Spiny-porous platinum nanotubes with enhanced electrocatalytic activity for methanol oxidation

2015 ◽  
Vol 3 (4) ◽  
pp. 1388-1391 ◽  
Author(s):  
Yunpeng Zuo ◽  
Kai Cai ◽  
Long Wu ◽  
Tingting Li ◽  
Zhicheng Lv ◽  
...  
Keyword(s):  
Methanol Oxidation ◽  
Electrocatalytic Activity ◽  
Enhanced Activity ◽  
Electro Oxidation

A approach is developed to synthesize self-supported spiny-porous Pt nanotubes with enhanced activity and stability to methanol electro-oxidation.

scholarly journals Carbon Supported Au-Pd-PdO with Low Metal Loading for Electro-oxidation of Methanol in Alkaline Medium

2014 ◽  
Vol 17 (3) ◽  
pp. 133-138
Author(s):  
V-H Ramos-Sánchez ◽  
Diana Brito-Picciotto ◽  
Ramón Gómez-Vargas ◽  
David Chávez-Flores ◽  
Edgar Valenzuela
Keyword(s):  
Methanol Oxidation ◽  
Alkaline Medium ◽  
Electrocatalytic Activity ◽  
Chemical Reduction ◽  
Active Phase ◽  
Metal Loading ◽  
Oxidation Of Methanol ◽  
Electro Oxidation

The present work examined two Pd-based alloys supported on carbon: AuPd and Au2Pd, both synthesized by chemical reduction with NaBH4. The low Au-Pd loading electrocatalysts were physicochemically and electrochemically characterized. Electrocatalytic activity for methanol oxidation was found exclusively in AuPd/C. However, it was revealed that such reaction was promoted by PdO occurring in the actual active phase of the supported electrocatalyst, through the formation of Au-Pd-PdO ensemble sites.

Three dimensional palladium nanoflowers with enhanced electrocatalytic activity towards the anodic oxidation of formic acid

2015 ◽  
Vol 3 (3) ◽  
pp. 973-977 ◽  
Author(s):  
Bingqing Zhang ◽  
Hongliang Peng ◽  
Lijun Yang ◽  
Hualing Li ◽  
Haoxiong Nan ◽  
...  
Keyword(s):  
Formic Acid ◽  
Anodic Oxidation ◽  
Electrocatalytic Activity ◽  
Three Dimensional ◽  
Pd Nanoparticles ◽  
Enhanced Activity ◽  
Electro Oxidation

Pd nanoflowers (Pd-NF) composed of ultrathin Pd nanosheets show significantly enhanced activity towards the electro-oxidation of formic acid compared to ordinary Pd nanoparticles.

Three-dimensional astrocyte-network Ni–P–O compound with superior electrocatalytic activity and stability for methanol oxidation in alkaline environments

2015 ◽  
Vol 3 (8) ◽  
pp. 4669-4678 ◽  
Author(s):  
Y. Y. Tong ◽  
C. D. Gu ◽  
J. L. Zhang ◽  
M. L. Huang ◽  
H. Tang ◽  
...  
Keyword(s):  
Methanol Oxidation ◽  
Self Assembly ◽  
Electrocatalytic Activity ◽  
Three Dimensional ◽  
Alkaline Environments ◽  
Electro Oxidation

A self-assembly three-dimensional astrocyte-network Ni–P–O compound catalyzes methanol electro-oxidation in alkaline environments with superior electrocatalytic activity and stability.

Electrocatalytic activity of carbon-supported Pt–Au nanoparticles for methanol electro-oxidation

2007 ◽  
Vol 52 (18) ◽  
pp. 5599-5605 ◽  
Author(s):  
In-Su Park ◽  
Kug-Seung Lee ◽  
Dae-Sik Jung ◽  
Hee-Young Park ◽  
Yung-Eun Sung
Keyword(s):  
Electrocatalytic Activity ◽  
Au Nanoparticles ◽  
Electro Oxidation

scholarly journals Synthesis and Characterization of Electrodeposited C-PANI-Pd-Ni Composite Electrocatalyst for Methanol Oxidation

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
S. S. Mahapatra ◽  
S. Shekhar ◽  
B. K. Thakur ◽  
H. Priyadarshi
Keyword(s):  
Methanol Oxidation ◽  
Electrocatalytic Activity ◽  
Electrochemical Impedance ◽  
Synergistic Effects ◽  
Catalytic Performance ◽  
Charge Transfer Resistance ◽  
Pani Film ◽  
Composite Electrodes ◽  
Transfer Resistance ◽  
Onset Potential

Electropolymerization of aniline at the graphite electrodes was achieved by potentiodynamic method. Electrodeposition of Pd (C-PANI-Pd) and Ni (C-PANI-Ni) and codeposition of Pd-Ni (C-PANI-Pd-Ni) microparticles into the polyaniline (PANI) film coated graphite (C-PANI) were carried out under galvanostatic control. The morphology and composition of the composite electrodes were obtained using scanning electron microscopy (SEM) and energy dispersive X-ray analysis (EDX) techniques. The electrochemical behavior and electrocatalytic activity of the electrode were characterized using cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and chronoamperometric (CA) methods in acidic medium. The C-PANI-Pd-Ni electrode showed an improved catalytic performance towards methanol oxidation in terms of lower onset potential, higher anodic oxidation current, greater stability, lower activation energy, and lower charge transfer resistance. The enhanced electrocatalytic activity might be due to the greater permeability of C-PANI films for methanol molecules, better dispersion of Pd-Ni microparticles into the polymer matrixes, and the synergistic effects between the dispersed metal particles and their matrixes.

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