Fluorination of CNx Nanotubes
نویسندگان
چکیده
Multiwall CNx nanotubes have been prepared by thermal decomposition of acetonitrile over Co/Ni catalytic particles. The fluorination of nanotubes was performed at roomtemperature by using a gaseous mixture of BrF3 and Br2. Transmission electron microscopy (TEM) and x-ray diffraction (XRD) indicated that only the outer shells of CNx nanotubes were fluorinated, whereas the inner shells remained intact. Xray photoelectron spectroscopy (XPS) showed an oxidation of pyridinic-type nitrogenwith tube fluorination.
منابع مشابه
Nanotube brushes: polystyrene grafted covalently on CNx nanotubes by nitroxide-mediated radical polymerization.
Polymer brushes consisting of polystyrene (PS) chains bonded covalently to N-doped multiwalled carbon nanotubes (CNx) were synthesized by a "grafting from" route using nitroxide mediated radical polymerization (NMRP).
متن کاملStructural and morphological control of aligned nitrogen-doped carbon nanotubes
Nitrogen-doped carbon nanotubes (CNx–NTs) were prepared using a floating catalyst chemical vapor deposition method. Melamine precursor was employed to effectively control nitrogen content within the CNx–NTs and modulate their structure. X-ray photoelectron spectroscopy (XPS) analysis of the nitrogen bonding demonstrates the nitrogen-incorporation profile according to the precursor amount, which...
متن کاملPreparation of CNx/Carbon Nanotube Intramolecular Junctions by Switching Gas Sources in Continuous Chemical Vapour Deposition
Nitrogen-doped carbon nanotubes (CNx)/carbon nanotube intramolecular junctions were prepared by a simple continuous chemical vapour deposition (CVD) method at 650 °C. The catalyst was obtained by calcination of a layered double hydroxide precursor containing Fe and Mg. By switching between hexane and ethylenediamine repeatedly in the CVD process, multiple intramolecular junctions composed of CN...
متن کاملA glucose biosensor based on direct electrochemistry of glucose oxidase immobilized on nitrogen-doped carbon nanotubes.
A novel biosensor for glucose was prepared by immobilizing glucose oxidase (GOx) on nitrogen-doped carbon nanotubes (CNx-MWNTs) modified electrode. The CNx-MWNTs membrane showed an excellent electrocatalytic activity toward the reduction of O(2) due to its diatomic side-on adsorption on CNx-MWNTs. The nitrogen doping accelerated the electron transfer from electrode surface to the immobilized GO...
متن کاملFluorination-induced magnetism in boron nitride nanotubes from ab initio calculations
Citation: Li, Feng, Zhu, Zhonghua, Yao, Xiangdong, Lu, Gaoqing, Zhao, Mingwen, Xia, Yueyuan and Chen, Ying 2008-03-14, Fluorination-induced magnetism in boron nitride nanotubes from ab initio calculations, Applied physics letters, vol. 92, no. 10, pp. 102515. The following article appeared in Applied physics letters, vol. 92, no. 10, pp. 102515. and may be found at http://dx.doi.org/10.1063/1.2...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2006