Multiwalled carbon nanotube-poly(vinyl alcohol)-glucose oxidase nanobiocomposites for amperometric sensing.
Novel nanobiocomposites multiwalled carbon nanotube-poly(vinyl alcohol)-glucose oxidase have been successfully prepared by a simple solution-evaporation method. The morphology and performance of the multiwalled carbon nanotube-poly(vinyl alcohol)-glucose oxidase film have been characterized by atomic force microscopy, cyclic voltammetry, and amperometry. The multiwalled carbon nanotube and glucose oxidase were observed to be homogeneously dispersed throughout the poly(vinyl alcohol) matrix. When compared with bare glassy carbon electrode, the sensitivity to hydrogen peroxide is greatly improved by about 115 times at multiwalled carbon nanotubepoly(vinyl alcohol) modified glassy carbon electrode. The glucose biosensor sensitivity was strongly influenced by the glucose oxidase concentration within the multiwalled carbon nanotube-poly(vinyl alcohol)-glucose oxidase composite.
Tsai
Yu-Chen
YC
Department of Chemical Engineering, National Chung Hsing University, Taichung 402, Taiwan, ROC.
Huang
Jing-Dae
JD
D015374:Biosensing Techniques; D002138:Calibration; D004563:Electrochemistry / Q000379:methods; D004566:Electrodes; D005898:Glass; D005947:Glucose / Q000737:chemistry*; D005949:Glucose Oxidase / Q000737:chemistry*; D006861:Hydrogen Peroxide / Q000737:chemistry; D018625:Microscopy, Atomic Force; D008956:Models, Chemical; D053761:Nanocomposites / Q000737:chemistry*; D036103:Nanotechnology / Q000379:methods*; D037742:Nanotubes, Carbon / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry; D011142:Polyvinyl Alcohol / Q000737:chemistry
D037742:Nanotubes, Carbon; D011108:Polymers; D011142:Polyvinyl Alcohol; D006861:Hydrogen Peroxide; D005949:Glucose Oxidase; D005947:Glucose