pp. 539-548
S&M1089 Research Paper https://doi.org/10.18494/SAM.2015.1137 Published: August 11, 2015 Fabrication and Characterization of Titanium Dioxide-Cellulose Composite and Its Urea Biosensing Behavior [PDF] Kafy Abdullahil, Mohammad Maniruzzaman, Byung-Woo Kang and Jaehwan Kim (Received January 15, 2015; Accepted April 30, 2015) Keywords: cellulose, titanium dioxide, composite, urea, biosensor
In this paper, the fabrication of a titanium dioxide (TiO2)-cellulose composite and its urea biosensing behavior are reported. TiO2 nanoparticles were blended with the cellulose solution prepared by dissolving cotton pulp with a lithium chloride/N,N-dimethylacetamide solvent, and a TiO2-cellulose composite was fabricated. The enzyme urease was immobilized into the composite by using a physical adsorption method. The developed urea biosensor is highly sensitive at urea concentrations lower than 10 mM, whereas it maintains a linear response up to a urea concentration of 50 mM. The TiO2-cellulose composite is a potential candidate urea biosensor, which is inexpensive, flexible, and disposable.
Corresponding author: Jaehwan KimCite this article Kafy Abdullahil, Mohammad Maniruzzaman, Byung-Woo Kang and Jaehwan Kim, Fabrication and Characterization of Titanium Dioxide-Cellulose Composite and Its Urea Biosensing Behavior, Sens. Mater., Vol. 27, No. 7, 2015, p. 539-548. |