Potentiometric polyphenol oxidase biosensor for sensitive determination of phenolic micropollutant in environmental samples

Yashas, Shivamurthy Ravindra; Sandeep, S.; Shivakumar, Ballagere Puttaraju; Swamy, Ningappa Kumara

doi:10.1007/s11356-019-05495-2

Cited by 21 publications

(2 citation statements)

References 42 publications

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“…1 At present, the main detection methods include mass spectrometry, electrolysis, biological immunoassay, colorimetric detection, etc. 2 The colorimetric detection operation is simple and low-cost and has high detection sensitivity, high selectivity and anti-interference ability. 3 Shu et al 4 used TMB (3,3′,5,5′-tetramethylbenzidine) as a colorimetric probe to detect ascorbic acid (AA).…”

Section: Introductionmentioning

confidence: 99%

A novel bio-template route to synthesize enzyme-immobilized MOF/LDH tubular magnetic micromotors and their application in water treatment

Yang,

Liu,

Gao

et al. 2024

Environ. Sci.: Nano

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Section: Introductionmentioning

confidence: 99%

A novel bio-template route to synthesize enzyme-immobilized MOF/LDH tubular magnetic micromotors and their application in water treatment

Yang,

Liu,

Gao

et al. 2024

Environ. Sci.: Nano

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“…Polymer nanocomposites have drawn immense attention of researchers from different fields due to their special properties such as light weight, low oxidation, ease of processability, long term stability and tailorable electrical, mechanical and electrochemical properties 1–5 . The incorporation of nanostructured materials as fillers into conventional polymers imparts extra‐ordinary characteristics that suit photonic and optoelectric applications 6 .…”

Section: Introductionmentioning

confidence: 99%

Graphene nanoribbon doped PVA nanocomposites for improved UVC blocking and luminescence down‐shifting applications

Swamy,

Mohana,

Madhukar

2023

Polymers for Advanced Techs

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Graphene nanoribbon (GNR) is quasi‐one dimensional carbon based nanomaterial, distinct from graphene and less explored nanofiller in optical and optoelectronic applications. Herein flexible poly vinyl alcohol (PVA) nanocomposites of 0, 0.25, 0.5 and 0.75 wt % compositions of GNR were prepared by using solution intercalation technique and characterized by spectroscopic methods to assess their structural and optical characteristics. The characterization of PVA@GNR nanocomposites revealed Vander Waals binding of GNR to PVA chains and also considerable crystallographic changes in PVA matrix upon the incorporation of GNR. The optical investigations showed UV‐visible absorption in the wavelength range of 200–280 and 350–520 nm which enhanced on increase in GNR dopant concentration. The decrease in the optical band gap and Urbach energy was also observed for the nanocomposites with increase in dopant concentrations thereby suggesting the formation of localized states in the forbidden band region. The refractive index, absorption coefficient, extinction coefficient and optical conductivity of PVA nanocomposites showed excellent agreement with the band gap revelations and indicated UVC light blocking properties in the wavelength of 200–280 nm. Further, the GNR incorporated PVA nanocomposites exhibited improved thermal stability, wettability transitions (hydrophilic to near hydrophilic) and excellent luminescent down‐conversion properties with a high Stokes's shift (100 nm) compared to pristine PVA nanocomposites. The study concludes that the proposed PVA@GNR nanocomposites can ideally fit optical and photovoltaic device applications owing to their transparency coupled with UV blocking and luminescence down‐shifting attributes.

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Mesoporous WO₃‐Dot‐Decorated Flexible Electrodes for the Determination of Industrial Pollutants

Koyappayil,

Seok,

Choi

et al. 2024

Energy & Environ Materials

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This study demonstrates the fabrication of mesoporous tungsten trioxide (WO3)‐decorated flexible polyimide (PI) electrodes for the highly sensitive detection of catechol (CC) and hydroquinone (HQ), two environmental pollutants. Organic–inorganic composite dots are formed on flexible PI electrodes using evaporation‐induced self‐assembly (EISA) and electrospray methods. The EISA process is induced by a temperature gradient during electrospray, and the heated substrate partially decomposes the organic parts etched by O2 plasma, creating mesoporous structures. Differential pulse voltammetry and cyclic voltammetry demonstrate a linear correlation between analyte concentration and the electrochemical response. Computational studies support the spontaneous adsorption of CC and HQ molecules on model WO3 surfaces. The proposed sensor shows high sensitivity, a wide linear range, and a low detection limit for both individual and simultaneous determination of CC and HQ. Real sample analysis on river water confirms practical applicability. The WO3‐decorated PI electrode presents an efficient and reliable approach for detecting these pollutants, contributing to environmental safety measures.

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Potentiometric polyphenol oxidase biosensor for sensitive determination of phenolic micropollutant in environmental samples

Cited by 21 publications

References 42 publications

A novel bio-template route to synthesize enzyme-immobilized MOF/LDH tubular magnetic micromotors and their application in water treatment

A novel bio-template route to synthesize enzyme-immobilized MOF/LDH tubular magnetic micromotors and their application in water treatment

Graphene nanoribbon doped PVA nanocomposites for improved UVC blocking and luminescence down‐shifting applications

Mesoporous WO₃‐Dot‐Decorated Flexible Electrodes for the Determination of Industrial Pollutants

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Potentiometric polyphenol oxidase biosensor for sensitive determination of phenolic micropollutant in environmental samples

Cited by 21 publications

References 42 publications

A novel bio-template route to synthesize enzyme-immobilized MOF/LDH tubular magnetic micromotors and their application in water treatment

A novel bio-template route to synthesize enzyme-immobilized MOF/LDH tubular magnetic micromotors and their application in water treatment

Graphene nanoribbon doped PVA nanocomposites for improved UVC blocking and luminescence down‐shifting applications

Mesoporous WO3‐Dot‐Decorated Flexible Electrodes for the Determination of Industrial Pollutants

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Product

Resources

About

Mesoporous WO₃‐Dot‐Decorated Flexible Electrodes for the Determination of Industrial Pollutants