Platinum incorporated mordenite zeolite modified glassy carbon electrode used for selective electrochemical detection of mercury ions

Sakthinathan, Subramanian; Tamizhdurai, P.; Arumugam, R.; Chiu, Te‐Wei; Mangesh, V.L.; Veerarajan, S.; Shanthi, K.

doi:10.1016/j.micromeso.2019.109770

Cited by 47 publications

(20 citation statements)

References 52 publications

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“…These signals are more intense in the composite obtained under optimal conditions, confirming a higher amount of BiOI over this composite sample. In addition, typical bands associated with mordenite zeolite are located at 808, 960 cm −1 and in the range between 1206 and 1869 cm −1 , corresponding to the fundamental vibrations of the tetrahedral bonds of (Al, Si) O 4 [ 58 , 59 , 60 ]. Furthermore, stretching signal vibrations associated with silanol groups (Si-O-H) are registered around 3668 cm −1 [ 61 ].…”

Section: Resultsmentioning

confidence: 99%

Synthesis of BiOI/Mordenite Composites for Photocatalytic Treatment of Organic Pollutants Present in Agro-Industrial Wastewater

et al. 2022

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Recently, bismuth oxyiodide (BiOI) is an attractive semiconductor to use in heterogeneous photocatalysis processes. Unfortunately, BiOI individually shows limited photocatalytic efficiency, instability, and a quick recombination of electron/holes. Considering the practical application of this semiconductor, some studies show that synthetic zeolites provide good support for this photocatalyst. This support material permits a better photocatalytic efficiency because it prevents the quick recombination of photogenerated pairs. However, the optimal conditions (time and temperature) to obtain composites (BiOI/ synthetic zeolite) with high photocatalytic efficiency using a coprecipitation-solvothermal growth method have not yet been reported. In this study, a response surface methodology (RSM) based on a central composite design (CCD) was applied to optimize the synthesis conditions of BiOI/mordenite composites. For this purpose, eleven BiOI/mordenite composites were synthesized using a combined coprecipitation-solvothermal method under different time and temperature conditions. The photocatalytic activities of the synthesized composites were evaluated after 20 min of photocatalytic oxidation of caffeic acid, a typical organic pollutant found in agro-industrial wastewater. Moreover, BiOI/mordenite composites with the highest and lowest photocatalytic activity were physically and chemically characterized using nitrogen adsorption isotherms, scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), and diffuse reflectance spectroscopy (DRS). The optimal synthesis conditions prove to be 187 °C and 9 h. In addition, the changes applied to the experimental conditions led to surface property modifications that influenced the photocatalytic degradation efficiency of the BiOI/mordenite composite toward caffeic acid photodegradation.

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Section: Resultsmentioning

confidence: 99%

Synthesis of BiOI/Mordenite Composites for Photocatalytic Treatment of Organic Pollutants Present in Agro-Industrial Wastewater

et al. 2022

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“…They also compared long linear range with various other electrodes for the determination of mercury ions and found a wider long linear range of 0.1–220 μM. 73 Hence, the detection of heavy metal ions using zeolite support is still open for many zeolites and heavy metal ions.…”

Section: Methodsmentioning

confidence: 99%

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

et al. 2021

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“…In one example, glassy carbon electrode (GCE)/platinum (Pt)/dealuminated (D)-mordenite electrode was selected for heavy metal ions detection such as Hg 2+ . In this work, the detection limit was 3.4 nM, and the sensitivity was 11.2598 µA µM −1 cm −2 [51]. The detection of Pb 2+ was performed with glassy carbon electrode modified by polyvinyl alcohol/chitosan-thermally reduced graphene composite and via anodic stripping voltam-metry [52].…”

Section: Glassy Carbon Electrodesmentioning

confidence: 98%

Electrochemical Devices to Monitor Ionic Analytes for Healthcare and Industrial Applications

et al. 2022

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Recent advances in electrochemical devices have sparked exciting opportunities in the healthcare, environment, and food industries. These devices can be fabricated at low costs and are capable of multiplex monitoring. This overcomes challenges presnted in traditional sensors for biomolecules and provides us a unique gateway toward comprehensive analyses. The advantages of electrochemical sensors are derived from their direct integration with electronics and their high selectivity along with sensitivity to sense a wide range of ionic analytes at an economical cost. This review paper aims to summarize recent innovations of a wide variety of electrochemical sensors for ionic analytes for health care and industrial applications. Many of these ionic analytes are important biomarkers to target for new diagnostic tools for medicine, food quality monitoring, and pollution detection. In this paper, we will examine various fabrication techniques, sensing mechanisms, and will also discuss various future opportunities in this research direction.

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Platinum incorporated mordenite zeolite modified glassy carbon electrode used for selective electrochemical detection of mercury ions

Cited by 47 publications

References 52 publications

Synthesis of BiOI/Mordenite Composites for Photocatalytic Treatment of Organic Pollutants Present in Agro-Industrial Wastewater

Synthesis of BiOI/Mordenite Composites for Photocatalytic Treatment of Organic Pollutants Present in Agro-Industrial Wastewater

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

Electrochemical Devices to Monitor Ionic Analytes for Healthcare and Industrial Applications

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