磁场对光催化反应羟基自由基生成速率的影响  

Influence of Magnetic Field on the Formation Rate of Hydroxyl Radical in Photocatalysis

作　　者：张雯[1] 王绪绪[2] 林华香[2] 付贤智[2] 

机构地区：[1]福建师范大学化学与材料学院,福州350007 [2]福州大学化学与化工学院光催化研究所,福州350002

出　　处：《化学学报》2005年第18期1765-1768,共4页Acta Chimica Sinica

基　　金：国家自然科学基金(No.20133010);福建省自然科学基金(No.z0513010);福建省教育厅(Nos.JB04238;JB03011)资助项目.

摘　　要：以对苯二酸作为Pt/TiO2光催化反应所产生的羟基自由基(?OH)的捕获剂,采用荧光技术考察外加磁场对羟基自由基(?OH)生成速率的影响,结果表明,与常规的光催化反应相比,外加磁场可使样品表面羟基自由基的生成速率提高11.7%.The fluorescence technology was applied to study of the magnetic field effect on the rate of hydroxyl radical ·OH formation produced on the surface of Pt/TiO2 film in aerated NaOH solution, using terephthalic acid as the hydroxyl radical capturer. Compared with the normal photocatalytic reaction, the results showed that in the presence of external magnetic field the formation rate of surface hydroxyl radical was increased by 11.7%.

关 键 词：磁场效应 羟基自由基 PT/TIO2 光催化 光催化反应 生成速率 外加磁场 对苯二酸 荧光技术 

分 类 号：O644.1[理学—物理化学]