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author:

Tong, Y. (Tong, Y..) [1] | Chen, L. (Chen, L..) [2] | Ning, S. (Ning, S..) [3] | Tong, N. (Tong, N..) [4] | Zhang, Z. (Zhang, Z..) [5] | Lin, H. (Lin, H..) [6] | Li, F. (Li, F..) [7] | Wang, X. (Wang, X..) [8]

Indexed by:

Scopus

Abstract:

Iron-containing HZSM-5 zeolite, which was shown as an efficient and stable photocatalyst for photocatalytic CO2 reduction in our previous research, was chosen to prepare a Ti-HZSM-5 hybrid via sol-gel method. The characterizations by XRD, UV–vis DRS, Raman, and XPS demonstrate that Ti species highly dispersed as nanoclusters or mono-sites on the HZSM-5 zeolite surface. Compared with the common TiO2-HZSM-5 composite sample, the as-prepared Ti-HZSM-5 sample exhibits an enhanced activity for photocatalytic CO2 reduction due to higher concentration of excited state electrons and faster electron transfer rate. The Ti-HZSM-5 sample with 0.99 wt% of Ti content is observed to have the highest rate for the photocatalytic CO2 reduction. And the characterization results of photocurrent and ESR reveal that Ti species and Fe species work synergistically upon UV-light irradiation, therefore, we propose a possible reaction mechanism of CO2 photoreduction on Ti-HZSM-5. This work highlights the promising prospect of hybridizing of the Fe-O species in zeolite with semiconductors for enhanced photocatalytic performance. © 2016 Elsevier B.V.

Keyword:

CO2 photoreduction; Fe–O species; HZSM-5; Semiconductor coupling; Ti–O species

Community:

  • [ 1 ] [Tong, Y.]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350002, China
  • [ 2 ] [Chen, L.]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350002, China
  • [ 3 ] [Ning, S.]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350002, China
  • [ 4 ] [Tong, N.]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350002, China
  • [ 5 ] [Zhang, Z.]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350002, China
  • [ 6 ] [Lin, H.]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350002, China
  • [ 7 ] [Li, F.]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350002, China
  • [ 8 ] [Wang, X.]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350002, China

Reprint 's Address:

  • [Zhang, Z.]State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou UniversityChina

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Source :

Applied Catalysis B: Environmental

ISSN: 0926-3373

Year: 2017

Volume: 203

Page: 725-730

1 1 . 6 9 8

JCR@2017

2 0 . 3 0 0

JCR@2023

ESI HC Threshold:226

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 41

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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