A novel electrochemical sensor based on a glassy carbon electrode modified with dendrimer functionalized magnetic graphene oxide for simultaneous determination of trace Pb(II) and Cd(II)

Baghayeri, Mehdi; Alinezhad, Heshmatollah; Fayazi, Maryam; Tarahomi, Mehrasa; Ghanei-Motlagh, Reza; Maleki, Behrooz

doi:10.1016/j.electacta.2019.04.180

Cited by 184 publications

(47 citation statements)

References 57 publications

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“…Then, Michael addition of second 3-methyl-1-phenyl-1Hpyrazol-5 (4H)-one molecule to the activated intermediate (I) explored the intermediate (II); by eliminating the second water molecule, the product was obtained (Scheme 4). In order to examine the catalyst in terms of reusability [49][50][51][52], it was recovered and then reused for five successive runs. Focusing on the resultant yield of the product (3a), no significant change was observed in the yield, confirming the reusability of the catalyst (Figure 8).…”

Section: Resultsmentioning

confidence: 99%

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Rostami

Kordrostami

2020

Asian J. Nanosci. Mater.

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In this study, graphene oxide was functionalized with 3-aminopyridine to prepare a novel nanocatalyst known as the graphene oxide functionalized pyridine-methanesulfonate (GO@PyH-CH3SO3). The GO@PyH-CH3SO3 was then employed as an effective nanocatalyst to prepare 4, 4'-(aryl methylene)bis(1H-pyrazol-5-ols) via one-pot multicomponent condensation reaction of aldehydes with 3-methyl-1-phenyl-1H-pyrazol-5(4H)-one. The best reaction condition involved the use of 0.02 g of the catalyst for 20 min and at 70 °C without using any solvent. Also, the reusability of catalyst and product yield in five runs was examined and no significant change was observed. The leaching test was utilized to assess the nature of the catalytic activity, and the results showed the heterogeneous condition for the catalytic activity. Efficiently and capability of the GO@PyH-CH3SO3 catalyst and other catalysts were compared and showed the superior properties of this catalyst.

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Section: Resultsmentioning

confidence: 99%

Untitled

Rostami

Kordrostami

2020

Asian J. Nanosci. Mater.

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“…Electrochemical methods offer many advantages for tracking analytes, because of their relatively low cost and short analysis time. 10,11 A magnetic glassy carbon electrode (MGCE) is among the widely used electrodes, 12 such as for the analysis and detection of pigments, drugs, proteins and organic pollutants. [13][14][15] MGCE has several advantages, including good electrical conductivity, high chemical stability, a low thermal expansion coefficient, hard texture, good air tightness, and a broad application potential (approximately À1 to 1 V relative to a saturated calomel electrode).…”

Section: Introductionmentioning

confidence: 99%

Specific adsorption and determination of aspartame in soft drinks with a zein magnetic molecularly imprinted modified MGCE sensor

Tan

et al. 2021

RSC Adv.

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“…Correspondingly, this point was introduced as one of the most important problems caused by the conventional DNA-based biosensors (Karimi-Maleh et al, 2020c). To overcome this problem, the DNA-based biosensors are typically amplified using the high-conductivity modifiers such as conductor polymers, organic and inorganic compounds, ionic liquids, and nanomaterials (Cheraghi et al, 2017;Sanati and Faridbod, 2017;Baghayeri et al, 2019;Faridbod and Sanati, 2019).…”

Section: Introductionmentioning

confidence: 99%

A DNA Based Biosensor Amplified With ZIF-8/Ionic Liquid Composite for Determination of Mitoxantrone Anticancer Drug: An Experimental/Docking Investigation

et al. 2020

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An ultrasensitive DNA electrochemical biosensor based on the carbon paste electrode (CPE) amplified with ZIF-8 and 1-butyl-3-methylimidazolium methanesulfonate (BMIMS) was fabricated in this research. The DNA/BMIMS/ZIF-8/CPE was used for the selective determination of a mitoxantrone anticancer drug in aqueous solution, resulting in a good catalytic effect and a powerful ability for determining mitoxantrone. Also, the interaction of the mitoxantrone anticancer drug with guanine bases of ds-DNA was used as a powerful strategy in the suggested biosensor, which was confirmed with docking investigation. Docking study of mitoxantrone into the ds-DNA sequence showed the intercalative binding mode of mitoxantrone into the nitrogenous-based pairs of ds-DNA. The effective factors such as ds-DNA concentration, temperature, buffer types, and incubation time were also optimized for the fabricated mitoxantrone biosensor. The results showed that, under optimum conditions (T = 25 • C; incubation time=12 min; pH= 4.8 acetate buffer solution and [DNA] = 50 mg/L), the DNA/BMIMS/ZIF-8/CPE could be used in mitoxantrone assay in a concentration ranging from 8.0 nM to 110 µM with a detection limit of 3.0 nM. In addition, recovery data between 99.18 and 102.08% were obtained for the determination of mitoxantrone in the injection samples using DNA/ZIF-8/BMIMF/CPE as powerful biosensors.

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A novel electrochemical sensor based on a glassy carbon electrode modified with dendrimer functionalized magnetic graphene oxide for simultaneous determination of trace Pb(II) and Cd(II)

Cited by 184 publications

References 57 publications

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Specific adsorption and determination of aspartame in soft drinks with a zein magnetic molecularly imprinted modified MGCE sensor

A DNA Based Biosensor Amplified With ZIF-8/Ionic Liquid Composite for Determination of Mitoxantrone Anticancer Drug: An Experimental/Docking Investigation

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