Synthesis and Characterization of Au@Pt Nanoparticles with Ultrathin Platinum Overlayers

2015 ◽  
Vol 119 (11) ◽  
pp. 5982-5987 ◽  
Author(s):  
Ipshita Banerjee ◽  
V Kumaran ◽  
Venugopal Santhanam
Keyword(s):  
Pt Nanoparticles ◽  
Synthesis And Characterization

scholarly journals Synthesis and Characterization of Ligand‐Linked Pt Nanoparticles: Tunable, Three‐Dimensional, Porous Networks for Catalytic Hydrogen Sensing

ChemistryOpen ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 697-712
Author(s):  
Daniel Loof ◽  
Oliver Thüringer ◽  
Marco Schowalter ◽  
Christoph Mahr ◽  
Anmona Shabnam Pranti ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Pt Nanoparticles ◽  
Synthesis And Characterization ◽  
Hydrogen Sensing ◽  
Porous Networks ◽  
Catalytic Hydrogen

Synthesis and characterization of Au, Pt supported on graphene aerogel catalysts for CO oxidation at low temperature

2021 ◽  
Vol 11 (1) ◽  
pp. 118-122
Author(s):  
Chuyen Phan Thi ◽  
Hang Tran Thi Thanh ◽  
Phong Pham Nam ◽  
Ha Vu Thi Thu
Keyword(s):  
Low Temperature ◽  
Ambient Temperature ◽  
Co Oxidation ◽  
Pt Nanoparticles ◽  
Molar Ratio ◽  
Synthesis And Characterization ◽  
Graphene Aerogel ◽  
Highly Dispersed ◽  
Average Size

Au, Pt supported on graphene aerogel catalysts (PtAu/rGOA) with molar ratio of Pt and Au of 1:1, and total metal concentration of 5 % were successfully synthesized by hydrothermal method.  The obtained catalysts were characterized by Raman, XRD, XPS, HR-TEM, BET. It revealed that Au and Pt nanoparticles with average size of 3 – 5 nm were highly dispersed on aerogel graphene. The activity of these catalysts was tested  in CO oxidation. The results showed that the conversion of CO at ambient temperature was 100% during 25 minutes. Accordingly, PtAu/rGOA could be considered as a potential catalysts for CO oxidation at low temperature.

scholarly journals Synthesis and Characterization of Te Nanotubes Decorated with Pt Nanoparticles for a Fuel Cell Anode/Cathode Working at a Neutral pH

Catalysts ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 328
Author(s):  
Maria Guascito ◽  
Daniela Chirizzi ◽  
Emanuela Filippo ◽  
Francesco Milano ◽  
Antonio Tepore
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Oxygen Reduction ◽  
Methanol Oxidation ◽  
High Efficiency ◽  
Pt Nanoparticles ◽  
Synthesis And Characterization ◽  
Methanol Oxidation Reaction ◽  
X Ray

In fuel-cell technology development, one of the most important objectives is to minimize the amount of Pt, the most employed material as an oxygen reduction and methanol oxidation electro-catalyst. In this paper, we report the synthesis and characterization of Te nanotubes (TeNTs) decorated with Pt nanoparticles, readily prepared from stirred aqueous solutions of PtCl2 containing a suspension of TeNTs, and ethanol acting as a reducing agent, avoiding the use of any hydrophobic surfactants such as capping stabilizing substance. The obtained TeNTs decorated with Pt nanoparticles (TeNTs/PtNPs) have been fully characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), selected area diffraction patterns (SAD), X-ray photoelectron spectroscopy (XPS), and cyclic voltammetry (CV). We demonstrated that the new material can be successfully employed in fuel cells, either as an anodic (for methanol oxidation reaction) or a cathodic (for oxygen reduction reaction) electrode, with high efficiency in terms of related mass activities and on-set improvement. Remarkably, the cell operates in aqueous electrolyte buffered at pH 7.0, thus, avoiding acidic or alkaline conditions that might lead to, for example, Pt dissolution (at low pH), and paving the way for the development of biocompatible devices and on-chip fuel cells.

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