Nickel/cobalt oxide-decorated 3D graphene nanocomposite electrode for enhanced electrochemical detection of urea
- Authors
- Nhi Sa Nguyen; Das, Gautam; Yoon, Hyon Hee
- Issue Date
- 15-Mar-2016
- Publisher
- ELSEVIER ADVANCED TECHNOLOGY
- Keywords
- Urea sensor; Non-enzymatic; Ni-Co oxide; 3D graphene; Urine
- Citation
- BIOSENSORS & BIOELECTRONICS, v.77, pp.372 - 377
- Journal Title
- BIOSENSORS & BIOELECTRONICS
- Volume
- 77
- Start Page
- 372
- End Page
- 377
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/8464
- DOI
- 10.1016/j.bios.2015.09.046
- ISSN
- 0956-5663
- Abstract
- A NiCo2O4 bimetallic electro-catalyst was synthesized on three-dimensional graphene (3D graphene) for the non-enzymatic detection of urea. The structural and morphological properties of the NiCo2O4/3D graphene nanocomposite were characterized by X-ray diffraction, Raman spectroscopy, and scanning electron microscopy. The NiCo2O4/3D graphene was deposited on an indium tin oxide (ITO) glass to fabricate a highly sensitive urea sensor. The electrochemical properties of the prepared electrode were studied by cyclic voltammetry. A high sensitivity of 166 mu A mM(-1) cm(-2) was obtained for the NiCo2O4/3D graphene/ITO sensor. The sensor exhibited a linear range of 0.06-0.30 mM (R-2=0.998) and a fast response time of approximately 1.0 s with a detection limit of 5.0 mu M. Additionally, the sensor exhibited high stability with a sensitivity decrease of only 5.5% after four months of storage in ambient conditions. The urea sensor demonstrates feasibility for urea analysis in urine samples. (C) 2015 Elsevier B.V. All rights reserved.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - 공과대학 > 화공생명공학과 > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/8464)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.