Fe(Ⅲ)-5-Br-PADAP络合物光化学还原反应的研究  

Study on the Photoreduction of Fe(Ⅲ)-2-(5-Bromo-2-Pyridylazo)-5-Diethylaminophenol Complex

作　　者：吴小华[1] 缪吉根[1] 陈建荣[1] 

机构地区：[1]浙江师范大学化学与生命科学学院,浙江金华321004

出　　处：《感光科学与光化学》2006年第4期270-275,共6页Photographic Science and Photochemistry

基　　金：浙江省分析测试基金项目(98061)

摘　　要：研究了溶液酸度、光强度、有机酸及其浓度对Fe(Ⅲ)-5-Br-PADAP络合物光化学还原反应的影响,并对该光化学还原反应的机理作了初步探讨.结果表明,在pH为5.5的HAc-NaAc缓冲溶液中,Fe(Ⅲ)-5-Br-PADAP络合物的光化学还原反应速度较快;光强度增加,该光化学还原反应速度加快;甲酸等有机酸能加速该光化学还原反应;乙二酸、丙二酸能明显抑制该光化学还原反应;能促进反应的有机酸浓度增加,该光化学还原反应的速度加快.The effects of solution acidity, light intensity, the presence of specific organic acids and their concentration on the photoreduetion of Fe（ Ⅲ）-5-Br-PADAP complex were studied. Preliminary investigation was carried out to probe into the reaction mechanism. It was found that Fe（Ⅲ）-5- Br-PADAP ocxnplex underwent photoreduction fast at pH 5.5 in HAc-NaAc buffer solution; intensifying the illumination would speed up the reaction; the presence of certain organic adds such as formic add could promote the photoreduetion while oxalic acid and malonie acid prohibited the reaction markedly; increasing the concentration of organic acids that promote the reaction could accelerate the photoreduction.

关 键 词：铁(Ⅲ) 2-(5-溴-2-吡啶偶氮)-5-二乙氨基苯酚 光化学还原反应 

分 类 号：O641.4[理学—物理化学]