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Biomimetic oxidase sensor based on functionalized surface of carbon nanotubes and iron prophyrins for catechol detection.

Abstract：

:A novel and highly stable biomimetic oxidase sensor system was designed for catehol detection. FePP used as biomimetic horseradish peroxidase (HRP) was immobilized onto modified multi-walled carbon nanotubes (MWCNTs). Functional groups such as -OH, -NH2 and -COOH were introduced onto the surface of MWCNTs to provide biomimetic microenvironment for iron porphyrins (FePP). Stable biomimetic enzyme electrode has been developed to detect catechol as a simple, economical and efficient method. At optimal condition, the detection limit of OH-MWCNTs/FePP/Nafion was 3.754 × 10- 6 M. After stored at - 4 °C for 35 days, the oxidation current value still maintained 98.3% of initial activity. In repetitive nature test, relative standard deviation (RSD) of oxidation current remained within 1.0% after ten consecutive measurements in the same concentration of catechol solution, while most of reported oxidase sensor was within 2.0% under the same condition.

journal_name

Bioprocess Biosyst Eng

journal_title

Bioprocess and biosystems engineering

authors

Bin Z,Yanhong C,Jiaojiao X

doi

10.1007/s00449-018-2032-y

subject

Has Abstract

pub_date

2019-02-01 00:00:00

pages

279-290

issue

2

eissn

1615-7591

issn

1615-7605

pii

10.1007/s00449-018-2032-y

journal_volume

42

pub_type

杂志文章

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