MOF confined in macroporous-mesoporous-TiO2 for light-boosting electrocatalytical oxygen production

Zhenxing Li, Xiaofei Xing, Junmei Chu, Kai Li Wang, Chengcheng Yu, Zhiting Wei, Yangyang Wen, Hui Sun, Zhao Kui Wang

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

A novel multiscale pore structure material is firstly synthesized by means of the MOF confined in ordered macroporous-mesoporous-TiO2 (FeCoNi-MOF@TiO2). We have successfully achieved that three-scale ordered porous structures are integrated into one material, and the porous sizes are 400 nm, 5.1 nm and 3.4 nm, respectively. A photo-based electrocatalytic OER catalytic system was designed, and the FeCoNi-MOF@TiO2 as a catalyst exhibits high catalytical activity for OER under the irradiation of UV light. The electrons of macroporous-mesoporous-TiO2 are excited and transferred to the loaded FeCoNi-MOF, when the macroporous-mesoporous-TiO2 absorbs the UV light, which can improve the conductivity of the FeCoNi-MOF. The photo-induced electron of macroporous-mesoporous-TiO2 significantly boosts the electrocatalytic active of FeCoNi-MOF. These results provide a promising route on enhancing the catalytic activity of MOFs in electrocatalytic reaction.

Original languageEnglish
Pages (from-to)125-133
Number of pages9
JournalMaterials Today Energy
Volume13
DOIs
StatePublished - Sep 2019
Externally publishedYes

Keywords

  • Conductivity
  • MOF
  • Oxygen evolution reaction
  • TiO
  • Ultraviolet light

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