We loaded silver (Ag), as a hydrogen (H₂)-evolution cocatalyst, selectively onto zinc rhodium oxide (ZnRh₂O₄ (ZRO)), as a H₂-evolution photocatalyst, with various amounts of the Ag cocatalyst in a heterojunction photocatalyst, Ag-inserted ZRO and bismuth vanadium oxide (Bi₄V₂O₁₁ (BVO), ZRO/Ag/BVO). The selective loading of the Ag cocatalyst was realized by a photodeposition method by utilizing the bandgap difference between ZRO (1.2 eV) and BVO (1.7 eV), and the amount of deposited Ag was controlled by the photodeposition time to generate Ag/ZRO/Ag/BVO with up to 4.0 wt% of Ag cocatalyst. All the prepared Ag/ZRO/Ag/BVO proceeded overall water splitting under red light irradiation at a wavelength of 700 nm, enhancing the stoichiometric evolutions of H₂ and O₂ from water. Also, the apparent quantum efficiency increased up to 1.1 wt% of Ag cocatalyst and then tended to saturate in the measurement range up to 4.0 wt%.

我们将作为氢（H ₂）演化助催化剂的银（Ag）选择性地负载到作为H ₂演化光催化剂的氧化锌铑（ZnRh ₂ O ₄（ZRO））上，并在其中添加了各种量的Ag助催化剂。异质结光催化剂，掺银的ZRO和氧化铋钒（Bi ₄ V ₂ O ₁₁（BVO），ZRO / Ag / BVO）。通过利用ZRO（1.2 eV）和BVO（1.7 eV）之间的带隙差通过光沉积法实现Ag助催化剂的选择性负载，并通过光沉积时间控制Ag的沉积量以生成Ag / ZRO / Ag / BVO与最多4.0 wt％的Ag助催化剂。所有制备的Ag / ZRO / Ag / BVO在700 nm波长的红光照射下进行了总水分解，从而增强了H ₂和O ₂从水中的化学计量释放。同样，表观量子效率增加到高达1.1重量％的Ag助催化剂，然后在高达4.0重量％的测量范围内趋于饱和。