A Highly Receptive ZnO-Based Enzymatic Electrochemical Sensor for Glucose Sensing

Baruah, Saptaka; Maibam, Bidyarani; Borah, Chandra Kamal; Agarkar, Tanvi; Kumar, Ashvani; Kumar, Sanjeev

doi:10.1109/jsen.2021.3069303

Cited by 18 publications

(7 citation statements)

References 66 publications

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“…Following the cleaning of the electrode surface, an insulating layer was placed, with only 0.30 cm 2 of the electrode surface remaining uninsulated for modification and electrocatalytic activities. The working area can be adjusted using this insulating layer, as stated in the literature ( Baruah et al, 2021 ). The ultra-thin layer of zinc oxide seeds (45–55 nm) on the electrode surface was deposited using an optimal procedure that included soaking the electrode (FTO) surface with zinc acetate dihydrate (0.005 M) solution, washing it with methanol, and drying it with Ar gas.…”

Section: Resultsmentioning

confidence: 99%

Novel Synthesis of Sensitive Cu-ZnO Nanorod–Based Sensor for Hydrogen Peroxide Sensing

et al. 2022

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We aimed to synthesize sensitive electrochemical sensors for hydrogen peroxide sensing by using zinc oxide nanorods grown on a fluorine-doped tin oxide electrode by using the facial hydrothermal method. It was essential to keep the surface morphology of the material (nanorods structure); due to its large surface area, the concerned material has enhanced detection ability toward the analyte. The work presents a non-enzymatic H2O2 sensor using vertically grown zinc oxide nanorods on the electrode (FTO) surfaces with Cu nanoparticles deposited on zinc oxide nanorods to enhance the activity. Scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), energy-dispersive X-Ray (EDX), X-ray diffraction (XRD), and electrochemical methods were used to characterize copper–zinc oxide nanorods. In addition to the high surface area, the hexagonal Cu-ZnO nanorods exhibited enhanced electrochemical features of H2O2 oxidation. Nanorods made from Cu-ZnO exhibit highly efficient sensitivity of 3415 μAmM−1cm−2 low detection limits (LODs) of 0.16 μM and extremely wide linear ranges (0.001–11 mM). In addition, copper-zinc oxide nanorods demonstrated decent reproducibility, repeatability, stability, and selectivity after being used for H2O2 sensing in water samples with an RSD value of 3.83%. Cu nanoparticles decorated on ZnO nanorods demonstrate excellent potential for the detection of hydrogen peroxide, providing a new way to prepare hydrogen peroxide detecting devices.

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Section: Resultsmentioning

confidence: 99%

Novel Synthesis of Sensitive Cu-ZnO Nanorod–Based Sensor for Hydrogen Peroxide Sensing

et al. 2022

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“…The Au–ZnO nanorods allowed for a high sensitivity of 4416 μA mM −1 cm −2 , a low LOD of 0.12 μM, and a linear range of up to 15 mM. Baruah et al 146 reported Co and Fe codoped ZnO for glucose sensing. The PL intensity of the doped ZnO was reduced and it showed better conductivity than the pristine ZnO.…”

Section: Classification Of Biosensorsmentioning

confidence: 99%

A review on 2D-ZnO nanostructure based biosensors: from materials to devices

et al. 2023

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“…ZnO is a functional semiconductor with high chemical stability and mechanical plasticity, which can be used as an efficient electron conduction catalyst and has been widely used in enzymatic biosensors. (94) In recent years, ZnO enzyme-free glucose sensors have also attracted wide attention. (79,(95)(96)(97) Hsu et al synthesized ZnO nanowires on a glass substrate using a hydrothermal process, and then decorated the nanowires with Pt nanoparticles to fabricate a working electrode for an enzyme-free glucose biosensor.…”

Section: Enzyme-free Glucose Sensors Based On Znomentioning

confidence: 99%

Recent Advances in Materials for Enzyme-free Electrochemical Glucose Sensors

Wang¹,

You²,

Liu³

et al. 2023

Sensors and Materials

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Glucose is not only the main energy source of living cells but also an important metabolic intermediate product of organisms. Its detection and analysis are of great significance in the diagnosis and treatment of human diseases, especially diabetes. We discuss the progress in research on electrochemical enzyme-free glucose sensors in recent years and the electrochemical mechanism and glucose-sensing properties of various materials, including metals, metal oxides, and carbon nanomaterials and their nanocomposites. Finally, the prospects for the development of enzyme-free glucose sensors are outlined.

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A Highly Receptive ZnO-Based Enzymatic Electrochemical Sensor for Glucose Sensing

Cited by 18 publications

References 66 publications

Novel Synthesis of Sensitive Cu-ZnO Nanorod–Based Sensor for Hydrogen Peroxide Sensing

Novel Synthesis of Sensitive Cu-ZnO Nanorod–Based Sensor for Hydrogen Peroxide Sensing

A review on 2D-ZnO nanostructure based biosensors: from materials to devices

Recent Advances in Materials for Enzyme-free Electrochemical Glucose Sensors

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