Izvorni znanstveni članak
Synthesis of Nitrogen-Doped Carbon Nanocoils with Adjustable Morphology using Ni–Fe Layered Double Hydroxides as Catalyst Precursors
Tomohiro Iwasaki
; Department of Chemical Engineering, Osaka Prefecture University, Osaka, Japan
Masashi Tomisawa
; Department of Chemical Engineering, Osaka Prefecture University, Osaka, Japan
Takuma Yoshimura
; Department of Chemical Engineering, Osaka Prefecture University, Osaka, Japan
Hideya Nakamura
; Department of Chemical Engineering, Osaka Prefecture University, Osaka, Japan
Masao Ohyama
; Technology Research Institute of Osaka Prefecture, Osaka, Japan
Katsuya Asao
; Technology Research Institute of Osaka Prefecture, Osaka, Japan
Satoru Watano
; Department of Chemical Engineering, Osaka Prefecture University, Osaka, Japan
Sažetak
Nitrogen-doped carbon nanocoils (CNCs) with adjusted morphologies were synthesized in a one-step catalytic chemical vapour deposition (CVD) process using acetonitrile as the carbon and nitrogen source. The nickel iron oxide/nickel oxide nanocomposites, which were derived from nickel–iron layered double hydroxide (LDH) precursors, were employed as catalysts for the synthesis of CNCs. In this method, precursor-to-catalyst transformation, catalyst activation, formation of CNCs, and nitrogen doping were all performed in situ in a single process. The morphology (coil diameter, coil pitch, and fibre diameter) and nitrogen content of the synthesized CNCs was individually adjusted by modulation of the catalyst composition and CVD reaction temperature, respectively. The adjustable ranges of the coil diameter, coil pitch, fibre diameter, and nitrogen content were confirmed to be approximately 500±100 nm, 600±100 nm, 100±20 nm, and 1.1±0.3 atom%, respectively.
Ključne riječi
carbon nanocoil; helical carbon nanotube; coiled carbon nanofibre; catalytic chemical vapour deposition; layered double hydroxide
Hrčak ID:
142410
URI
Datum izdavanja:
1.1.2015.
Posjeta: 855 *