Direct electrochemistry of cytochrome c on electrodeposited nickel oxide nanoparticles

Moghaddam, Abdolmajid Bayandori; Ganjali, Mohammad Reza; Dinarvand, Rassoul; Razavi, Taherehsadat; Saboury, Ali Akbar; Moosavi‐Movahedi, Ali Akbar; Norouzi, Parviz

doi:10.1016/j.jelechem.2007.11.011

Cited by 30 publications

(8 citation statements)

References 67 publications

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“…These results indicate that the pair of peaks is characteristic of the Fe(III)/ Fe(II) redox couple for the heme protein. The anodic peak potential (E pa ) and the cathodic peak potential (E pc ) are located at À0.047 V and À0.157 V, respectively, with a formal potential (E o 0 , defined as the average of E pa and E pa ) at À0.102 V, which is close to the value reported in literature of cytochrome c on electrodeposited nickel oxide nanoparticles [49] and Cyt c at three-dimensional poly (orthanilic acid) nano-networks coated platinum electrode [50]. The large separation between the anodic and the cathodic peak potentials suggests that the electrochemical process of Cyt c confined on the ion implantation-modified electrode is quasi-reversible.…”

Section: Characterizations Of the Cyt C/aunps/nh 2 /Ito Electrode Witsupporting

confidence: 84%

Direct electrochemistry of cytochrome c at a novel gold nanoparticles-attached ions implantation-modified indium tin oxide electrode

Xia

Liu

et al. 2009

Journal of Electroanalytical Chemistry

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Section: Characterizations Of the Cyt C/aunps/nh 2 /Ito Electrode Witsupporting

confidence: 84%

Direct electrochemistry of cytochrome c at a novel gold nanoparticles-attached ions implantation-modified indium tin oxide electrode

Xia

Liu

et al. 2009

Journal of Electroanalytical Chemistry

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“…Cobalt ferrite (mixed cobalt iron oxide) NP formation was studied in the presence of a synthetic polypeptide, and coating this material with histidine induced cellular biocompatibility [30,31]. NiO can form part of electrochemical devices, in which Ni ions are also used as an agent for chelating biomolecules [32,33]. A nonenzymatic glucose sensor based on a nickel(II)oxide/ordered mesoporous carbon-modified glassy carbon electrode has also been recently reported [34].…”

Section: Introductionmentioning

confidence: 99%

Non-Covalent Synthesis of Metal Oxide Nanoparticle–Heparin Hybrid Systems: A New Approach to Bioactive Nanoparticles

Vismara

Valerio

Coletti

et al. 2013

IJMS

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Heparin has been conjugated to Fe3O4, Co3O4, and NiO nanoparticles (NPs) through electrostatic interactions, producing colloidal suspensions of hybrid metal oxide heparin NPs that are stable in water. Negative zeta potentials and retention of heparin’s ability to capture toluidine blue indicate that heparin’s negative charges are exposed on the surface of the coated NPs. IR results confirmed the formation of nanohybrids as did NMR experiments, which were also interpreted on the basis of toluidine blue tests. Transmission electron microscopy results revealed that the heparin coating does not modify the shape or dimension of the NPs. Dynamic light scattering and negative zeta potential measurements confirmed that heparin surface functionalisation is an effective strategy to prevent NP aggregation.

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“….0) at different scan rates from 50 mV s -1 to 3000 mV s -1 . In this range of scan rate, both cathodic and anodic peak currents are found to be proportional linearly to the scan rate, which corresponds to an adsorption-controlled process of electrode [25]. In addition, from Fig.…”

Section: Effect Of Sio2 Nps On the Electron Transfer Of Cyt C Adsorbementioning

confidence: 61%

Surface-enhanced infrared absorption spectroscopy and electrochemistry reveal the impact of nanoparticles on the function of protein immobilized on mimic biointerface

Zhang

Zeng

Liu

et al. 2016

Electrochimica Acta

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Surface-enhanced infrared absorption spectroscopy and electrochemistry reveal the impact of nanoparticles on the function of protein immobilized on mimic biointerface, Electrochimica Acta http://dx. AbstractStudy of the interactions between engineered nanoparticles and biomolecules plays an important role in understanding nano-bio effect. However, most of studies focus on the interaction of protein with nanoparticle in bulk phase, the impact of nanoparticle on the function of protein immobilized on the biological interface has been ignored for a long time. In this paper, we study the effect of SiO2 NPs on electron transfer function of cytochrome c (cyt c) adsorbed onto the 11-mercaptoundecanoic acid (MUA) self-assembled monolayer (SAM) by surface-enhanced infrared absorption spectroscopy (SEIRAS) combined with electrochemistry. Our results disclose that instead of inhibiting the electron transfer, exposure of SiO2 NPs enhances the redox reversibility, electron transfer rate, and catalytic performance of adsorbed cyt c, but induces a slight negative shift in the formal potential of the adsorbed cyt c. Interaction of SiO2 NPs slightly induces the structural changes of the β-sheet in the oxidized form and the change of microenvironment surrounding them, which could further change the microenvironment and the orientation of heme, facilitating the hydration of cyt c at the oxidized state. It could be the enhanced hydration of cyt c (Fe 3+ ) and a smaller change in the total hydration from reduced to oxidized state that results in the slight negative shift in the formal potential and promotes the electron transfer capability. Besides, cyt c's slight conformational change and the disturbance to the microenvironment of heme resulting from the adsorption of SiO2 NPs could also be one of the reason that leads to the enhanced catalytic capability towards the reduction of H2O2.

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Direct electrochemistry of cytochrome c on electrodeposited nickel oxide nanoparticles

Cited by 30 publications

References 67 publications

Direct electrochemistry of cytochrome c at a novel gold nanoparticles-attached ions implantation-modified indium tin oxide electrode

Direct electrochemistry of cytochrome c at a novel gold nanoparticles-attached ions implantation-modified indium tin oxide electrode

Non-Covalent Synthesis of Metal Oxide Nanoparticle–Heparin Hybrid Systems: A New Approach to Bioactive Nanoparticles

Surface-enhanced infrared absorption spectroscopy and electrochemistry reveal the impact of nanoparticles on the function of protein immobilized on mimic biointerface

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