Abstract
The design and synthesis of novel photocatalyst with self-temperature control function is an important topic in the field of advanced environmental functional materials.In this work,submicron-sized mag-netic phase change microcapsules composed of paraffin core and Fe3O4-loaded silica shell are prepared,on which the Bi2WO6 crystals is grown in situ through hydrothermal reaction to obtain novel magnetic phase-change-microcapsule-supported Bi2WO6 catalyst(MP@FS/BWO).The MP@FS/BWO has a paraffin encapsulation ratio of 57.1％,and the phase change enthalpy of 105.1 J/g in a temperature range of 50-60 ℃,which endows the MP@FS/BWO with a certain self-temperature regulation ability.MP@FS/BWO shows excellent catalytic performance in the decomposition of rhodamine B under the simulated sunlight irradiation.After the light source is turned off,it still has good catalytic ability by maintaining high tem-perature due to its temperature control function based on the phase transition process.The MP@FS/BWO can be easily recycled by magnetic separation and shows good structural stability and reusability.This work provides a new idea for the development of long-effect and energy-saving outdoor photocatalysts.
基金项目
国家自然科学基金(51973205)
国家自然科学基金(51773189)
中央高校基本科研业务费专项(WK9110000066)
中央高校基本科研业务费专项(WK3450000005)
中央高校基本科研业务费专项(WK3450000006)
NETL
NSTL
万方数据