Effect of oxygen adsorption on the electrochemical oxidative corrosion of single-walled carbon nanotubes

Tominaga, Masato; Yatsugi, Yuto; Togami, Makoto

doi:10.1039/c4ra10521d

Cited by 7 publications

(5 citation statements)

References 41 publications

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“…However, the lack of sp 3 -carbons in CNTs makes homogeneous Pt deposition onto CNTs rather difficult since the sp 3 -carbons act as anchoring sites for Pt 21,22 . To introduce the anchoring sites, chemical oxidation of CNTs have been applied [22][23][24][25][26][27][28][29] , but doing so reduces the durability of the CNTs in return due to the increase of sp 3 -carbons 29,30 .…”

Section: Introductionmentioning

confidence: 99%

Effect of Surface Roughness of Carbon Nanotube-based Catalyst Layer for Polymer Electrolyte Membrane Fuel Cell Performance

Fujigaya

Phua

Weerathunga

et al. 2022

Preprint

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The effect of surface roughness of the catalyst layer (CL) based on carbon-nanotube (CNTs) in contact with polymer electrolyte membrane (PEM) in polymer electrolyte membrane fuel cell (PEMFC) was studied. The surface roughness of vacuum-filtrated CL sheets were evaluated using laser microscope and the surface of CL sheet contacting the filter membrane was found to be smoother compared to the surface exposed to the air. When a smoother surface of the CL sheet was laminated with PEM to fabricate membrane-electrode-assembly (MEA), power density of the single cell was 604.6 mW cm-2 at 80 °C under 100%R.H., which was greater than the MEA having a rougher CL surface (542.4 mW cm-2).

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Section: Introductionmentioning

confidence: 99%

Effect of Surface Roughness of Carbon Nanotube-based Catalyst Layer for Polymer Electrolyte Membrane Fuel Cell Performance

Fujigaya

Phua

Weerathunga

et al. 2022

Preprint

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“…This condition causes the low selectivity of the electrode to dopamine. Some researchers have already used carbon-based and precious metal nanomaterials to increase the performance of glassy carbon electrodes as a dopamine sensor [7]. Types of carbon materials that can be used for modification of electrode are Single Wall Carbon Nanotubes (SWCNTs) [4] and Ketjen Black [4].…”

Section: Introductionmentioning

confidence: 99%

“…The advantages of SWCNTs as a material for electrode modification are good thermal conductivity, high surface area, and good electronic properties [7]. Ketjen Black is a type of carbon material that has the benefit of having high conductivity, a specific surface area and has a very porous structure that makes the surface area of ketjen black become very large and can absorb more analytes when used as a material for modification of electrochemical sensors [5].…”

Section: Introductionmentioning

confidence: 99%

Single-Walled Carbon Nanotubes (SWCNTs), Ketjen Black (KB), and Gold Nanoparticles (AuNPs) Modified Glassy Carbon Electrode for Highly Selective Dopamine Sensing

Ardyansyah¹,

Tominaga²,

Kurniawan³

2022

J. Nano- Electron. Phys.

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Modification of glassy carbon electrode (GCE) with single-walled carbon nanotubes (SWCNTs), Ketjen Black (KB), and gold nanoparticles (AuNPs) has been done. The modification was performed using drop coating method. Comparison performance between unmodified and modified GCE for detecting dopamine was carried out using cyclic voltammetry in 0.10 M acetate buffer solution (pH 4). It was performed in the potential range from -0.80 V to 0.80 V with a scan rate of 100 mV/s at room temperature. The results showed that modified GCE could produce higher anodic peak currents than unmodified GCE. This indicates that the synergistic effect between SWCNTs, KB, and AuNPs has succeeded to improve the performance of GCE. The limit of detection (LOD) of modified GCE for dopamine solution was determined using a calibration curve which plots the concentration variation to the anodic peak current. The calculation of LOD was found to be 0.49 M. Modified GCE showed good selectivity in dopamine without any interference signal from a solution of uric acid (UA), ascorbic acid (AA), glucose (Glu), and urea (U) in 0.10 M acetate buffer solution with pH 4. In this condition, only dopamine increases oxidation and reduction currents. The results indicated that modified GCE using SWCNTs, KB, and AuNPs can be used for highly selective dopamine sensing.

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“…18–20 However, the lack of sp 3 carbons in CNTs makes homogeneous Pt deposition onto CNTs rather difficult, because sp 3 carbons act as anchoring sites for Pt. 21,22 The chemical oxidation of CNTs has been applied to introduce anchoring sites and increase the number of sp 3 carbons, 22–29 but doing so reduces the durability. 29,30…”

Section: Introductionmentioning

confidence: 99%

“…[18][19][20] However, the lack of sp 3 carbons in CNTs makes homogeneous Pt deposition onto CNTs rather difficult, because sp 3 carbons act as anchoring sites for Pt. 21,22 The chemical oxidation of CNTs has been applied to introduce anchoring sites and increase the number of sp 3 carbons, [22][23][24][25][26][27][28][29] but doing so reduces the durability. 29,30 Previously, we demonstrated that the polymer coating of CNTs circumvents the need to introduce sp 3 carbons into the CNTs, while simultaneously providing anchoring sites for Pt.…”

Section: Introductionmentioning

confidence: 99%

Effect of carbon nanotube-based catalyst layer surface roughness on polymer electrolyte membrane fuel cell performance

Phua

Weerathunga

et al. 2022

Sustainable Energy Fuels

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Effect of oxygen adsorption on the electrochemical oxidative corrosion of single-walled carbon nanotubes

Cited by 7 publications

References 41 publications

Effect of Surface Roughness of Carbon Nanotube-based Catalyst Layer for Polymer Electrolyte Membrane Fuel Cell Performance

Effect of Surface Roughness of Carbon Nanotube-based Catalyst Layer for Polymer Electrolyte Membrane Fuel Cell Performance

Single-Walled Carbon Nanotubes (SWCNTs), Ketjen Black (KB), and Gold Nanoparticles (AuNPs) Modified Glassy Carbon Electrode for Highly Selective Dopamine Sensing

Effect of carbon nanotube-based catalyst layer surface roughness on polymer electrolyte membrane fuel cell performance

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