NDLI: Electrochemical synthesis of polyaniline in surface-attached poly(acrylic acid) network, and its application to the electrocatalytic oxidation of ascorbic acid

Content Provider	Springer Nature Link
Author	Tang, Yanhong Pan, Kexue Wang, Xiaojian Liu, Chengbin Luo, Shenglian
Copyright Year	2010
Abstract	Acrylic acid was first electropolymerized on the surface of a gold electrode. Then, polyaniline (PANI) was electrodeposited on the poly(acrylic acid) (PAA) network to give a PANI–PAA composite film. Scanning electron microscopy and electrochemical studies confirmed the formation of PANI–PAA composite which exhibited excellent electroactivity over a wide pH range. The electro-oxidation of ascorbic acid (AA) was studied in detail. The modified electrode exhibits significantly reduced oxidation overpotential. The response towards AA is linear in the range 1.0 μM to 9.3 mM (R = 0.9997, n = 33) at a potential of 0.1 V (vs. SCE). The sensitivity is 207 μA mM-1 cm-2, and the detection limit is 1.0 μM (S/N = 3). Interferences by uric acid and dopamine are negligible. The electrode thus enables sensitive and selective determination of AA, with a performance superior to many other PANI–based ascorbate sensors.
Starting Page	231
Ending Page	237
Page Count	7
File Format	PDF
ISSN	00263672
Journal	Microchimica Acta
Volume Number	168
Issue Number	3-4
e-ISSN	14365073
Language	English
Publisher	Springer Vienna
Publisher Date	2010-01-26
Publisher Place	Vienna
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Polyaniline Poly(acrylic acid) Ascorbic acid Electrocatalysis Sensor Ecotoxicology Characterization and Evaluation of Materials Physical Chemistry Inorganic Chemistry Analytical Chemistry
Content Type	Text
Resource Type	Article
Subject	Analytical Chemistry

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