Water oxidation is the bottleneck of the water splitting process. A novel highly efficient and stable for many cycles heterogeneous Cu-contained catalysts supported on MFI-type zeolite (1% Cu-ZSM-5) for water oxidation were prepared. Oxo/hydroxo complexes of copper (II) were stabilized in the zeolite channels via polycondensation. The analysis of the electron states of copper in the Cu-containing zeolite-based catalysts using EPR and UV–vis DR techniques revealed that the catalytic efficiency of Cu(II) state in zeolite grew up in the series: [Cu(NH₃)₄]²⁺ < isolated [Cu(H₂O)₆]²⁺ << Cu(OH)_x-like and CuO_x-like nanoclusters in mesopores << CuO_x-like and Cu(OH)_x-like complexes in channels < [Cu₂(OH)₂]²⁺ complexes in channels. The catalyst containing [Cu₂(OH)₂]²⁺ complexes in channels provided the yields of oxygen as high as 60 and 64 % of the stoichiometric quantity at pH 9.2–10.0 in the dark reaction with one-electron oxidant Ru(bpy)₃³⁺. Nevertheless, Cu(OH)_x-like and [Cu₂(OH)₂]²⁺ complexes stabilized in the ZSM-5 channels decomposed easily under the conditions of the photocatalytic reaction. At the same time, the oxygen yield reached 92 % in photocatalytic system Ru(bpy)₃²⁺/S₂O₈²⁻ in the presence of 1%Cu-ZSM-5 containing CuO_x-like complexes stabilized in the channels. The adsorption of Ru(bpy)₃²⁺ on the surface of 1%Cu-ZSM-5 containing CuO_x-like complexes provided the increase of the reaction rate in 1.6 times and achieved the oxygen yield up to 98 % to stoichiometry. This indicated the strong effect of concurrent processes of Ru(bpy)₃²⁺ and Ru(bpy)₃³⁺ adsorption/desorption at the catalyst active site on the rate of oxygen evolution.

水的氧化是水分解过程的瓶颈。制备了一种新型的高效且稳定的多周期载于MFI型沸石（1％Cu-ZSM-5）上的多相含铜催化剂，用于水氧化。铜（II）的氧/氢氧配合物通过缩聚作用稳定在沸石通道中。使用EPR和UV-vis DR技术对含Cu沸石基催化剂中铜的电子态进行分析后发现，沸石中Cu（II）态的催化效率按以下系列增长：[Cu（NH ₃）₄ ] ²⁺ <分离出的[Cu（H ₂ O）₆ ] ²⁺ << <<类Cu（OH）_x和CuO _x孔中的类铜纳米簇<<通道中的[<Cu ₂（OH）₂ ] ²⁺络合物<< CuO _x样和Cu（OH）_x络合物。在通道中含有[Cu ₂（OH）₂ ] ²⁺络合物的催化剂在黑暗中与单电子氧化剂Ru（bpy）反应时，在pH 9.2-10.0时，氧的收率高达化学计量的60％和64％₃ ³⁺。然而，类似Cu（OH）_x和[Cu ₂（OH）₂ ] ²⁺在光催化反应条件下，稳定在ZSM-5通道中的配合物容易分解。同时，在通道中稳定的含有1％Cu-ZSM-5的含CuO _x状络合物的存在下，光催化体系Ru（bpy）₃ ²⁺ / S ₂ O ₈ ^2-中的氧收率达到92％。Ru（bpy）₃ ²⁺在含1％Cu-ZSM-5的类似CuO _x的配合物表面上的吸附使反应速率提高了1.6倍，并且达到化学计量比时，氧的产率高达98％。这表明Ru（bpy）₃ ²⁺和Ru（bpy）₃ ³⁺的并发过程的强大影响 催化剂在活性位上的吸附/解吸对氧气释放速率的影响。