摘要
Willow or poplar catkins were carbonized to prepare carbon microtubes (CMTs) due to their natural micro-tubular structure. After carbonization at temperatures of 550-950 ° C, CMTs with outer and inner diameters of 4-8 and 3-7 lm were obtained. In addition to having a large and accessible inner tube, a small amount of nitrogen (∼ 1.8 at.%) and phosphorus (∼ 0.4 at.%) dopants cause CMTs prepared at 750 ° C to be a cheap metal-free catalyst with good catalytic activity in the oxygen reduction reaction.
源语言 | 英语 |
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页(从-至) | 5292-5297 |
页数 | 6 |
期刊 | Carbon |
卷 | 49 |
期 | 15 |
DOI | |
出版状态 | 已出版 - 12月 2011 |
已对外发布 | 是 |