X射线光电子能谱
白磷
化学
拉曼光谱
磷
碳纳米管
热重分析
兴奋剂
结晶
无机化学
化学工程
纳米技术
材料科学
有机化学
物理
光电子学
光学
工程类
作者
Anna A. Vorfolomeeva,Nikolay A. Pushkarevsky,Victor O. Koroteev,N. V. Surovtsev,Andrey Chuvilin,Elena V. Shlyakhova,Pavel E. Plyusnin,Anna A. Makarova,A. V. Okotrub,Lyubov G. Bulusheva
出处
期刊:Inorganic Chemistry
[American Chemical Society]
日期:2022-06-13
卷期号:61 (25): 9605-9614
被引量:8
标识
DOI:10.1021/acs.inorgchem.2c00979
摘要
Single-walled carbon nanotubes (SWCNTs) are a perfect host for the formation of one-dimensional phosphorus structures and to obtain hybrid materials with a large P-C ratio. This work presents a procedure for high-yield phosphorus filling of commercial Tuball SWCNTs and efficient removal of phosphorus deposits from the external nanotube surface. We probed white and red phosphorus as precursors, varied the synthesis temperature and the ampoule shape, and tested three solvents for sample purification. High-resolution transmission electron microscopy and Raman spectroscopy indicated crystallization of interior phosphorus in a form resembling fibrous red phosphorus. An aqueous sodium hydroxide solution allowed removing the majority of external phosphorus particles. Thermogravimetric analysis of the product determined ∼23 wt % (∼10 atom %) of phosphorus, and the X-ray photoelectron spectroscopy (XPS) data showed that ca. 80% of it is in the form of elemental phosphorus. Externally purified SWCNTs filled with phosphorus were used to study the interaction between the components. Raman spectroscopy and core-level XPS revealed p-type SWCNT doping. Valence-band XPS data and density functional theory calculations confirmed the transfer of the SWCNT electron density to the encapsulated phosphorus.
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