Electrocatalysis of oxygen at hemoglobin-Au colloid-1,4-benzenedimethanethiol modified electrode |
| |
Authors: | Wang Guang-feng Deng Xiang-hui Zhang Wen-zhi Fang Bin |
| |
Affiliation: | School of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, PR China. guangfeng80wang@yahoo.com.cn |
| |
Abstract: | A novel renewable O2 sensor based on the direct electron transfer of hemoglobin (Hb) is proposed. Hb was immobilized on a gold nanoparticles (GNP) associated with a 1,4-benzenedimethanethiol (BDT) monolayer which were modified the electrode. The direct electrochemistry of Hb was investigated by electrochemical methods and cyclic voltammetric showing a pair of redox peaks of Hb. The high efficiency of the Hb/GNP/BDT modified gold electrode towards the catalytic electro-reduction of oxygen has been observed and the potential application of Hb/GNP/BDT modified gold electrode as biosensors to monitor O2 is proposed. The electrocatalytic response showed a linear dependence on the O2 concentration ranging from 2.0 to 40.0 micromol/L. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|