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 journalArticlepeer-review

    28 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

    All Science Journal Classification (ASJC) codes

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

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