Heterostructured V₂O₅/FeVO₄ for enhanced liquid-phase epoxidation of cyclooctene

Efficient cyclooctene epoxidation process under mild reaction conditions highly relies on the rational design and synthesis of high-performance heterogeneous catalysts. Herein, we report the facile one-pot synthesis of V₂O₅/FeVO₄ heterostructures featured with heterointerfaces for the boosted epoxidation of cyclooctene. The intensive interfacial electronic interaction between the V₂O₅ and FeVO₄ phases is versatile in the modulation of coordination microenvironment and formation of abundant oxygen vacancies, contributing to the performance enhancement. Under the optimal reaction conditions, a high yield of 87.0% can be achieved with the cyclooctene conversion of 96.5% (initial reaction rate of 55.1 mmol g_cat^-1 h^-1) and cyclooctene oxide selectivity of 90.2%. Additionally, the V₂O₅/FeVO₄ catalyst is stable and recyclable, endowing it a promising prospect for practical applications. This study demonstrates that the application of interface engineering strategy can be an appealing avenue towards the development of high-performance catalysts for epoxidation of cyclooctene and beyond.