Electrodeposition of Platinum Nanoparticles on Polyaniline Modified Electrode and its Electrocatalytic Activity Towards the Oxidation of Methanol

Abstract Numerous studies suggest that modification with functional nanomaterials can enhance the electrode electrocatalytic activity, sensitivity, and selectivity of the electrochemical sensors. Here, a highly sensitive and cost-effective disposable non-enzymatic glucose sensor based on copper(II)/reduced graphene oxide modified screen-printed carbon electrode is demonstrated. Facile fabrication of the developed sensing electrodes is carried out by the adsorption of copper(II) onto graphene oxide modified electrode, then following the electrochemical reduction. The proposed sensor illustrates good electrocatalytic activity toward glucose oxidation with a wide linear detection range from 0.10 mM to 12.5 mM, low detection limit of 65 µM, and high sensitivity of 172 µA mM− 1 cm− 2 along with satisfactory anti-interference ability, reproducibility, stability, and the acceptable recoveries for the detection of glucose in a human serum sample (95.6–106.4%). The copper(II)/reduced graphene oxide based sensor with the superior performances is a great potential for the quantitation of glucose in real samples.

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Development of cobalt oxide film modified electrode decorated with platinum nanoparticles as a biosensing platform for phenol

International Journal of Environmental & Analytical Chemistry ◽

10.1080/03067319.2019.1643462 ◽

2019 ◽

Vol 100 (8) ◽

pp. 873-881

Author(s):

Ceren Kuşcu ◽

K. Volkan Özdokur ◽

Süleyman Koçak ◽

F. Nil Ertaş

Keyword(s):

Oxide Film ◽

Cobalt Oxide ◽

Modified Electrode ◽

Platinum Nanoparticles

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Enhanced electrocatalytic performance of platinum nanoparticles on thiolated polyaniline-multiwalled carbon nanotubes for methanol oxidation

RSC Advances ◽

10.1039/c8ra06246c ◽

2018 ◽

Vol 8 (59) ◽

pp. 33742-33747 ◽

Cited By ~ 3

Author(s):

Zhaohong Su ◽

Chaorong Li ◽

Yongbing Cheng ◽

Qingwen Gui ◽

Yuanfu Xiong ◽

...

Keyword(s):

Carbon Nanotubes ◽

Multiwalled Carbon Nanotubes ◽

Methanol Oxidation ◽

Platinum Nanoparticles ◽

Electrocatalytic Oxidation ◽

Pt Nanoparticles ◽

Acidic Media ◽

Multiwalled Carbon ◽

Oxidation Of Methanol ◽

Electrocatalytic Performance

Pt nanoparticles (PtNPs) well-dispersed on thiolated polyaniline (TPANI)-multiwalled carbon nanotubes (MWCNTs) were prepared for enhanced electrocatalytic oxidation of methanol in acidic media.

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Highly Sensitive Detection of Dopamine at Ionic Liquid Functionalized RGO/ZIF-8 Nanocomposite-Modified Electrode

Journal of Nanomaterials ◽

10.1155/2019/8936095 ◽

2019 ◽

Vol 2019 ◽

pp. 1-9 ◽

Cited By ~ 2

Author(s):

Lei Cheng ◽

Youjun Fan ◽

Xingcan Shen ◽

Hong Liang

Keyword(s):

Ionic Liquid ◽

Modified Electrode ◽

Electrocatalytic Activity ◽

Electrochemical Impedance ◽

Modified Electrodes ◽

Differential Pulse ◽

Zeolitic Imidazolate Framework ◽

Response Range ◽

Highly Sensitive ◽

Highly Sensitive Detection

A hybrid and hierarchical nanocomposite was successfully prepared by the growth of zeolitic imidazolate framework-8 (ZIF-8) on the template of ionic liquid (IL, [Bmim][BF4]) functionalized reduced graphene oxide (IL-RGO). The structure and morphology of the IL-RGO/ZIF-8 nanocomposite were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectrometer (FTIR), and Raman spectroscopy. The results showed that RGO sheets were refrained from restacking by IL, and ZIF-8 nanoparticles grew well on the surface of IL-RGO. Owing to the synergistic effect from large surface area and excellent electrocatalytic activity of ZIF-8 and great electrical conductivity of IL-RGO, a highly sensitive sensor for dopamine (DA) can be obtained. IL-RGO/ZIF-8-modified electrode exhibits good electrocatalytic activity and electroconductive properties towards DA which were investigated by cyclic voltammetry (CV), differential pulse voltammetry (DPV), and electrochemical impedance spectroscopy (EIS). Compared with bare or IL-RGO-modified electrodes, the IL-RGO/ZIF-8-modified electrode effectively depressed the oxidation overpotential of DA. The linear response range of DA was from 1.0×10−7 to 1.0×10−4 mol/L with a low detection of limit 3.5×10−8 mol/L. In addition, the sensor was shown to provide satisfactory stability for the determination of DA.

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