期刊
CARBON
卷 48, 期 3, 页码 696-705出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2009.10.014
关键词
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资金
- Spanish Ministry of Education and Science [NAN2004-09312-C03-03, CTQ2006/11322]
- Ministry of Science and Education of Spain
Lignin fibers with and without platinum were synthesized in a single step by electrospinning of lignin/ethanol/platinum acetyl acetonate and lignin/ethanol solutions, respectively. The fibers obtained were stabilized in air at low temperature to avoid fiber fusion during the subsequent carbonization process. The effect of the carbonization temperature (600-1000 degrees C) on surface chemistry, morphology, textural properties, and oxidation resistance of the final carbon fibers was studied. The carbonization process decreased the oxygen content of the fibers, increasing the carbon and surface platinum proportion and producing a well developed microporous structure. Carbon fibers with and without platinum with apparent surface areas of 1178 and 1195 m(2)/g, respectively, and micropore volumes of around 0.52 cm(3)/g were obtained. The diameter of the carbon fibers obtained is in the range of 400 nm to 1 mu m. Carbon fibers with surface platinum of 0.6% in weight were obtained. The carbon fibers with and without platinum showed high oxidation resistance despite their highly developed porous structure. (C) 2009 Elsevier Ltd. All rights reserved.
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