Ruthenium nanoparticles loaded on multiwalled carbon nanotubes for liquid-phase hydrogenation of fine chemicals: An exploration of confinement effect

2015 ◽  
Vol 329 ◽  
pp. 95-106 ◽  
Author(s):  
Yong Wang ◽  
Zeming Rong ◽  
Yu Wang ◽  
Peng Zhang ◽  
Yue Wang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Liquid Phase ◽  
Multiwalled Carbon Nanotubes ◽  
Confinement Effect ◽  
Fine Chemicals ◽  
Ruthenium Nanoparticles ◽  
Multiwalled Carbon ◽  
Liquid Phase Hydrogenation

scholarly journals Liquid‐Phase Assisted Engineering of Highly Strong SiC Composite Reinforced by Multiwalled Carbon Nanotubes

2020 ◽  
Vol 7 (21) ◽  
pp. 2002225
Author(s):  
Yuchi Fan ◽  
Erhong Song ◽  
Tufail Mustafa ◽  
Ruicong Liu ◽  
Pengpeng Qiu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Liquid Phase ◽  
Multiwalled Carbon Nanotubes ◽  
Multiwalled Carbon

scholarly journals Effect of Nanostructure on the Thermal Oxidation of Atomized Iron

2005 ◽  
Vol 899 ◽  
Author(s):  
Mohit Kumar ◽  
Naveen Rawat ◽  
Kalathur S Santhanam
Keyword(s):  
Carbon Nanotubes ◽  
Thermal Oxidation ◽  
Multiwalled Carbon Nanotubes ◽  
Iron Atom ◽  
Theoretical Calculations ◽  
Spin Transfer ◽  
Confinement Effect ◽  
Multiwalled Carbon

AbstractThe effect of nanostructure on the thermal oxidation of atomized iron has been investigated. Above 500°C atomized iron is oxidized in the presence of air. However, when iron is compacted with multiwalled carbon nanotubes (MWCNT) this oxidation is shifted by more than 100°C. Iron is protected by the nanostructure environment A large number of compositions of atomic ratios of iron and MWCNT have been examined in this study to understand the effect in detail. The effect of nanostructure in the thermal oxidation of iron is interpreted as due to iron atom experiencing extensive overlap and confinement effect. causing spin transfer. Based on theoretical calculations reported in the literature this confinement effect of iron is suggested to produce a transformation from 3d64s2 to an effective configuration of 3d84s0 producing spintronics effect.

Thermogravimetric Analysis of the Interaction of Ferromagnetic Metal Atom and Multiwalled Carbon Nanotubes

2008 ◽  
Vol 8 (4) ◽  
pp. 2044-2048 ◽  
Author(s):  
Naveen Rawat ◽  
Russel Gudyaka ◽  
Mohit Kumar ◽  
Bharat Joshi ◽  
Kalathur S. V. Santhanam
Keyword(s):  
Carbon Nanotubes ◽  
Thermogravimetric Analysis ◽  
Thermal Oxidation ◽  
Multiwalled Carbon Nanotubes ◽  
Cobalt Atom ◽  
Spin Transfer ◽  
Confinement Effect ◽  
Multiwalled Carbon ◽  
Electronic Distribution ◽  
Oxidative Behavior

This paper describes the thermal oxidative behavior of atomized iron or atomized cobalt in the presence of multiwalled carbon nanotubes (MWCNT). The thermogravimetric analysis shows the atomized iron thermal oxidation starts at about 500 °C that is absent when the atomized iron is sintered with multiwalled carbon naonotubes. The thermal oxidation of iron in the sintered samples requires the collapse of the multiwalled carbon nanotubes. A similar behavior is observed with atomized cobalt when its oxidation requires the collapse of the nanotubes. This thermal oxidative shift is interpreted as due to the atomized iron or atomized cobalt atom experiencing extensive overlap and confinement effect with multiwalled carbon nanotubes causing a spin transfer. This confinement effect is suggested to produce a transformation of iron from the outermost electronic distribution of 3d64s2 to an effective configuration of 3d84s0 and for cobalt 3d74s2 to 3d94s0 producing spintronics effect.

Effect of Multiwalled Carbon Nanotubes On Mechanical Properties of Concrete

2012 ◽  
Vol 2 (6) ◽  
pp. 166-168 ◽  
Author(s):  
Dr.T.Ch.Madhavi Dr.T.Ch.Madhavi ◽  
◽  
Pavithra.P Pavithra.P ◽  
Sushmita Baban Singh Sushmita Baban Singh ◽  
S.B.Vamsi Raj S.B.Vamsi Raj ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Multiwalled Carbon
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