High-performance In2O3@PANI core@shell architectures with ultralong charge carriers lifetime for photocatalytic degradation of gaseous 1,2-dichlorobenzene

Fei Zhang, Xinyong Li, Qidong Zhao, Guohua Chen, Qianzhe Zhang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

26 Citations (Scopus)

Abstract

In2O3-based nanocomposites with ultralong lifetime charge carriers were successfully prepared by deposition of a thin polyaniline (PANI) shell on the In2O3 monodispersed nanospheres and used as a visible-light responsive catalyst for the decomposition of gaseous 1,2-dichlorobenzene. The effect of PANI shell modification on the micro-structures, optical properties, as well as transfer dynamic behaviors and lifetime of charge carriers were investigated, respectively. Meanwhile, the catalytic oxidation process and the corresponding intermediates of 1,2-dichlorobenzene were investigated by in situ FTIR spectroscopy. More importantly, the optical absorption and the time-resolved photoluminescence investigation jointly corroborated that the enhancement of photocatalytic performance by modification of PANI shell was highly correlated with the substantially prolonged lifetime of charge carriers and simultaneously narrowing bandgap. Thus, it resulted in improved charge separation efficiency and visible-light absorption capability, respectively. This study provides an interesting insight and meaningful guideline for designing long-lifetime In2O3-based heterojunctions via conductive polymer coating.

Original languageEnglish
Article number118278
JournalApplied Catalysis B: Environmental
Volume263
DOIs
Publication statusPublished - Apr 2020

Keywords

  • 1,2-dichlorobenzene
  • Charge carriers lifetime
  • Core@shell structure
  • In situ FTIR
  • InO-based photocatalyst

ASJC Scopus subject areas

  • Catalysis
  • Environmental Science(all)
  • Process Chemistry and Technology

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