Synthesis and Activation of Pt–Cu Alloy Nanocrystals with Controlled Structure and Exposed Facets for Ethylene Glycol Oxidation

NANO ◽  
2019 ◽  
Vol 14 (06) ◽  
pp. 1950069
Author(s):  
Yunong Zhou ◽  
Chao Hu ◽  
Weidong Zhang ◽  
Hong Chen ◽  
Gang Yu
Keyword(s):  
Ethylene Glycol ◽  
Active Sites ◽  
Synergistic Effects ◽  
Alloy Nanocrystals ◽  
Cu Alloy ◽  
Excellent Activity ◽  
Ethylene Glycol Oxidation ◽  
Controlled Structure ◽  
Co Reduction ◽  
Exposed Facets

The ability to control the shape, structure and faceting characteristics of bimetallic alloy nanocrystals (NCs) has been vital for designing a catalyst with excellent activity and durability in fuel cells. However, it has remained a significant challenge to synthesize platinum–copper (Pt–Cu) alloy NCs with controlled structure and exposed facets. Herein, Pt–Cu alloy NCs with different shapes, structures and facets were synthesized via a one-step direct chemical co-reduction method employing various glucose concentrations. The results showed that the prepared Pt–Cu alloy NCs exhibited very interesting facet-dependent electrocatalytic properties for ethylene glycol oxidation. In comparison with other prepared Pt–Cu alloy NCs and commercial Pt/C, Pt–Cu alloy NPs with (111)-dominant facets showed higher electrocatalytic activity and durability for ethylene glycol oxidation. Alloy NPs showing prominent electrocatalytic performance were attributed to the predominant (111) facets on NP surfaces serving as catalytic active sites, in addition to added Cu providing unique electronic and synergistic effects. The present work highlighted that these NPs with (111)-dominant facets were indeed promising candidates as electrocatalysts with excellent activity and superior durability.

Facilitated Utilization of Active Sites with Core‐Shell PdPt@Pt/RGO Nanocluster Structures for Improved Electrocatalytic Ethylene Glycol Oxidation

2018 ◽  
Vol 5 (18) ◽  
pp. 2645-2652 ◽  
Author(s):  
Guohong Ren ◽  
Yajun Liu ◽  
Weigang Wang ◽  
Mingqian Wang ◽  
Yang Zhou ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Active Sites ◽  
Core Shell ◽  
Ethylene Glycol Oxidation

Implanting Mo Atoms into Surface Lattice of Pt3Mn Alloys Enclosed by High-Indexed Facets: Promoting Highly Active Sites for Ethylene Glycol Oxidation

ACS Catalysis ◽  
2018 ◽  
Vol 9 (1) ◽  
pp. 442-455 ◽  
Author(s):  
Yao Wang ◽  
Hongying Zhuo ◽  
Hui Sun ◽  
Xin Zhang ◽  
Xiaoping Dai ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Active Sites ◽  
Highly Active ◽  
Surface Lattice ◽  
Ethylene Glycol Oxidation

A facile general strategy for synthesis of palladium-based bimetallic alloyed nanodendrites with enhanced electrocatalytic performance for methanol and ethylene glycol oxidation

2014 ◽  
Vol 2 (32) ◽  
pp. 12899-12906 ◽  
Author(s):  
Jie-Ning Zheng ◽  
Li-Li He ◽  
Fang-Yi Chen ◽  
Ai-Jun Wang ◽  
Meng-Wei Xue ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
General Strategy ◽  
Reduction Strategy ◽  
Catalytic Activities ◽  
Electrocatalytic Performance ◽  
Ethylene Glycol Oxidation ◽  
Co Reduction

PdM (M = Pt, Co, and Ni) nanodendrites were fabricated by a co-reduction strategy. The nanodendrites displayed the enhanced catalytic activities and stabilities for methanol and ethylene glycol oxidation.

Development of Sn@Pt Core-Shell Nanostructures Supported on Vulcan and N-Doped Graphene as Nanocatalysts for the Ethylene Glycol Oxidation Reaction

2018 ◽  
Vol 86 (13) ◽  
pp. 575-584
Author(s):  
G. Hernández-Vázquez ◽  
S. Dessources ◽  
Ivonne Liliana Alonso-Lemus ◽  
Beatriz Escobar-Morales ◽  
Edilso Reguera ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Oxidation Reaction ◽  
Core Shell ◽  
Shell Nanostructures ◽  
Doped Graphene ◽  
Ethylene Glycol Oxidation

scholarly journals Intermetallic Platinum Alloy Nanoparticles and Single Atoms Hybrid Electrocatalysts for Proton Exchange Membrane Fuel Cells

2021 ◽  
Author(s):  
Minhua Shao ◽  
Fei Xiao ◽  
Qi Wang ◽  
Gui-Liang Xu ◽  
Xueping Qin ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Active Sites ◽  
Proton Exchange Membrane ◽  
Synergistic Effects ◽  
Reduction Reaction ◽  
Proton Exchange ◽  
Alloy Nanoparticles ◽  
Single Atoms ◽  
Low Pt Loading ◽  
Exchange Membrane

Abstract Proton exchange membrane fuel cell converts hydrogen and oxygen into electricity with zero emission1. The high cost and low durability of Pt-based electrocatalysts for oxygen reduction reaction hinder its wide applications2,3. The development of non-precious metal electrocatalysts also reaches the bottleneck because of the low activity and durability4,5. Here we rationally design a hybrid electrocatalyst consisting of atomically dispersed Pt and Fe single atoms and intermetallic PtFe alloy nanoparticles. The Pt mass activity of the hybrid catalyst is 3.5 times higher than that of commercial Pt/C in a fuel cell. More importantly, the fuel cell with an ultra-low Pt loading in the cathode (0.015 mgPt cm-2) shows unprecedented durability, with 93.6% activity retention after 100,000 cycles and no noticeable current drop at 0.6 V for at least 206 h. These results highlight the importance of the synergistic effects among active sites in hybrid electrocatalysts and provide an alternative way to design more active and durable low-Pt electrocatalysts for electrochemical devices.

Electrochemical and Infrared Spectroscopic Quantitative Determination of the Platinum-Catalyzed Ethylene Glycol Oxidation Mechanism at CO Adsorption Potentials

Langmuir ◽  
1996 ◽  
Vol 12 (10) ◽  
pp. 2594-2601 ◽  
Author(s):  
Bonnie Wieland ◽  
J. Patrick Lancaster ◽  
Cherokee S. Hoaglund ◽  
Paul Holota ◽  
Wade J. Tornquist
Keyword(s):  
Ethylene Glycol ◽  
Quantitative Determination ◽  
Co Adsorption ◽  
Oxidation Mechanism ◽  
Infrared Spectroscopic ◽  
Ethylene Glycol Oxidation
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