Keggin‐type polyoxometalate anions [XM₁₂O₄₀]ⁿ⁻ are versatile, as their applications in interdisciplinary areas show. The Keggin anion [CoW₁₂O₄₀]⁶⁻ turns into an efficient and robust electrocatalyst upon its confinement in the well‐defined void space of ZIF‐8, a metal–organic framework (MOF). [H₆CoW₁₂O₄₀]@ZIF‐8 is so stable to water oxidation that it retains its initial activity even after 1000 catalytic cycles. The catalyst has a turnover frequency (TOF) of 10.8 mol O₂(mol Co)⁻¹ s⁻¹, one of the highest TOFs for electrocatalytic oxygen evolution at neutral pH. Controlled experiments rule out the chances of formation and participation of CoO_x in this electrocatalyic water oxidation.

中文翻译：

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Keggin多金属氧酸盐在中性pH值下显示出水氧化活性：POM @ ZIF-8，一种高效且坚固的电催化剂

Keggin型多金属氧酸盐阴离子[XM ₁₂ ø ₄₀ ] ^{ñ -}是通用的，因为它们的交叉学科中的应用表明。Keggin阴离子[CoW ₁₂ O ₄₀ ] ⁶⁻限制在金属有机骨架（MOF）的ZIF-8的明确定义的空隙空间中，因此成为一种高效且坚固的电催化剂。[H ₆ CoW ₁₂ O ₄₀ ] @ ZIF-8对水的氧化非常稳定，即使在1000次催化循环后仍保持其初始活性。催化剂的周转频率（TOF）为10.8 mol O ₂（mol Co）^-1  s ^-1，这是在中性pH下产生电催化氧的最高TOF之一。对照实验排除了CoO _x形成和参与这种电催化水氧化的机会。