Robust water oxidation catalysts using earth abundant metals are required as part of an overall scheme to convert sunlight into fuels. Here, we report the immobilization of [Mn₄^IVO₅(terpy)₄(H₂O)₂](ClO₄)₆ (terpy = 2,2′;6′,2′′-terpyridine), [Mn₄O₆(tacn)₄](ClO₄)₄ (tacn = 1,4,7-triazacyclononane), and manganese dioxide nanoparticles in Nafion on fluorine-doped tin oxide conducting glass electrodes. The electrodes are illuminated with white light in the presence of an applied potential and the resulting photocurrent is assigned to the oxidation of solvent water. Photodecomposition of the tetrameric complexes results in a material that is more active for light-driven electrooxidation of water. The reactivity, wavelength dependence, and stability of the compounds in Nafion under illumination are discussed.

作为将阳光转化为燃料的整体方案的一部分，需要使用富含地球的金属的坚固的水氧化催化剂。在这里，我们报告了 [Mn ₄ ^IV O ₅ (terpy) ₄ (H ₂ O) ₂ ](ClO ₄ ) ₆ (terpy = 2,2';6',2''-terpyridine), [Mn ₄ O ₆ (tacn) ₄ ](ClO ₄ ) ₄（tacn = 1,4,7-三氮杂环壬烷）和 Nafion 中的二氧化锰纳米粒子在掺氟氧化锡导电玻璃电极上。在施加电位的情况下用白光照射电极，产生的光电流被分配给溶剂水的氧化。四聚体复合物的光分解产生对光驱动的水电氧化更具活性的材料。讨论了 Nafion 中化合物在光照下的反应性、波长依赖性和稳定性。