Electrochemical detection of thiocyanate using phosphate-modified zeolite carbon paste electrodes

Idris, Adamu; Saleh, Tawfik A.; Muraza, Oki; Al‐Betar, Abdul‐Rahman

doi:10.1016/j.jtice.2017.01.015

Cited by 16 publications

(5 citation statements)

References 35 publications

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“…On the introduction of the zeolite Y seeds, cationic hydrophilic head of CTAB (CTA + ) advances into the pores as a result of coulombic attraction. As zeolitic frameworks are negatively charged, the zeolite Y seed probably served as a nucleation center, with more of the CTA + species forming reverse micelles around it with their hydrophobic tails directed into the organic phase. Since the system is mildly basic due to the presence of urea, the zeolitic framework adjusts to accommodate more of the bulky CTA + as the system is continuously being magnetic‐stirred.…”

Section: Resultsmentioning

confidence: 99%

Platinum‐promoted fibrous silica Y zeolite with enhanced mass transfer as a highly selective catalyst for n ‐dodecane hydroisomerization

et al. 2019

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Summary A fibrous silica zeolite Y (HY@KCC‐1) catalyst with a high surface area of 568 m2/g and unique core‐shell morphology was successfully synthesized via a modified KCC‐1 synthesis method. Characterization of the catalysts was achieved with X‐ray powder diffraction (XRD), field emission scanning microscope (FESEM), N2 adsorption/desorption, and 2,6‐dimethylpyridine adsorbed Fourier‐transform infrared spectroscopy (FTIR). The Pt/HY@KCC‐1 has displayed complete n‐dodecane conversion coupled with an incredibly enhanced isomer yield of 72% at 350°C, nearly two‐fold higher than that of unmodified Pt/HY catalyst. Remarkably, Pt/HY@KCC‐1 had an internal effectiveness factor (η) of unity and negligible internal diffusion limitation, thus suggesting its potential application in hydroisomerization of higher hydrocarbons for enhancing fuel properties.

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Section: Resultsmentioning

confidence: 99%

Platinum‐promoted fibrous silica Y zeolite with enhanced mass transfer as a highly selective catalyst for n ‐dodecane hydroisomerization

et al. 2019

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“…The mordenite carbon paste electrode containing 5% phosphorous demonstrated a maximum current density of 5.6 105 μA cm −2 with a linear dynamic range of 10 to 150 μM was obtained. 76 Even in the past, only a few articles found on the electrochemical detection using zeolite. Hence, the detection of various heavy metal ions, toxic chemicals, pathogens using zeolite support is still open for mordenite zeolites.…”

Section: Methodsmentioning

confidence: 99%

Recent advances in the synthesis and applications of mordenite zeolite – review

et al. 2021

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“…Among the wide range of different fabrication procedures of ZMEs, the most widely used methods are the incorporation of zeolite particles into conventional carbon paste electrode (CPE) or the application of zeolite‐polymeric films on solid electrodes . Zeolite‐modified carbon paste electrodes (ZMCPEs) and zeolite‐modified glassy carbon electrodes (ZMGCEs) have been used for the determination of different inorganic, organic and pharmaceutical compounds .…”

Section: Introductionmentioning

confidence: 99%

The Mn‐zeolite/Graphite Modified Glassy Carbon Electrode: Fabrication, Characterization and Analytical Applications

2020

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In this work, low‐cost and environmentally friendly natural zeolite exchanged with Mn2+ cations was used for the first time to modify the glassy carbon electrode with the aim to obtain a fast and simple sensor for voltammetric determination of paracetamol (PAR). The Mn‐zeolite/graphite modified glassy carbon electrode (MnZG−GCE) was prepared by evaporation of solvent from dispersion of the zeolite/graphite mixture with the polymer in acetone. The electrochemical characteristics of MnZG−GCE were conducted by electrochemical impedance spectroscopy and cyclic voltammetry. Compared with graphite modified GCE (G−GCE), MnZG−GCE exhibited better electrochemical parameters, which confirms the superiority of applying zeolite in the proposed sensor. The optimization of the pH‐value of supporting electrolyte and instrumental parameters were carried out. The peak current was proportional to the concentration of PAR in a phosphate buffer saline of pH 6.0 in the range from 0.029 to 0.69 mg L−1 (R=0.9997) with limit of detection of 8.8 μg L−1. Finally, the proposed electrode was successfully applied to determine the paracetamol in pharmaceutical formulation and certified reference materials. The satisfactory recoveries, which ranged from 89.2 to 102.7 %, were obtained for all studied samples. It confirmed the attractiveness of relatively inexpensive, easy to fabricate and non‐toxic MnZG−GCE in determination of PAR in complicated matrixes.

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Electrochemical detection of thiocyanate using phosphate-modified zeolite carbon paste electrodes

Cited by 16 publications

References 35 publications

Platinum‐promoted fibrous silica Y zeolite with enhanced mass transfer as a highly selective catalyst for n ‐dodecane hydroisomerization

Platinum‐promoted fibrous silica Y zeolite with enhanced mass transfer as a highly selective catalyst for n ‐dodecane hydroisomerization

Recent advances in the synthesis and applications of mordenite zeolite – review

The Mn‐zeolite/Graphite Modified Glassy Carbon Electrode: Fabrication, Characterization and Analytical Applications

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