University of Oulu

Durairaj, V., Liljeström, T., Wester, N. et al. Role of nanocellulose in tailoring electroanalytical performance of hybrid nanocellulose/multiwalled carbon nanotube electrodes. Cellulose 29, 9217–9233 (2022).

Role of nanocellulose in tailoring electroanalytical performance of hybrid nanocellulose/multiwalled carbon nanotube electrodes

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Author: Durairaj, Vasuki1; Liljeström, Touko1; Wester, Niklas1;
Organizations: 1Department of Chemistry and Materials Science, School of Chemical Engineering, Aalto University, P.O. Box 16100, 00076, Aalto, Finland
2Department of Applied Physics, School of Science, Aalto University, P.O. Box 15100, 00076, Aalto, Finland
3SLAC National Accelerator Laboratory, Stanford Synchrotron Radiation Lightsource, Menlo Park, CA, 94025, USA
4Microelectronics Research Unit, Faculty of Information Technology and Electrical Engineering, University of Oulu, PO Box 4500, 90570, Oulu, Finland
5Department of Chemical and Metallurgical Engineering, School of Chemical Engineering, Aalto University, P.O. Box 16200, 00076, Aalto, Finland
6Sustainable Products and Materials, VTT Technical Research Centre of Finland, P.O. Box 1000, 02044, Espoo, Finland
7Department of Electrical Engineering and Automation, School of Electrical Engineering, Aalto University, PO Box 13500, 00076, Aalto, Finland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 4 MB)
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Language: English
Published: Springer Nature, 2022
Publish Date: 2023-06-06


Nanocellulose has emerged as a promising green dispersant for carbon nanotubes (CNTs), and there is an increasing trend in developing nanocellulose/CNT hybrid materials for electrochemical detection of various small molecules. However, there have been very few comprehensive studies investigating the role of nanocellulosic material properties upon the electroanalytical performance of the resultant hybrid electrodes. In this work, we demonstrate the influence of both nanocellulose functionalization and geometry, utilizing sulfated cellulose nanocrystals, sulfated cellulose nanofibers, and TEMPO-oxidized cellulose nanofibers. Transmission electron microscopy tomography enables direct visualization of the effect of nanocellulosic materials on the hybrid architectures. High resolution X-ray absorption spectroscopy verifies that the chemical nature of CNTs in the different hybrids is unmodified. Electroanalytical performances of the different nanocellulose/CNT hybrid electrodes are critically evaluated using physiologically relevant biomolecules with different charge such as, dopamine (cationic), paracetamol (neutral), and uric acid (anionic). The hybrid electrode containing fibrillar nanocellulose geometry with a high degree of sulfate group functionalization provides the highest electroanalytical sensitivity and strongest enrichment towards all studied analytes. These results clearly demonstrate for the first time, the extent of tailorability upon the electroanalytical response of nanocellulose/CNT hybrid electrodes towards different biomolecules, offered simply by the choice of nanocellulosic materials.

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Series: Cellulose
ISSN: 0969-0239
ISSN-E: 1572-882X
ISSN-L: 0969-0239
Volume: 29
Issue: 17
Pages: 9217 - 9233
DOI: 10.1007/s10570-022-04836-8
Type of Publication: A1 Journal article – refereed
Field of Science: 221 Nanotechnology
116 Chemical sciences
Funding: Open Access funding provided by Aalto University. This study was funded by the Academy of Finland′s Flagship Programme under Projects Nos. 318890 and 318891 (Competence Center for Materials Bioeconomy, FinnCERES). Author SS, was additionally funded by Walter Ahlström Foundation and European Union’s Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie Grant Agreement No 841621.
EU Grant Number: (841621) TACOMA - Towards Application specific tailoring of CarbOn nanoMAterials
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