Alloy-structure-dependent electronic behavior and surface properties of Au–Pd nanoparticles

Liu, Feng; Wechsler, Dominik; Zhang, Peng

doi:10.1016/j.cplett.2008.07.029

Cited by 125 publications

(153 citation statements)

References 24 publications

Supporting

Mentioning

136

Contrasting

Order By: Relevance

“…In particular, in the Au-Pd alloy nanoparticles an increased d-electron density at the Au sites was observed by XANES experiments, giving rise to a Au "white" line intensity decrease and decreasing Au 4f binding energies in x-ray photoelectron spectroscopy studies, evidencing the charge transfer from Pd to Au 5d orbitals. [40,41] The effect is higher when the number of Au Pd bonds increases.…”

Section: Introductionmentioning

confidence: 94%

Optical Absorption of Small Palladium‐Doped Gold Clusters

Kaydashev

Ferrari

Heard

et al. 2016

Part & Part Syst Charact

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 94%

Optical Absorption of Small Palladium‐Doped Gold Clusters

Kaydashev

Ferrari

Heard

et al. 2016

Part & Part Syst Charact

View full text Add to dashboard Cite

show abstract

“…The inhibition of Pd oxidation/dissolution definitely is one of the factors accounting for the improved stability of the Pt ML /Pd 9 Au 1 /C electrocatalyst, and likely is caused by the electronic effect of Au on Pd. Several researchers studied the electronic inference between two elements in the Pd-Au system [24][25][26] . Metallic Au has completely filled the d-orbitals, and thus does not exhibit an intense peak (the so-called white line) at the L3 edge, as indicated by the dotted blue curve from an Au foil in Fig.…”

Section: Structure Of Pt ML /Pdau/c Electrocatalystmentioning

confidence: 99%

Highly stable Pt monolayer on PdAu nanoparticle electrocatalysts for the oxygen reduction reaction

et al. 2012

View full text Add to dashboard Cite

stability is one of the main requirements for commercializing fuel cell electrocatalysts for automotive applications. Platinum is the best-known catalyst for oxygen reduction in cathodes, but it undergoes dissolution during potential changes while driving electric vehicles, thus hampering commercial adoption. Here we report a new class of highly stable, active electrocatalysts comprising platinum monolayers on palladium-gold alloy nanoparticles. In fuel-cell tests, this electrocatalyst with its ultra-low platinum content showed minimal degradation in activity over 100,000 cycles between potentials 0.6 and 1.0 V. under more severe conditions with a potential range of 0.6-1.4 V, again we registered no marked losses in platinum and gold despite the dissolution of palladium. These data coupled with theoretical analyses demonstrated that adding a small amount of gold to palladium and forming highly uniform nanoparticle cores make the platinum monolayer electrocatalyst significantly tolerant and very promising for the automotive application of fuel cells.

show abstract

“…Compared with the monometallic Pt NPs that have a similar size, the conversion was dramatically increased over the bimetallic AuPt alloy NPs, which maybe attributed to the electronic and geometric effect as reported in the literature. [51,52] The selectivity to unsaturated alcohols (G and N) was very low (4 %) over the monometallic Pt (NPs and nanorod aggregates). However, it increased up to 35 % over the bimetallic AuPt alloy, which is larger by a factor of eight relative to the monometallic Pt.…”

Section: Resultsmentioning

confidence: 99%

Colloidal Noble‐Metal and Bimetallic Alloy Nanocrystals: A General Synthetic Method and Their Catalytic Hydrogenation Properties

Song¹,

Liu²,

Feng³

et al. 2010

Chemistry A European J

View full text Add to dashboard Cite

A general single-step strategy has been developed for the direct thermal decomposition of noble-metal salts in octadecylamine to synthesize octahedron- and rod-shaped noble-metal aggregates and monodisperse noble-metal or bimetallic alloy nanocrystals without introducing any additive into the system. It has presented a facile and economic way to fabricate these nanocrystals, especially alloy nanocrystals, which does not require a post-synthesis solid-state annealing process. The morphology of the nanocrystals can be easily controlled by tuning the synthetic temperature. Their ability to catalyze heterogeneous Suzuki coupling reactions has been investigated and showed satisfactory catalytic activity. The catalytic performance of the monometallic and bimetallic alloy nanocrystals were also evaluated in the selective hydrogenation of citral in a conventional organic solvent (toluene) and a green solvent (supercritical carbon dioxide, scCO(2)). Interestingly, the catalysts performed differently to each other when they were in scCO(2) owing to the different morphology, which should be readily optimized for further use.

show abstract

Alloy-structure-dependent electronic behavior and surface properties of Au–Pd nanoparticles

Cited by 125 publications

References 24 publications

Optical Absorption of Small Palladium‐Doped Gold Clusters

Optical Absorption of Small Palladium‐Doped Gold Clusters

Highly stable Pt monolayer on PdAu nanoparticle electrocatalysts for the oxygen reduction reaction

Colloidal Noble‐Metal and Bimetallic Alloy Nanocrystals: A General Synthetic Method and Their Catalytic Hydrogenation Properties

Contact Info

Product

Resources

About