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- Title
Ni-Coated Diamond-like Carbon-Modified TiO 2 Nanotube Composite Electrode for Electrocatalytic Glucose Oxidation.
- Authors
Kang, Yi; Ren, Xuelei; Li, Yejun; Yu, Zhiming
- Abstract
In this paper, a Ni and diamond-like carbon (DLC)-modified TiO2 nanotube composite electrode was prepared as a glucose sensor using a combination of an anodizing process, electrodeposition, and magnetron sputtering. The composition and morphology of the electrodes were analyzed by a scanning electron microscope and energy dispersive X-ray detector, and the electrochemical glucose oxidation performance of the electrodes was evaluated by cyclic voltammetry and chronoamperometry. The results show that the Ni-coated DLC-modified TiO2 electrode has better electrocatalytic oxidation performance for glucose than pure TiO2 and electrodeposited Ni on a TiO2 electrode, which can be attributed to the synergistic effect between Ni and carbon. The glucose test results indicate a good linear correlation in a glucose concentration range of 0.99–22.97 mM, with a sensitivity of 1063.78 μA·mM−1·cm−2 and a detection limit of 0.53 μM. The results suggest that the obtained Ni-DLC/TiO2 electrode has great application potential in the field of non-enzymatic glucose sensors.
- Subjects
DIAMOND-like carbon; OXIDATION of glucose; GLUCOSE analysis; TITANIUM dioxide; ELECTRODE performance; ELECTRODES; SCANNING electron microscopes
- Publication
Molecules, 2022, Vol 27, Issue 18, p5815
- ISSN
1420-3049
- Publication type
Article
- DOI
10.3390/molecules27185815