研究生学术报告预告登记(开题、中期、答辩)

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报告人: 王莉
学号: 1010207071
学院: 化工学院
报告类型: 其他学术报告
日期: 22 September 2012
时间: 2:30 PM
地点: 天津市天鹅湖度假村
导师: 何志敏
题目: Direct electrochemistry and electrocatalytic behavior of glucose oxidase by graphene-CdS nanocomposites modified electrode
内容提要:

The graphene-CdS (GR-CdS) nanocomposites were synthesized via a facilely noncovalent functionalization process. Then the CdS nanocrystals were in situ grown on the amino-graphene uniformly. The GR-CdS nanocomposites were characterized by UV–vis spectroscopy and SEM. A glucose biosensor was then fabricated based on the as-prepared GR-CdS nanocomposites by immobilizing glucose oxidase (GOD) in thin film of chitosan on a glassy carbon (GC) electrode. Direct electron transfer between GOD and the electrode was successfully achieved and the biosensor showed well electrocatalytic activity to glucose with a linear range from 0.5 to 7.5 mM and the sensitivity of 45.4 μA mM−1 cm−2. This work provided a simple and nondestructive functionalization strategy to fabricate graphene-based hybrid nanomaterials and it is expected that this composite film may find more potential applications in biosensors and biocatalysis.

图片:
登记人: 王莉
登记时间: Wednesday, 22 May 2013, 10:34 AM