Nanosized zeolites as a perspective material for conductometric biosensors creation

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10.1186:s11671-015-0911-6.pdf

Date

2015-05-07

Author

Kucherenko, Ivan
Soldatkin, Oleksandr
Kasap, Berna Ozansoy
Kirdeciler, Salih Kaan
Akata Kurç, Burcu
Jaffrezic-Renault, Nicole
Soldatkin, Alexei
Lagarde, Florence
Dzyadevych, Sergei

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In this work, the method of enzyme adsorption on different zeolites and mesoporous silica spheres (MSS) was investigated for the creation of conductometric biosensors. The conductometric transducers consisted of gold interdigitated electrodes were placed on the ceramic support. The transducers were modified with zeolites and MSS, and then the enzymes were adsorbed on the transducer surface. Different methods of zeolite attachment to the transducer surface were used; drop coating with heating to 200 degrees C turned out to be the best one. Nanozeolites beta and L, zeolite L, MSS, and silicalite-1 (80 to 450 nm) were tested as the adsorbents for enzyme urease. The biosensors with all tested particles except zeolite L had good analytical characteristics. Silicalite-1 (450 nm) was also used for adsorption of glucose oxidase, acetylcholinesterase, and butyrylcholinesterase. The glucose and acetylcholine biosensors were successfully created, whereas butyrylcholinesterase was not adsorbed on silicalite-1. The enzyme adsorption on zeolites and MSS is simple, quick, well reproducible, does not require use of toxic compounds, and therefore can be recommended for the development of biosensors when these advantages are especially important.

Subject Keywords

Zeolite, Silicalite-1, Mesoporous silica spheres, Enzyme adsorption, Urease, Acetylcholinesterase, Conductometric transducer, Biosensor

URI

https://hdl.handle.net/11511/30713

Journal

NANOSCALE RESEARCH LETTERS

DOI

https://doi.org/10.1186/s11671-015-0911-6

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Graduate School of Natural and Applied Sciences, Article

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Citation Formats

I. Kucherenko et al., “Nanosized zeolites as a perspective material for conductometric biosensors creation,” NANOSCALE RESEARCH LETTERS, pp. 0–0, 2015, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/30713.