Journal
MATERIALS RESEARCH EXPRESS
Volume 1, Issue 2, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/2053-1591/1/2/025403
Keywords
MWCNTs; phytic acid; biosensor
Categories
Funding
- National Natural Science Foundation of China [21073121]
- Science Foundation of Shanghai Normal University [SK201330]
- PCSIRT [IRT1269]
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The poor dispersion of carbon based nanomaterials without strong acid pretreatment in aqueous solution is a fundamental problem, limiting its applications in biology-related fields. A good dispersion of multi-walled carbon nanotubes (MWCNTs) in water was realized by 50 wt.% phytic acid (PA) solution. As an application case, the PA-MWCNTs dispersion in aqueous solution was used for the immobilization of horseradish peroxidase (HRP) and its direct electrochemistry was realized. The constructed biosensor has a sound limit of detection, wide linear range, and high affinity for hydrogen peroxide (H2O2) as well as being free from interference of co-existing electro-active species.
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