Press Release on Carbon Nanotubes Research: August-2018

For The First Time, Carbon Nanotube Transistors Have Outperformed Silicon

For the primary time, scientists have designed a semiconductor device out of carbon nanotubes that may run virtually double as quick as its Si counterparts.

This is huge, as a result of for many years, scientists are attempting to work out a way to build succeeding generation of computers exploitation nanotube parts, as a result of their distinctive properties might kind the premise of quicker devices that consume manner less power.

“Making nanotube transistors that are higher than Si transistors may be a huge milestone,” same one in every of the team, Michael Arnold, from the University of Wisconsin-Madison. “This action has been a dream of engineering for the last twenty years.” [1]

Covalent Functionalization of Single-Walled Carbon Nanotubes Through the Fluorination Stage for Integration into an Epoxy Composite

The higher limit of the modulus has been calculable for a polymer-carbon nanotube–epoxy matrix nanocomposite. This limit will be achieved if the nanotubes square measure integrated into the matrix, i.e., they kind endless reinforcing network within the matrix, and if the nanotubes square measure single-walled or double-walled carbon nanotubes. A way for fullerene|nanotube|fullerene} functionalization via fluorination and gas substitution and a way for calculative the degree of nanotube functionalization supported reaction yield measurements square measure projected. For gas substitution by epoxy-Diane organic compound and diaminodiphenylmethane, the degree of functionalization is С–(FG)x, x ~ 0.011–0.013 and the FG-molecular fragment containing the epoxy (amino) group corresponding to functionalization of ~5% of the surface С atoms of nanotubes. [2]

Metal-Free Catalytic Wet Oxidation: From Powder to Structured Catalyst Using N-Doped Carbon Nanotubes

This work shows a promising N-doped carbon catalyst for the chemical reaction of ethanedioic acid by chemical process wet chemical reaction, that is in a position to vie with the normal metallic element and metal compound catalysts employed in the method. when preliminary studies conducted in batch mode, the chemical process performance of the metal-free carbon nanotubes, each in powder type and supported on a microstructure carrier (a mineral monolith), was evaluated below continuous operative conditions. [3]

Nanocrystalline Calcium Carbonate Hydroxyapatites Containing Multiwall Carbon Nanotubes: Synthesis and Physicochemical Characterization

Nanocomposites (NCs) supported effervescent Ca hydroxyapatite (CHA) (bioapatite, Associate in Nursing analogue of the inorganic element of class bone tissue), carbonate mineral (Ca10(PO4)6CO3, CA), and multiwall carbon nanotubes (CNTs) square measure ready within the system CaCl2–(NH4)2HPO4–NH4HCO3–NH3–CNT–H2O (25°C) by coprecipitation of Ca and phosphorus salts with CNTs from binary compound solutions. The chemical science properties of nanocomposites square measure studied as hooked into their formation conditions and composition victimization the solubility (residual concentrations) methodology and hydrogen ion concentration measurements. The composition, crystal structure, morphology, chemical analysis and thermal characteristics of the synthesized CHA/CNT and CA/CNT NCs square measure determined victimization analysis, X-ray powder optical phenomenon, thermal analysis, and IR qualitative analysis. [4]

CORROSION PROTECTION OF STEEL WITH CARBON NANOTUBES INTO EPOXY PAINT COATING

A new epoxy paint material comprising the multiwall carbon nanotubes was developed for effective corrosion protection of steels in the neutral salt medium. The increasing of the corrosion protection properties of the coating with carbon nanotubes (CNT) as compared to the undoped material was established. [5]

Reference

[1] For The First Time, Carbon Nanotube Transistors Have Outperformed Silicon

BEC CREW, 5 SEP 2016 (web link)

[2] Covalent Functionalization of Single-Walled Carbon Nanotubes Through the Fluorination Stage for Integration into an Epoxy Composite

Krestinin AV, Kharitonov AP. Covalent Functionalization of Single-Walled Carbon Nanotubes Through the Fluorination Stage for Integration into an Epoxy Composite. Polymer Science, Series B. 2018 Jul 1;60(4):516-29.  (web link)

[3] Metal-Free Catalytic Wet Oxidation: From Powder to Structured Catalyst Using N-Doped Carbon Nanotubes

Rocha RP, Santos DF, Soares OS, Silva AM, Pereira MF, Figueiredo JL. Metal-Free Catalytic Wet Oxidation: From Powder to Structured Catalyst Using N-Doped Carbon Nanotubes. Topics in Catalysis. 2018:1-0. (web link)

[4] Nanocrystalline Calcium Carbonate Hydroxyapatites Containing Multiwall Carbon Nanotubes: Synthesis and Physicochemical Characterization

Ezhova ZA, Zakharov NA, Kuznetsov NT. Nanocrystalline Calcium Carbonate Hydroxyapatites Containing Multiwall Carbon Nanotubes: Synthesis and Physicochemical Characterization. Russian Journal of Inorganic Chemistry. 2018 Aug 1;63(8):1001-6. (web link)

[5] CORROSION PROTECTION OF STEEL WITH CARBON NANOTUBES INTO EPOXY PAINT COATING

E. V. BUTYRSKAYA1*, S. A. ZAPRYAGAEV2 AND L. S. NECHAYEVA1
1Department of Chemistry, Voronezh State University, Voronezh, Russia.
2Department of Computer Science, Voronezh State University, Voronezh, Russia. (web link)

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