High quality Pt–graphene nanocomposites for efficient electrocatalytic nitrite sensing

Yang, Baofeng; Bin, Duan; Wang, Huiwen; Zhu, Mingshan; Yang, Ping; Du, Yukou

doi:10.1016/j.colsurfa.2015.04.027

Cited by 49 publications

(20 citation statements)

References 53 publications

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“…According to the equation (1), the electroactive surface areas of bare GCE, RGO/GCE, Pt/GCE, and PtÀ RGO/GCE were calculated as 0.071, 0.108, 0.143 and 0.156 cm 2 , respectively. It can be seen that the improvement in surface area of the electrodes is correspondent to the redox peak current increase [40]. Additionally, the surface area of PtÀ RGO/GCE is probably 2.2 times larger than that of bare GCE suggesting that the successful modification of bare electrode surface by PtÀ RGO composite.…”

Section: Electrochemical Characterization Of Bare and Modified Electrmentioning

confidence: 85%

Cauliflower‐like Platinum Particles Decorated Reduced Graphene Oxide for Sensitive Determination of Acetaminophen

et al. 2019

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Over the past years, the development of electrochemical sensing platforms for the sensitive detection of drug molecules have received great interests. In this research study, we introduced cauliflower‐like platinum particles decorated reduced graphene oxide modified glassy carbon electrode (Pt−RGO/GCE) as an electrochemical sensing platform for highly sensitive determination of acetaminophen (ACTM). The sensor was prepared via a simple and environmentally friendly two‐step electrodeposition method at room temperature. The combination of conductive RGO nanosheets and unique structured Pt particles (average 232 nm in diameter) provided an efficient interface with large effective surface area which greatly facilitated the electron transfer of ACTM. The experimental conditions that might affect the drug detection were studied in detail and optimized for best performance. The Pt−RGO/GCE was able to detect ACTM up to the limit of 2.2 nM with a linear concentration range from 0.01 to 350 μM. With its high reproducibility, excellent stability and selectivity, the as‐fabricated sensor was successfully applied to the ACTM content measurement in commercial tablets.

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Section: Electrochemical Characterization Of Bare and Modified Electrmentioning

confidence: 85%

Cauliflower‐like Platinum Particles Decorated Reduced Graphene Oxide for Sensitive Determination of Acetaminophen

et al. 2019

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“…The three main peaks at 2θ = 39.14°, 46.17°a nd 67.58°corresponded to the (111), (200) and (220) planes of Pd, respectively [30]. The characteristic peaks of PtNPs also have been observed with the intense and narrow peak at 2θ = 40.06°and the peaks at 2θ = 47.52°and 69.83°c orresponded to the (111), (200) and (220) planes of Pt, respectively [31].…”

Section: Characterization Of Nanomaterialsmentioning

confidence: 79%

Fabrication of bimetallic Pt/Pd nanoparticles on 2-thiolbenzimidazole functionalized reduced graphene oxide for methanol oxidation

Akyıldırım

Kotan

Yola

et al. 2015

Ionics

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In this study, an electrocatalyst based on 2-thiolbenzimidazole (TBI) functionalized reduced graphene oxide (rGO) with platinum and palladium nanoparticles (PtPdNPs) was synthesized. The successful synthesis of nanomaterials and the prepared glassy carbon electrode (GCE) surfaces were confirmed by transmission electron microscope, X-ray photo electron spectroscopy, scanning electron microscope, electrochemical impedance spectroscopy and X-ray diffraction method. The effective surface areas of TBIrGO/GCE, PdNPs/TBIrGO/GCE, PtNPs/TBIrGO/GCE and Pt-PdNPs/TBIrGO/GCE were calculated to be 324, 578, 667 and 1189 cm 2 /mg, respectively. According to the results, the electrochemical surface area of the Pt-PdNPs/TBIrGO is 3.67, 2.06 and 1.78 times higher than those of TBIrGO, PdNPs/TBIrGO and PtNPs/TBIrGO, respectively. The PtPdNPs/TBIrGO/GCE also exhibited higher peak current for methanol oxidation than those of comparable TBIrGO/GCE, PdNPs/TBIrGO/GCE, PtNPs/TBIrGO/GCE modified GCEs, thus providing evidence for its higher electro-catalytic activity.

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“…Nitrite detection with material approaches similar to the proposed method varies greatly with respect to their dynamic range and detection limit. The chemical/hydrothermal approach shows much better response than the others . Both of them of course are dependent on the usage of hazardous chemicals and high temperature with huge time.…”

Section: Resultsmentioning

confidence: 99%

“…Among these, Pt nanoparticles have especially attracted great interest for electrocatalyst applications . It may be noted that the Pt nanoparticles decorated on polyaniline/graphene and graphene, by chemical reduction and hydrothermal methods were used as electrochemical nitrite sensors. These processes of decoration and conjugation require toxic chemicals such as hydrazine hydrate and/or high temperature, involving complicated multi‐step procedures which are laborious and time consuming.…”

Section: Introductionmentioning

confidence: 99%

A Sensitive and Selective Nitrite Detection in Water Using Graphene/Platinum Nanocomposite

2016

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A glassy carbon electrode modified with reduced graphene oxide and platinum nanocomposite film was developed simply by electrochemical method for the sensitive and selective detection of nitrite in water. The electrochemical reduction of graphene oxide (GO) efficiently eliminates oxygen‐containing functional groups. Pt nanoparticles were electrochemically and homogeneously deposited on the ErGO surface. Field emission scanning electron microscopy (FE‐SEM), Raman spectroscopy, attenuated total reflectance‐fourier transform infrared spectroscopy (ATR‐FTIR), electrochemical impedance spectroscopy (EIS), and cyclic voltammetry (CV) were used to examine the surface morphology and electrocatalytic properties of the Pt‐ErGO nanocomposite film‐modified electrode surface. The fabricated nitrite sensor showed good electrochemical performance with two linear ranges; one from 5 to 100 µM (R2=0.9995) and the other from 100 to 1000 µM (R2=0.9972) and a detection limit of 0.22 µM. The proposed sensor was successfully applied for the detection of nitrite in tap water samples which proves performance of the Pt‐ErGO nanocomposite films.

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High quality Pt–graphene nanocomposites for efficient electrocatalytic nitrite sensing

Cited by 49 publications

References 53 publications

Cauliflower‐like Platinum Particles Decorated Reduced Graphene Oxide for Sensitive Determination of Acetaminophen

Cauliflower‐like Platinum Particles Decorated Reduced Graphene Oxide for Sensitive Determination of Acetaminophen

Fabrication of bimetallic Pt/Pd nanoparticles on 2-thiolbenzimidazole functionalized reduced graphene oxide for methanol oxidation

A Sensitive and Selective Nitrite Detection in Water Using Graphene/Platinum Nanocomposite

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