caa a22 4500 445880589 CHVBK 20180317145541.0 cr unu---uuuuu 170323e20110601xx s 000 0 eng 10.1007/s00604-011-0554-y doi (NATIONALLICENCE)springer-10.1007/s00604-011-0554-y Direct electron transfer and biocatalytic activity of iron storage protein molecules immobilized on electrodeposited cobalt oxide nanoparticles [Elektronische Daten] [Abdolmajid Moghaddam, Mohamad Esmaieli, Abbas Khodadadi, Yadolah Ganjkhanlou, Darya Asheghali] Ferritin was immobilized on a glassy carbon electrode with electrodeposited cobalt oxide nanoparticles, and its direct electron transfer behavior was studied. It exhibits a pair of redox peaks due to direct electron transfer between ferritin and the nanoparticles. Electrochemical parameters including the formal potential (E0′), the charge transfer coefficient (α), and the apparent heterogeneous electron transfer rate constant (ks) were determined. The sensor displays excellent biocatalytic activity in terms of reduction of hydrogen peroxide, and this was applied to electrochemical sensing of hydrogen peroxide. Figure In this work, cobalt oxide nanoparticles were electrodeposited on the surface of an electrode for immobilization of ferritin molecules to prepare hydrogen peroxide biosensor. The immobilized protein molecules still preserve their biological activities and have great capability in catalyzing the reduction of hydrogen peroxide. Springer-Verlag, 2011 Biosensor nationallicence Ferritin nationallicence Nanoparticles nationallicence Electrochemistry nationallicence Moghaddam Abdolmajid Nanoscience and Nanotechnology Research Center, University of Tehran, P.O. Box1417763111, Tehran, Iran aut Esmaieli Mohamad School of Chemical Engineering, College of Engineering, University of Tehran, P.O. Box11155/4563, Tehran, Iran aut Khodadadi Abbas School of Chemical Engineering, College of Engineering, University of Tehran, P.O. Box11155/4563, Tehran, Iran aut Ganjkhanlou Yadolah Nanoscience and Nanotechnology Research Center, University of Tehran, P.O. Box1417763111, Tehran, Iran aut Asheghali Darya Nanoscience and Nanotechnology Research Center, University of Tehran, P.O. Box1417763111, Tehran, Iran aut Microchimica Acta Springer Vienna 173/3-4(2011-06-01), 317-322 0026-3672 173:3-4<317 2011 173 604 https://doi.org/10.1007/s00604-011-0554-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00604-011-0554-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Moghaddam Abdolmajid Nanoscience and Nanotechnology Research Center, University of Tehran, P.O. Box1417763111, Tehran, Iran aut NATIONALLICENCE 700 1- Esmaieli Mohamad School of Chemical Engineering, College of Engineering, University of Tehran, P.O. Box11155/4563, Tehran, Iran aut NATIONALLICENCE 700 1- Khodadadi Abbas School of Chemical Engineering, College of Engineering, University of Tehran, P.O. Box11155/4563, Tehran, Iran aut NATIONALLICENCE 700 1- Ganjkhanlou Yadolah Nanoscience and Nanotechnology Research Center, University of Tehran, P.O. Box1417763111, Tehran, Iran aut NATIONALLICENCE 700 1- Asheghali Darya Nanoscience and Nanotechnology Research Center, University of Tehran, P.O. Box1417763111, Tehran, Iran aut NATIONALLICENCE 773 0- Microchimica Acta Springer Vienna 173/3-4(2011-06-01), 317-322 0026-3672 173:3-4<317 2011 173 604 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer