Another type of nanotube, a how-to guide to making bamboo-structured carbon nanotubesNovember 26, 2007Synthesis of bamboo-structured carbon nanotubes on MgO supported bimetallic Cu-Mo catalysts Nanotechnology is area if science that has recently captured the attention of people all around the world. At the heart of the nanotechnology revolution are carbon nanotubes, amazing materials with astonishing properties. They have applications in most fields, with new possibilities emerging regularly. Carbon nanotubes are not as straightforward as many believe them to be. Of course there are the simple single walled carbon nanotubes and the more complex multi walled carbon nanotubes, but there are also carbon nanotubes in a number of other forms. By altering reaction conditions, carbon nanotubes also exist as carbon cages, carbon nanohorns and carbon nanotubes with a structure reminiscent of bamboo. Research work has just been released that provides a detailed analysis of the procedure for synthesising bamboo structured carbon nanotubes (BCNTs). The work by Zhonglai Li, Hongzhe Zhang, Joe Tobin, Michael A. Morris, Jieshan Qiu, Gary Attard and Justin D. Holmes from University College Cork, Dalian University of Technology and Cardiff University has been published in a special edition of the open access journal, AZoJono*. This special edition of AZoJono features a number of papers from DESYGN-IT, the project seeking to secure Europe as the international scientific leader in the design, synthesis, growth, characterisation and application of nanotubes, nanowires and nanotube arrays for industrial technology. The present work looked at bamboo-structured carbon nanotubes with a narrow diameter distribution synthesized on bimetallic copper-molybdenum catalysts. Findings included the catalytic nanoparticles playing a key role in the synthesis of the nanotubes as well as acting as nucleation seeds for growth. Raman and thermal gravimetric analysis results showed that the quality of the BCNTs was dependent on the amount of copper present in the catalyst. These results challenge accepted wisdom that significant yields of CNTs can only be formed from catalytic CVD routes if first row or mid-row transition elements are used as catalysts. The article is available to view in its entirety on AZoJono at http://www.azonano.com/Details.asp?ArticleID=2037 AZoNetwork |
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| Related Carbon Nanotubes Current Events and Carbon Nanotubes News Articles Caltech scientists develop DNA origami nanoscale breadboards for carbon nanotube circuits In work that someday may lead to the development of novel types of nanoscale electronic devices, an interdisciplinary team of researchers at the California Institute of Technology (Caltech) has combined DNA's talent for self-assembly with the remarkable electronic properties of carbon nanotubes, thereby suggesting a solution to the long-standing problem of organizing carbon nanotubes into nanoscale electronic circuits. Breakthrough in industrial-scale nanotube processing Rice University scientists today unveiled a method for the industrial-scale processing of pure carbon-nanotube fibers that could lead to revolutionary advances in materials science, power distribution and nanoelectronics. Next-generation microcapsules deliver 'chemicals on demand' Scientists in California are reporting development of a new generation of the microcapsules used in carbon-free copy paper, in which capsules burst and release ink with pressure from a pen. Study shows how carbon nanotubes can affect lining of the lungs Carbon nanotubes are being considered for use in everything from sports equipment to medical applications, but a great deal remains unknown about whether these materials cause respiratory or other health problems. Advance in 'nano-agriculture': Tiny stuff has huge effect on plant growth With potential adverse health and environmental effects often in the news about nanotechnology, scientists in Arkansas are reporting that carbon nanotubes (CNTs) could have beneficial effects in agriculture. A recipe for controlling carbon nanotubes Nanoscopic tubes made of a lattice of carbon just a single atom deep hold promise for delivering medicines directly to a tumor, sensors so keen they detect the arrival or departure of a single electron, a replacement for costly platinum in fuel cells or as energy‐saving transistors and wires. Friction force differences could offer a new means for sorting and assembling nanotubes Nanotubes and nanowires are promising building blocks for future integrated nanoelectronic and photonic circuits, nanosensors, interconnects and electro-mechanical nanodevices. But some fundamental issues remain to be resolved - among them, how to position and manipulate the tiny tubes. New biosensor can detect bacteria instantaneously A research group from the Rovira i Virgili University (URV) in Tarragona has developed a biosensor that can immediately detect very low levels of Salmonella typhi, the bacteria that causes typhoid fever. Researchers design new graphene-based, nano-material with magnetic properties An international team of researchers has designed a new graphite-based, magnetic nano-material that acts as a semiconductor and could help material scientists create the next generation of electronic devices like microchips. Researchers Pinpoint Neural Nanoblockers in Carbon Nanotubes A team of Brown University scientists has pinpointed why carbon nanotubes tend to block a critical signaling pathway in neurons. More Carbon Nanotubes Current Events and Carbon Nanotubes News Articles |
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