Synergistic Metal-Support Interactions in Au/GaN Catalysts for Photoelectrochemical Nitrate Reduction to Ammonia.

ABSTRACT: Metal-support interactions are crucial in the electrochemical synthesis of ammonia (NH₃) from nitrate (NO₃ ^-) reduction reaction, enabling efficient NH₃ production under mild conditions. However, the complexity of the reaction pathways often limits efficiency. Here, a photoelectrochemical system composed of gold (Au) nanoclusters supported on gallium nitride (GaN) nanowires is introduced, grown on a n⁺-p Si wafer, for selective reduction of NO₃ ^- to NH₃ under solar illumination. NO₃ ^- ions are preferentially adsorbed and reduced to nitrite (NO₂ ^-) on the GaN nanowires, which then transfer to adjacent Au nanoclusters to complete the NH₃ synthesis. Th

SUBMITTER: Dong WJ 

PROVIDER: S-EPMC11921999 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature