A strategy for improving deactivation of catalytic combustion at low temperature via synergistic photocatalysis

Dong Jiang, Wenzhong Wang, Ling Zhang, Ruihao Qiu, Songmei Sun, Yali Zheng

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

For practical catalytic combustion in heterogeneous catalysis, non-noble metal oxides with excellent low temperature activity as well as performance sustainability still remain challenging. Herein, semiconductor photocatalysis was introduced to address the problems. With greatly enhanced spectral response and low temperature reducibility, MnOx-CeO2 mixed oxide achieved convincing photo/thermo-catalysis synergy in formaldehyde abatement. This synergy is promising for utilizing infrared (IR) energy from sunlight and idle heat from daily illuminants. Moreover, the exhausted material after prolonged dark reaction presented inspiring self-remediation under in situ light irradiation. Catalytic cycles were thoroughly studied, unveiling the underlying mechanism based on photo-induced remediation. Roles of high valence metal ions, reaction intermediates and surface hydroxyls (OH) have been in-depth and newly cognized. Given the day and night alternations in nature, our results may be instructive in designing reliable catalysts for efficient and sustainable catalytic combustion.

Original languageEnglish
Pages (from-to)399-407
Number of pages9
JournalApplied Catalysis B: Environmental
Volume165
DOIs
Publication statusPublished - Apr 1 2015
Externally publishedYes

Fingerprint

Photocatalysis
catalysis
Remediation
Oxides
Catalysis
remediation
combustion
Reaction intermediates
formaldehyde
Formaldehyde
Hydroxyl Radical
Metal ions
Sustainable development
irradiation
Metals
catalyst
sustainability
oxide
Irradiation
Semiconductor materials

All Science Journal Classification (ASJC) codes

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

Cite this

A strategy for improving deactivation of catalytic combustion at low temperature via synergistic photocatalysis. / Jiang, Dong; Wang, Wenzhong; Zhang, Ling; Qiu, Ruihao; Sun, Songmei; Zheng, Yali.

In: Applied Catalysis B: Environmental, Vol. 165, 01.04.2015, p. 399-407.

Research output: Contribution to journalArticle

Jiang, Dong ; Wang, Wenzhong ; Zhang, Ling ; Qiu, Ruihao ; Sun, Songmei ; Zheng, Yali. / A strategy for improving deactivation of catalytic combustion at low temperature via synergistic photocatalysis. In: Applied Catalysis B: Environmental. 2015 ; Vol. 165. pp. 399-407.
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