Bottom-up formation of gold truncated pyramids smaller than 10 nm on SrTiO3 nanocubes: an application for plasmonic water oxidation

Abstract

An atomically commensurate interface gives rise to Au truncated pyramids < 10 nm on single-crystalline SrTiO₃ nanocubes (NCs) in a simple deposition–precipitation process without a surface modifier, and the resulting hybrid nanocrystals exhibit a high level of photocatalytic activity for a plasmonic oxygen evolution reaction at light wavelengths (λ_ex) ≤ 1200 nm.