Open AccessElectrokinetic Carbohydrates Sensor by Streaming Potential with 3MPBA-PtNPs-CNTs Composite Material
Author(s) -
Carolina Silva-Carrillo,
Rosa María FelixNavarro,
Sergio PérezSicairos,
Balter Trujillo-Navarrete,
F. ParaguayDelgado,
Shu Wai Lin-Ho,
Edgar Alonso ReynosoSoto
Publication year - 2020
Publication title -
journal of the electrochemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.258
H-Index - 271
eISSN - 1945-7111
pISSN - 0013-4651
DOI - 10.1149/1945-7111/ab788c
Subject(s) - zeta potential , cyclic voltammetry , electrokinetic phenomena , carbon nanotube , materials science , scanning electron microscope , chemical engineering , analytical chemistry (journal) , electrode , selectivity , transmission electron microscopy , nanoparticle , nanotechnology , chemistry , electrochemistry , chromatography , organic chemistry , composite material , catalysis , engineering
In this work, a sensitive and highly stable non-enzymatic glucose sensor is reported. It is based on self-assembled 3-mercaptophenylboronic acid (3MPBA) self-assembled on small Pt nanoparticles supported on a multi-wall carbon nanotubes (CNTs) surface. The materials characterization was performed by thermal analysis (TGA), scanning transmission electron microscopy (STEM), X-ray diffraction (XRD), cyclic voltammetry (CV), and Z potential measurements. Glucose and fructose evaluation was carried out by hydrodynamic zeta potential measurements using the streaming potential, presenting high selectivity to glucose in the alkaline medium. The 3MPBA-PtNPs-CNTs electrode exhibit a linear response in the glucose concentration range of 0 to 10 mM, high sensitivity to 22.25 mV mM −1 , and ultra-low detection of 4.5 μ M.
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