A simple and sensitive hydrogen peroxide detection with horseradish peroxidase immobilized on pyrene modified acid‐treated single‐walled carbon nanotubes

Şahin, Samet

doi:10.1002/jctb.6293

Cited by 17 publications

(2 citation statements)

References 31 publications

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“…Hitherto, the commonly used methods include ball milling and cutting at a low temperature by the ultramicrotome as well as high impact, and so on. ,− In some cases, CNTs can also be cut with electron beams and Joule heat. Normally, these methods belong to the electrical cutting. − Some typical aspects of the different approaches are discussed below.…”

Section: Physical Cutting Methodsmentioning

confidence: 99%

Cutting Methods and Perspectives of Carbon Nanotubes

Dai

Wang

2021

J. Phys. Chem. C

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Short carbon nanotubes have a large potential application value in medicine, electronic devices, and composites. Nevertheless, the length of carbon nanotubes prepared is inconsistent and long, which limits the application range of carbon nanotubes. To cope with this problem, different cutting methods are used to fabricate short carbon nanotubes, which greatly improves the application of carbon nanotubes. Recently, much literature had described the cutting methods of these short carbon nanotubes. Here we attempt to sort out and summarize the relevant literature and highlight the most important advances in cutting methods and machining quality of carbon nanotubes. Special attention is paid to the most common and important physical cutting, chemical cutting, and physical/chemical cutting methods. Significantly, the physical chemistry processes of cutting single-walled carbon nanotubes and multiwalled carbon nanotubes are reviewed and discussed. Additionally, a summary chart is given for readers to understand the cutting methods, application fields, and cutting quality assessments of carbon nanotubes. These can enable researchers in this field to have a deeper understanding of the physical-chemical knowledge and application fields involved in the cutting process of carbon nanotubes. Finally, the conclusions of this paper are summarized, and the current technical challenges and future research opportunities of cutting methods based on carbon nanotubes have been prospected.

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Section: Physical Cutting Methodsmentioning

confidence: 99%

Cutting Methods and Perspectives of Carbon Nanotubes

Dai

Wang

2021

J. Phys. Chem. C

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“…For example, Devaraj et al [24] used graphene oxide-chitosan gold nanocomposites as electrode platforms for the immobilization of HRP to investigate the second generation of enzymatic biosensors. A technique for developing an enzymatic biosensor based on HRP immobilized on single-walled carbon nanotubes treated with acid has been proposed by Sahin [25]. The expansion of the global industry has resulted in a significant increase in the presence of a variety of pollutants in the environment that can negatively impact both human health and the environment.…”

Section: Introductionmentioning

confidence: 99%

Support Materials of Organic and Inorganic Origin as Platforms for Horseradish Peroxidase Immobilization: Comparison Study for High Stability and Activity Recovery

Bilal,

Degorska,

Szada

et al. 2024

Molecules

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In the presented study, a variety of hybrid and single nanomaterials of various origins were tested as novel platforms for horseradish peroxidase immobilization. A thorough characterization was performed to establish the suitability of the support materials for immobilization, as well as the activity and stability retention of the biocatalysts, which were analyzed and discussed. The physicochemical characterization of the obtained systems proved successful enzyme deposition on all the presented materials. The immobilization of horseradish peroxidase on all the tested supports occurred with an efficiency above 70%. However, for multi-walled carbon nanotubes and hybrids made of chitosan, magnetic nanoparticles, and selenium ions, it reached up to 90%. For these materials, the immobilization yield exceeded 80%, resulting in high amounts of immobilized enzymes. The produced system showed the same optimal pH and temperature conditions as free enzymes; however, over a wider range of conditions, the immobilized enzymes showed activity of over 50%. Finally, a reusability study and storage stability tests showed that horseradish peroxidase immobilized on a hybrid made of chitosan, magnetic nanoparticles, and selenium ions retained around 80% of its initial activity after 10 repeated catalytic cycles and after 20 days of storage. Of all the tested materials, the most favorable for immobilization was the above-mentioned chitosan-based hybrid material. The selenium additive present in the discussed material gives it supplementary properties that increase the immobilization yield of the enzyme and improve enzyme stability. The obtained results confirm the applicability of these nanomaterials as useful platforms for enzyme immobilization in the contemplation of the structural stability of an enzyme and the high catalytic activity of fabricated biocatalysts.

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Laser‐Induced Graphene on Paper toward Efficient Fabrication of Flexible, Planar Electrodes for Electrochemical Sensing

Pinheiro

Silvestre

Coelho

et al. 2021

Adv Materials Inter

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Laser irradiation to induce networks of graphene‐based structures toward cost‐effective, flexible device fabrication is a highly pursued area, with applications in various polymeric substrates. This work reports the application of this approach toward commonly available, eco‐friendly, low‐cost substrates, namely, chromatographic and office papers. Through an appropriate chemical treatment with sodium tetraborate as a fire‐retardant agent, photothermal conversion to porous laser‐induced graphene (LIG) on paper is achieved. Raman peaks are identified, with I2D/IG and ID/IG peak ratios of 0.616 ± 0.095 and 1.281 ± 0.173, showing the formation of multilayered graphenic material, exhibiting sheet resistances as low as 56.0 Ω sq–1. Coplanar, LIG‐based, three‐electrode systems (working, counter and reference electrodes) are produced and characterized, showing high current Faradaic oxidation and reduction peaks, translating in high electrochemical active area, doubling the geometric area. Good electron transfer kinetics performed exclusively with on‐chip measurements are reached, with k0 values as high as 7.15 × 10–4 cm s–1. Proof‐of‐concept, amperometric, enzymatic glucose biosensors are developed, exhibiting good analytical performance in physiologically relevant glucose levels, with results pointing to the applicability of paper‐based LIG toward efficient, disposable electrochemical sensor development, increasing their sustainability and accessibility, while simplifying their production and reducing their cost.

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A simple and sensitive hydrogen peroxide detection with horseradish peroxidase immobilized on pyrene modified acid‐treated single‐walled carbon nanotubes

Cited by 17 publications

References 31 publications

Cutting Methods and Perspectives of Carbon Nanotubes

Cutting Methods and Perspectives of Carbon Nanotubes

Support Materials of Organic and Inorganic Origin as Platforms for Horseradish Peroxidase Immobilization: Comparison Study for High Stability and Activity Recovery

Laser‐Induced Graphene on Paper toward Efficient Fabrication of Flexible, Planar Electrodes for Electrochemical Sensing

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