Arid
DOI10.1039/b714924g
Solid-phase synthesis of graphitic carbon nanostructures from iron and cobalt gluconates and their utilization as electrocalalyst supports
Sevilla, M.1; Martinez-de Lecea, C. Salinas2; Valdes-Solis, T.1; Morallon, E.3,4; Fuertes, A. B.1
通讯作者Fuertes, A. B.
来源期刊PHYSICAL CHEMISTRY CHEMICAL PHYSICS
ISSN1463-9076
EISSN1463-9084
出版年2008
卷号10期号:10页码:1433-1442
英文摘要

We present a novel and facile synthesis methodology for obtaining graphitic carbon structures from Fe(II) and Co(II) gluconates. The formation of graphitic carbon can be carried Out ill only one step by means of heat treatment of these organic salts at a temperature of 900 degrees C or 1000 degrees C under inert atmosphere. This process consists of the following steps: (a) pyrolysis of the organic gluconate and its transformation to amorphous carbon, (b) conversion of Fe2+ and Co2+ ions to Fe2O3 arid CoO and their subsequent reduction to metallic nanoparticles by the carbon and (c) conversion of a fraction of formed amorphous carbon to graphitic structures by Fe and Co nanoparticles that act as catalysts in the graphitization process. The removal of the amorphous carbon and metallic nanoparticles by means of oxidative treatment (KMnO4 in an acid solution) allows graphitic carbon nanostructures (GCNs) to be selectively recovered. The GCNs thus obtained (i.e. nanocapsules and nanopipes) have a high crystallinity as evidenced by TEM/SAED, XRD and Raman analysis. In addition, we used these GCNs as supports for platinum nanoparticles, which were well dispersed (mean Pt size similar to 2.5-3.2 nm). Most electrocatalysts prepared in this way have a high electrocatalytical surface area, up to 90 m(2) g(-1) Pt, and exhibit high catalytic activities toward methanol electrooxidation.


类型Article
语种英语
国家Spain
收录类别SCI-E
WOS记录号WOS:000254355500009
WOS关键词FUEL-CELL-ELECTRODES ; CATALYTIC GRAPHITIZATION ; PLATINUM NANOPARTICLES ; ELECTROCATALYTIC PROPERTIES ; ORGANOMETALLIC PRECURSORS ; HYDROGEN ADSORPTION ; METHANOL OXIDATION ; MESOPOROUS CARBONS ; PTRU NANOPARTICLES ; HIGH-PERFORMANCE
WOS类目Chemistry, Physical ; Physics, Atomic, Molecular & Chemical
WOS研究方向Chemistry ; Physics
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/158797
作者单位1.CSIC, Inst Nacl Carbon, E-33080 Oviedo, Spain;
2.Univ Alicante, Dept Quim Inorgan, E-03080 Alicante, Spain;
3.Univ Alicante, Dept Quim Fis, E-03080 Alicante, Spain;
4.Univ Alicante, Inst Univ Mat, E-03080 Alicante, Spain
推荐引用方式
GB/T 7714
Sevilla, M.,Martinez-de Lecea, C. Salinas,Valdes-Solis, T.,et al. Solid-phase synthesis of graphitic carbon nanostructures from iron and cobalt gluconates and their utilization as electrocalalyst supports[J],2008,10(10):1433-1442.
APA Sevilla, M.,Martinez-de Lecea, C. Salinas,Valdes-Solis, T.,Morallon, E.,&Fuertes, A. B..(2008).Solid-phase synthesis of graphitic carbon nanostructures from iron and cobalt gluconates and their utilization as electrocalalyst supports.PHYSICAL CHEMISTRY CHEMICAL PHYSICS,10(10),1433-1442.
MLA Sevilla, M.,et al."Solid-phase synthesis of graphitic carbon nanostructures from iron and cobalt gluconates and their utilization as electrocalalyst supports".PHYSICAL CHEMISTRY CHEMICAL PHYSICS 10.10(2008):1433-1442.
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