Fabrication of NiO Nanostructure and Urease-based Amperometric Biosensor for Urea Detection
- Authors
- Mai, Hien Duy; Sung, Gun Yong; Yoo, Hyo jong
- Issue Date
- Sep-2015
- Publisher
- Royal Society of Chemistry
- Citation
- RSC Advances, v.5, no.96, pp.78807 - 78814
- Indexed
- SCIE
SCOPUS
- Journal Title
- RSC Advances
- Volume
- 5
- Number
- 96
- Start Page
- 78807
- End Page
- 78814
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/17059
- DOI
- 10.1039/c5ra14103f
- ISSN
- 2046-2069
- Abstract
- Uniform nanostructured nickel-based coordination polymer particles with multilayered morphologies (mL-NiCPPs) were successfully fabricated through a two-step heating process. To increase the surface area by reducing the size of mL-NiCPPs, pyridine and acetic acid were added as size modulators during the growth process. The resultant coordination polymer nanoparticles were then calcinated at a controlled temperature in order to produce nickel oxide nanostructures (mL-NiOs), which have a regular multilayered morphology and a high degree of crystallinity. Moreover, the mL-NiOs had a relatively high BET specific surface area (112 m(2) g(-1)) and a well-defined pore size (10 nm), hence exhibited significant potential for use in a variety of applications. The synthesized mL-NiOs were successfully deposited onto indium tin oxide (ITO) serving as an efficient matrix for the immobilization of urease (Ur), which was used for urea detection. The prepared bioelectrode (Ur/NiO/ITO/glass) was employed for urea sensing using cyclic voltammetry (CV). The prepared electrodes showed a high sensitivity and a linear dependence of the current on the urea concentration.
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Collections - COLLEGE OF ENGINEERING SCIENCES > DEPARTMENT OF MATERIALS SCIENCE AND CHEMICAL ENGINEERING > 1. Journal Articles
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