An organic-inorganic hybrid polyoxometalate (POM) [Cu^I(phen)₂]₄[PMo^VI₈V^IV₆O₄₂{Cu^I(phen)}₂]•H₅O₂ (CuPMoV) was explored as heterogeneous Fenton-like catalyst for methylene blue (MB) degradation in the absence/presence of visible light at neutral pH. CuPMoV was characterized by XRD, SEM, FT-IR and UV–vis DRS techniques. The effect of initial pH, the concentrations of H₂O₂ and dye, and CuPMoV dosage on the degradation was evaluated. The possible mechanism for the Fenton-like/photo-Fenton-like was proposed. Under the optimum conditions, the MB degradation rates were 85.3 % (Fenton-like reaction) and 95.2 % (photo-Fenton-like reaction) in 12 min, respectively. CuPMoV also exhibited excellent catalytic performance for MB reduction in the presence of NaBH₄, with the reduction rate of 98.6 % in 90 s. The pseudo-first-order rate constant of the reduction was estimated as 0.0246 s⁻¹. The high reusability and stability of CuPMoV enabled it to undergo five cycles of usage without significant loss of catalytic activity. The multi-metal composition of CuPMoV and the bicapped Keggin unit were the root of its excellent catalytic activities. CuPMoV may be a potential candidate for the practical treatment of MB contaminated wastewater via oxidation or reduction.

有机-无机杂化多金属氧酸盐 (POM) [Cu ^I (phen) ₂ ] ₄ [PMo ^VI ₈ V ^IV ₆ O ₄₂ {Cu ^I (phen)} ₂ ]·H ₅ O ₂ ( CuPMoV ) 被探索为异质芬顿-类似于在中性 pH 值下，在不存在/存在可见光的情况下亚甲基蓝 (MB) 降解的催化剂。CuPMoV通过 XRD、SEM、FT-IR 和 UV-vis DRS 技术进行了表征。_{评估了初始pH、H 2} O _2和染料的浓度以及CuPMoV剂量对降解的影响。提出了类芬顿/类光芬顿的可能机制。在最佳条件下，12 min内MB降解率分别为85.3%（类Fenton反应）和95.2%（类光Fenton反应）。CuPMoV在NaBH ₄存在下也表现出优异的MB还原催化性能，90秒内还原率为98.6%。还原的伪一级速率常数估计为0.0246 s ^-1。CuPMoV的高可重复使用性和稳定性使其能够经历五个使用周期而不会显着损失催化活性。CuPMoV的多金属组成和双帽 Keggin 单元是其优异催化活性的根源。CuPMoV可能是通过氧化或还原实际处理 MB 污染废水的潜在候选者。