fig3

Figure 3. Gold nanoparticles-enhanced photocatalytic hydrogen production. (A and B) TEM images of single Au-tipped ZnSe and double Au-tipped ZnSe nanorods; (C) Photocatalytic mechanism of Au-ZnSe hybrid nanorods for hydrogen production; (D) Comparison of hydrogen generation rates of various samples using methanol as the sacrificial hole scavenger. These four figures are quoted with permission from Chen et al. Copyright (2019) Wiley-VCH GmbH^[44]; (E) Schematic diagram of cross-section of the Au/TiO₂ nanocrystal arrays; (F) The cross-section near-fields for Au-TiO₂ nanocrystal arrays partially immersed in SiO₂ simulated by FDTD, λ = 540 nm; (G) Amount of hydrogen generated over Au/TiO₂ arrays with different coating thicknesses of TiO₂ compared with bare TiO₂ thin films. These three figures are quoted with permission from Wu et al. Copyright (2016) Elsevier Ltd^[66]; (H) TEM and (I) HRTEM images of Au@Cu₇S₄. These figures are quoted with permission from Tsao et al. Copyright (2024) Springer Nature^[34]. FDTD: Finite-difference time-domain; HRTEM: high-resolution transmission electron microscopy; TEM: transmission electron microscopy; NPs: nanoparticles; NCAs: nanocrystal arrays.