Electrochemical myoglobin biosensor based on carbon ionic liquid electrode modified with Fe3O4@SiO2 microsphere

You, Zheng; Sha, Hailiang; Sun, Zhaolan; Sun, Wei

doi:10.1007/s10008-013-2259-0

Cited by 31 publications

(7 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Alternatively, nanoparticles such as multi-walled carbon nanotubes (MWCNTs) and Fe 3 O 4 have been used as mediators [16][17][18][19][20] because of their unique structure, high chemical stability, physical properties, high surface area, relatively good conductivity and desirable biocompatibility [21][22][23]. The combination of MWCNTs and Fe 3 O 4 is a developed practical strategy for an improvement in the electrode performance, because the combination of them exhibits synergistic effects toward target analysis [24,25].…”

Section: Introductionmentioning

confidence: 99%

Determination of ganciclovir as an antiviral drug and its interaction with DNA at Fe3O4/carboxylated multi-walled carbon nanotubes modified glassy carbon electrode

2016

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Determination of ganciclovir as an antiviral drug and its interaction with DNA at Fe3O4/carboxylated multi-walled carbon nanotubes modified glassy carbon electrode

2016

View full text Add to dashboard Cite

“…Compared with the bare GCE, Figure 2 a displays the anodic and cathodic peak currents for Au, MnFe 2 O 4 NCs, and MnFe 2 O 4 /Au hybrid nanospheres modified GCE which all decline apparently, which thereby indicates that the bare GCE has been modified successfully by the above nanomaterials. Among all the modified GCE, it can be found that the anodic and cathodic peak currents of the MnFe 2 O 4 NCs modified GCE is the lowest, which is due to the poor conductivity of the metal oxide on the surface of the bare GCE which can slow the electron transfer [ 35 ]. However, after being decorated by Au nanoparticles, the anodic and cathodic peak currents of MnFe 2 O 4 /Au hybrid nanospheres modified GCE observably increases and the peak-to-peak separation (△Ep) decreases from 190 mV to 120 mV, indicating the electron transfer of MnFe 2 O 4 NCs were improved observably by the hybrid of the Au nanoparticles on the surface of MnFe 2 O 4 NCs.…”

Section: Resultsmentioning

confidence: 99%

“…Generally, the peak current would reach a plateau, settling to a constant value which should be the optimum deposition potential. However, when the potentials beyond −0.9 V were applied, a decrease response of the peak current were observed, as shown in Figure 3 c, due to the reduction of hydrogen, which would lead to the formation of micro gas bubbles and thus reduce the effective electrode area and weaken the response of As(III) [ 35 ]. Therefore, the deposition potential of −0.9 V was selected for further studies.…”

Section: Resultsmentioning

confidence: 99%

Electrochemical Sensing toward Trace As(III) Based on Mesoporous MnFe2O4/Au Hybrid Nanospheres Modified Glass Carbon Electrode

Zhou

Han

Fan

et al. 2016

Sensors

View full text Add to dashboard Cite

Au nanoparticles decorated mesoporous MnFe2O4 nanocrystal clusters (MnFe2O4/Au hybrid nanospheres) were used for the electrochemical sensing of As(III) by square wave anodic stripping voltammetry (SWASV). Modified on a cheap glass carbon electrode, these MnFe2O4/Au hybrid nanospheres show favorable sensitivity (0.315 μA/ppb) and limit of detection (LOD) (3.37 ppb) toward As(III) under the optimized conditions in 0.1 M NaAc-HAc (pH 5.0) by depositing for 150 s at the deposition potential of −0.9 V. No obvious interference from Cd(II) and Hg(II) was recognized during the detection of As(III). Additionally, the developed electrode displayed good reproducibility, stability, and repeatability, and offered potential practical applicability for electrochemical detection of As(III) in real water samples. The present work provides a potential method for the design of new and cheap sensors in the application of electrochemical determination toward trace As(III) and other toxic metal ions.

show abstract

“…Kumar et al used rGO/CNT modified SPE electrode for Mb detection which exhibit linear response from 1 ng-ml -1 to 4 mg-ml -1 with LOD of 0.34 ng-ml -1 [49]. Wang et al used ionic-liquid electrode modified by Fe3O4 coated on SiO2 microsphere for electrochemical Mb detection between 0.2 to 11.0 ng-ml -1 with LOD of 0.18 ng-ml -1 [50]. In this work, Mn-doped ZnO nanoparticles synthesized with three different Mn-doping concentrations (atomic fractions) were characterised for structural and morphological examinations using XRD, FTIR, and FESEM.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Mn Doped ZnO Nanoparticles Towards Ascertaining Myocardial Infarction Through an Electrochemical Detection of Myoglobin

et al. 2020

View full text Add to dashboard Cite

Mn-doped ZnO nanostructures were synthesized with three different estimated Mn concentration (atoms/cm 3 ) using sol-gel technique. As synthesized nanostructures were analyzed using Xray diffraction spectroscopy (XRD), Fourier-transform-infrared spectroscopy (FTIR), and field-emission secondary electron microscopy (FE-SEM). XRD pattern reveals of doped ZnO nanostructures reveal a peak related to Zn2Mn3O8 phase along with peaks related to pure ZnO. Average particle size, estimated using Scherer formula, increases with Mn-doping. FE-SEM reveals morphological change from spherical particles (~15-20 nm) to nano-rods then nano-belt like 2 D super lattice structure after doping. Optical band gap obtain from Tauc's plot is 3.82, 2.05, 2.1 and 2.47 eV for pure-ZnO and Mn-doped samples with 13x10 17 , 20x10 17 and 32x10 17 Mn atoms/cm 3 , respectively. Presence of vibration band from 665 to 680 cm -1 in FTIR spectra endorses metal oxide formation. Nanomaterials were screen printed over working electrode of pre-fabricated three terminal electrode. This was used for electrochemical detection of myoglobin (Mb); a biomarker for acute myocardial infarction and were tested for Mb concentrations from 0-15 nM using cyclic voltammetry and electrochemical impedance spectroscopy. Redox current and charge transfer resistance varied linearly with Mb concentration. 7-fold increased sensitivity towards Mb in Mn-doped ZnO sensors is attributed to doping induced stress in nanostructures. Maximum sensitivity of 95A-cm -2 nM -1 with LOD of 0.35 nM is observed for ZnO with 13x10 17 Mn atomic/cm 3 . Response time of ~10 ms is observed. Interference carried out with 7 nM Cytochrome c and 5 mM HSA reveal different oxidation potential and current value for Mb.

show abstract

Electrochemical myoglobin biosensor based on carbon ionic liquid electrode modified with Fe3O4@SiO2 microsphere

Cited by 31 publications

References 32 publications

Determination of ganciclovir as an antiviral drug and its interaction with DNA at Fe3O4/carboxylated multi-walled carbon nanotubes modified glassy carbon electrode

Determination of ganciclovir as an antiviral drug and its interaction with DNA at Fe3O4/carboxylated multi-walled carbon nanotubes modified glassy carbon electrode

Electrochemical Sensing toward Trace As(III) Based on Mesoporous MnFe2O4/Au Hybrid Nanospheres Modified Glass Carbon Electrode

Investigation of Mn Doped ZnO Nanoparticles Towards Ascertaining Myocardial Infarction Through an Electrochemical Detection of Myoglobin

Contact Info

Product

Resources

About