Fabrication a new modified electrochemical sensor based on Au–Pd bimetallic nanoparticle decorated graphene for citalopram determination

Daneshvar, Leili; Rounaghi, Gholam Hossein; Es’haghi, Zarrin; Chamsaz, Mahmoud; Tarahomi, Somayeh

doi:10.1016/j.msec.2016.07.025

Cited by 23 publications

(11 citation statements)

References 40 publications

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“…As a result, many analytical methods have been introduced to determine CIT in tablets, water, and biological samples, most notably chromatographic [ 7 ] and capillary electrophoretic [ 8 ]. Also, a few works based on voltammetric techniques have been reported for CIT determination using bulk glassy carbon electrode [ 9 ] or electrodes modified with carbon nanostructures, metal or metal oxide nanoparticles, as well as conducting polymers [ 10 – 13 ].…”

Section: Introductionmentioning

confidence: 99%

A voltammetric sensor based on mixed proton-electron conducting composite including metal-organic framework JUK-2 for determination of citalopram

et al. 2021

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A voltammetric sensor has been developed based on glassy carbon electrode (GCE) modification with nanocomposite consisting of manganese-based metal-organic framework (JUK-2), multi-walled carbon nanotubes (MWCNTs), and gold nanoparticles (AuNPs) for detection of citalopram (CIT). The composition and morphology of JUK-2-MWCNTs-AuNPs/GCE were characterized by X-ray powder diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR), energy dispersion spectroscopy (EDS), and scanning electron microscopy (SEM). The electrochemical properties investigated using electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV) indicated that the fabricated hybrid material exhibits the properties of mixed ion-electron conductor (MIEC). Using staircase voltammetry (SCV), under optimized conditions, the fabricated sensor shows a linear response in three CIT concentration ranges, 0.05–1.0, 1.0–10.0 and 15.0–115.0 μmol L−1, with a detection limit of 0.011 μmol L−1. The JUK-2-MWCNTs-AuNPs/GCE was successfully employed for the determination of CIT in pharmaceutical, environmental waters, and biological samples with satisfactory recoveries (98.6–104.8%). Graphical abstract

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Section: Introductionmentioning

confidence: 99%

A voltammetric sensor based on mixed proton-electron conducting composite including metal-organic framework JUK-2 for determination of citalopram

et al. 2021

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“…On the other hand, chemically-and physically-synthesized AuPd NPs are attracting a great deal of interest due to the synergic effect of the two combined metals, Au being an excellent plasmonic material, and Pd an excellent catalytic material [22][23][24]29]. In addition to catalytic applications, these systems can exploit their functional properties in sensor applications [30][31][32], plasmonics [30,33], photocatalysis [34], hydrogen storage [35], etc. In general, the properties of NPs bridge those of bulk and atomic systems (size effects), and such properties are wide-range modifiable by the manipulation of the structural ones.…”

Section: Introductionmentioning

confidence: 99%

Experimental Analysis on the Molten-Phase Dewetting Characteristics of AuPd Alloy Films on Topographically-Structured Substrates

Ruffino¹

2017

Metals

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AuPd nanoparticles are formed on fluorine-doped tin oxide (FTO) by a nanosecond laser irradiation-induced dewetting process of deposited AuPd films. In particular, we analyze the effect of the surface topography of the substrate on the dewetting process and, so, on the final mean size of the formed nanoparticles. In fact, we used two supporting FTO substrates differing in the surface topography: we used a FTO layer which is un-intentionally patterned since it is formed by FTO pyramids randomly distributed on the glass slide as result of the deposition process of the same FTO layer, namely substrate A. We used, also, a further FTO substrate, namely substrate B, presenting, as a result of a chemical etching process, a higher roughness and higher mean distance between nearest-neighbor pyramids with respect to substrate A. The results concerning the size of the obtained AuPd NPs by the laser irradiations with the laser fluence fixed shows that the substrate topography impacts on the dewetting process. In particular, we found that below a critical thickness of the deposited AuPd film, the NPs formed on substrates A and B have similar size and a similar trend for the evolution of their size versus the film thickness (i.e., the dewetting process is not influenced by the substrate topography since the film does not interact with the substrate topography). On the other hand, however, above a critical thickness of the deposited AuPd film, the AuPd NPs show a higher mean size (versus the film thickness) on substrate B than on substrate A, indicating that the AuPd film interacts with the substrate topography during the dewetting process. These results are quantified and discussed by the description of the substrate topography effect on the excess of chemical potential driving the dewetting process.

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“…Graphene is one of the most promising supporting materials for the ORR catalysts. Hybridization of noble metal nanoparticles with graphene is an effective strategy for enhancing the functionality of nanocatalysts and further maximizes the high activity . Recently, various carbon allotropes of morphological diversities doped with different heteroatoms (e. g., N, S, P, F, and O) have been reported to perform as efficient electrocatalysts .…”

Section: Introductionmentioning

confidence: 99%

Shewanella oneidensis Assisted Biosynthesis of Pd/Reductive‐Graphene‐Oxide Nanocomposites for Oxygen Reduction Reaction

Wang

Shen

et al. 2020

ChemistrySelect

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Biological synthesis of green nanomaterials holds great promise for sustainable catalysis with versatile applications. Herein, Shewanella oneidensis MR‐1 is used to develop a green method to synthesize Pd/reductive graphene oxide (rGO) nanocomposites without the addition of toxic reducing agents. It was found that S. oneidensis MR‐1 cells could efficiently reduce graphene oxide to rGO and synthesize Pd nanoparticles that uniformly dispersed on the rGO nanosheets. More strikingly, the addition of GO greatly increases the recovery rate of Pd from 37.8 % to 90.4 %. After carbonization, the biosynthesized Pd/rGO nanocomposites exhibits promising catalytic activities toward oxygen reduction reaction with an onset potential of 0.92 V, a half‐wave potential of 0.81 V, and a limiting current density of 5.2 mA cm−2 in 0.1 M KOH electrolyte. This work provides a simple, “green”, and cost‐effective method for the preparation of graphene supported nanocomposites with extended applications.

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Fabrication a new modified electrochemical sensor based on Au–Pd bimetallic nanoparticle decorated graphene for citalopram determination

Cited by 23 publications

References 40 publications

A voltammetric sensor based on mixed proton-electron conducting composite including metal-organic framework JUK-2 for determination of citalopram

A voltammetric sensor based on mixed proton-electron conducting composite including metal-organic framework JUK-2 for determination of citalopram

Experimental Analysis on the Molten-Phase Dewetting Characteristics of AuPd Alloy Films on Topographically-Structured Substrates

Shewanella oneidensis Assisted Biosynthesis of Pd/Reductive‐Graphene‐Oxide Nanocomposites for Oxygen Reduction Reaction

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