Electrochemical glucose sensor based on the glucose oxidase entrapped in chitosan immobilized onto laser-processed Au-Ti electrode

Lipińska, Wiktoria; Siuzdak, Katarzyna; Karczewski, Jakub; Dołęga, Anna; Grochowska, Katarzyna

doi:10.1016/j.snb.2020.129409

Cited by 58 publications

(34 citation statements)

References 44 publications

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“…The signals at 1659, 1599 and 1320 cm −1 are related to amide I (stretching vibration of C=O groups), II (bending vibration of N−H groups) and III (stretching vibration of C−N groups) bands, respectively [38] . Also, other peaks are detected as follows: bending vibration of −OH groups from primary alcohol (1420 cm −1 ), bending vibration of −OH groups from secondary alcohol (1378 cm −1 ), stretching vibration of C−O−C groups (1159 cm −1 ), stretching vibration of C−O groups from secondary alcohol (1076 cm −1 ), stretching vibration of C−N groups from primary amine (1030 cm −1 ) and stretching vibration of the β‐(1,4)‐glycosidic groups (895 cm −1 ) [38,40,41] . Compared with that in CS (1599 cm −1 ), the bending vibration of N−H groups shifts to 1604 cm −1 in the spectrum of the Ru/CS catalysts, due to the possible coordination of Ru 3+ ions with the −NH 2 groups in CS, in addition to the possible instrumental error.…”

Section: Resultsmentioning

confidence: 93%

Ru Nanoparticles Immobilized on Chitosan as Effective Catalysts for Boosting NH₃BH₃ Hydrolysis

Liu

Jiang

et al. 2021

ChemCatChem

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Developing an advanced heterogeneous catalyst is essential for realizing high‐performance ammonia borane (AB) hydrolysis, which is a safe and efficient way to generate hydrogen. In this work, a series of ruthenium (Ru) nanoparticles (NPs) immobilized on chitosan (CS) natural polymers are synthesized via an adsorption‐in situ reduction method. Various analytical techniques, including XRD, XPS, FT‐IR, SEM and TEM, are adopted to explore the structure‐catalytic performance relationships of the obtained catalysts for hydrolysis of AB. Benefitting from the possible interaction between Ru NPs and the amino and hydroxyl groups in CS, the as‐prepared catalysts exhibit excellent catalytic behavior for hydrogen generation from AB hydrolysis. Catalyzed by the optimal Ru/CS, the turnover frequency reaches up to 331.8 min−1 in NaOH solution at 303 K, and the corresponding apparent activation energy is 41.3 kJ mol−1, which are superior to many results previously reported. This work demonstrates that the obtained Ru/CS is a promising and efficient catalyst for the hydrolysis of solid hydrogen storage materials.

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Section: Resultsmentioning

confidence: 93%

Ru Nanoparticles Immobilized on Chitosan as Effective Catalysts for Boosting NH₃BH₃ Hydrolysis

Liu

Jiang

et al. 2021

ChemCatChem

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“…The peaks at 2923 cm À 1 and 2846 cm À 1 are attributed to the asymmetric and symmetric stretching vibrations of -CH 2 group, respectively, indicating that we have prepared graphene-gold nanohybrid materials. In the infrared spectra of the enzymatic electrode, two characteristic peaks at 1642 cm À 1 and 1548 cm À 1 originate from the amide I and amide II of GOx [21], which demonstrates that GOx has been successfully immobilized on the hybrid electrode we prepared.…”

Section: The Characteristics and Structure Of Fabricated Electrodementioning

confidence: 81%

Enzymatic Biosensor Based on One‐step Electrodeposition of Graphene‐gold Nanohybrid Materials and its Sensing Performance for Glucose

Miao¹,

Yan²,

Bi³

et al. 2021

Electroanalysis

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RGO/Au/Ni electrode was manufactured by a convenient, controllable, and environmental process, which was carried out by cyclic voltammetry (CV), and in this process, graphene-gold nanohybrid materials were simultaneously deposited on the nickel foam. Then the GOx was immobilized on the RGO/Au/Ni electrode by covalent bonding, and obtained the enzymatic biosensor. Scanning electron microscope (SEM) and Raman spectroscopy were adopted to confirm the microstructure of the fabricated RGO/Au/Ni electrode. Fourier transform infra-red spectroscopy (FT-IR) was used to characterize the prepared enzymatic electrode. CV, chronoamperometry, and electrochemical impedance spectroscopy (EIS) were used to characterize the electrochemical performance of the fabricated enzymatic biosensor. It is found that AuNPs were well dispersed on the wrinkled RGO sheets, and the biosensor had a high sensitivity to glucose (32.83 μA • mM À 1 • cm À 2 ) with a wide linear range (0.15�26.15 mM), the strengths of anti-interference ability, good stability, and repeatability, etc.

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“…Each CV curve shows a pair of redox peaks (Figure A). The electrocatalytic oxidation of glucose follows the following chemical equation: …”

Section: Results and Discussionmentioning

confidence: 99%

Tailoring Glucose Oxidase As Versatile Biocatalyst for High-Efficiency Electrochemical Sensing of Glucose in Honey

Zou

Feng

Wang

et al. 2021

ACS Food Sci. Technol.

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In this study, a new biosensor based on the chemical modification of glucose oxidase (GOx) was designed by tailoring the GOx molecular structure for the accurate detection of glucose. First, novel GOx was rapidly obtained by chemical modification technology, where a small molecule imidazolium bis(trifluoromethyl sulfonate)imine salt ([HO2CMMIm]NTf2) was covalently linked to GOx. Second, the modified GOx (mGOx) was immobilized onto common multiwalled carbon nanotubes (MWCNTs) and a glassy carbon electrode (GCE). Finally, the mGOx/MWCNTs/Nafion/GCE biosensor was applied to detect glucose in honey. The results showed that the developed biosensor had a fairly wide linear range (50 μM∼3 mM), a low glucose detection limit (0.58 μM), and better selectivity, storage stability (current retention of 97.09% within 2 weeks), and repeatability (n = 10, relative standard deviation (RSD) = 2.82%). Consequentially, the real sample experiments showed that mGOx/MWCNTs/Nafion/GCE was successful applied in the detection of glucose in honey.

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Electrochemical glucose sensor based on the glucose oxidase entrapped in chitosan immobilized onto laser-processed Au-Ti electrode

Cited by 58 publications

References 44 publications

Ru Nanoparticles Immobilized on Chitosan as Effective Catalysts for Boosting NH₃BH₃ Hydrolysis

Ru Nanoparticles Immobilized on Chitosan as Effective Catalysts for Boosting NH₃BH₃ Hydrolysis

Enzymatic Biosensor Based on One‐step Electrodeposition of Graphene‐gold Nanohybrid Materials and its Sensing Performance for Glucose

Tailoring Glucose Oxidase As Versatile Biocatalyst for High-Efficiency Electrochemical Sensing of Glucose in Honey

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Electrochemical glucose sensor based on the glucose oxidase entrapped in chitosan immobilized onto laser-processed Au-Ti electrode

Cited by 58 publications

References 44 publications

Ru Nanoparticles Immobilized on Chitosan as Effective Catalysts for Boosting NH3BH3 Hydrolysis

Ru Nanoparticles Immobilized on Chitosan as Effective Catalysts for Boosting NH3BH3 Hydrolysis

Enzymatic Biosensor Based on One‐step Electrodeposition of Graphene‐gold Nanohybrid Materials and its Sensing Performance for Glucose

Tailoring Glucose Oxidase As Versatile Biocatalyst for High-Efficiency Electrochemical Sensing of Glucose in Honey

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Ru Nanoparticles Immobilized on Chitosan as Effective Catalysts for Boosting NH₃BH₃ Hydrolysis

Ru Nanoparticles Immobilized on Chitosan as Effective Catalysts for Boosting NH₃BH₃ Hydrolysis