Partially embedded highly dispersed Pt nanoparticles in mesoporous carbon with enhanced leaching stability

Scholz, Kerstin; Scholz, Jan; McQuillan, A. James; Wagner, G.; Klepel, Olaf

doi:10.1016/j.carbon.2010.01.021

Cited by 20 publications

(1 citation statement)

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“…As a result, the negative replica of the template is obtained. Templates commonly used are zeolites, silicas, porous glass, and porous concrete [ 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 ]. Among the discussed materials, porous concrete has been proven to be a most promising template.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Porous Carbon Monoliths Using Hard Templates

et al. 2016

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The preparation of porous carbon monoliths with a defined shape via template-assisted routes is reported. Monoliths made from porous concrete and zeolite were each used as the template. The porous concrete-derived carbon monoliths exhibited high gravimetric specific surface areas up to 2000 m2·g−1. The pore system comprised macro-, meso-, and micropores. These pores were hierarchically arranged. The pore system was created by the complex interplay of the actions of both the template and the activating agent as well. On the other hand, zeolite-made template shapes allowed for the preparation of microporous carbon monoliths with a high volumetric specific surface area. This feature could be beneficial if carbon monoliths must be integrated into technical systems under space-limited conditions.

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Section: Introductionmentioning

confidence: 99%

Synthesis of Porous Carbon Monoliths Using Hard Templates

et al. 2016

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Synthesis and Application of Metal Nanoparticle Catalysts in Ionic Liquid Media using Metal Carbonyl Complexes as Precursors

Esteban

Janiak

2016

Nanocatalysis in Ionic Liquids

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Continuous Flow Synthesis of Platinum Nanoparticles in Porous Carbon as Durable and Methanol‐Tolerant Electrocatalysts for the Oxygen Reduction Reaction

et al. 2017

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The development and commercialization of direct methanol fuel cells (DMFCs) as energy conversion devices remains a challenge despite their advantages in terms of energy density and energy-conversion efficiency. The bottleneck for the development of DMFCs is mainly caused by the sluggish kinetics of the oxygen reduction reaction (ORR) at the cathode of fuel cells, and the effect of the so-called methanol crossover in state-of-the-art Pt/C electrocatalysts. Herein, we report for the first time an easily scalable continuous flow method based on ultraspray pyrolysis (USP) for the preparation of Pt nanoparticles directly embedded on highly porous carbon spheres. A study on the effect that post-synthesis treatment procedures have on the level of graphitization and catalytic properties is described. Use of USP results in a substantial reduction of the final Pt content with respect to typical Pt/C electrocatalysts, while yielding also excellent durability and tolerance to methanol crossover under acidic conditions. These results demonstrate that the USP method reported herein is a good candidate for its use in the preparation of ORR catalysts in commercial applications.

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Partially embedded highly dispersed Pt nanoparticles in mesoporous carbon with enhanced leaching stability

Cited by 20 publications

References 50 publications

Synthesis of Porous Carbon Monoliths Using Hard Templates

Synthesis of Porous Carbon Monoliths Using Hard Templates

Synthesis and Application of Metal Nanoparticle Catalysts in Ionic Liquid Media using Metal Carbonyl Complexes as Precursors

Continuous Flow Synthesis of Platinum Nanoparticles in Porous Carbon as Durable and Methanol‐Tolerant Electrocatalysts for the Oxygen Reduction Reaction

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