纳米氧化铽模拟氧化酶的制备、性能及其催化机理研究  

The Preparation, Properties and Catalytic Mechanism of Oxidase Mimics Based on Nano Terbium Oxide

作　　者：张晶晶[1] 蒋平平[1] 董玉明[1] 

机构地区：[1]江南大学化学与材料工程学院食品胶体与生物技术教育部重点实验室,江苏无锡214122

出　　处：《广东化工》2015年第6期1-2,5,共3页Guangdong Chemical Industry

基　　金：国家自然科学基金项目(No:20903048)

摘　　要：通过水热法合成了氧化铽纳米材料,并将合成的氧化铽纳米材料进行了TEM和XRD表征,同时研究了氧化铽对氧气氧化3,3’,5,5’-四甲基联苯二胺(TMB)发生显色反应的催化性能,并研究了类酶催化反应的动力学特征,得到米氏常数(Km)为0.123 m M和最大反应速率(Vm)为2.6×10-6 M·s-1。探究了氧化铽氧化TMB的催化机理,可能是由于氧化铽表面的晶格氧导致其催化氧气氧化TMB。Nano terbium oxide was synthesized by simple hydrothermal method were found to possess oxidase-like catalytic properties, and its structure was studied through TEM and XRD. The catalytic performance of Tb203 for the oxidation of 3,Y,5,5＇-tetramethylbenzidine （TMB） were researched by measuring the UV-visible absorbance of the oxidation product of TMB. The study also provided insight into catalytic mechanism.

关 键 词：氧化铽 水热法 模拟氧化酶 催化氧化 

分 类 号：O657.3[理学—分析化学]