Direct Electron Transfer of Myoglobin on CdO Nanoparticles Modified Glassy Carbon Electrode

作者：Mohammadi Nooshin^*; Ghanbari kakavandi Yousoof; Movassagh Ali Akbar; Nasereslami Somayeh; Mohseni Gholamreza; Hajiosseinlo Abbas; Sofimaryo Leila; Soleimani Reza; Akbari dastjerdi Hajar; Negahdary Masoud

来源：International Journal of Electrochemical Science, 2013, 8(5): 7345-7356.

DOI：10.1016/s1452-3981(23)14850-4

• Bioelectrochemistry
• Myoglobin
• Cadmium oxide (CdO) nanoparticles
• Glassy Carbon Electrode

In this study, direct electron transfer of myoglobin (Mb) on cadmium oxide (CdO) nanoparticles modified glassy carbon electrode (GCE) was investigated. Prepared CdO nanoparticles were studied by X-Ray diffraction (XRD) and UV-visible absorption methods. All electrochemical studies were performed by cyclic voltammetry (CV) and a potentiostat device. The cyclic voltammogram of Mb/CdO Nps/GCE showed a couple of stable redox and oxidative peaks at -470 and -370 mV at scan rate of 50 mVs(-1), respectively. The formal potential (E-o) of myoglobin was calculated as -(420 +/- 3) mV. Direct electrode transfer led to design a biosensor for determination of hydrogen peroxide (H2O2). The sensor sensitivity was found in the range of 50 to 1150 mu M of H2O2. Designed biosensor showed a good reproducibility and stability.

• 出版日期2013-5