Projects per year
We introduce a composite membrane comprised of multiwalled carbon nanotubes (MWCNTs) dispersed in a matrix of sulfated nanofibrillar cellulose (SNFC) and Nafion. The high negative charge densities of the SNFC and Nafion ionomers enhance the cationic selectivity of the composite. The composite is characterized by scanning electron (SEM) and transmission electron (TEM) microscopies as well as Fourier transform infrared (FTIR) and Raman spectroscopies. Tetrahedral amorphous carbon (ta-C) electrodes modified with the composite are investigated as potential dopamine (DA) electrochemical sensors. The composite-modified electrodes show significant selectivity and sensitivity toward DA in the presence of ascorbic acid (AA) and uric acid (UA) in physiologically relevant concentrations. A linear dopamine detection range of 0.05-100 μM with detection limits of 65 nM in PBS and 107 nM in interferent solution was determined using 100 mV/s cyclic voltammetry (CV) measurements. These results highlight the potential of the composite membrane for in vivo detection of neurotransmitters.
|Journal||Journal of Physical Chemistry C|
|Publication status||Published - 1 Jan 2019|
|MoE publication type||A1 Journal article-refereed|
FingerprintDive into the research topics of 'Multiwalled Carbon Nanotubes/Nanofibrillar Cellulose/Nafion Composite-Modified Tetrahedral Amorphous Carbon Electrodes for Selective Dopamine Detection'. Together they form a unique fingerprint.
- 1 Finished
HYBER: The Academy of Finland's Centre of Excellence in Molecular Engineering of Biosynthetic Hybrid Materials research (2014-2019)
Ikkala, O., Bertula, K., Cherian, T., Morits, M., Rissanen, S., Nonappa, N., Haataja, J., Toivonen, M., Poutanen, M., Sohrabi, F., Hynninen, V., Myllymäki, T. & Sanchez Sanchez, A.
01/01/2017 → 31/12/2019
Project: Academy of Finland: Other research funding
Bioeconomy Research Infrastructure
Jukka Seppälä (Manager)School of Chemical Engineering
Anna Rissanen (Manager)Aalto University
OtaNano – Low Temperature Laboratory
Alexander Savin (Manager)OtaNano