In this study, we prepare a highly efficient BiVO₄ photoanode co-catalyzed with an ultrathin layer of N, S co-doped FeCo-Metal Organic Frameworks (MOFs) for photoelectrochemical water splitting. The introduction of N and S into FeCo-MOFs enhances electron and mass transfer, exposing more catalytic active sites and significantly improving the catalytic performance of N, S co-doped FeCo-based MOFs in water oxidation. The optimized BiVO₄/NS-FeCo-MOFs photoanode exhibits impressive results, with a photocurrent density of 5.23 mA cm⁻² at 1.23 V vs. Reversible Hydrogen Electrode (RHE) and an incident photon-to-charge conversion efficiency (IPCE) of 74.4 % at 450 nm in a 0.1 M phosphate buffered solution (pH = 7). These values are 4.84 times and 6.2 times higher than those of the original BiVO₄ photoanode, respectively. Furthermore, the optimized BiVO₄/NS-FeCo-MOFs photoanode demonstrates exceptional long-term stability, maintaining 96 % of the initial current after five hours.

在这项研究中，我们制备了一种高效的BiVO ₄光阳极，与超薄层N、S共掺杂FeCo金属有机框架（MOF）共同催化，用于光电化学水分解。在FeCo-MOFs中引入N和S增强了电子和质量传递，暴露出更多的催化活性位点，显着提高了N、S共掺杂FeCo基MOFs在水氧化中的催化性能。优化的BiVO ₄ /NS-FeCo-MOFs光阳极表现出令人印象深刻的结果，在1.23 V vs s下的光电​​流密度为5.23 mA cm ^-2 。可逆氢电极 (RHE)，在 0.1 M 磷酸盐缓冲溶液 (pH = 7) 中，450 nm 处的入射光子到电荷转换效率 (IPCE) 为 74.4 %。这些值分别比原始BiVO ₄光电阳极高4.84倍和6.2倍。此外，优化的 BiVO ₄ /NS-FeCo-MOFs 光阳极表现出卓越的长期稳定性，五小时后仍保持初始电流的 96%。