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author:

Wang, Zhi-wen (Wang, Zhi-wen.) [1] | Shi, Ying-zhang (Shi, Ying-zhang.) [2] | Liu, Cheng (Liu, Cheng.) [3] | Kang, Yue-yue (Kang, Yue-yue.) [4] | Wu, Ling (Wu, Ling.) [5]

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EI

Abstract:

Cu2O clusters/TiO2 nanosheet (CNSX) as a photocatalyst is created to tailor the selectivity of CO2 photoreduction. The catalysts show different selectivity of CO and CH4 with the increase of Cu2O mass. TiO2 nanosheet (NS) exhibits 100% selectivity of CH4 with a rate of 37.6 μmol g−1 h−1. However, CO2 would be converted to CO with selectivity of 98% and yield of 162.6 μmol g−1 h−1 on 5 wt% Cu2O/TiO2 nanosheet (CNS3). The Ti···CO2–···Ti coordination intermediate on Ti3+ sites is responsible for CH4 formation, whereas the Cu···CO2···Ti specie on Cu1-δ and Ti4+δ sites determines CO production. The Cu+–Ti3+ interface interaction on CNSX surface can generate Cu1-δ and Ti4+δ sites and eliminate Ti3+ via the charge transfer from Ti3+ to Cu+. The selectivity is thus tailored effectively by Cu+–Ti3+ interface interaction mediated CO2 coordination model. This work would offer a new perspective for tailoring the selectivity of CO2 photoreduction. © 2021 Elsevier B.V.

Keyword:

Carbon dioxide Catalyst selectivity Charge transfer Copper oxides Nanosheets Titanium dioxide

Community:

  • [ 1 ] [Wang, Zhi-wen]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou; 350116, China
  • [ 2 ] [Shi, Ying-zhang]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou; 350116, China
  • [ 3 ] [Liu, Cheng]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou; 350116, China
  • [ 4 ] [Kang, Yue-yue]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou; 350116, China
  • [ 5 ] [Wu, Ling]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou; 350116, China

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Source :

Applied Catalysis B: Environmental

ISSN: 0926-3373

Year: 2022

Volume: 301

2 2 . 1

JCR@2022

2 0 . 3 0 0

JCR@2023

ESI HC Threshold:74

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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