Electrochemical Detection of H2O2 Based on Fe3O4 Nanoparticles with Graphene Oxide and Polyamidoamine Dendrimer

Yang, Xiao; Wang, Lina; Zhou, Guizhong; Sui, Ning; Gu, Yuanxiang; Wan, Jun

doi:10.1007/s10876-014-0746-9

Cited by 23 publications

(9 citation statements)

References 22 publications

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“…Under the same conditions, the GC/rGO‐Fe 3 O 4 ‐Chit/ss‐DNA‐CB electrode shows a remarkably higher apmerometric response to H 2 O 2 at all concentrations compared to the GC/rGO‐Fe 3 O 4 ‐Chit/ss‐DNA and GC/rGO‐CB electrodes, representing a very good electrocatalytic activity of the GC/rGO‐Fe 3 O 4 ‐Chit/ss‐DNA‐CB electrode and obvious synergetic effect of CB and Fe 3 O 4 towards the electroreduction of H 2 O 2 . In previous works electrocatalytic effect of Fe 3 O 4 nanoparticles for determination of hydrogen peroxide and catalytic activity of CB have been reviewed. In the present work, we showed that synergetic effect of Fe 3 O 4 and CB for electrocatalytic reduction of H 2 O 2 whould result in a significantly lower detection limit and higher sensitivity.…”

Section: Resultsmentioning

confidence: 99%

Highly Sensitive Electrochemical Hydrogen Peroxide Sensor Based on Iron Oxide‐Reduced Graphene Oxide‐Chitosan Modified with DNA‐Celestine Blue

et al. 2017

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The present study describes a novel and very sensitive electrochemical assay for determination of hydrogen peroxide (H2O2) based on synergistic effects of reduced graphene oxide‐ magnetic iron oxide nanocomposite (rGO‐Fe3O4) and celestine blue (CB) for electrochemical reduction of H2O2. rGO‐Fe3O4 nanocomposite was synthesized and characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), X‐ray diffraction (XRD), electrochemical impedance spectroscopy and cyclic voltammetry. Chitosan (Chit) was used for immobilization of amino‐terminated single‐stranded DNA (ss‐DNA) molecules via a glutaraldehyde (GA) to the surface of rGO‐Fe3O4. The MTT (3‐(4,5‐Dimethylthiazol‐2‐yl)‐2,5‐diphenyltetrazolium bromide) results confirmed the biocompatibility of nanocomposite. Experimental parameters affecting the ss‐DNA molecules immobilization were optimized. Finally, by accumulation of the CB on the surface of the rGO‐Fe3O4‐Chit/ssDNA, very sensitive amperometric H2O2 sensor was fabricated. The electrocatalytic activity of the rGO‐Fe3O4‐Chit/DNA‐CB electrode toward H2O2 reduction was found to be very efficient, yielding very low detection limit (DL) of 42 nM and a sensitivity of 8.51 μA/μM. Result shows that complex matrices of the human serum samples did not interfere with the fabricated sensor. The developed sensor provided significant advantages in terms of low detection limit, high stability and good reproducibility for detection of H2O2 in comparison with recently reported electrochemical H2O2 sensors.

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Section: Resultsmentioning

confidence: 99%

Highly Sensitive Electrochemical Hydrogen Peroxide Sensor Based on Iron Oxide‐Reduced Graphene Oxide‐Chitosan Modified with DNA‐Celestine Blue

et al. 2017

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“…Those phenomena reflected that more metal oxide products remained on the wear surfaces in the high concentration of H 2 O 2 solutions. The metal oxide products prevented the fresh metal contacting the H 2 O 2 solution, and reduced the further oxidation reaction 26 . Therefore, the CCD in the 70% H 2 O 2 solution decreased sharply as the test time increased and was lower than those in the 30% and 50% H 2 O 2 solutions when the test time exceeded 40 min as shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

Coupling mechanism between wear and oxidation processes of 304 stainless steel in hydrogen peroxide environments

Dong

Yuan

Bai

et al. 2017

Sci Rep

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Stainless steel is widely used in strongly oxidizing hydrogen peroxide (H2O2) environments. It is crucial to study its wear behaviour and failure mode. The tribological properties and oxidation of 304 stainless steel were investigated using a MMW-1 tribo-tester with a three-electrode setup in H2O2 solutions with different concentrations. Corrosion current densities (CCDs), coefficients of frictions (COFs), wear mass losses, wear surface topographies, and metal oxide films were analysed and compared. The results show that the wear process and oxidation process interacted significantly with each other. Increasing the concentration of H2O2 or the oxidation time was useful to form a layer of integrated, homogeneous, compact and thick metal oxide film. The dense metal oxide films with higher mechanical strengths improved the wear process and also reduced the oxidation reaction. The wear process removed the metal oxide films to increase the oxidation reaction. Theoretical data is provided for the rational design and application of friction pairs in oxidation corrosion conditions.

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“…This may be because hydrazine can reduce the carbonyl and carboxyl functional groups only. The shift of G-peak from 1601 to 1608 cm −1 is attributed to the decrease in the layer of GO particle or the exfoliation of particles, which depends on the degree of oxidation of graphite and more GO sheet can be formed [29]. The 2D-peak was observed at 2881 cm −1 and the band-shift and its shapes are correlated with the number of rGO layers.…”

Section: Characterization Of Precursorsmentioning

confidence: 95%

“…The residual and vacancies become the main defects of rGO, once these groups are removed. The G-peak is the main spectral feature of rGO-like material derived from the in-plane motion of the carbon atom [29].…”

Section: Characterization Of Precursorsmentioning

confidence: 99%

Bio-inspired AgNPs, multilayers-reduced graphene oxide and graphite nanocomposite for electrochemical $$\hbox {H}_{2}{\hbox {O}}_{2}$$ H 2 O 2

et al. 2018

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A bio-mediated route for the synthesis of silver nanoparticles (AgNPs) is an area of interest in research of many scientists, and this work aims to study the electrocatalytic activity of these particles during electrochemical sensing of H 2 O 2 in a phosphate buffer media. The composite electrodes were fabricated using nearly spherical AgNPs and reduced graphene oxide (rGO) with the graphite (99.999% purity) support made of graphite paste. Graphene oxide (GO) was first synthesized using the modified Hummers method followed by rGO synthesis by chemical reduction of GO. rGO is consisting of about nine layers of rGO sheets of a wrinkled surface morphology with an intensity ratio of D to G band (I D /I G) of 1.17 and an interplanar d-spacing of 0.36 nm as evidenced by HRTEM micrograph. There was about 10 times increase in the cell current with the AgNPs-impregnated composite-electrode compared to without AgNPs impregnation, and an overpotential of H 2 O 2 reduction was found to be −1.373 V with a detection limit of 19.04 μM and 95.3% electrode stability with the graphite-rGO-AgNPs composite electrode. A nafion membrane cast on the rGO-AgNPs prevented the leakage of this composite from the electrode surface. The interference of various electroactive compounds on the amperometric response of the graphite-rGO-AgNPs electrode was also investigated.

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Electrochemical Detection of H2O2 Based on Fe3O4 Nanoparticles with Graphene Oxide and Polyamidoamine Dendrimer

Cited by 23 publications

References 22 publications

Highly Sensitive Electrochemical Hydrogen Peroxide Sensor Based on Iron Oxide‐Reduced Graphene Oxide‐Chitosan Modified with DNA‐Celestine Blue

Highly Sensitive Electrochemical Hydrogen Peroxide Sensor Based on Iron Oxide‐Reduced Graphene Oxide‐Chitosan Modified with DNA‐Celestine Blue

Coupling mechanism between wear and oxidation processes of 304 stainless steel in hydrogen peroxide environments

Bio-inspired AgNPs, multilayers-reduced graphene oxide and graphite nanocomposite for electrochemical $$\hbox {H}_{2}{\hbox {O}}_{2}$$ H 2 O 2

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