Highly-selective synthesis of trimetallic PtRuCu nanoframes as robust catalysts for the methanol oxidation reaction

PtRuCu NFs/C exhibited much higher mass activity and specific activity than commercial Pt/C and PtRuCu NPs/C towards the MOR due to the frame nanostructures and the synergistic effect of the trimetallics.

Download Full-text

Carbon-supported Pt5P2 nanoparticles used as a high-performance electrocatalyst for the methanol oxidation reaction

Journal of Materials Chemistry A ◽

10.1039/d0ta02300k ◽

2020 ◽

Vol 8 (20) ◽

pp. 10433-10438

Author(s):

Mengmeng Li ◽

Yan Fang ◽

Genlei Zhang ◽

Peng Cui ◽

Zhenzhen Yang ◽

...

Keyword(s):

Methanol Oxidation ◽

Oxidation Reaction ◽

High Performance ◽

Specific Activity ◽

Methanol Oxidation Reaction ◽

Mass Activity

The Pt5P2/C catalyst achieves a factor of 11.0 and 9.1 enhancement in mass activity (MA) and specific activity (SA) for MOR relative to Pt/C, respectively, while a factor of 9.1 and 7.9 enhancement in MA and SA relative to PtRu/C-JM.

Download Full-text

Surface oxygen-mediated ultrathin PtRuM (Ni, Fe, and Co) nanowires boosting methanol oxidation reaction

Journal of Materials Chemistry A ◽

10.1039/c9ta11745h ◽

2020 ◽

Vol 8 (5) ◽

pp. 2323-2330 ◽

Cited By ~ 12

Author(s):

Hongdong Li ◽

Yue Pan ◽

Dan Zhang ◽

Yi Han ◽

Zuochao Wang ◽

...

Keyword(s):

Methanol Oxidation ◽

Acidic Medium ◽

Oxidation Reaction ◽

Methanol Oxidation Reaction ◽

Surface Oxygen ◽

Mass Activity ◽

Co Nanowires ◽

Excellent Stability

The surface-oxygen-modified ultrathin Pt62Ru18Ni20–O/C nanowires catalyst exhibits outstanding mass activity, excellent stability, and CO anti-poisoning for methanol oxidation reaction in acidic medium by DFT and electrochemical experiments.

Download Full-text

Preparation of highly dispersed carbon supported AuPt nanoparticles via a capping agent-free route for efficient methanol oxidation

Journal of Materials Chemistry A ◽

10.1039/c7ta08343b ◽

2018 ◽

Vol 6 (1) ◽

pp. 104-109 ◽

Cited By ~ 15

Author(s):

Lijuan Lu ◽

Yao Nie ◽

Yao Wang ◽

Guangping Wu ◽

Lingjie Li ◽

...

Keyword(s):

Synergistic Effect ◽

Methanol Oxidation ◽

Oxidation Reaction ◽

Methanol Oxidation Reaction ◽

Capping Agent ◽

Highly Dispersed

Bimetallic AuPt catalysts were synthesized via a facile capping agent-free route. Compared to the catalysts with too much Pt on the surface, the surface Pt-rich catalysts with a few exposed Au atoms exhibit the enhanced methanol oxidation reaction activity due to the stronger synergistic effect between Pt and Au.

Download Full-text

One-pot synthesis of core@shell PdAuPt nanodendrite@Pd nanosheets for boosted visible light-driven methanol electrooxidation

Chemical Communications ◽

10.1039/d1cc06059g ◽

2021 ◽

Author(s):

Fei Gao ◽

Yangping Zhang ◽

Huaming You ◽

Zhuolin Li ◽

Bin Zou ◽

...

Keyword(s):

Visible Light ◽

Methanol Oxidation ◽

Oxidation Reaction ◽

Methanol Oxidation Reaction ◽

Core Shell ◽

One Pot ◽

Simple Method ◽

One Pot Synthesis ◽

Visible Light Driven ◽

Mass Activity

We developed a simple method to obtain the PdPtAu@Pd core@shell catalyst for methanol oxidation reaction. The PdPtAu@Pd exhibited superior photo-electrocatalytic behaviors, whose mass activity is 2.3 and 6.7 times higher than Pt/C and Pd/C.

Download Full-text

Nanomaterials-Based PEM Electrodes by Combining Chemical and Physical Depositions

Journal of Fuel Cell Science and Technology ◽

10.1115/1.4003629 ◽

2011 ◽

Vol 8 (4) ◽

Cited By ~ 6

Author(s):

R. Giorgi ◽

L. Giorgi ◽

S. Gagliardi ◽

E. Salernitano ◽

M. Alvisi ◽

...

Keyword(s):

Polymer Electrolyte ◽

Methanol Oxidation ◽

Oxidation Reaction ◽

Specific Activity ◽

Catalyst Activity ◽

Catalyst Support ◽

Sputter Deposition ◽

Utilization Efficiency ◽

Methanol Oxidation Reaction ◽

Carbon Based

The real market penetration of polymer electrolyte fuel cells is hindered by the high cost of this technology mainly due to the expensive platinum catalyst. Two approaches are followed to reduce the cost: one way is to increase the Pt utilization efficiency reducing at the same time the total load and the other way is to increase the catalytic activity of the catalyst/support assembly. In this work, the increase of utilization efficiency is addressed by optimizing the catalyst distribution on the uppermost layer of the electrode via electrodeposition and sputter deposition, while the improvement of the catalyst activity is pursued by nanostructuring the catalysts and the carbon-based supports. A very low Pt loading (0.006 mg cm−2) was obtained by sputter deposition on electrodes that exhibited a mass specific activity for methanol oxidation reaction better than a commercial product. Carbon nanofibers used as catalyst support of electrodeposited platinum nanoparticles resulted in improved mass specific activity and long term stability compared to conventional carbon-based supports. Finally, PtAu alloys developed by sputter deposition were found more efficient than commercial PtRu catalyst for the methanol oxidation reaction. In conclusion, polymer electrolyte membrane fuel cell electrode based on nanomaterials, developed by combining physical and chemical deposition processes, showed outstanding electrochemical performance.

Download Full-text

Surfactant-Free Synthesis of Three-Dimensional Perovskite Titania-Based Micron-Scale Motifs Used as Catalytic Supports for the Methanol Oxidation Reaction

Molecules ◽

10.3390/molecules26040909 ◽

2021 ◽

Vol 26 (4) ◽

pp. 909

Author(s):

Nathaniel Hurley ◽

Luyao Li ◽

Christopher Koenigsmann ◽

Stanislaus S. Wong

Keyword(s):

Chemical Composition ◽

Methanol Oxidation ◽

Oxidation Reaction ◽

Specific Activity ◽

Three Dimensional ◽

Methanol Oxidation Reaction ◽

Perovskite Materials ◽

Synthesis Procedure ◽

Catalytic Supports ◽

A Site

We synthesized and subsequently rationalized the formation of a series of 3D hierarchical metal oxide spherical motifs. Specifically, we varied the chemical composition within a family of ATiO3 (wherein “A” = Ca, Sr, and Ba) perovskites, using a two-step, surfactant-free synthesis procedure to generate structures with average diameters of ~3 microns. In terms of demonstrating the practicality of these perovskite materials, we have explored their use as supports for the methanol oxidation reaction (MOR) as a function of their size, morphology, and chemical composition. The MOR activity of our target systems was found to increase with decreasing ionic radius of the “A” site cation, in order of Pt/CaTiO3 (CTO) > Pt/SrTiO3 (STO) > Pt/BaTiO3 (BTO). With respect to morphology, we observed an MOR enhancement of our 3D spherical motifs, as compared with either ultra-small or cubic control samples. Moreover, the Pt/CTO sample yielded not only improved mass and specific activity values but also a greater stability and durability, as compared with both commercial TiO2 nanoparticle standards and precursor TiO2 templates.

Download Full-text