scholarly journals Microwave-polyol Process for Functionalizing Carbon Nanotubes with SnO2and CeO2Coating

2006 ◽  
Vol 35 (1) ◽  
pp. 96-97 ◽  
Author(s):  
Jingyi Bai ◽  
Zhude Xu ◽  
Yifan Zheng
Keyword(s):  
Carbon Nanotubes ◽  
Polyol Process

Sonication assisted deposition of Cu2O nanoparticles on multiwall carbon nanotubes with polyol process

Carbon ◽  
2005 ◽  
Vol 43 (3) ◽  
pp. 670-673 ◽  
Author(s):  
Ying Yu ◽  
Li-Li Ma ◽  
Wen-Ya Huang ◽  
Fei-Peng Du ◽  
Jimmy C. Yu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Multiwall Carbon Nanotubes ◽  
Polyol Process ◽  
Cu2o Nanoparticles ◽  
Multiwall Carbon

Low-Temperature Selective Catalytic Reduction of NO with NH3 Over Mn-Fe Mixed Metal Oxides on the Nitric Vapor Functionalized Carbon Nanotubes Prepared by a Polyol Process

NANO ◽  
2017 ◽  
Vol 12 (04) ◽  
pp. 1750048
Author(s):  
Xin Lv ◽  
Liheng Zhang ◽  
Sheng Zhan ◽  
Zhen Li ◽  
Yi Zeng
Keyword(s):  
Carbon Nanotubes ◽  
Low Temperature ◽  
Metal Oxides ◽  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Polyol Process ◽  
Mixed Metal Oxides ◽  
Functionalized Carbon Nanotubes ◽  
X Ray ◽  
Scr Of No

Highly dispersed Mn-Fe mixed metal oxides were supported on the nitric vapor functionalized carbon nanotubes (CNTs) by the polyol process for the low-temperature selective catalytic reduction (SCR) of NO with NH3. X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), H2 temperature-programmed reduction (H2-TPR) and Fourier transform infrared (FT-IR) spectroscopy have been used to elucidate the structure and surface properties of the obtained catalysts. It was found that the Mn-Fe/VF-CNTs catalysts synthesized by the polyol process exhibited higher activity and more extensive operating-temperature window, compared to the catalysts prepared by the impregnation method. On the basis of the catalyst characterization, the better dispersion of metal oxides on the CNTs surface, the more chemisorbed oxygen species, the higher Mn[Formula: see text]/Mn and O[Formula: see text]/O[Formula: see text]O[Formula: see text] ratios played key roles in the excellent catalytic performance of the catalyst in the low-temperature SCR of NO to N2 with NH3.

Structural phenomena in the growth of carbon nanotubes

1993 ◽  
Vol 51 ◽  
pp. 750-751
Author(s):  
Jun Jiao
Keyword(s):  
Carbon Nanotubes ◽  
Growth Mechanism ◽  
Carbonaceous Material ◽  
Cluster Growth ◽  
Structural Elements ◽  
Rich Variety ◽  
Different Shapes ◽  
Point To Point

HREM studies of the carbonaceous material deposited on the cathode of a Huffman-Krätschmer arc reactor have shown a rich variety of multiple-walled nano-clusters of different shapes and forms. The preparation of the samples, as well as the variety of cluster shapes, including triangular, rhombohedral and pentagonal projections, are described elsewhere.The close registry imposed on the nanotubes, focuses attention on the cluster growth mechanism. The strict parallelism in the graphitic separation of the tube walls is maintained through changes of form and size, often leading to 180° turns, and accommodating neighboring clusters and defects. Iijima et. al. have proposed a growth scheme in terms of pentagonal and heptagonal defects and their combinations in a hexagonal graphitic matrix, the first bending the surface inward, and the second outward. We report here HREM observations that support Iijima’s suggestions, and add some new features that refine the interpretation of the growth mechanism. The structural elements of our observations are briefly summarized in the following four micrographs, taken in a Hitachi H-8100 TEM operating at an accelerating voltage of 200 kV and with a point-to-point resolution of 0.20 nm.

Carbon nanotubes: Hot display

2009 ◽  
Vol 1 (1) ◽  
pp. 9-9
Keyword(s):  
Carbon Nanotubes

Carbon nanotubes: Twist 'n' roll

Nature China ◽  
2007 ◽  
Author(s):  
Rachel Pei Chin Won
Keyword(s):  
Carbon Nanotubes
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