delta- )species are gradually hydrogenated to form CH4 and C2H6. Moreover, increasing the number of CO2/H-2 molecules accepts/donates electrons will also improve the reduction degree of CO2 . This work offers a new explanation for photothermal synergistic.

Keyword:

Adsorption behavior of CO2 and H-2 CO2 hydrogenation Electron transfer Reaction pathways Thermo-driven photocatalysis

Community:

  • [ 1 ] [Wang, Zhongming]Fuzhou Univ, Coll Mat Sci & Engn, Key Lab Ecomat Adv Technol, Fuzhou 350108, Peoples R China
  • [ 2 ] [Dai, Wenxin]Fuzhou Univ, Coll Mat Sci & Engn, Key Lab Ecomat Adv Technol, Fuzhou 350108, Peoples R China
  • [ 3 ] [Yu, Yan]Fuzhou Univ, Coll Mat Sci & Engn, Key Lab Ecomat Adv Technol, Fuzhou 350108, Peoples R China
  • [ 4 ] [Wang, Zhongming]Fuzhou Univ, Res Inst Photocatalysis, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350108, Peoples R China
  • [ 5 ] [Xiao, Mingquan]Fuzhou Univ, Res Inst Photocatalysis, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350108, Peoples R China
  • [ 6 ] [Wang, Xiaoxiao]Fuzhou Univ, Res Inst Photocatalysis, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350108, Peoples R China
  • [ 7 ] [Wang, Hong]Fuzhou Univ, Res Inst Photocatalysis, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350108, Peoples R China
  • [ 8 ] [Chen, Xun]Fuzhou Univ, Res Inst Photocatalysis, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350108, Peoples R China
  • [ 9 ] [Dai, Wenxin]Fuzhou Univ, Res Inst Photocatalysis, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350108, Peoples R China
  • [ 10 ] [Fu, Xianzhi]Fuzhou Univ, Res Inst Photocatalysis, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350108, Peoples R China
  • [ 11 ] [Wang, Zhongming]Qingyuan Innovat Lab, Quanzhou 362801, Peoples R China
  • [ 12 ] [Xiao, Mingquan]Qingyuan Innovat Lab, Quanzhou 362801, Peoples R China
  • [ 13 ] [Wang, Xiaoxiao]Qingyuan Innovat Lab, Quanzhou 362801, Peoples R China
  • [ 14 ] [Wang, Hong]Qingyuan Innovat Lab, Quanzhou 362801, Peoples R China
  • [ 15 ] [Dai, Wenxin]Qingyuan Innovat Lab, Quanzhou 362801, Peoples R China

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Source :

APPLIED SURFACE SCIENCE

ISSN: 0169-4332

Year: 2022

Volume: 592

6 . 7

JCR@2022

6 . 3 0 0

JCR@2023

ESI Discipline: MATERIALS SCIENCE;

ESI HC Threshold:91

JCR Journal Grade:1

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count: 22

SCOPUS Cited Count: 19

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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