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以市售P25(TiO_2)和g-C_3N_4为原料,以多孔氧化铝泡沫陶瓷为载体,进行了负载型光催化组件的设计与环境应用.运用浸渍提拉-热处理法制备负载P25/g-C_3N_4的泡沫陶瓷组件,对其微结构进行了表征测试,并将其应用于空气中NO的去除.结果表明,P25/g-C_3N_4在氧化铝泡沫陶瓷表面负载牢固,P25/g-C_3N_4禁带结构匹配有利于光生电荷的分离.研究了P25/g-C_3N_4比例对光催化性能的影响,当g-C_3N_4占P25的量为30%时,负载组件的光催化性能最佳,对NO的去除率达到79.6%.在5次循环反应后,负载型光催化剂表现出良好的稳定性.本研究为P25/g-C_3N_4复合光催化剂的空气净化应用提供了思路和技术基础.
The commercial P25 (TiO_2) and g-C_3N_4 as raw materials, with porous alumina ceramic foam as the carrier, the design and environmental applications of the supported photocatalytic modules were prepared by impregnation pulling - heat treatment of P25 / g-C_3N_4 , The microstructure of which was characterized and tested, and its application in the removal of NO in the air was also studied.The results showed that P25 / g-C_3N_4 was strongly supported on the surface of alumina foam ceramics and the structure of P25 / g-C_3N_4 forbidden band The effect of the ratio of P25 / g-C_3N_4 on the photocatalytic performance was studied. When the amount of P_ (25) g-C_3N_4 was 30%, the photocatalytic performance of the loaded component was the best, and the removal rate of NO Reached 79.6% .After 5 cycles of reaction, the supported photocatalyst showed good stability.The research provided the idea and technical basis for the air purification application of P25 / g-C_3N_4 composite photocatalyst.