Electrochemical properties of N-doped hydrogenated amorphous carbon films fabricated by plasma-enhanced chemical vapor deposition methods

Tanaka, Yuki; Furuta, M.; Kuriyama, Koichi; Kuwabara, Ryosuke; Katsuki, Yukiko; Kondo, Takeshi; Fujishima, Akira; Honda, Kensuke

doi:10.1016/j.electacta.2010.11.006

Cited by 71 publications

(59 citation statements)

References 38 publications

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“…25 Some groups have also reported electrochemical responses of nitrogen containing carbon film electrodes. [26][27][28][29][30] However, very few reports studied the relationship between carbon film structures, particularly about chemical bonds and electrocatalytic properties. 9,19 In this work, we studied N-UBM nanocarbon film electrodes with relatively low nitrogen concentration in terms of structural dependence of ORR.…”

Section: Electrocatalytic Reduction Of Oxygenmentioning

confidence: 99%

Structure and Electroanalytical Application of Nitrogen-doped Carbon Thin Film Electrode with Lower Nitrogen Concentration

et al. 2015

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We studied a nitrogen-doped nanocarbon film electrode with a nitrogen concentration of lower than 10.9 at% formed by the unbalanced magnetron (UBM) sputtering method. The sp 3 content in the nitrogen-doped UBM sputtering nanocarbon film (N-UBM film) slightly increases with increasing nitrogen concentration. The nitrogen-containing graphite-like bonding decreases and pyridine-like bonding increases with increasing nitrogen concentration. The N-UBM film has a very smooth surface with an average roughness of 0.1 to 0.3 nm, which is almost independent of nitrogen concentration. The N-UBM film electrode shows a wider potential window (4.1 V) than a pure-UBM film electrode (3.9 V) due to its slight increase in the sp 3 content. The electrocatalytic activity increased with increasing nitrogen concentration, suggesting that the electroactivity is maximum when the nitrogen concentration is around 10.9 at%, which is confirmed by the peak separation of Fe(CN)6 4-. The hydrogen peroxide (H2O2) reduction potentials at the N-UBM film electrode shifted about 0.1 V, and the peak current of H2O2 increased about 4 times.

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Section: Electrocatalytic Reduction Of Oxygenmentioning

confidence: 99%

Structure and Electroanalytical Application of Nitrogen-doped Carbon Thin Film Electrode with Lower Nitrogen Concentration

et al. 2015

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“…We have recently shown that DLC electrodes are exceptionally stable in phosphate buffered saline (PBS) solution, but can still be utilized to detect biomolecules by inducing local electrochemically active spots on the otherwise inert DLC electrode [4]. Furthermore, DLC in its many forms is an attractive electrode material because of its antifouling properties and general biocompatibility [5][6][7][8][9][10][11][12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

New electrochemically improved tetrahedral amorphous carbon films for biological applications

Laurila

Protopopova

Rhode

et al. 2014

Diamond and Related Materials

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Carbon based materials have been frequently used to detect different biomolecules. For example high sp 3 containing hydrogen free diamond-like carbon (DLC) possesses many properties that are beneficial for biosensor applications. Unfortunately, the sensitivities of the DLC electrodes are typically low. Here we demonstrate that by introducing topography on the DLC surface and by varying its layer thickness, it is possible to significantly increase the sensitivity of DLC thin film electrodes towards dopamine. The electrode structures are characterized in detail by atomic force microscopy (AFM) and conductive atomic force microscopy (C-AFM) as well as by transmission electron microscopy (TEM) combined with electron energy loss spectroscopy (EELS). With cyclic voltammetry (CV) measurements we demonstrate that the new improved DLC electrode has a very wide water window, but at the same time it also exhibits fast electron transfer rate at the electrode/solution interface. In addition, it is shown that the sensitivity towards dopamine is increased up to two orders of magnitude in comparison to the previously fabricated DLC films, which are used as benchmarks in this investigation. Finally, it is shown, based on the cyclic voltammetry measurements that dopamine exhibits highly complex behavior on top of these carbon electrodes.

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“…Since the electrical deposition coatings rarely involve unified thickness throughout the surface, typically a share of the surface with a key role in piece performance and servicing is defined as the effective surface and the minimum thickness (not the average one) is determined at this surface. Extensive electrodeposition is utilized for both obtaining the desired surface properties and further repair and adjustment of the size in pieces highly abraded during the service or those that are out of dimensional precisions (34)(35)(36)(37)(38)(39)(40)(41)(42)(43)(44)(45)(46).…”

Section: General Principlesmentioning

confidence: 99%

Fabrication and Properties of Micro- and Nanostructured Coatings Using Electrochemical Depositions

Aliofkhazraei

Ali

2014

Comprehensive Materials Processing

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Electrochemical properties of N-doped hydrogenated amorphous carbon films fabricated by plasma-enhanced chemical vapor deposition methods

Cited by 71 publications

References 38 publications

Structure and Electroanalytical Application of Nitrogen-doped Carbon Thin Film Electrode with Lower Nitrogen Concentration

Structure and Electroanalytical Application of Nitrogen-doped Carbon Thin Film Electrode with Lower Nitrogen Concentration

New electrochemically improved tetrahedral amorphous carbon films for biological applications

Fabrication and Properties of Micro- and Nanostructured Coatings Using Electrochemical Depositions

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