Carbon brushes nanotube

A mixture of boric acid (1 g) and urea (11.8 g) was taken in 40 ml distilled water and heated at 70 °C until the solution became viscous the a-CNTs were soaked in it for nearly 2 h. They were later separated physically and dried in air at 40 C overnight. The dried sample was thermally treated at 970 °C for 3 h for 40 nm nanotubes in a N2 atmosphere, and for 12 h in the case of the larger diameter (170 nm) nanotubes, and then cooled down to room temperature. The product was subsequently heated in an NHt atmosphere at 1050 °C in case of 170 nm nanotubes and 900 C in case of 40 nm nanotubes for three hours to give black-coloured boron-carbon-nitride nanotube brushes. The products were investigated by transmission electron microscopy and other physical techniques. 

Qin, S., et al., Polymer brushes on single-walled carbon nanotubes by atom transfer radical polymerization ofn-butyl methacrylate. Journal of the American Chemical Society, 2003. 126(1) p. 170-176. 

Irantzu, L., et ah, Carbon nanotube surface modification with polyelectrolyte brushes endowed with quantum dots and metal oxide nanoparticles through in situ synthesis. Nanotechnology, 2010. 21(5) p. 055605. 

Electronic motor brushes have been made from nanotube composites that are better lubricated, cooler running, stronger, less brittle, and more accurately moldable in comparison to the traditional carbon black brushes. 

Our metrology has also been applied to particularly challenging systems, such as layer-by-layer assemblies [75-77], polymer brushes [78], and even single carbon nanotubes [79], with remarkable results. 

Bando and co-workers271 have prepared BN nanolubes by the reaction of MgO, FeO and B in the presence of NH, at 1400 °C. Reaction of boric acid or B20, with N2 or NH, at high temperatures in the presence of carbon or catalytic metal particles has been employed in the preparation of BN nanotubes.2 2 Boron nitride nanotubes can be grown directly on substrates at 873 K by a plasma-enhanced laser-deposition technique.172 Recently, GaN nanotube brushes have been prepared using amorphous carbon nanotubes templates obtained using AAO membranes.274... 

Amorphous carbon nanotube (a-CNT) brushes were prepared by the following procedure.12 Polycarbonate membranes with a pore diameter of 220 nm were soaked in 22 mL of a 0.5 M aqueous solution of glucose in a 25 mL Teflon-lined autoclave. The same procedure was repeated with polycarbonate... 

Fig. 1(a) shows a FESEM image of the amorphous carbon nanotubes (a-CNTs) with a well-aligned brush-iike... 

Fig, 1 (a) SEM image of amorphous carbon nanotube brushes, (b) TEM image of individual amorphous carbon nanotubes. 

Liu, Q.A., Nayfeh, M.H.,Yau, S.T, 2010. Brushed-on flexible supercapacitor sheets using a nanocomposite of polyaniUne and carbon nanotubes. J. Power Sources 195,7480-7483. 

Figure 3.3 Digital images of the select nanobiocomposite films displaying disappearance of transparency of the developed hybrid films (a) 100/10/0 wt% collagen/guar gum (GG)/brush-type carbon nanotube (BCNT), (b) 100/10/0.25 wt% collagen/GG/BCN, and (c) 100/10/2 wt% collagen/GG/BCNT.

Figure 3.4 Room temperature electrical conductivity of collagen/guar gum/XCNT hybrid nanobiocomposite films as a function of XCNTs. BCNT, brush-like carbon nanombe FWCNT, few-waUed carbon nanotube XCNT.

Qin, S.H. Qin, D. Ford, W.T. Resasco, D.E. Herrera, J.E. (2004b). Polymer Brushes on Single-Walled Carbon Nanotubes by Atom Transfer Radical Polymerization of n-Butyl Methacrylate. Journal of the American Chemical Society, 126,170-176. 

Chakrabarti, S., Nagasaka, T., Yoshikawa, Y., et al. (2006) Growth of super long aligned brush-like carbon nanotubes. Japan. J. Appl. Phys. Part 2 Lett. Express Lett. 45(24-28), L720-L722... 

Pushparaj, V., et al. (2012). Deformaticn and Capillary Self-Repair of Carbon Nanotube Brushes. Carbon, 50(15), 5618-5620. 

Besides the typical syntheses of polymer brushes from flat, low-area substrates, STIMP can be conducted from cellulose membranes, carbon nanotubes, and silica or polymeric beads, which has allowed Sl-lMP to be used for synthesis of molecularly imprinted polymers (MIPs) from a variety of supports [76-80]. The use of SI-IMP to fabricate MIPs is particularly advantageous over more common fabrication of MIPs by surface-initiated polymerization from surface-bound conventional initiators because the dithiocarbamyl radicals generated from surface-bound iniferters do not cause polymerization in solution, resulting in improved separation capacity [76-80]. In this section a few examples of fabrication of MIPs synthesized by STIMP from a variety of supports for molecular recognition or separation applications are briefly summarized with a focus on particular advantages enabled by the STIMP method. 

---