Highly sensitive glucose biosensor using new glucose oxidase based biocatalyst

Christwardana, Marcelinus; Ji, Jungyeon; Chung, Yongjin; Kwon, Yongchai

doi:10.1007/s11814-017-0224-9

Cited by 50 publications

(15 citation statements)

References 32 publications

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“…Although the superior properties of CNT, such as excellent electric conductivity and chemical stability, may promote the desirable redox reaction of KI in catholyte, EE of AORFBs using MWCNT@CF and CA-CNT@CF was lower than that of AORFB using pristine CF. [53][54][55][56] This is because the mass transfer and electron transfer resistance of MWCNT@CF and CA-CNT@CF are too high. These drawbacks are probably because the amount and ratio of Nafion solution and catalysts applied are not optimized.…”

Section: The Performances Of Aorfbs Using Nq-oh and Ki As Redox Couplementioning

confidence: 99%

Aqueous organic redox flow batteries using naphthoquinone and iodide maintaining pH of electrolytes desirably by adoption of carboxylic acid functionalized carbon nanotube catalyst

Park

Lee

Kwon

2021

Intl J of Energy Research

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Section: The Performances Of Aorfbs Using Nq-oh and Ki As Redox Couplementioning

confidence: 99%

Aqueous organic redox flow batteries using naphthoquinone and iodide maintaining pH of electrolytes desirably by adoption of carboxylic acid functionalized carbon nanotube catalyst

Park

Lee

Kwon

2021

Intl J of Energy Research

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“…In the analyses performed, it has been shown that high-performance glucose biosensor can be developed with excellent properties such as high catalytic activity, and high chemical stability of CNTs-modified hybrid material. Additionally, it has been proven that biosensors can be used effectively for hypoglycemia and diabetes real patients [85].…”

Section: Glucose Biosensors Based On Functionalized Cntsmentioning

confidence: 99%

Nano-carbons in biosensor applications: an overview of carbon nanotubes (CNTs) and fullerenes (C60)

2020

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Recently, the use of carbon nanotubes (CNTs) and fullerenes in the design of new biosensors have attracted great interest in the development of carbon nanomaterials. Due to the superior properties of CNTs and fullerenes, the use of sensor components allows the development of reliable, accurate and fast biosensors. Depending on the types of target molecules, the development and application areas of the sensors vary. This review summarizes the role of CNTs and fullerenes in the development of biosensors in different application areas. Considering the difference between other members of the nano-carbon family, we explain why CNTs are used more widely in biosensor applications and why fullerenes have high potentials in these areas of application. Moreover, we focused on investigating the function of these nano-carbons in the detection of various analytes in bio-sensing. By discussing the challenges and future expectations, we have put forward a perspective that may help synthesize advanced composites in the development of new generation designs in biosensor applications.

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“…In this condition, protons and electrons from GOR were used for the reduction reaction of FAD (FAD + 2H + + 2e − → FADH 2 ) and made the background current shifted upward. At the same time, GOx converted the oxygen from glucose to H 2 O 2 (O 2 + 2H + + 2e − → H 2 O 2 ) [32]. The changes in current, due to these reactions, are usually the signals detected by glucose biosensors.…”

Section: Catalyst Structurementioning

confidence: 99%

Electrochemical Study of Enzymatic Glucose Sensors Biocatalyst: Thermal Degradation after Long-Term Storage

Christwardana

Frattini

2018

Chemosensors

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The thermal degradation related to stability in long-term storage of a carbon nanotube-based biosensor has been investigated. The effect of storage temperature on detachment and denaturation of glucose oxidase (GOx) biocatalyst has been proved. The carbon nanotubes (CNTs) coated with polyethyleneimine (PEI) as entrapping polymer to attract more GOx to form a durable and layered CNT/PEI/GOx structure is used for long-term storage to minimize GOx detachment from the structure and minimize the possibility of enzyme and protein denaturation. After 120 days, the glucose response of the CNT/PEI/GOx biosensor stored under 4°C is preserved up to 66.7% of its initial value, while under a 25 °C storage the response is maintained up to 41.7%. The enzyme coverage activity of CNT/PEI/GOx stored at 4 °C and 25 °C has decreased by 31.1% and 51.4%, respectively. Denaturation and detachment of GOx are the common causes of thermal degradation in biosensors under improper storage temperatures, but the presence of PEI in the structure can slow-down these phenomena. Moreover, the electrons transfer constant of CNT/PEI/GOx biocatalyst stored at 4 °C and 25 °C were 7.5 ± 0.5 s−1 and 6.6 ± 0.3 s−1, respectively, indicating that also electrons mobility is damaged by detachment and denaturation of enzyme protein and the detection of glucose from the glucose oxidation reaction (GOR) is compromised.

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Highly sensitive glucose biosensor using new glucose oxidase based biocatalyst

Cited by 50 publications

References 32 publications

Aqueous organic redox flow batteries using naphthoquinone and iodide maintaining pH of electrolytes desirably by adoption of carboxylic acid functionalized carbon nanotube catalyst

Aqueous organic redox flow batteries using naphthoquinone and iodide maintaining pH of electrolytes desirably by adoption of carboxylic acid functionalized carbon nanotube catalyst

Nano-carbons in biosensor applications: an overview of carbon nanotubes (CNTs) and fullerenes (C60)

Electrochemical Study of Enzymatic Glucose Sensors Biocatalyst: Thermal Degradation after Long-Term Storage

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