fig14

Figure 14. Spatial coupling of plasmonic Au nanoparticles on enhanced charge separation (A) Spatially resolved potential mapping of a single Au nanoparticle on a TiO₂ surface^[250]. Copyright 2017, published by the American Chemical Society. (B) H₂ evolution rates of Zn_0.4Cd_0.6S with different Au configurations and corresponding schematics of surface-decorated, isolated, and chain-like Au assemblies^[114]. Copyright 2019, published by Nature; (C) Energy-band diagram and photocurrent responses of Au-sensitized NiO/TiO₂ heterojunction photoelectrodes with varying Au loadings^[257]. Copyright 2023, published by the Royal Society of Chemistry; (D) Bar graph of steady-state photocurrent density (J) for various Au/TiO₂ photoanode configurations^[258]. Copyright 2020, published by Oxford Academic. CB: Conduction band; VB: valance band; hν: energy of photon; ND: nanorod; NP: nano-particle.