Efficient Solar-Driven Nitrogen Fixation over Carbon–Tungstic-Acid Hybrids

Xiaoman Li, Wenzhong Wang, Dong Jiang, Songmei Sun, Ling Zhang, Xiang Sun

    Research output: Contribution to journalArticlepeer-review

    49 Citations (Scopus)

    Abstract

    Ammonia synthesis under mild conditions is of supreme interest. Photocatalytic nitrogen fixation with water at room temperature and atmospheric pressure is an intriguing strategy. However, the efficiency of this method has been far from satisfied for industrialization, mainly due to the sluggish cleavage of the N≡N bond. Herein, we report a carbon–tungstic-acid (WO3⋅H2O) hybrid for the co-optimization of N2activation as well as subsequent photoinduced protonation. Efficient ammonia evolution reached 205 μmol g−1h−1over this hybrid under simulated sunlight. Nitrogen temperature-programmed desorption revealed the decisive role of carbon in N2adsorption. Photoactive WO3⋅H2O guaranteed the supply of electrons and protons for subsequent protonation. The universality of carbon modification for enhancing the N2reduction was further verified over various photocatalysts, shedding light on future materials design for ideal solar energy utilization.

    Original languageEnglish
    Pages (from-to)13819-13822
    Number of pages4
    JournalChemistry - A European Journal
    Volume22
    Issue number39
    DOIs
    Publication statusPublished - Sep 19 2016

    All Science Journal Classification (ASJC) codes

    • Catalysis
    • Organic Chemistry

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