Reducing the Cost and Preserving the Reactivity in Noble-Metal-Based Catalysts: Oxidation of CO by Pt and Al-Pt Alloy Clusters Supported on Graphene

2016 ◽  
Vol 22 (15) ◽  
pp. 5181-5188 ◽  
Author(s):  
Kenichi Koizumi ◽  
Katsuyuki Nobusada ◽  
Mauro Boero
Keyword(s):  
Noble Metal ◽  
Oxidation Of Co ◽  
Pt Alloy ◽  
The Cost ◽  
Alloy Clusters

Cu-doped Co3O4 nanostructures as an efficient non-noble metal electrocatalyst for methanol oxidation in basic solution

2021 ◽  
Author(s):  
Shuang Zhao ◽  
Hui Yang ◽  
Yaru Liu ◽  
Yaodong Xing ◽  
Guangwen Cui ◽  
...  
Keyword(s):  
Methanol Oxidation ◽  
Noble Metal ◽  
Oxidation Reaction ◽  
Rational Design ◽  
Methanol Oxidation Reaction ◽  
Basic Solution ◽  
Urgent Task ◽  
The Cost ◽  
Co3o4 Nanostructures

Rational design of non-noble metal electrocatalysts is an urgent task to lower the cost of electrocatalysts for methanol oxidation reaction (MOR). Herein, mesoporous Cu-Co3O4 electrocatalysts have been prepared by using...

Structure–Reactivity Correlations in Metal Atom Substitutions of Monolayer-Protected Noble Metal Alloy Clusters

2017 ◽  
Vol 121 (41) ◽  
pp. 23224-23232 ◽  
Author(s):  
K. R. Krishnadas ◽  
Debasmita Ghosh ◽  
Atanu Ghosh ◽  
Ganapati Natarajan ◽  
Thalappil Pradeep
Keyword(s):  
Noble Metal ◽  
Metal Atom ◽  
Metal Alloy ◽  
Alloy Clusters

scholarly journals Understanding the Crucial Significance of the Temperature and Potential Window on the Stability of Carbon Supported Pt-alloy Nanoparticles as Oxygen Reduction Reaction Electrocatalysts

2021 ◽  
Author(s):  
Tina Đukić ◽  
Leonard Jean Moriau ◽  
Luka Pavko ◽  
Mitja Kostelec ◽  
Martin Prokop ◽  
...  
Keyword(s):  
Noble Metal ◽  
Inductively Coupled Plasma ◽  
Reduction Reaction ◽  
Critical Parameters ◽  
Metal Dissolution ◽  
Carbon Corrosion ◽  
Inductively Coupled ◽  
Pt Alloy ◽  
Voltage Potential ◽  
The Stability

The present research provides a comprehensive study of carbon-supported intermetallic Pt-alloy electrocatalysts and assesses their stability against metal dissolution in relation to the operating temperature and the potential window using two advanced electrochemical methodologies: (i) the in-house designed high-temperature disk electrode (HT-DE) methodology as well as (ii) a modification of the electrochemical flow cell coupled to an inductively coupled plasma mass spectrometer (EFC-ICP-MS), allowing for highly sensitive time- and potential-resolved measurements of metal dissolution. The findings contradict the generally accepted hypothesis that in contrast to the rate of carbon corrosion, which follows the Arrhenius law and increases exponentially with temperature, the kinetics of Pt and subsequently the less noble metal dissolution are supposed to be for the most part unaffected by temperature. On the contrary, clear evidence is presented that in addition to the importance of the voltage/potential window, the temperature is one of the most critical parameters governing the stability of Pt and thus, in the case of Pt-alloy electrocatalysts also the ability of the nanoparticles (NPs) to retain the less noble metal. Lastly, but also very importantly, results indicate that the rate of Pt redeposition significantly increases with temperature, which has been the main reason why mechanistic interpretation of the temperature-dependent kinetics related to the stability of Pt remained highly speculative until now.

IrO2/LiLa2IrO6 as a Robust Electrocatalyst for Oxygen Evolution Reaction in Acidic Media

2022 ◽  
Author(s):  
Huihui Liu ◽  
Haeseong Jang ◽  
Yu Wang ◽  
Min Gyu Kim ◽  
Haisen Li ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Noble Metal ◽  
Oxygen Evolution Reaction ◽  
Mixed Oxides ◽  
Acidic Media ◽  
Acid Media ◽  
Excellent Activity ◽  
The Cost

Recently reported non-noble metal-iridium mixed oxides not only exhibit excellent activity for the oxygen evolution reaction in acid media, but also reduce the cost. However, most of them fail to...

Adsorption and Dissociation of H2O2on Pt and Pt−Alloy Clusters and Surfaces

2006 ◽  
Vol 110 (35) ◽  
pp. 17452-17459 ◽  
Author(s):  
Perla B. Balbuena ◽  
Sergio R. Calvo ◽  
Eduardo J. Lamas ◽  
Pablo F. Salazar ◽  
Jorge M. Seminario
Keyword(s):  
Pt Alloy ◽  
Alloy Clusters ◽  
Adsorption And Dissociation

Formation and magnetic properties of Fe–Pt alloy clusters by plasma-gas condensation

2003 ◽  
Vol 83 (2) ◽  
pp. 350-352 ◽  
Author(s):  
D. L. Peng ◽  
T. Hihara ◽  
K. Sumiyama
Keyword(s):  
Magnetic Properties ◽  
Gas Condensation ◽  
Pt Alloy ◽  
Alloy Clusters

Model predictions and experimental characterization of Co-Pt alloy clusters

2007 ◽  
Vol 43 (1-3) ◽  
pp. 27-32 ◽  
Author(s):  
P. Moskovkin ◽  
S. Pisov ◽  
M. Hou ◽  
C. Raufast ◽  
F. Tournus ◽  
...  
Keyword(s):  
Experimental Characterization ◽  
Model Predictions ◽  
Pt Alloy ◽  
Alloy Clusters
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