文献类型：专利

英文题名：Magnetic composite photocatalyst used for photocatalytic degradation of organic pollutant comprises iron oxide, titanium dioxide, silane coupling agent having anionic exchange action and anionic cyclodextrin derivative

作者：LU J;ZHOU Y;GU X;ZHANG R;LIU J;CHEN X;WANG Z;ZHAO X

机构：[1]UNIV EAST CHINA SCI & TECHNOLOGY

申请号：CN103752348-A

申请日：2014-02-20

公开日：2014-04-30

语种：英文

收录：DERWENT

摘要：NOVELTY - Magnetic composite photocatalyst comprises iron oxide (Fe3O4), titanium dioxide (TiO2), silane coupling agent having an anionic exchange action, and anionic cyclodextrin derivative. USE - Magnetic composite photocatalyst used for photocatalytic degradation of organic pollutant. ADVANTAGE - The magnetic composite photocatalyst is easy to disperse and recover and has easy regeneration, simple preparation and mild reaction condition. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of magnetic composite photocatalyst comprising surface coating nano-Fe3O4 with TiO2 layer doped with silane coupling agent having anionic exchange action by adding 1.0 g nano-Fe3O4 magnetic particles into 500 ml of 95% ethanol to obtain solution A, adding 20 ml anhydrous ethanol, 5-10 ml acetylacetone and 5-10 ml butyl titanate to 10-100 mg silane coupling agent having anionic exchange action, mechanically stirring at 100-200 rad/minute for 5-10 minutes to obtain solution B, dropwise adding solution B into solution A at 1 drop/s, ultrasonic processing at 15-120 W for 5-10 minutes, reacting at 60-80 degrees C for 60-120 minutes, permanent magnet separating, rinsing with 500-1000 ml deionized water, and vacuum drying at 50-60 degrees C for 6-12 hours to obtain magnetic microspheres, adding 1.0 g magnetic microsphere into 100 ml of 0.1-1 g/L anionic cyclodextrin derivative solution, ultrasonic processing at 15-120 W for 5-10 minutes, mechanically stirring at 30-60 degrees C and 100-200 rad/minute for 30-120 minutes, permanent magnet separating, rinsing with 500-1000 ml deionized water and vacuum drying at 50-60 degrees C for 6-12 hours to obtain the composite photocatalyst.