以偏钛酸为原料在室温离子液体中水热制备二氧(4)

32

稀 有 金 属

14960.[8]

31卷

3.光催化测试表明所制备的二氧化钛光催化剂在可见光辐照下具有一定的光催化活性;光催化降解亚甲基蓝的能力优于商业品P-25。参考文献:

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PreparationofTiO2PhotocatalystbyHydrothermalMethodinRoomTemperatureIonicLiquidUsingMetatitanicAcid

WangQin,YangQinglin,CheYuping,GuoLin,DengYuan,JiTianhao(SchoolofMaterialsScienceandEngineering,BeijingUniversityofAeronauticsandAstronautics,Beijing100083,China)

Abstract:Anatasenano-titaniumdioxidewaspreparedbyhydrothermalmethodatthetemperatureof160 in1-allyl,3-methylimidazoliumchloride([Amim][Cl])roomtemperatureionicliquid,usingmetatitanicacidasrawmaterials.Thephase,morphology,opticalpropertiesandphotocatalyticactivityofthesampleswereanalyzedbyX-raydiffraction(XRD),transmissionelectronicm-icroscopy(TEM),andUV-Visiblespectrometer(UV-Vis),respectively.Theresultsshowthattheaveraged-iameteroftheparticlesisabout18.4nmandthemor-phologyisellipsoid-like.Theas-preparedsamplesshowcertainabsorptioninthevisiblelightregionandphotocat-alyticactivityundervisiblelightirradiation,andshowhigherphotocatalyticactivitiesthancommercialproductP-25forphotocatalyticoxidativedegradationofthemeth-ylenebluethroughphotocatalytictest.

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Keywords:nanometertitaniumdioxide;photocatalyst;roomtemperatureionicliquid;hydrothermalmethod;metatitanicacid