Ultra-small metal nanoparticles supported on carbon nanotubes through surface chelation and hydrogen plasma reduction for methanol electro-oxidation

2019 ◽  
Vol 7 (42) ◽  
pp. 24502-24514
Author(s):  
Francisco Morales-Lara ◽  
Víctor K. Abdelkader-Fernández ◽  
Manuel Melguizo ◽  
Antonio Turco ◽  
Elisabetta Mazzotta ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Metal Nanoparticles ◽  
Hydrogen Plasma ◽  
Pt Nanoparticles ◽  
New Method ◽  
Multi Walled Carbon Nanotubes ◽  
Electro Oxidation ◽  
Walled Carbon Nanotubes ◽  
Plasma Reduction

This paper reports a new method to obtain ultra-small Pd and Pt nanoparticles (0.5–1 nm) supported on multi-walled carbon nanotubes (MWCNTs).

SYNTHESIS AND ELECTROCATALYSIS APPLICATION OF HYBRID PLATINUM/CERIUM OXIDE/MULTI-WALLED CARBON NANOTUBES

2011 ◽  
Vol 04 (03) ◽  
pp. 295-298 ◽  
Author(s):  
CHENG HAN CHEN ◽  
YUH-JING CHIOU ◽  
WEI JEN LIOU ◽  
WEI SYUAN LIN ◽  
HONG MING LIN ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Cerium Oxide ◽  
Average Particle Size ◽  
Pt Nanoparticles ◽  
Pt Catalyst ◽  
Average Particle ◽  
Redox Peak ◽  
Multi Walled Carbon Nanotubes ◽  
Electro Oxidation ◽  
Walled Carbon Nanotubes

The hybrid nanomaterials of platinum/cerium oxide/multi-walled carbon nanotubes ( Pt/CeO2 /MWCNTs) are synthesized successfully via impregnation and polyol processes. MWCNTs serve as an excellent supporter where CeO2 nanoparticles are decorated with well-distributed Pt nanoparticles. Images show the average particle size of crystalline Pt and CeO2 on MWCNTs are 3–7 and 20–30 nm, respectively. In electrochemical reaction, the redox peak of Pt/CeO2 -700°C/MWCNTs reveals lower potential and higher current density in methanol electro-oxidation than those of other Pt -based ones. The study indicates that the cerium oxide in Pt/CeO2 -700°C/MWCNTs catalyst will enhance significantly the oxygen ions transportation between the interface of Pt and MWCNTs to eliminate the CO poison effect on Pt catalyst.

A novel strategy for the synthesis of sulfur-doped carbon nanotubes as a highly efficient Pt catalyst support toward the methanol oxidation reaction

2017 ◽  
Vol 5 (36) ◽  
pp. 19467-19475 ◽  
Author(s):  
Jing-Jing Fan ◽  
You-Jun Fan ◽  
Rui-Xiang Wang ◽  
Sheng Xiang ◽  
Hua-Guo Tang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Oxidation Reaction ◽  
Catalyst Support ◽  
Pt Nanoparticles ◽  
Pt Catalyst ◽  
Methanol Oxidation Reaction ◽  
Multi Walled Carbon Nanotubes ◽  
Novel Strategy ◽  
Walled Carbon Nanotubes ◽  
Functionalized Mwcnts

Sulfur-doped multi-walled carbon nanotubes (S-MWCNTs) derived from PEDOT-functionalized MWCNTs can significantly improve the dispersion of supported Pt nanoparticles and enhance their electrocatalytic performance for the MOR.

scholarly journals Co metal nanoparticles deposition inside or outside multi-walled carbon nanotubes via facile support pretreatment

2018 ◽  
Vol 456 ◽  
pp. 657-665 ◽  
Author(s):  
Mariya A. Kazakova ◽  
Andrey S. Andreev ◽  
Alexander G. Selyutin ◽  
Arcady V. Ishchenko ◽  
Alexander V. Shuvaev ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Metal Nanoparticles ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

Carbon Nanotube Synthesis From Metal Nanoparticles Size-Classified by a Differential Mobility Analyzer

2011 ◽  
Author(s):  
Masahiro Tomoda ◽  
Teppei Kawahara ◽  
Yohei Tasaki ◽  
Yasuyuki Takata ◽  
Makoto Hirasawa ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Metal Nanoparticles ◽  
Chemical Vapor ◽  
Laser Vaporization ◽  
Electrical Mobility ◽  
Differential Mobility Analyzer ◽  
Differential Mobility ◽  
Catalyst Metal ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

In this study, carbon nanotubes (CNTs) were synthesized from size-classified catalyst metal nanoparticles to observe the effect of the nanoparticles’ diameter on the diameter of the CNTs. The nanoparticles were generated by laser vaporization and classified by a differential mobility analyzer, which sorts them by diameter according to differences in electrical mobility. After classification, the nanoparticles were collected on a Si substrate. CNTs were synthesized from these catalyst metal nanoparticles by using chemical vapor deposition. This experiment synthesized mainly multi-walled carbon nanotubes (MWNTs), with a small amount of single-walled carbon nanotubes (SWNTs). The reason is thought to be that the particles’ diameters were appropriate for MWNT synthesis.

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