A Niobium and Nitrogen Co-Doped DLC Film Electrode and Its Electrochemical Properties. Issue 14 (7th December 2017)

• Record Type: Journal Article
• Authors: Liu, Na; Zhu, Hekang; Wei, Qiuping; Long, Hangyu; Deng, Zejun; Yu, Zhiming; Xie, Youneng; Wang, Jian; Ma, Li; Zhou, Kechao
• Is Part Of: Journal of the Electrochemical Society. Volume 164:Issue 14(2017)
• Page Start: H1091
• Page End: H1098
• Publication Date: 2017-12-07
• Subjects: co-doping -- diamond-like carbon -- dopamine; Electrochemistry -- Periodicals; 541.3705
• DOI: 10.1149/2.1001714jes
• Languages: English
• ISSNs: 0013-4651

Abstract

Abstract : Niobium (Nb) and nitrogen (N) co-doped diamond-like carbon (DLC) film ((Nb:N)-DLC) was fabricated by reactive magnetron sputtering. Atomic force microscopy, Raman spectra and X-ray photoelectron spectroscopy were used to characterize the morphology, microstructure, and composition of the (Nb:N)-DLC film. The (Nb:N)-DLC film has typical DLC characteristics with enlarged and uniform specific surface area. Electrochemical tests show that the proposed co-doped DLC electrode not only presents fast apparent rate constant (1.92 × 10 −2 cm s −1 ), low charge transfer resistance (13.86 Ω cm 2 ), but also possesses excellent electrochemical reversibility and stability in K3 Fe(CN)6 electrolyte. Furthermore, the (Nb:N)-DLC electrode was applied to the determination of dopamine (DA) and an apparent current response to a low concentration of 0.5 μM was obtained by differential pulse voltammetry.