Metal-catalyst-free access to multiwalled carbon nanotubes/silica nanocomposites (MWCNT/SiO2) from a single-source precursor

2019 ◽  
Vol 48 (29) ◽  
pp. 11018-11033 ◽  
Author(s):  
Gabriela Mera ◽  
Peter Kroll ◽  
Ilia Ponomarev ◽  
Jiewei Chen ◽  
Koji Morita ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Silica Matrix ◽  
Metal Catalyst ◽  
Free Access ◽  
Single Source ◽  
Simple Metal ◽  
Multiwalled Carbon ◽  
Silica Nanocomposites ◽  
Catalyst Free ◽  
Single Source Precursor

Bamboo-like MWCNTs in a mesoporous silica matrix are synthesized by a simple metal-catalyst-free single-source precursor approach.

Use of High-Purity Metal-Catalyst-Free Multiwalled Carbon Nanotubes To Avoid Potential Experimental Misinterpretations

Langmuir ◽  
2007 ◽  
Vol 23 (18) ◽  
pp. 9501-9504 ◽  
Author(s):  
Craig P. Jones ◽  
Kerstin Jurkschat ◽  
Alison Crossley ◽  
Richard G. Compton ◽  
Bill Logan Riehl ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
High Purity ◽  
Metal Catalyst ◽  
Multiwalled Carbon ◽  
High Purity Metal ◽  
Catalyst Free

Simple Metal-catalyst-free Production of Carbon Nanostructures

2013 ◽  
Vol 66 (11) ◽  
pp. 1435 ◽  
Author(s):  
Thomas K. Ellis ◽  
Christian Paras ◽  
Matthew R. Hill ◽  
John A. Stride
Keyword(s):  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Carbon Nanostructures ◽  
Chemical Reduction ◽  
Ambient Pressure ◽  
Chemical Degradation ◽  
Metal Catalyst ◽  
Metallic Sodium ◽  
Multiwalled Carbon ◽  
Catalyst Free

We report the metal-catalyst-free production of multiwalled carbon nanotubes and nanobubbles, in a chemical reduction of hexachlorobenzene by metallic sodium, giving high yields (in excess of 80 %) and at temperatures as low as 190°C for multiwalled carbon nanotubes and 100°C for nanobubble formation. The carbon nanotube samples produced under solvothermal conditions were found to consist of large bundles of nanotubes (>50 µm) consistent with a facial growth from the surface of the molten metal. Meanwhile, the nanobubbles produced under ambient pressure were found to be small (≤1 µm), polydispersed (smallest ~50 nm), and the bulk to have a large microporous area. With the regulatory complexities and high environmental and economic costs of remediating waste containing highly hazardous halogenated aromatic chemicals, necessitating high-temperature incineration under strictly controlled conditions, this low-temperature, low-cost chemical degradation of hexachlorobenzene is of great potential as a scalable and workable remediation technology.

Metal-Catalyst-Free Growth of Carbon Nanotubes for CMOS Integration

2010 ◽  
Author(s):  
T. Uchino ◽  
G. N. Ayre ◽  
D. C. Smith ◽  
J. L. Hutchison ◽  
C. H. de Groot ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Metal Catalyst ◽  
Catalyst Free ◽  
Free Growth

Metal-Catalyst-Free Growth of Single-Walled Carbon Nanotubes on Substrates

2009 ◽  
Vol 131 (6) ◽  
pp. 2094-2095 ◽  
Author(s):  
Shaoming Huang ◽  
Qiran Cai ◽  
Jiangying Chen ◽  
Yong Qian ◽  
Lijie Zhang
Keyword(s):  
Carbon Nanotubes ◽  
Single Walled Carbon Nanotubes ◽  
Metal Catalyst ◽  
Single Walled Carbon ◽  
Catalyst Free ◽  
Free Growth ◽  
Walled Carbon Nanotubes

Metal-Catalyst-Free Growth of Single-Walled Carbon Nanotubes

2009 ◽  
Vol 131 (6) ◽  
pp. 2082-2083 ◽  
Author(s):  
Bilu Liu ◽  
Wencai Ren ◽  
Libo Gao ◽  
Shisheng Li ◽  
Songfeng Pei ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Single Walled Carbon Nanotubes ◽  
Metal Catalyst ◽  
Single Walled Carbon ◽  
Catalyst Free ◽  
Free Growth ◽  
Walled Carbon Nanotubes

scholarly journals Metal-Catalyst-Free Growth of Silica Nanowires and Carbon Nanotubes Using Ge Nanostructures

2011 ◽  
Vol 50 (4S) ◽  
pp. 04DN02
Author(s):  
Takashi Uchino ◽  
John L. Hutchison ◽  
Greg N. Ayre ◽  
David C. Smith ◽  
Kees de Groot ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Metal Catalyst ◽  
Catalyst Free ◽  
Silica Nanowires ◽  
Free Growth

Metal-catalyst-free Growth and Characterization of Nitrogen-doped Carbon Nanotubes

2011 ◽  
Vol 26 (8) ◽  
pp. 881-884 ◽  
Author(s):  
Can WANG ◽  
Liang ZHAN ◽  
Zhen-Hong HUANG ◽  
Wen-Ming QIAO ◽  
Xiao-Yi LIANG ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Metal Catalyst ◽  
Nitrogen Doped ◽  
Catalyst Free ◽  
Free Growth ◽  
Nitrogen Doped Carbon

Hybrid Multiwalled Carbon Nanotubes/Minerals as Potential Fillers for Polymer Composites

2012 ◽  
Vol 620 ◽  
pp. 236-240 ◽  
Author(s):  
Muhammad Helmi Abdul Kudus ◽  
Md Akil Hazizan ◽  
Siti Shuhadah M. Saleh
Keyword(s):  
Carbon Nanotubes ◽  
Polymer Composite ◽  
Chemical Vapor ◽  
Metal Catalyst ◽  
Nickel Salt ◽  
Multiwalled Carbon ◽  
Hybrid Compound ◽  
Compound A ◽  
Different Types ◽  
Mineral Fillers

Minerals are always used as filler material in polymer composite application purposely to reduce the price. In order to optimize the use of mineral fillers instead of price reduction, there were several approaches that have been done such as surface treatment, finding suitable coupling agent, and etc. The study on hybridization of minerals with carbon nanotubes (CNT) are rare to be found. CNT has received great attention from researchers due to their superior properties to be used in many applications. Hybridizing CNT with minerals proposes potential fillers for polymer composite. In this study, chemical vapor deposition (CVD) technique was used to synthesize the CNT-minerals hybrid compound. A mixture of CH4/N2was used as the carbon source and nickel as the metal catalyst for the growth of CNT hybrid compound. Three different types of minerals were used namely talc, muscovite and CaCO3are used to synthesize the MWCNT-talc, MWCNT-muscovite and MWCNT-CaCO3hybrid compound. In short, the process involved precipitation of mineral filler with nickel salt. The process was followed by calcinations and reduction of the catalyst, and methane decomposition. The produced hybrid compounds were then analyzed.

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