Unlocking super low-temperature, high-efficiency oxidative desulfurization: The role of oxygen vacancy in Phosphomolybdate-Vanadium catalysts

The engineering of oxygen vacancies represents a strategic advancement in the pursuit of enhancing the electronic structure, surface characteristics, and the proliferation of active sites in oxygen-rich catalysts, thus significantly enhancing their catalytic performance. Herein, we have developed and synthesized an oxygen-deficient phosphomolybdate-vanadium (P 6 MoV) catalyst, utilizing phytic acid − a compound rich in phosphoric acid groups − as a cornerstone for facilitating catalytic oxidative desulfurization (ODS). Remarkably, this catalyst demonstrates a profound desulfurization efficiency, achieving a remarkable 99.55% efficiency in desulfurizing aromatic sulfides even at a low temperature of 0 °C. Additionally, its resilience is highlighted by impressive recyclability, maintaining performance for up to 20 cycles of use. Through meticulous design and innovative application of phytic acid, this study not only highlights the pivotal role of oxygen vacancy engineering in catalysis but also establishes new paradigms in the efficiency and sustainability of oxidative desulfurization processes.