Monolithic Metal Organic Framework TiO2 Crystal Glass Composites for Photocatalytic Micropollutant Removal

Abstract

In this work, we report the design and fabrication of a monolithic TiO₂–MOF glass composite with significantly enhanced photocatalytic performance for micropollutant removal under visible light. Through high-temperature sintering, the initially discrete powder mixture is consolidated into a mechanically robust monolith, offering improved handling and long-term structural stability. This thermal treatment promotes the formation of intimate interfacial contacts between crystalline TiO₂ and the amorphous MOF glass, effectively enhancing charge separation and visible light absorption. Through an in-depth study of the interface structure and chemical properties with advanced characterization technologies, the study underscores the critical role of interfacial engineering in tuning the functional properties of monolithic photocatalysts. Furthermore, it establishes a generalizable strategy for the design and integration of monolithic photocatalytic systems, with broader implications for the development of advanced materials in environmental remediation and optoelectronic energy applications.