The hetero-system CuFeO₂/ZnO was successfully used in the Cu²⁺ reduction under visible light irradiation; it was conducted with varying some important factors such as the initial Cu²⁺ concentration, mass ratio CuFeO₂/ZnO and light flux. The Cu²⁺ reduction obeys to a first-order kinetic with a half-life of 60 min. The regression in the reduction rate over time is due to the competitive hydrogen evolution. Indeed, the electrons are transferred to water via Cu²⁺ clusters. Also as application, the H₂ evolution is successfully achieved with an evolution rate of 3.42 µmol (g catalyst)⁻¹ min⁻¹ and a quantum yield of 0.5%. The hydrogen is facilitated through generated bifunctional hetero-system because of the low H₂ overvoltage on copper.

中文翻译：

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可见光下异体系CuFeO 2 / ZnO上的Cu 2+还原和H 2析出

CuFeO ₂ / ZnO异质体系已成功用于可见光辐射下的Cu ²⁺还原。它是通过改变一些重要因素来进行的，例如初始Cu ²⁺浓度，质量比CuFeO ₂ / ZnO和光通量。Cu ²⁺还原遵循一级动力学，半衰期为60分钟。随着时间的流逝，还原速率的下降归因于竞争性的氢气释放。实际上，电子是通过Cu ²⁺团簇转移到水中的。同样作为应用，成功实现了H ₂的析出，析出速率为3.42 µmol（g催化剂）^-1  min ^-1量子产率为0.5％。由于铜上H ₂的过低电压，氢通过生成的双官能异质体系得到促进。