TiO2 Nanotube Film as the Support of Platinum Electro-Catalyst with Enhanced Electrochemical Activity for Methanol Oxidation

2013 ◽  
Vol 750-752 ◽  
pp. 1696-1699
Author(s):  
Yong Ping Luo ◽  
Shun Jian Xu ◽  
Wei Zhong ◽  
Zong Hu Xiao
Keyword(s):  
Methanol Oxidation ◽  
Present Method ◽  
High Performance ◽  
Direct Methanol Fuel Cells ◽  
High Dispersion ◽  
X Ray Diffraction ◽  
X Ray ◽  
Direct Methanol ◽  
Methanol Fuel Cells ◽  
Scanning Electron

A facile method to prepare well-dispersed Platinum nanoparticles (Pt NPs) on FTO and TiO2 nanotube (TNTs) film was reported. The so-prepared Pt/FTO and Pt/TNT film electrodes are characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD). The results show Pt NPs have been dispersed on the supporting matrixs uniformly. Electrochemical investigations indicate that Pt/TNT has higher electrocatalytic activity and better tolerance to poisoning species in methanol oxidation than Pt/FTO, which can be ascribed to the high dispersion of Pt NPs on the TiO2 nanotubes surface. The present method is promising for the design of high performance catalysts for direct methanol fuel cells.

A Comparative Investigation of the Electrocatalytic Oxidation of Methanol on Pt Modified TiO2 Nanotube Electrodes with Two Methods

2014 ◽  
Vol 521 ◽  
pp. 586-590
Author(s):  
Yong Ping Luo ◽  
Shun Jian Xu ◽  
Zong Hu Xiao ◽  
Yong Huang ◽  
Wei Zhong ◽  
...  
Keyword(s):  
High Performance ◽  
Direct Methanol Fuel Cells ◽  
Comparative Investigation ◽  
Electrolytic Deposition ◽  
X Ray Diffraction ◽  
X Ray ◽  
Oxidation Of Methanol ◽  
Direct Methanol ◽  
Electro Catalytic Oxidation ◽  
Electro Catalytic Activity

In this work, it was investigated and compared that electro-catalytic oxidation of methanol in acidic medium at TiO2nanotube (TNT) electrode modified by platinum (Pt) with two methods. Pt modified TNT electrodes were prepared by thermal decomposition (TD) and electrolytic deposition (ED). The so-prepared TD-Pt/TNT and ED-Pt/TNT electrodes were characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD). Electrochemical investigations indicate that ED-Pt/TNT has higher electro-catalytic activity and better tolerance to poisoning species in methanol oxidation than TD-Pt/TNT, which can be ascribed to the higher dispersion and stability of ED-Pt than TD-Pt on TNT electrode. The present work provides some basis for the design of high performance catalysts for direct methanol fuel cells.

Kinetic analysis of carbon monoxide and methanol oxidation on high performance carbon-supported Pt–Ru electrocatalyst for direct methanol fuel cells

2011 ◽  
Vol 196 (7) ◽  
pp. 3503-3512 ◽  
Author(s):  
Amado Velázquez-Palenzuela ◽  
Francesc Centellas ◽  
José Antonio Garrido ◽  
Conchita Arias ◽  
Rosa María Rodríguez ◽  
...  
Keyword(s):  
Carbon Monoxide ◽  
Fuel Cells ◽  
Kinetic Analysis ◽  
Methanol Oxidation ◽  
High Performance ◽  
Direct Methanol Fuel Cells ◽  
Direct Methanol ◽  
Methanol Fuel Cells

Bimetallic PtRu Nanoparticles Supported on Functionalized Multiwall Carbon Nanotubes as High Performance Electrocatalyst for Direct Methanol Fuel Cells

NANO ◽  
2016 ◽  
Vol 11 (02) ◽  
pp. 1650022 ◽  
Author(s):  
Chunhui Tan ◽  
Juhui Sa ◽  
Feipeng Cai ◽  
Bo Jiang ◽  
Gai Yang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Fuel Cells ◽  
Methanol Oxidation ◽  
Direct Methanol Fuel Cells ◽  
Multiwall Carbon Nanotubes ◽  
X Ray ◽  
Direct Methanol ◽  
Methanol Fuel Cells ◽  
Multiwall Carbon ◽  
Ptru Nanoparticles

PtRu nanoparticles (NPs) supported on acid treated multiwall carbon nanotubes (Pt1Ru1/MWCNTs) were prepared by a modified polyol method without adding any other surfactant or protective agent. The structural and compositional properties of the as-obtained samples were characterized by transmission electron microscopy (TEM), energy dispersive X-ray analysis (EDX), X-ray diffraction (XRD) and X-ray photoelectron (XPS) spectroscopy. The electrocatalytic performance of the catalyst was evaluated by cyclic voltammetry (CV), CO stripping voltammetry and chronoamperometry, indicating a high catalytic activity, excellent CO tolerance and stability for methanol oxidation. Interestingly, a series of accurate controllable experiments have been designed to explore the enhancement mechanism of Pt1Ru1/MWCNTs for methanol oxidation reaction. Most importantly, Pt1Ru1/MWCNTs composites were used as an anode catalyst in the direct methanol fuel cells (DMFCs) exhibiting outstanding power density (126.1 mW/cm[Formula: see text] 1.7 times higher than that of the commercial catalyst of Pt1Ru1/C (74.1 mW/cm[Formula: see text] (E-TEK).

scholarly journals Novel Anode Catalyst for Direct Methanol Fuel Cells

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
S. Basri ◽  
S. K. Kamarudin ◽  
W. R. W. Daud ◽  
Z. Yaakob ◽  
A. A. H. Kadhum
Keyword(s):  
Fuel Cells ◽  
Reaction Kinetics ◽  
Methanol Oxidation ◽  
Photoelectron Spectroscopy ◽  
Direct Methanol Fuel Cells ◽  
Binding Energies ◽  
Methanol Oxidation Reaction ◽  
X Ray ◽  
Direct Methanol ◽  
Methanol Fuel Cells

PtRu catalyst is a promising anodic catalyst for direct methanol fuel cells (DMFCs) but the slow reaction kinetics reduce the performance of DMFCs. Therefore, this study attempts to improve the performance of PtRu catalysts by adding nickel (Ni) and iron (Fe). Multiwalled carbon nanotubes (MWCNTs) are used to increase the active area of the catalyst and to improve the catalyst performance. Electrochemical analysis techniques, such as energy dispersive X-ray spectrometry (EDX), X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), and X-ray photoelectron spectroscopy (XPS), are used to characterize the kinetic parameters of the hybrid catalyst. Cyclic voltammetry (CV) is used to investigate the effects of adding Fe and Ni to the catalyst on the reaction kinetics. Additionally, chronoamperometry (CA) tests were conducted to study the long-term performance of the catalyst for catalyzing the methanol oxidation reaction (MOR). The binding energies of the reactants and products are compared to determine the kinetics and potential surface energy for methanol oxidation. The FESEM analysis results indicate that well-dispersed nanoscale (2–5 nm) PtRu particles are formed on the MWCNTs. Finally, PtRuFeNi/MWCNT improves the reaction kinetics of anode catalysts for DMFCs and obtains a mass current of 31 A g−1catalyst.

Preparation and Characterization of Pt/Superfine Mesocarbon Microbead Powers Electrocatalysts

2005 ◽  
Vol 3 (3) ◽  
pp. 358-360 ◽  
Author(s):  
Jia Rong-Li ◽  
Wang Cheng-Yang ◽  
Zhu Bin
Keyword(s):  
Reduction Method ◽  
Direct Methanol Fuel Cells ◽  
Electrochemical Analysis ◽  
X Ray Diffraction ◽  
X Ray ◽  
Transmission Electron ◽  
Platinum Particles ◽  
Platinum Electrocatalyst ◽  
Direct Methanol

Superfine mesocarbon microbead powders (SFMCMBs) as the new supports for platinum electrocatalysts were first investigated. The Pt∕SFMCMB electrocatalysts were prepared by an impregnation-reduction method, with hexachloroplatinic acid as the platinum precursor and formaldehyde as the reducing agent. The catalysts were characterized with x-ray diffraction (XRD), field emission gun transmission electron microscope (TEM), and electrochemical analysis. TEM photos showed the platinum particles were dispersed uniformly on the surface of SFMCMBs and there existed a little aggregation of platinum particles in the Pt∕SFMCMB catalysts. The TEM photos showed the existence of the platinum on the supports where the average platinum particle size were 4-6nm. The electrochemical analysis proved that SFMCMBs are excellent candidates to be used as the support of platinum electrocatalyst for methanol electrochemical oxidation as the potential catalyst candidate for direct methanol fuel cells (DMFCs).

Bimetallic alloy and semiconductor support synergistic interaction effects for superior electrochemical catalysis

Nanoscale ◽  
2020 ◽  
Vol 12 (7) ◽  
pp. 4719-4728 ◽  
Author(s):  
Yunshan Zheng ◽  
Yan Zhai ◽  
Maomao Tu ◽  
Xinhua Huang ◽  
Mingcong Shu ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Methanol Oxidation ◽  
Oxidation Reaction ◽  
Direct Methanol Fuel Cells ◽  
Methanol Oxidation Reaction ◽  
Electrochemical Catalysis ◽  
Anode Catalysts ◽  
Bimetallic Alloy ◽  
Direct Methanol ◽  
Methanol Fuel Cells

The design and fabrication of economically viable anode catalysts for the methanol oxidation reaction (MOR) have been challenging issues in direct methanol fuel cells (DMFCs) over the decades.

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