Electrochemical detection of ascorbic acid with chemically functionalized carbon nanofiber/β-cyclodextrin composite

被引：23

作者：

Aryal, Krishna Prasad ^{[1
]}

Jeong, Hae Kyung ^{[1
,2
]}

机构：

[1] Daegu Univ, Inst Basic Sci, Dept Phys, Gyongsan 38453, South Korea

[2] Daegu Univ, Inst Ind & Tech, Dept Mat Energy Sci & Engn, Gyongsan 38453, South Korea

来源：

CHEMICAL PHYSICS LETTERS | 2020年 / 757卷

关键词：

Carbon nanofiber; Functionalization; beta-cyclodextrin; Ascorbic acid; Biosensor; URIC-ACID; GRAPHITE OXIDE; DOPAMINE;

D O I：

10.1016/j.cplett.2020.137881

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We modified carbon nanofiber (CNF) with chemical oxidation method and functionalized with beta-cyclodextrin (beta CD) as for the electrochemical detection of ascorbic acid. Chemical oxidation introduced new hydrophilic oxygen functional groups into CNF, resulting that wettability, dispersion and reactivity are enhanced. Furthermore, it has increased the functionalization of beta CD over oxidized CNF surface. As a result, synthesized electrode showed high sensitivity (0.1 mu A/mu M) and excellent selectivity with low detection limit (0.9 mu M) in the detection of ascorbic acid. The simple chemical oxidation of CNF followed by the functionalization with beta CD resulted excellent electrochemical performance in the detection of ascorbic acid.

引用

页数：6

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