NDLI: Electrochemical creatinine sensor based on a glassy carbon electrode modified with a molecularly imprinted polymer and a Ni@polyaniline nanocomposite

Content Provider	Springer Nature Link
Author	Rao, Hanbing Lu, Zhiwei Ge, Hongwei Liu, Xin Chen, Bingyao Zou, Ping Wang, Xianxiang He, Hua Zeng, Xianyin Wang, Yanying
Copyright Year	2016
Abstract	The article describes an electrochemical creatinine sensor that is based on a glassy carbon electrode (GCE) modified with a magnetic molecularly imprinted polymer (MMIP) and a composite consisting of nickel nanoparticles and polyaniline that was prepared by electropolymerization. Aniline and methacrylic acid were used as the bifunctional monomers, and creatinine was used as the template molecule. Electrochemical deposition was performed via cyclic voltammetry in the potential range from −0.3 V to 1.2 V and at a scan rate of 50 mV·s-1 over 20 cycles. The Ni@PANI NPs were characterized by scanning electron microscopy, FTIR, X-ray diffraction and thermogravimetric analysis. The Ni@PANI-modified GCE was characterized by cyclic voltammetry, electrochemical impedance spectroscopy and differential pulse voltammetry. Under optimized conditions, the sensor displays a linear response to creatinine in the 40 to 800 nM concentration range, with a 0.2 nM detection limit. The method was successfully applied to the detection of creatinine in urine mimic and in spiked urine samples. Graphical abstract Schematic of the preparation and function of an electrochemical sensor for creatinine. A glassy carbon electrode (GCE) was modified with a magnetic molecularly imprinted polymer (MMIP), nickel nanoparticles and polyaniline. The MMIP can specifically recognize creatinine to which it responds in the 40 to 800 nM concentration range.
Starting Page	261
Ending Page	269
Page Count	9
File Format	PDF
ISSN	00263672
Journal	Microchimica Acta
Volume Number	184
Issue Number	1
e-ISSN	14365073
Language	English
Publisher	Springer Vienna
Publisher Date	2016-11-16
Publisher Place	Vienna
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Electropolymerization Differential pulse voltammerty Magnetic particles Polymethacrylate Randles equivalent circuit Urine analysis Nanochemistry Nanotechnology Characterization and Evaluation of Materials Analytical Chemistry Microengineering
Content Type	Text
Resource Type	Article
Subject	Analytical Chemistry

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