Electroanalysis of diquat using a glassy carbon electrode modified with natural hydroxyapatite and β-cyclodextrin composite

Tchoffo, Rodrigue; Ngassa, Guy B. P.; Tonlé, Ignas Kenfack; Ngameni, Emmanuel

doi:10.1016/j.talanta.2020.121550

Cited by 17 publications

(15 citation statements)

References 56 publications

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“…The preparation and characterization of β-CD natural hydroxyapatite composite material is fully described elsewhere (Tchoffo et al 2021). Brie y, the starting materials were bovine bones collected at local market.…”

Section: Chemicals and Reagentsmentioning

confidence: 99%

“…In these lines, the exploitation of smectite/β-CD composite material for the detection of paraquat has been achieved (Tcheumi et al 2019). Also, we have reported the use of a hydroxyapatite/β-CD hybrid material for the electrochemical detection of diquat (Tchoffo et al 2021). In the framework of that program, the present study describes the electroanalysis and detection of Pb 2+ ions in aqueous medium.…”

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confidence: 97%

“…Due to their microcrystalline structure, their acid-base properties, ion-exchange ability, adsorption capacity and their chemically reactive sites very accessible (Chen et al 2008), they are exploited in various elds (Sun et al 2018;Ajab et al 2019;El Mhammedi et al 2009a;Li et al 2009;Prongmanee et al 2019). Thus, several studies have reported the use of this material as electrode modi er for the detection of various organic pollutants (El Mhammedi et al 2007;El Mhammedi et al 2009a;Li et al 2009;Yin et al 2010;Tchoffo et al 2021). Also, HAP modi ed electrodes have been applied for the detection of heavy metal ions, including Pb 2+ (Pan et al 2009;El Mhammedi et al 2009b;El Mhammedi et al 2013), Cd 2+ (Li et al 2009;Gao et al 2016), Cu 2+ and Hg 2+ (Sun et al 2018).…”

mentioning

confidence: 99%

“…HAPs have on their surface numerous hydroxyl groups (P-OH and Ca-OH) that can allow their modi cation by grafting of either organic or inorganic compounds (Saoiabi et al 2010). Therefore, the modi cation of HAP surface with various organic substances has been the subject of many studies (Liu et al 1998;Leprêtre et al 2009;Othmani et al 2013;Tang et al 2013;Yala et al 2013;Tchoffo et al 2021). These modi cations are of great interest as they induce to the material new properties.…”

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confidence: 99%

“…It is toroidal in shape, with a hydrophilic outer side which provides water solubility and a hydrophobic inner cavity (Niu et al 2018;Tcheumi et al 2019). These interesting characteristics provide the materials functionalized by β-CD a wide eld of application, especially in electroanalysis (Alam et al 2018;Tcheumi et al 2019;Tchoffo et al 2021;Yang et al 2015;Zhu et al 2016). Thus, Alam et al (2018) used multi-walled carbon nanotube and β-cyclodextrin for electrochemical sensing of acetaminophen.…”

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confidence: 99%

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Surface functionalization of natural hydroxyapatite by polymerization of β-cyclodextrin: application as electrode material for the electrochemical detection of Pb(II)

Tchoffo

Ngassa

Doungmo

et al. 2021

Environ Sci Pollut Res

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A composite material prepared by polymerization of β-cyclodextrin (β-CD) on the surface of natural hydroxyapatite using citric acid as cross linker, was employed as electrode material for the detection of Pb(II). Hydroxyapatite was obtained from bovine bones, following a three-step procedure including precalcination, chemical treatment with (NH 4 ) 2 HPO 4 and calcination. The structure of the pristine hydroxyapatite (NHAP P0.5 ) and its functionalized counterpart (NHAP p0.5 -CA-β-CD) materials was examined using XRD and FTIR. Upon deposition as thin lm on a glassy carbon electrode (GCE), the ion exchange ability of NHAP p0.5 -CA-β-CD was exploited to elaborate a sensitive sensor for the detection of lead. The electroanalytical procedure was based on the chemical accumulation of lead ions under opencircuit conditions, followed by the detection of the preconcentrated species using differential pulse anodic stripping voltammetry. The reproducibility of the proposed method based on different measurements in a solution containing 2 µM lead gave a coe cient of variation of 1.27%. Signi cant parameters that can affect the lead stripping response were optimized: a linear calibration curve for lead (II) in the concentration range of 2 × 10 − 8 mol L − 1 − 20 × 10 − 8 mol L − 1 (R 2 = 0.998) was obtained. The detection limit (DL = 3S/M) and the sensitivity of the proposed sensor were 5.06 × 10 − 10 mol L − 1 and 100.80 µA.µM − 1 , respectively. The interfering effect of several ions expected to affect the stripping determination of lead was evaluated, and the proposed sensor was also successfully applied in the determination of Pb 2+ ions in spring water and well water.

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Section: Chemicals and Reagentsmentioning

confidence: 99%

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confidence: 97%

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confidence: 99%

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confidence: 99%

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Surface functionalization of natural hydroxyapatite by polymerization of β-cyclodextrin: application as electrode material for the electrochemical detection of Pb(II)

Tchoffo

Ngassa

Doungmo

et al. 2021

Environ Sci Pollut Res

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Detection of Carbendazim in Natural Waters Using a Sensor Based on Magnetite Nanoparticles Modified with Ascorbic Acid/β‐Cyclodextrin

Freitas

Vieira

2022

Electroanalysis

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This paper describes the development of an electrochemical sensor for carbendazim detection using a glassy carbon electrode modified with a new nanomaterial obtained from the synthesis of magnetite nanoparticles stabilized with ascorbic acid and β-cyclodextrin. The nanoparticles were characterized and the sensor was evaluated by electrochemical impedance spectroscopy and square wave voltammetry. The calibration curves were linear for carbendazim concentration ranges of 3.33-13.29 μmol L À 1 and 16.61-29.82 μmol L À 1 with detection limits of 0.43 μmol L À 1 and 2.34 μmol L À 1 , respectively. The proposed sensor represents a fast, efficient and lowcost analytical tool for pesticide monitoring in natural waters.

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Magnetic solid-phase extraction of high molecular weight peptides using stearic acid–functionalized magnetic hydroxyapatite nanocomposite: determination of some hypothalamic agents in biological samples

2021

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Electroanalysis of diquat using a glassy carbon electrode modified with natural hydroxyapatite and β-cyclodextrin composite

Cited by 17 publications

References 56 publications

Surface functionalization of natural hydroxyapatite by polymerization of β-cyclodextrin: application as electrode material for the electrochemical detection of Pb(II)

Surface functionalization of natural hydroxyapatite by polymerization of β-cyclodextrin: application as electrode material for the electrochemical detection of Pb(II)

Detection of Carbendazim in Natural Waters Using a Sensor Based on Magnetite Nanoparticles Modified with Ascorbic Acid/β‐Cyclodextrin

Magnetic solid-phase extraction of high molecular weight peptides using stearic acid–functionalized magnetic hydroxyapatite nanocomposite: determination of some hypothalamic agents in biological samples

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