Effective preparation of carbon nanotube-supported Pt–Ru electrocatalysts

Chien, Chun‐Ching; Jeng, King-Tsai

doi:10.1016/j.matchemphys.2005.09.080

Cited by 106 publications

(42 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For the direct alcohol fuel cells (DAFCs), the use of 1D-CNMs as the catalyst support was reported to greatly enhance the electro-catalytic activity for the alcohol oxidation [8,9]. The main cause for the enhanced catalytic activity by the support seemed to be associated with not only its noble hosting geometry for the metal catalyst particles but its protection ability from the degradation by the carbon monoxide poisoning [8][9][10][11][12][13]. Anyway, it is obvious that the geometrical nanostructures of the 1D-CNMs as the catalyst support would strongly influence on the catalytic capability.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of the Carbon Nano/micro Coils Applicable to the Catalyst Support to Hold the Tiny Catalyst Grain

Park¹,

Kim

2013

Journal of the Korean Vacuum Society

View full text Add to dashboard Cite

Carbon coils could be synthesized using C 2 H 2 /H 2 as source gases and SF 6 as an incorporated additive gas under thermal chemical vapor deposition system. The Ni layer on the SiO 2 substrate was used as a catalyst for the formation of the carbon coils. The characteristics (formation densities, morphologies, and geometries) of the as-grown carbon coils on the substrate with or without the H 2 plasma pretreatment process were investigated. By the relatively short time (1 minute) H 2 plasma pretreatment on the Ni catalyst layered-substrate prior to the carbon coils synthesis reaction, the dominant formation of the carbon microcoils on the substrate could be achieved. After the relatively long time (30 minutes) H 2 plasma pretreatment process, on the other hand, we could obtain the noble-shaped geometrical nanostructures, namely the formation of the numerous carbon nanocoils along the growth of the carbon microcoils. This noble-shaped geometrical nanostructure seemed to play a promising role as the good catalyst support for holding the very tiny Ni catalyst grains.

show abstract

Section: Introductionmentioning

confidence: 99%

Synthesis of the Carbon Nano/micro Coils Applicable to the Catalyst Support to Hold the Tiny Catalyst Grain

Park¹,

Kim

2013

Journal of the Korean Vacuum Society

View full text Add to dashboard Cite

show abstract

“…Graphite oxide (GO) is prepared from graphite by chemical oxidation, and then converted into a graphene nanosheets in bulk quantity by chemical and thermal reduction in solution to produce graphene [1][2][3][4]. Since abundant oxygen functional groups on the both basal plane and edge of GO can be used as anchoring sites for metal nanoparticles, it is possible to use them as a support to produce graphene-nanoparticle hybrids [5]. Furthermore, the covalently attaching oxygen groups, including hydroxyl, epoxy groups on the basal plane and carboxylic groups at the edge of GO surface is also versatile and effective method to prepare graphene-based hybrid materials by the chemical modification of graphene [6].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Surface Functionalization on the Immobilization of Gold Nanoparticles on Graphene Sheets

Song

2012

Journal of Nanotechnology

View full text Add to dashboard Cite

In our study, graphene oxide is synthesized by Hummers method. And then, carboxylic acid functionalized graphene (graphene-COOH), thiol-functionalized graphene (graphene-SH), and highly dispersive graphene are prepared by chemical modification of respective groups on the graphene surface. Furthermore, we explore a solution-based approach to prepare three differently functionalized graphene-gold composites by one-step chemical reduction of AuCl 4 − ions in respective functionalized graphene suspensions, where the gold nanoparticles are deposited on the functionalized graphene surface during their synthesis process. In addition, we compare the influence of surface functionalization on the growth of gold nanoparticles on graphene surface. Transmission electron morphology (TEM) and ultraviolet-visible (UV-Vis) spectroscopy are employed to study the effect of surface functionalities on AuNPs distribution onto the graphene surface and demonstrate the successful immobilization of AuNPs on graphene surface.

show abstract

“…[4][5][6][7][8][9] It was also suggested that the conducting polymer enhances the charge transfer rate at the electrode and electrolyte interface. …”

Section: Introductionmentioning

confidence: 99%

Comparison of Catalytic Activity for Methanol Electrooxidation Between Pt/PPy/CNT and Pt/C

Lee¹,

Baek²,

Seo³

et al. 2010

Journal of the Korean Electrochemical Society

View full text Add to dashboard Cite

: This work explored the catalytic effect of Pt in multi-wall carbon nanotube and poly-pyrrole conductive polymer electrocatalysts (Pt/PPy/MWCNT). A home-made Pt/PPy/MWCNT catalyst was first evaluated by comparing its electrochemical active surface area (ESA) with E-Tek commercial catalysts by cyclic voltammetry in H 2 SO 4 solution. Then, the methanol oxidation currents of Pt/PPy/MWCNT and the hydrogen peaks in H 2 SO 4 solution were serially measured with microporous electrode. This provided the current density of methanol oxidation based on the ESA, allowing a quantitative comparison of catalytic activity. The current densities were also measured for Pt/C catalysts of E-Tek and Tanaka Precious Metal Co. The current densities for the different catalysts were similar, implying that catalytic activity depended directly on the ESA rather than charge transfer or electronic conductivity.

show abstract

Effective preparation of carbon nanotube-supported Pt–Ru electrocatalysts

Cited by 106 publications

References 24 publications

Synthesis of the Carbon Nano/micro Coils Applicable to the Catalyst Support to Hold the Tiny Catalyst Grain

Synthesis of the Carbon Nano/micro Coils Applicable to the Catalyst Support to Hold the Tiny Catalyst Grain

The Effect of Surface Functionalization on the Immobilization of Gold Nanoparticles on Graphene Sheets

Comparison of Catalytic Activity for Methanol Electrooxidation Between Pt/PPy/CNT and Pt/C

Contact Info

Product

Resources

About