Production of bamboo-type carbon nanotubes doped with nitrogen from polyamide pyrolysis gas
| Autor: | N. Arnáiz, Ignacio Martin-Gullon, Rafael Font, M. Francisca Gómez-Rico |
|---|---|
| Přispěvatelé: | Universidad de Alicante. Departamento de Ingeniería Química, Residuos, Energía, Medio Ambiente y Nanotecnología (REMAN) |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Hydrogen chemistry.chemical_element 02 engineering and technology Chemical vapor deposition Carbon nanotube 010402 general chemistry BCNTs 01 natural sciences Analytical Chemistry law.invention law 021001 nanoscience & nanotechnology Decomposition 0104 chemical sciences Polyamide 6.6 Ingeniería Química Fuel Technology chemistry Amorphous carbon Chemical engineering Polyamide 0210 nano-technology Carbon Pyrolysis |
| Zdroj: | RUA. Repositorio Institucional de la Universidad de Alicante Universidad de Alicante (UA) |
| Popis: | Bamboo-type carbon nanotubes (BCNTs) doped with nitrogen were produced by catalytic chemical vapor deposition from the effluent gases resulting from pyrolysis of polyamide 6.6. This polymer provides the carbon and nitrogen source and allows to obtain enough hydrogen during its decomposition for the carbon nanotubes (CNTs) production without prior catalyst reduction. The influence of pyrolysis and growth temperatures was studied in order to obtain the best quality CNTs. Transmission electron microscopy, X-ray diffraction, and Raman spectrometry showed that the best results were obtained at 900 °C pyrolysis temperature and 750 °C growth temperature, since the presence of amorphous carbon was negligible and the best crystalline degree was obtained. These BCNTs had from 5 to 20 layers and their arcs of bamboo-like compartments had from 3 to 15 layers. They had 20 nm in diameter and lengths typically on the order of micrometers. This work was supported by the Spanish Ministry of Science and Innovation [CTQ 2008-05520 project], the Spanish Ministry of Economy, Industry and Competitiveness [CTQ 2013-44213-R project] and the Valencian Community Government (Spain) [Prometeo/2009/043/FEDER and PrometeoII/2014/007 projects]. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|