Thermal decomposition of surfactant coatings on Co and Ni nanocrystals
Thermal decomposition of surfactant coatings on Co and Ni nanocrystals
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钴和镍纳米晶上表面活性剂涂层的热分解
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
C. Murray
中科院分区：
文献类型：
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作者：
V. Pérez;O. M. Castellini;J. Crain;M. Eriksson;A. Kirakosian;J.;J. McChesney;F. Himpsel;C. T. Black;C. Murray
油酸表面活性剂保护Co和Ni纳米晶体的热分解的途径是通过用X射线吸收光谱探测相关的分子轨道来确定的。先前在热重测量中观察到的两个步骤被鉴定为整个分子在10200 °C下的热脱附和在10400 °C下的脱氢，这留下了下面具有烷烃片段的石墨表面。
The pathway for thermal decomposition of an oleic acid surfactant protecting Co and Ni nanocrystals is identified by probing the relevant molecular orbitals with x-ray absorption spectroscopy. The two steps observed previously in thermogravimetric measurements are identified with thermal desorption of entire molecules at ≈200 °C and dehydrogenation at ≈400 °C, which leaves a graphitic surface with alkane fragments underneath.