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.

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

2019 ◽  
Author(s):  
Maria Rachele Guascito ◽  
Daniela Chirizzi ◽  
Emanuela Filippo ◽  
Francesco Milano ◽  
Antonio Tepore
Keyword(s):  
Fuel Cell ◽  
Oxygen Reduction ◽  
Methanol Oxidation ◽  
Photoelectron Spectroscopy ◽  
High Efficiency ◽  
Pt Nanoparticles ◽  
Synthesis And Characterization ◽  
Methanol Oxidation Reaction ◽  
X Ray

In fuel-cell technological development, one of the most important objectives is to minimize the amount of Pt, the most employed material as 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 as capping stabilizing substance. The as 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 demonstrate that the new material can be successfully employed in fuel cell either as anodic (for methanol oxidation reaction) and 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 may lead e. g. to Pt dissolution (at low pH) and paving the way for the development of biocompatible devices and on chip fuel cells.

Synthesis and characterization of Pt nanoparticles with different morphologies in mesoporous silica SBA-15 for methanol oxidation reaction

Nanoscale ◽  
2014 ◽  
Vol 6 (21) ◽  
pp. 12644-12654 ◽  
Author(s):  
C. S. Chen ◽  
Y. T. Lai ◽  
T. C. Chen ◽  
C. H. Chen ◽  
J. F. Lee ◽  
...  
Keyword(s):  
Carboxylic Acid ◽  
Methanol Oxidation ◽  
Oxidation Reaction ◽  
Pt Nanoparticles ◽  
Synthesis And Characterization ◽  
Methanol Oxidation Reaction ◽  
Oxidation Reactions ◽  
Carboxylic Acid Groups ◽  
Silica Materials

Mesoporous SBA-15 silica materials functionalized with and without carboxylic acid groups were used to effectively control the morphology of Pt crystals, and the materials thus obtained were applied to methanol oxidation reactions.

scholarly journals Preparation and characterization of high-dispersed pt/c nano-electrocatalysts for fuel cell applications.

2016 ◽  
Vol 54 (4) ◽  
pp. 472
Author(s):  
Hoang Anh Huy ◽  
Tran Van Man ◽  
Huynh Thien Tai ◽  
Ho Thi Thanh Van
Keyword(s):  
Fuel Cell ◽  
Ethylene Glycol ◽  
Pt Nanoparticles ◽  
Carbon Support ◽  
X Ray Diffraction ◽  
Simple Method ◽  
X Ray ◽  
Synthesis Conditions ◽  
Size Dispersion

Synthesis conditions are keys to controlling size and dispersion of Platinum (Pt) nanoparticle structures that is one of the most important goals in improving the electrochemical activity and durability of electrocatalyst as Pt nanoparticles catalyst for fuel cells. In this study, we introduce a simple method to address the effects of the temperature, pH and ethylene glycol enhancers (EG) on the morphology and size distribution of Pt nanoparticles catalyst in electrocatalyst fabrication process Pt nanoparticles on carbon support (Pt NPs/C). By using a facile method, we synthesized Pt NPs/C catalyst with and without using EG at room temperature and 60°C in pH = 6.5 and 11 solutions. The morphology, size, dispersion and activity of Pt nanoparticles catalyst on carbon support were characterized by using X-ray diffraction (XRD), Transmissionelectron microscopy (TEM) and Cyclic Voltammetry (CV). We found that the size, morphology and dispersion of Pt nanoparticles on carbon were strongly affected by adjusting the temperature, pH and the presence of ethylene glycol that could enhance catalytic activity of Platinum for fuel cell applications.

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