Synergistic Spatial Confining Effect and O Vacancy in WO₃ Hollow Sphere for Enhanced N₂ Reduction.

ABSTRACT: Visible-light-driven N₂ reduction into NH₃ in pure H₂O provides an energy-saving alternative to the Haber-Bosch process for ammonia synthesizing. However, the thermodynamic stability of N≡N and low water solubility of N₂ remain the key bottlenecks. Here, we propose a solution by developing a WO_3-x hollow sphere with oxygen vacancies. Experimental analysis reveals that the hollow sphere structure greatly promotes the enrichment of N₂ molecules in the inner cavity and facilitates the chemisorption of N₂ onto WO_3-x-HS. The outer layer's thin shell facilitates the photogenerated charge transfer and the full exposure of O vacancies as active sites. O vacancies exposed on the surface accelerate the activation

SUBMITTER: Xia Y 

PROVIDER: S-EPMC10745342 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature