Design of mesostructured H3PW_(12)O_(40)-titania materials with controllable structural orderings and pore geometries and their simulated sunlight photocatalytic activity towards diethyl phthalate degradation

摘要

A series of mesostructured H3PW_(12)O_(40)-titania materials with two-dimensional hexagonal, three-dimensional cubic, and three-dimensional interconnected sponge-like pore geometries were developed by using a single step nonionic-surfactant-templating strategy combined with evaporation-induced self-assembly (EISA) or hydrothermal treatment technique. The mesostructure, morphology, porosity, optical absorption property as well as composition and structure of as-prepared materials were well-characterized. Subsequently, the materials were successfully applied to the degradation of an aqueous diethyl phthalate (a kind of endocrine disrupting chemical) under the simulated sunlight irradiation at λ >320nm and λ >400nm region, respectively, and special attention was paid to investigate the influences of the structural orderings, pore geometries, H3 PW_(12)O_(40) loadings as well as calcination temperature on the photocatalytic performance of the H3PW_(12)O_(40)-titania materials to the target reaction.