Effects of heat treatment and poly(vinylpyrrolidone) (PVP) polymer on electrocatalytic activity of polyhedral Pt nanoparticles towards their methanol oxidation

2011 ◽  
Vol 289 (12) ◽  
pp. 1373-1386 ◽  
Author(s):  
Nguyen Viet Long ◽  
Michitaka Ohtaki ◽  
Masayuki Nogami ◽  
Tong Duy Hien
Keyword(s):  
Heat Treatment ◽  
Methanol Oxidation ◽  
Electrocatalytic Activity ◽  
Pt Nanoparticles

Fabrication of graphene-porous carbon–Pt nanocomposites with high electrocatalytic activity and durability for methanol oxidation

2015 ◽  
Vol 3 (44) ◽  
pp. 22170-22175 ◽  
Author(s):  
Lirui Nan ◽  
Wenbo Yue ◽  
Yang Jiang
Keyword(s):  
Methanol Oxidation ◽  
Porous Carbon ◽  
Electrocatalytic Activity ◽  
Pt Nanoparticles ◽  
Highly Dispersed

Highly dispersed Pt nanoparticles with a diameter of 2–3 nm are controllably fabricated on graphene-based porous carbon, and show dramatically improved electrocatalytic activity and durability for methanol oxidation compared to Pt nanoparticles supported by porous carbon or graphene.

Ultrafine Pt nanoparticle-decorated robust 3D N-doped porous graphene as an enhanced electrocatalyst for methanol oxidation

2016 ◽  
Vol 52 (2) ◽  
pp. 382-385 ◽  
Author(s):  
Yong Qin ◽  
Lei Chao ◽  
Jie Yuan ◽  
Yang Liu ◽  
Fuqiang Chu ◽  
...  
Keyword(s):  
Composite Material ◽  
Methanol Oxidation ◽  
Electrocatalytic Activity ◽  
Pt Nanoparticles ◽  
Average Diameter ◽  
Pt Nanoparticle ◽  
Covalent Bonds ◽  
Long Term Stability ◽  
Doped Graphene

Pt nanoparticles with an average diameter of 3 nm are loaded on a robust 3D N-doped graphene crosslinked with covalent bonds. The resulting composite material exhibits remarkable electrocatalytic activity and long-term stability toward methanol oxidation.

Pt Nanoparticles Supported on Nitrogen-Doped Carbon-TiO2 Composite as a High-Performance Electrocatalyst for Methanol Oxidation

2020 ◽  
Vol 18 (1) ◽  
Author(s):  
Jun Zhang ◽  
Jiao Chen ◽  
Fan Zhou ◽  
Xuewen Zeng ◽  
An Xing ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Surface Area ◽  
Methanol Oxidation ◽  
Electrocatalytic Activity ◽  
Direct Methanol Fuel Cells ◽  
Pt Nanoparticles ◽  
Great Promise ◽  
X Ray ◽  
Nitrogen Doped ◽  
Nitrogen Doped Carbon

Abstract Monodispersed Pt nanoparticles supported on a TiO2 and nitrogen-doped carbon composite (TiO2/NDC) were successfully synthesized via an efficient in situ self-assembly strategy and microwave-assisted polyol process. The Pt/TiO2/NDC catalyst exhibited superior electrocatalytic activity toward the methanol oxidation reaction (MOR). The electrochemically active surface area of the Pt/TiO2/NDC catalyst was twofold higher than that of the Pt/C/NDC catalyst. In addition, the Pt/TiO2/NDC catalyst revealed a better electrocatalytic activity and CO-tolerance as well as a stability toward the MOR. The combined characterization from Fourier transform infrared spectrum, Brunauer-Emmett-Teller surface area, scanning electron microscopy, transmission electron microscopy, energy dispersive spectrometer, thermogravimetric analysis, inductively coupled plasma atomic emissions spectrometry, X-ray diffraction, and X-ray photoelectron spectroscopy analyses demonstrated that the superior catalytic performance and stability of the Pt/TiO2/NDC catalysts likely arose from the synergistic effect of their unique morphology and composition as well as the electronic effect between the TiO2/NDC and Pt. This electrocatalyst holds great promise for application in direct methanol fuel cells.

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