Highly sensitive and selective ion-imprinted polymers based on one-step electrodeposition of chitosan-graphene nanocomposites for the determination of Cr(VI)

Wu, Shuping; Dai, Xiangzi; Cheng, Tingting; Li, Songjun

doi:10.1016/j.carbpol.2018.04.077

Cited by 71 publications

(28 citation statements)

References 39 publications

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“…Moreover, as presented in Fig. 6 a, two new small peaks at around 422 and 489 nm are observed suggesting the formation of Cr(III), K(I) or Al(III)—ligand complex 45 . Consequently, PANI/Ag (AMPSA)/GO QDs have a potential application for monitoring Cr(III), Al(III) and K(I) in aqueous solutions.…”

Section: Resultsmentioning

confidence: 78%

Polyaniline/Ag nanoparticles/graphene oxide nanocomposite fluorescent sensor for recognition of chromium (VI) ions

Ebrahim

Shokry

Khalil

et al. 2020

Sci Rep

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Selective determination of toxic hexavalent chromium (Cr(VI)) is a stringent important due to its huge negative impact on the health and environment. Recently, the high sensitivity, rapidness, and cost-effectiveness of the fluorescent sensors for Cr(VI) have been developed. A fluorescent nanocomposite (NC) has been synthesized based on doped polyaniline (PANI), 2-acrylamido-2-methylpropanesulfonic acid (AMPSA) capped Ag nanoparticles (NPs) and graphene oxide (GO) quantum dots (QDs) via in situ reaction for highly selective sensing of Cr(VI) ions based on the luminescent quenching in the range from 0.01 to 7.5 mg/L. This NC showed an emission peak at 348 nm with a linear range from 0.01 to 0.05 mg/L and the low limit of detection (LOD) was 0.0065 mg/L (~ 6 µg/L). PANI/Ag (AMPSA) GO QDs NC displayed high selectivity for Cr(VI) over other common metal ions. Notably, the PANI/Ag (AMPSA) GO QDs NC can be used for distinguishing Cr(VI) and Cr(III) in solutions. The sensitive determination of Cr(VI) in real surface water samples was also confirmed and demonstrated recoveries in the range 95.3–99.2%. This NC will emerge as a new class of fluorescence materials that could be suitable for practical applications.

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Section: Resultsmentioning

confidence: 78%

Polyaniline/Ag nanoparticles/graphene oxide nanocomposite fluorescent sensor for recognition of chromium (VI) ions

Ebrahim

Shokry

Khalil

et al. 2020

Sci Rep

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“…The use of nanocomposites based on the combination of ion imprinted polymers (IIP) and carbon nanomaterials for Cr(VI) detection has also a share. Songjun Li et al [ 68 ] constructed a new sensor based on ion-imprinted chitosan-graphene nanocomposites modified gold electrode dedicated to the detection of Cr(VI) with recoveries of 99–104% and 96–97% in tap and river water respectively. The designed sensor showed high selectivity owing to the created cavities in the IIP and the metal-ligand chemistry, excellent stability, good repeatability and low limit of detection of 3.33 × 10 −2 µg·L −1 .…”

Section: Electrochemical Sensors For Hexavalent Chromium Determinamentioning

confidence: 99%

“…The developed sensor exhibits the lowest limit of detection (1.56 × 10 −2 µg·L −1 ) among all composite sensors, which can be explained by the synergistic effect of gold-palladium. Moreover, the IIP-S sensor [ 68 ] provided excellent detection limit (3.33 × 10 −2 µg·L −1 ) of Cr(VI) as it is shown in Table 3 . The highest sensitivity may be due to the large surface area given by graphene and to the created cavities in the IIP (strong metal-ligand chemistry)…”

Section: Electrochemical Sensors For Hexavalent Chromium Determinamentioning

confidence: 99%

Recent Advances in Electrochemical Monitoring of Chromium

Hilali

Mohammadi

Amine

et al. 2020

Sensors

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The extensive use of chromium by several industries conducts to the discharge of an immense quantity of its various forms in the environment which affects drastically the ecological and biological lives especially in the case of hexavalent chromium. Electrochemical sensors and biosensors are useful devices for chromium determination. In the last five years, several sensors based on the modification of electrode surface by different nanomaterials (fluorine tin oxide, titanium dioxide, carbon nanomaterials, metallic nanoparticles and nanocomposite) and biosensors with different biorecognition elements (microbial fuel cell, bacteria, enzyme, DNA) were employed for chromium monitoring. Herein, recent advances related to the use of electrochemical approaches for measurement of trivalent and hexavalent chromium from 2015 to 2020 are reported. A discussion of both chromium species detections and speciation studies is provided.

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“…Electrochemical methods, however, become more and more popular for Cd(II) determination because of their efficiency and reliability enhancement in simplicity, rapid response, sensitivity, and low cost for practical application [15][16][17][18][19]. Many of the electrochemical strategies are based on the modification of the working electrode with appropriate material that can enhance the electrocatalytic activity for Cd(II) redox on electrode surface, or with some particular reagent containing active groups that can have chelation interact with Cd(II) [20][21][22]. In the last decade, various inorganic materials or nanomaterials-such as gold nanoparticles [23], bismuth nanoparticle [24], bismuth-antimony film [25], multiwalled carbon nanotubes (MWCNTs) [26][27][28], and graphene-carbon nanotubes hybrid nanocomposite-have been prepared for electrode modification to accelerate electron transfer rate and improve the electrocatalytical reduction activity of the deposited cadmium during preconcentration step for the enhanced electrochemical signals of Cd(II) stripping peaks [29].…”

Section: Introductionmentioning

confidence: 99%

A Novel Electrochemical Sensor Based on Electropolymerized Ion Imprinted PoPD/ERGO Composite for Trace Cd(II) Determination in Water

Wang

et al. 2020

Sensors

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A novel electrochemical sensor based on electropolymerized ion imprinted poly (o-phenylenediamine) PoPD/electrochemical reduced graphene (ERGO) composite on glass carbon electrode (GCE) was fabricated for selective and sensitive determination of trace Cd(II) in water. ERGO was first deposited on the surface of GCE by electrochemical cyclic voltammetry (CV) scanning to enhance the electron transport activity at electrode surface. The ion imprinted polymer (IIP) of imprinted PoPD was then in situ electropolymerized on ERGO via CV scanning with oPD as functional monomer and Cd(II) ions as template, following removal of the template using electrochemical peroxidation method. The obtained imprinted PoPD/RERGO composites were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray energy spectroscopy (EDS) for the observation of their morphologies and components. The electrochemical behavior of the imprinted PoPD/ERGO/GCE was performed by CV and SWASV. The fabricated sensor of the imprinted PoPD/ERGO/GCE showed a good selectivity toward target Cd(II) ions in the presence of other heavy metal ions. Under the optimized experimental conditions, the sensor exhibited a good linear relationship between SWASV stripping peak values and Cd(II) concentration in the range of 1 to 50 ng/mL, with the limit of detection as 0.13 ng/mL (S/N = 3). The proposed electrochemical sensor of imprinted PoPD/ERGO/GCE was successfully applied for trace Cd(II) determination in real water samples.

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Highly sensitive and selective ion-imprinted polymers based on one-step electrodeposition of chitosan-graphene nanocomposites for the determination of Cr(VI)

Cited by 71 publications

References 39 publications

Polyaniline/Ag nanoparticles/graphene oxide nanocomposite fluorescent sensor for recognition of chromium (VI) ions

Polyaniline/Ag nanoparticles/graphene oxide nanocomposite fluorescent sensor for recognition of chromium (VI) ions

Recent Advances in Electrochemical Monitoring of Chromium

A Novel Electrochemical Sensor Based on Electropolymerized Ion Imprinted PoPD/ERGO Composite for Trace Cd(II) Determination in Water

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