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

64 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
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Organic Chemistry

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