The deposition of ultrafine platinum particles on carbon black by surface ion exchange—increase in loading amount

Yasuda, Kazuaki; Nishimura, Yasuo

doi:10.1016/j.matchemphys.2003.08.020

Cited by 52 publications

(42 citation statements)

References 15 publications

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“…Pt/SWNTs catalysts were prepared by an ion-exchange method [16]. The detailed preparation process was described as follows: The oxidized carbon nanotubes were immersed in ultra pure water.…”

Section: Preparation Of Pt/swnts Catalystmentioning

confidence: 99%

High utilization platinum deposition on single-walled carbon nanotubes as catalysts for direct methanol fuel cell

Wang

Yin

Zhang

et al. 2007

Electrochimica Acta

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Section: Preparation Of Pt/swnts Catalystmentioning

confidence: 99%

High utilization platinum deposition on single-walled carbon nanotubes as catalysts for direct methanol fuel cell

Wang

Yin

Zhang

et al. 2007

Electrochimica Acta

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“…The carbon aerogel surface oxidation was necessary for the platinum insertion to occur when using the cationic platinum precursor Pt(NH 3 ) 4 (OH) 2 [15,16]. The oxidizing treatment was done as follows.…”

Section: Platinum Insertion Onto Oxidized Carbon Aerogelmentioning

confidence: 99%

Platinum supported on resorcinol–formaldehyde based carbon aerogels for PEMFC electrodes: Influence of the carbon support on electrocatalytic properties

et al. 2006

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Two carbon aerogels with different nanopore size distributions but both with high surface area, high nanoporous volume and low bulk density have been compared as platinum support. The influence of the nanostructure of the carbon aerogel on the platinum nanoparticle deposit was investigated. The platinum was deposited on the carbon by means of two different techniques, one employing an anionic platinum precursor, the other using a cationic one. The porosity of the carbon aerogels was characterized by combining N 2 -sorption and mercury porosimetry. The platinum deposit was characterized by transmission electron microscopy and rotating disk electrode experimentation to measure the platinum active surface area and its activity towards oxygen reduction reaction (ORR). The structural differences between the carbon aerogels did not yield any difference in platinum deposits in terms of Pt-surface area and ORR activity. Interestingly, the ORR mass activity of the high Pt-surface area samples, obtained by the cationic insertion technique, was several times lower than that of the samples obtained by the anionic technique. This observation was attributed to the particle size effect, detrimental in the case of platinum particle size around 1 nm.

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“…The growth time was 30 hours resulting in a yield of 29 gC/g catalyst. The prepared fibers were used as catalyst support without modification or after oxidization treatment at reflux conditions as stated in [11] with FB-HNO 3 as support.…”

Section: Methodsmentioning

confidence: 99%

On the preparation methods for carbon nanofiber-supported Pt catalysts

et al. 2007

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A study of the suitability of different methods for preparing highly loaded, well dispersed carbon nanofiber (CNF) supported Pt catalysts intended for application in fuel cells is reported. Preparation routes that are successfully applied on conventional carbon supports are hampered by the lower surface area and number of surface groups on CNFs. Ion exchange, homogeneous deposition precipitation and impregnation are all techniques that are limited to low metal loading on this CNF support. The most promising methods are the colloidal methods. By the modified polyol method, a Pt-content of 24 wt% with a particle size of 2-4 nm was achieved. CNFs could also be completely covered by 2-3 nm Pt oxide particles by using the metal-oxide colloid route, reaching a Pt-content of 17 wt%. The merits that make these methods more suitable than the other methods and the mechanism for deposition of Pt particles on CNFs are discussed.

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The deposition of ultrafine platinum particles on carbon black by surface ion exchange—increase in loading amount

Cited by 52 publications

References 15 publications

High utilization platinum deposition on single-walled carbon nanotubes as catalysts for direct methanol fuel cell

High utilization platinum deposition on single-walled carbon nanotubes as catalysts for direct methanol fuel cell

Platinum supported on resorcinol–formaldehyde based carbon aerogels for PEMFC electrodes: Influence of the carbon support on electrocatalytic properties

On the preparation methods for carbon nanofiber-supported Pt catalysts

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