Functionalization of MWCNTs for Bioelectrocatalysis by Bacterial Two-Domain Laccase from Catenuloplanes japonicus

Author:

Abdullatypov Azat12,Oskin Pavel3,Fedina Veronika3,Trubitsina Liubov4,Yakimovich Sofiya3,Shuvalova Ekaterina1,Verma Pradeep5ORCID,Dyachkova Tatyana6ORCID,Ponamoreva Olga3ORCID,Alferov Sergey13ORCID

Affiliation:

1. Biotechnology Department, Tula State University, Pr. Lenina 92, 300012 Tula, Russia

2. Institute of Basic Biological Problems RAS—A Separate Subdivision of Federal Research Centre Puschino Scientific Center for Biological Research RAS, Institutskaya Str., 2, 142290 Pushchino, Russia

3. Laboratory of Ecological and Medical Biotechnology, Tula State University, Friedrich Engels Street 157, 300012 Tula, Russia

4. Institute of Biochemistry and Physiology of Microorganisms RAS—A Separate Subdivision of Federal Research Centre Puschino Scientific Center for Biological Research RAS, Prospekt Nauki, 5, 142290 Pushchino, Russia

5. Department of Microbiology, Central University of Rajasthan Bandar Sindri, 613 E Haribhau Upadhaya Nagar, Ajmer 305817, India

6. Department of Technology and Methods of Nanoproducts Manufacturing, Tambov State Technical University, 106/5, Building 2, Sovetskaya Str., 392000 Tambov, Russia

Abstract

This study was carried out in order to assess several modifications of carbon nanotube-based nanomaterials for their applications in laccase electrodes and model biofuel cells. The modified MWCNTs served as adapters for the immobilization of laccase from Catenuloplanes japonicus VKM Ac-875 on the surface of electrodes made of graphite rods and graphite paste. The electrochemical properties of the electrodes were tested in linear and cyclic voltammetrical measurements for the determination of the redox potential of the enzyme and achievable current densities. The redox potential of the enzyme was above 500 mV versus NHE, while the highest current densities reached hundreds of µA/cm2. Model biofuel cells on the base of the laccase cathodes had maximal power values from 0.4 to 2 µW. The possibility of practical application of such BFCs was discussed.

Funder

Ministry of Science and Higher Education of the Russian Federation

Publisher

MDPI AG

Subject

General Materials Science,General Chemical Engineering

Cited by 1 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. A Prato Tour on Carbon Nanotubes: Raman Insights;Chemistry – A European Journal;2023-11-06

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