Effect of cocatalyst and composition on catalytic performance of amorphous alloys for ethanol electrooxidation and PEMFCs

Fe-based amorphous alloys have shown great potential in degrading azo dyes and other organic pollutants. It has been widely investigated as a kind of environmentally friendly material for wastewater remediation. In this paper, we studied the effect of Ni addition on the catalytic performance of Fe87Si5B2P3Nb2Cu1 amorphous alloy for degradation of methylene blue dyes and analyzed the reaction mechanism. (Fe87Si5B2P3Nb2Cu1)86Ni14 amorphous powder with desirable performance was produced by specific ball milling durations. Characterization of the Fe87Si5B2P3Nb2Cu1 and (Fe87Si5B2P3Nb2Cu1)86Ni14 amorphous alloys prepared by ball milling was performed by XRD and SEM. Fe87Si5B2P3Nb2Cu1 and (Fe87Si5B2P3Nb2Cu1)86Ni14 amorphous alloys were used as catalysts to catalyze the degradation of methylene blue dyes, which were detected by UV-VIS near-infrared spectrophotometer. By a series of comparative experiments, it was found that a catalyst dosage of 0.2 g and a reaction temperature of 80 °C were conditions that produced the best catalytic effect. The degradation rate of (Fe87Si5B2P3Nb2Cu1)86Ni14 amorphous alloy to methylene blue dyes prepared by ball milling increased from 67.76% to 99.99% compared with the Fe87Si5B2P3Nb2Cu1 amorphous alloy under the same conditions.

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Nanoporous CeO2 Supports Prepared from Amorphous Alloys: Enhanced Catalytic Performance for Hydrogen Generation from Formic Acid

Bulletin of the Chemical Society of Japan ◽

10.1246/bcsj.20180214 ◽

2018 ◽

Vol 91 (12) ◽

pp. 1710-1714 ◽

Cited By ~ 4

Author(s):

Ai Nozaki ◽

Ayane Yamashita ◽

Ryosuke Fujiwara ◽

Chiyako Ueda ◽

Hiroaki Yamamoto ◽

...

Keyword(s):

Formic Acid ◽

Amorphous Alloys ◽

Hydrogen Generation ◽

Catalytic Performance

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When ternary PdCuP alloys meet ultrathin nanowires: Synergic boosting of catalytic performance in ethanol electrooxidation

Applied Catalysis B Environmental ◽

10.1016/j.apcatb.2019.04.066 ◽

2019 ◽

Vol 253 ◽

pp. 271-277 ◽

Cited By ~ 25

Author(s):

Hao Lv ◽

Lizhi Sun ◽

Dongdong Xu ◽

Yanhang Ma ◽

Ben Liu

Keyword(s):

Catalytic Performance ◽

Ethanol Electrooxidation

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Three-dimensional Au0.5/reduced graphene oxide/Au0.5/reduced graphene oxide/carbon fiber electrode and its high catalytic performance toward ethanol electrooxidation in alkaline media

Journal of Materials Chemistry A ◽

10.1039/c4ta05193a ◽

2015 ◽

Vol 3 (8) ◽

pp. 4389-4398 ◽

Cited By ~ 47

Author(s):

Caiqin Wang ◽

Huiwen Wang ◽

Chunyang Zhai ◽

Fangfang Ren ◽

Mingshan Zhu ◽

...

Keyword(s):

Graphene Oxide ◽

Reduced Graphene Oxide ◽

Three Dimensional ◽

Catalytic Performance ◽

Alkaline Media ◽

Layer By Layer ◽

Ethanol Electrooxidation ◽

Reduced Graphene ◽

Carbon Fiber Electrode ◽

Fiber Electrode

Highly efficient catalytic activity for the ethanol electrooxidation reaction was achieved using a three-dimensional layer-by-layer Au0.5/RGO/Au0.5/RGO/CF electrode in alkaline medium.

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Promoted C–C bond cleavage over intermetallic TaPt3 catalyst toward low-temperature energy extraction from ethanol

Energy & Environmental Science ◽

10.1039/c4ee03746d ◽

2015 ◽

Vol 8 (6) ◽

pp. 1685-1689 ◽

Cited By ~ 29

Author(s):

Rajesh Kodiyath ◽

Gubbala V. Ramesh ◽

Eva Koudelkova ◽

Toyokazu Tanabe ◽

Mikio Ito ◽

...

Keyword(s):

Low Temperature ◽

Bond Cleavage ◽

Catalytic Performance ◽

Energy Extraction ◽

Ethanol Electrooxidation

Intermetallic TaPt3 nanoparticles promote C–C bond cleavage in ethanol and exhibit much higher catalytic performance than traditional catalysts for the ethanol electrooxidation.

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Improved ethanol electrooxidation performance by shortening Pd–Ni active site distance in Pd–Ni–P nanocatalysts

Nature Communications ◽

10.1038/ncomms14136 ◽

2017 ◽

Vol 8 (1) ◽

Cited By ~ 184

Author(s):

Lin Chen ◽

Lilin Lu ◽

Hengli Zhu ◽

Yueguang Chen ◽

Yu Huang ◽

...

Keyword(s):

Noble Metal ◽

Active Sites ◽

Density Functional ◽

Density Functional Theory Calculations ◽

Catalytic Performance ◽

Atomic Ratio ◽

Oh Radicals ◽

Ethanol Electrooxidation ◽

Shape Transformation ◽

Functional Theory

Abstract Incorporating oxophilic metals into noble metal-based catalysts represents an emerging strategy to improve the catalytic performance of electrocatalysts in fuel cells. However, effects of the distance between the noble metal and oxophilic metal active sites on the catalytic performance have rarely been investigated. Herein, we report on ultrasmall (∼5 nm) Pd–Ni–P ternary nanoparticles for ethanol electrooxidation. The activity is improved up to 4.95 A per mgPd, which is 6.88 times higher than commercial Pd/C (0.72 A per mgPd), by shortening the distance between Pd and Ni active sites, achieved through shape transformation from Pd/Ni–P heterodimers into Pd–Ni–P nanoparticles and tuning the Ni/Pd atomic ratio to 1:1. Density functional theory calculations reveal that the improved activity and stability stems from the promoted production of free OH radicals (on Ni active sites) which facilitate the oxidative removal of carbonaceous poison and combination with CH3CO radicals on adjacent Pd active sites.

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High catalytic performance of raspberry-like gold nanoparticles and enhancement of stability by silica coating

RSC Advances ◽

10.1039/c5ra00650c ◽

2015 ◽

Vol 5 (24) ◽

pp. 18977-18982 ◽

Cited By ~ 8

Author(s):

Hien Duy Mai ◽

Kiouk Seo ◽

Soon Choi ◽

Hyojong Yoo

Keyword(s):

Gold Nanoparticles ◽

Silica Coating ◽

Catalytic Performance ◽

Ethanol Electrooxidation ◽

Catalytic Activities ◽

The Stability

Raspberry-like gold nanoparticles (Au RLNPs) show high catalytic activities in the reduction of 4-nitrophenol and ethanol electrooxidation. To improve the stability and applicability of Au RLNPs, silica-coated Au RLNPs were successfully synthesized.

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AEM analysis of crystallization in Ti-based amorphous alloys

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100075142 ◽

1983 ◽

Vol 41 ◽

pp. 270-271

Author(s):

A.R. Pelton ◽

A.F. Marshall ◽

Y.S. Lee

Keyword(s):

Magnetic Properties ◽

Amorphous Alloys ◽

Amorphous Materials ◽

Isothermal Annealing ◽

Amorphous Matrix ◽

Nucleation And Growth ◽

Current Interest ◽

Amorphous Films ◽

Electrical And Magnetic Properties

Amorphous materials are of current interest due to their desirable mechanical, electrical and magnetic properties. Furthermore, crystallizing amorphous alloys provides an avenue for discerning sequential and competitive phases thus allowing access to otherwise inaccessible crystalline structures. Previous studies have shown the benefits of using AEM to determine crystal structures and compositions of partially crystallized alloys. The present paper will discuss the AEM characterization of crystallized Cu-Ti and Ni-Ti amorphous films.Cu60Ti40: The amorphous alloy Cu60Ti40, when continuously heated, forms a simple intermediate, macrocrystalline phase which then transforms to the ordered, equilibrium Cu3Ti2 phase. However, contrary to what one would expect from kinetic considerations, isothermal annealing below the isochronal crystallization temperature results in direct nucleation and growth of Cu3Ti2 from the amorphous matrix.

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