A new amperometric H2O2 biosensor based on nanocomposite films of chitosan–MWNTs, hemoglobin, and silver nanoparticles

Li, Yancai; Li, Yuanjun; Yang, Yong

doi:10.1007/s10008-011-1503-8

Cited by 32 publications

(10 citation statements)

References 46 publications

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“…31 Notably, for Cyt c/CL_PC/DT/Au, in the range of low scan rates of 5-75 mV/s, both cathodic and anodic peak currents are 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 proportional linearly to the square root of the scan rates, which corresponds to a diffusioncontrolled process. which corresponds to an adsorption-controlled process.…”

Section: Electrochemistry Of Cyt C Adsorbed Onto Cl-containing Lipid mentioning

confidence: 99%

Label-Free Surface-Enhanced Infrared Spectroelectrochemistry Studies the Interaction of Cytochrome c with Cardiolipin-Containing Membranes

Liu

Zeng

et al. 2015

J. Phys. Chem. C

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Interactions of cytochrome c (cyt c) with cardiolipin (CL)-containing membranes have been revealed to play an important role in inducing early apoptosis. In this paper, we studied the interaction of cyt c with solid-supported CL-containing lipid bilayers by a lable-free spectroelectrochemistry method. The biomimetic membrane was fabricated by fusing cardiolipin-phosphatidylcholine (CL_PC, 1:4) vesicles onto the hydrophobic surface of a preadsorbed 1-dodecanethiol (DT) on a gold electrode (CL_PC/DT/Au). The adsorption of cyt c onto the CL_PC/DT/Au was in-situ studied by cyclic voltammetry (CV) and surface-enhanced Infrared adsorption spectroscopy (SEIRAS). The electrochemistry of Cyt c/CL_PC/DT/Au exhibits the formal potential (E f ) at 0.21 V (vs. Ag/AgCl), a positive shift of 190 mV as compared to that of native cyt c adsorbed at the mercaptoundecanoic acid-modified gold Page 1 of 34 ACS Paragon Plus Environment The Journal of Physical Chemistry 2 electrode (Cyt c/MUA/Au). The potential-induced SEIRA difference spectroscopy discloses that cyt c was loosely adsorbed onto CL_PC/DT/Au in a different orientation, and underwent a new β-sheet formation relative to native cyt c adsorbed onto MUA/Au. It could be the enhanced hydration change of CL-bound cyt c upon oxidization and reduction and the different adsorption orientation that determine the positive shift in its formal potential.

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Section: Electrochemistry Of Cyt C Adsorbed Onto Cl-containing Lipid mentioning

confidence: 99%

Label-Free Surface-Enhanced Infrared Spectroelectrochemistry Studies the Interaction of Cytochrome c with Cardiolipin-Containing Membranes

Liu

Zeng

et al. 2015

J. Phys. Chem. C

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“…6.25×10 -6 -9.30×10 -5 3.47×10 -7 - [69] HRP/γ-Al2O3/CHT/ GCE f 0 (SCE) (0.5-700)×10 -6 0.07×10 -6 0.249 A M −1 cm −2 [70] Ag NPs/CHIT-GO/cysteamine/A u electrode g -0.4 (SCE)…”

Section: Electrode Gap Is 50 µMmentioning

confidence: 99%

Bimetallic nanowire sensors for extracellular electrochemical hydrogen peroxide detection in HL-1 cell culture

Nikolaev

Maybeck

Neumann

et al. 2017

J Solid State Electrochem

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The present study of nanoelectrochemical sensors prepared by directed electrochemical nanowire assembly (DENA) is defined by the requirements of electrochemical analysis, where the transducer function of metallic nanowires is synergetically combined with their electrochemical catalytic activity with respect to a particular analyte. We show for the first time that this technique can be employed for metals (Pd, Au) and their bimetallic compositions to create various multicomponent sensor nanomaterials on a single chip without the use of multistep lithography for the spatially resolved analysis of solutions. The nanostructures of various compositions can be individually addressed when used in liquid media, so that the particular surface properties of the individual nanoarray elements can be used for the electrochemical analysis of specific analytes. The sensor application of these devices in electrolytes and cell culture conditions has been demonstrated for the first time. As an example, the Pd-Au nanowires prepared by DENA were used for a non-enzymatic analysis of H2O2 with a linear concentration interval of 10-6-10-3 M, sensitivity of 18 µA M-1 and detection limit of 3×10-7 M at as low absolute value of the detection potential as-0.05 V. This sensor was also proven for the detection of hydrogen peroxide in HL-1 cell culture, demonstrating good biocompatibility and support for the cell culture conditions. Using various DENA-grown electrochemical compositions on a single chip, a novel multisensor platform is proposed for the determination of various analytes in electrolyte solutions for biocompatible sensor arrays, flexible multianalyte environmental and technological process monitoring, and healthcare areas.

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“…Noble metal particles (e.g., Au, Pt and Ag) have attracted considerable attention due to their unique physical and chemical properties, as well as their potential use in electronic, photonic, catalytic and biological applications [ 1 , 2 , 3 ]. In particular, Ag nanoparticles are some of the well-developed materials that have been used for applications in electrochemical detection because they are inexpensive relative to other noble metal materials and they possess good chemical and physical properties [ 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 ]. For example, well-dispersed Ag nanoparticles have been successfully utilized in the electrochemical detection hydrogen peroxide [ 5 , 6 , 10 , 11 , 14 ], glucose [ 12 ], norepinephrine [ 13 ] and heavy metal ions including Hg(II) [ 7 ], Cr(IV) [ 8 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

“…In particular, Ag nanoparticles are some of the well-developed materials that have been used for applications in electrochemical detection because they are inexpensive relative to other noble metal materials and they possess good chemical and physical properties [ 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 ]. For example, well-dispersed Ag nanoparticles have been successfully utilized in the electrochemical detection hydrogen peroxide [ 5 , 6 , 10 , 11 , 14 ], glucose [ 12 ], norepinephrine [ 13 ] and heavy metal ions including Hg(II) [ 7 ], Cr(IV) [ 8 , 9 ]. Unfortunately, in most cases, the Ag nanoparticles generated by the most methods were often in powder type, which were further coated on the glass carbon electrode (GCE) for electrochemical detection [ 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

“…For example, well-dispersed Ag nanoparticles have been successfully utilized in the electrochemical detection hydrogen peroxide [ 5 , 6 , 10 , 11 , 14 ], glucose [ 12 ], norepinephrine [ 13 ] and heavy metal ions including Hg(II) [ 7 ], Cr(IV) [ 8 , 9 ]. Unfortunately, in most cases, the Ag nanoparticles generated by the most methods were often in powder type, which were further coated on the glass carbon electrode (GCE) for electrochemical detection [ 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 ]. Therefore, the further electrode preparation led to additional cost and time.…”

Section: Introductionmentioning

confidence: 99%

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Ag Nanoparticles‐Modified 3D Graphene Foam for Binder‐Free Electrodes of Electrochemical Sensors

et al. 2017

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Ag nanoparticles-modified 3D graphene foam was synthesized through a one-step in-situ approach and then directly applied as the electrode of an electrochemical sensor. The composite foam electrode exhibited electrocatalytic activity towards Hg(II) oxidation with high limit of detection and sensitivity of 0.11 µM and 8.0 µA/µM, respectively. Moreover, the composite foam electrode for the sensor exhibited high cycling stability, long-term durability and reproducibility. These results were attributed to the unique porous structure of the composite foam electrode, which enabled the surface of Ag nanoparticles modified reduced graphene oxide (Ag NPs modified rGO) foam to become highly accessible to the metal ion and provided more void volume for the reaction with metal ion. This work not only proved that the composite foam has great potential application in heavy metal ions sensors, but also provided a facile method of gram scale synthesis 3D electrode materials based on rGO foam and other electrical active materials for various applications.

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A new amperometric H2O2 biosensor based on nanocomposite films of chitosan–MWNTs, hemoglobin, and silver nanoparticles

Cited by 32 publications

References 46 publications

Label-Free Surface-Enhanced Infrared Spectroelectrochemistry Studies the Interaction of Cytochrome c with Cardiolipin-Containing Membranes

Label-Free Surface-Enhanced Infrared Spectroelectrochemistry Studies the Interaction of Cytochrome c with Cardiolipin-Containing Membranes

Bimetallic nanowire sensors for extracellular electrochemical hydrogen peroxide detection in HL-1 cell culture

Ag Nanoparticles‐Modified 3D Graphene Foam for Binder‐Free Electrodes of Electrochemical Sensors

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