A general strategy for the facile synthesis of AuM (M = Pt/Pd) alloyed flowerlike-assembly nanochains for enhanced oxygen reduction reaction

He, Linghao; Song, Pei; Wang, Ai‐Jun; Zheng, Jie-Ning; Mei, Li-Ping; Feng, Jiu‐Ju

doi:10.1039/c4ta06627h

Cited by 51 publications

(31 citation statements)

References 52 publications

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“…Figure 3(C) is the XPS spectra of Au 4f,t he two obvious peaks with BE at 84.0 and 87.7 eV belong to Au 0 , and the two wide peaks around 83.7 and87.4 eV are attributed to Au(+ 3). [39] Figure 3D demonstrates the XPS spectrum of Te 3d in Pt 20 Pd 20 Au 10 Te 50 NWs, whicha re split into two double peaks. The BE located at 572.7 and 583.1 eV are assigned to metal Te 0 ,a nd the other ones at 575.8 and 586.2 eV correspond to Te ( + 4).…”

Section: Resultsmentioning

confidence: 99%

Facile Synthesis Of Composition‐Controllable PtPdAuTe Nanowires As Superior Electrocatalysts For Direct Methanol Fuel Cells

Ren

Zhang

Liu

et al. 2019

Chemistry An Asian Journal

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Multicomponent Pt-based nanowires (NWs) have attracted widespread attentiona se letrocatalysts toward direct alcohol fuel cells because of their unique one-dimensional structure and high reactiond ynamics. Quaternary PtPdAuTeN Ws are designedv ia af acile template method, and NWs with ad ifferent composition are obtained by adjusting the feed ratio of metal precursors. The direct displacement reactiono fm etal precursors with Te NWsa nd the partial oxidation of Te lead to the formation of quaternary NWs. The rough surfacea nd abundant reactive sites deriving from the rearrangement of metal atoms on the Te NWs surface endow the PtPdAuTeN Ws with as uperior electrocatalytic propertya nd durability for methanol oxidation. The Pt 20 Pd 20 Au 10 Te 50 NWs display the largestm ass activity and best stabilitya mong all catalysts. The preparation of PtPdAuTeNWs could provideaviable strategy for the preparation of other multicomponent NWs.Supporting information and the ORCID identification number(s) for the author(s) of this article can be found under: https://doi.

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Section: Resultsmentioning

confidence: 99%

Facile Synthesis Of Composition‐Controllable PtPdAuTe Nanowires As Superior Electrocatalysts For Direct Methanol Fuel Cells

Ren

Zhang

Liu

et al. 2019

Chemistry An Asian Journal

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“…Note that the bimetallic alloys possess the so-named synergistic effects in the catalytic process; on one hand, the introduction of another metal can generate certain geometric configuration, which is called the ensemble effect, and on the other hand, the altered electronic structure induced by hetero te metal-metal bond is favorable for the activation of the catalyst [14,15]. A variety of Pd alloys, including PdAu [16][17][18], PdAg [19][20][21], PdRh [22], PdNi [23,24], PdCo [25,26], PdCu [27], and PdSn [28] have demonstrated higher ORR activities and enhanced long-term stabilities than the pure Pd-based catalysts.…”

Section: Introductionmentioning

confidence: 99%

Oxygen Reduction Reaction and Hydrogen Evolution Reaction Catalyzed by Pd–Ru Nanoparticles Encapsulated in Porous Carbon Nanosheets

Tian

Tang

et al. 2018

Catalysts

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Developing bi-functional electrocatalysts for both oxygen reduction reaction (ORR) and hydrogen evolution reaction (HER) is crucial for enhancing the energy transfer efficiency of metal-air batteries and fuel cells, as well as producing hydrogen with a high purity. Herein, a series of Pd-Ru alloyed nanoparticles encapsulated in porous carbon nanosheets (CNs) were synthesized and employed as a bifunctional electrocatalyst for both ORR and HER. The TEM measurements showed that Pd-Ru nanoparticles, with a size of approximately 1-5 nm, were uniformly dispersed on the carbon nanosheets. The crystal and electronic structures of the Pd x Ru 100−x /CNs series were revealed by powder X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The as-prepared samples exhibited effective ORR activity in alkaline media and excellent HER activity in both alkaline and acid solutions. The Pd 50 Ru 50 /CNs sample displayed the best activity and stability among the series, which is comparable and superior to that of commercial 10% Pd/C. For ORR, the Pd 50 Ru 50 /CNs catalyst exhibited an onset potential of 0.903 V vs. RHE (Reversible Hydrogen Electrode) and 11.4% decrease of the current density after 30,000 s of continuous operation in stability test. For HER, the Pd 50 Ru 50 /CNs catalyst displayed an overpotential of 37.3 mV and 45.1 mV at 10 mA cm −2 in 0.1 M KOH and 0.5 M H 2 SO 4 , respectively. The strategy for encapsulating bimetallic alloys within porous carbon materials is promising for fabricating sustainable energy toward electrocatalysts with multiple electrocatalytic activities for energy related applications.

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“…Recently, Feng et al developed a general strategy for the fabrication of alloyed AuPd flowerlike‐assembly nanochains, and the onset potential (+0.94 V) was comparable with that of Au 33 Pd 67 . However, the half‐wave potential (+0.81 V) was much lower than that of Au 33 Pd 67 (+0.84 V) . This comparison further shows that the peptide‐based approach has great potential in the fabrication of bimetallic NPs with enhanced electrocatalytic performances toward the ORR.…”

Section: Resultsmentioning

confidence: 86%

Peptide‐FlgA3‐Based Gold Palladium Bimetallic Nanoparticles That Catalyze the Oxygen Reduction Reaction in Alkaline Solution

Tang

Chen

et al. 2017

ChemCatChem

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Given the synergetic properties of different metal species, bimetallic nanoparticles are of immense scientific interest and technological importance in the field of catalysis. A peptide‐based method represents a new avenue to fabricate bimetallic nanocatalysts with a controllable size, shape, composition, and subtle surface microstructure. However, the electrocatalytic abilities of these peptide‐based bimetallic nanoparticles remain largely unexplored. Herein, we employed the peptide sequence FlgA3 to fabricate a series of AuPd alloys that were used as catalysts for the oxygen reduction reaction (ORR). Among the samples tested, Au33Pd67 exhibited the best activity, evidenced by the most positive onset potential and the largest diffusion‐limited current. Notably, the ORR activity of Au33Pd67 was comparable with that of commercial Pt/C, and the long‐term durability was significantly superior to that of Pt/C. A peptide‐enabled approach might pave the way for the fabrication of bimetallic nanomaterials with enhanced electrocatalytic properties under mild conditions.

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A general strategy for the facile synthesis of AuM (M = Pt/Pd) alloyed flowerlike-assembly nanochains for enhanced oxygen reduction reaction

Cited by 51 publications

References 52 publications

Facile Synthesis Of Composition‐Controllable PtPdAuTe Nanowires As Superior Electrocatalysts For Direct Methanol Fuel Cells

Facile Synthesis Of Composition‐Controllable PtPdAuTe Nanowires As Superior Electrocatalysts For Direct Methanol Fuel Cells

Oxygen Reduction Reaction and Hydrogen Evolution Reaction Catalyzed by Pd–Ru Nanoparticles Encapsulated in Porous Carbon Nanosheets

Peptide‐FlgA3‐Based Gold Palladium Bimetallic Nanoparticles That Catalyze the Oxygen Reduction Reaction in Alkaline Solution

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