Paper Title:
Effect of Ammonia Etching on Catalyst Nanoparticles Formation for Growth of Aligned Carbon Nanotubes
  Abstract

The effect of ammonia etching (AE) pretreatment on the formation of catalyst nanoparticles from homogeneous Ni films deposited by sputtering coater for carbon nanotubes (CNTs) growth is investigated systematically. It is shown that the size and distribution of the nanoparticles depend mainly on the AE pretreatment temperature and time. It is observed that Ni catalyst film is agglomerated by AE pretreatment, resulting in the formation of Ni nanoparticles. We have found a critical temperature and time for AE pretreatment processes to obtain catalyst nanoparticles with the appropriate size and high density. The densely aligned CNTs were successfully grown at 800-850 °C on such nanoparticles by thermal Chemical vapor deposition (CVD).

  Info
Periodical
Advanced Materials Research (Volumes 160-162)
Edited by
Guojun Zhang and Jessica Xu
Pages
407-411
DOI
10.4028/www.scientific.net/AMR.160-162.407
Citation
G. Li, "Effect of Ammonia Etching on Catalyst Nanoparticles Formation for Growth of Aligned Carbon Nanotubes", Advanced Materials Research, Vols. 160-162, pp. 407-411, 2011
Online since
November 2010
Authors
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Hyoung Bong Bae, Jung Ho Ryu, Bok Soo Byun, Seong Ho Choi, Sang Ho Kim, Chul Gyun Hwang
Abstract:Pt-Ru@CP-MWNT catalysts were prepared by radiolytic deposition of Pt-Ru nanoparticles on conduction polymer (CP) coated multi walled carbon...
1478
Authors: V.L. Gayou, B. Salazar Hernández, R. Delgado Macuil, G. Zavala, P. Santiago, A.I. Oliva
Abstract:Zinc sulfide (ZnS), a representative of wide band gap semiconductor nanocrystals, has an excitonic Bohr radius (aBZnS ) of 2.5 nm. It makes...
125
Authors: Ke Jie Zhang, Hong Yan Zhou, Xiao Heng Liu
Abstract:An interesting sputtering phenomenon was shown when ZnS nanomaterial was irradiated by high-energy beams in a transmission electron...
272
Authors: Jun Tang, Huan Fei Wen, Peng Lan Chai, Jun Liu, Yun Bo Shi, Chen Yang Xue
Abstract:In this work, an interesting phenomenon demonstrating the similarities between the results from both Surface Enhanced Raman Spectroscopy...
33