Au–Pd alloying-promoted thermal decomposition of PdO supported on SiO2 and its effect on the catalytic performance in CO oxidation

Qian, Kun; Huang, Weixin

doi:10.1016/j.cattod.2010.10.018

Cited by 62 publications

(47 citation statements)

References 27 publications

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“…This may suggest that the alloy have been formed with characteristic bond energy differing from the AuNPs alone. Similar observations were found in literature, where the presence of Pd causes such a shift in the bond energy of Au in the alloy (Au-Pd/SiO 2 ) [32,33]. Fig.…”

Section: Xpssupporting

confidence: 86%

Electrocatalytic activity of bimetallic Au–Pd nanoparticles in the presence of cobalt tetraaminophthalocyanine

Maringa

Mashazi

Nyokong

2015

Journal of Colloid and Interface Science

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Section: Xpssupporting

confidence: 86%

Electrocatalytic activity of bimetallic Au–Pd nanoparticles in the presence of cobalt tetraaminophthalocyanine

Maringa

Mashazi

Nyokong

2015

Journal of Colloid and Interface Science

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“…Raman spectra of C/Ag/TiO 2 showed two bands around 1354 and 1594 cm −1 attributed to the distorted sp 2 carbon and well ordered graphite like structure on the TiO 2 surface. These results suggested that sp 2 hybrid orbitals of carbon interacts with orbitals of silver nanoparticles to increase the SPR effect of Ag and also enhances the light absorption ability of C/Ag/TiO 2 both under UV and visible light [130].…”

Section: Photocatalytic Activity Of Silver Deposited Titania (Ag/tio 2 )mentioning

confidence: 88%

A review on plasmonic metal⿿TiO2 composite for generation, trapping, storing and dynamic vectorial transfer of photogenerated electrons across the Schottky junction in a photocatalytic system

Devi

Kavitha

2016

Applied Surface Science

306

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“…As O 2 activation does not occur on pure Au, it is unsurprising that it is inactive for CO oxidation, a finding also reported by Huang and co-workers. 21 For TiO 2 -supported Au–Pd catalysts, Beck et al used a selection of preparation methods to achieve different nanostructured bimetallic catalysts. No significant synergy was observed in those catalysts, regardless of the preparation method, indicating that the presence of core–shell structures does not adversely or positively affect the catalytic activity for CO oxidation.…”

Section: Introductionmentioning

confidence: 99%

Synergy and Anti-Synergy between Palladium and Gold in Nanoparticles Dispersed on a Reducible Support

et al. 2016

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Highly active and stable bimetallic Au–Pd catalysts have been extensively studied for several liquid-phase oxidation reactions in recent years, but there are far fewer reports on the use of these catalysts for low-temperature gas-phase reactions. Here we initially established the presence of a synergistic effect in a range of bimetallic Au–Pd/CeZrO4 catalysts, by measuring their activity for selective oxidation of benzyl alcohol. The catalysts were then evaluated for low-temperature WGS, CO oxidation, and formic acid decomposition, all of which are believed to be mechanistically related. A strong anti-synergy between Au and Pd was observed for these reactions, whereby the introduction of Pd to a monometallic Au catalyst resulted in a significant decrease in catalytic activity. Furthermore, monometallic Pd was more active than Pd-rich bimetallic catalysts. The nature of the anti-synergy was probed by several ex situ techniques, which all indicated a growth in metal nanoparticle size with Pd addition. However, the most definitive information was provided by in situ CO-DRIFTS, in which CO adsorption associated with interfacial sites was found to vary with the molar ratio of the metals and could be correlated with the catalytic activity of each reaction. As a similar correlation was observed between activity and the presence of Au0* (as detected by XPS), it is proposed that peripheral Au0* species form part of the active centers in the most active catalysts for the three gas-phase reactions. In contrast, the active sites for the selective oxidation of benzyl alcohol are generally thought to be electronically modified gold atoms at the surface of the nanoparticles.

show abstract

Au–Pd alloying-promoted thermal decomposition of PdO supported on SiO2 and its effect on the catalytic performance in CO oxidation

Cited by 62 publications

References 27 publications

Electrocatalytic activity of bimetallic Au–Pd nanoparticles in the presence of cobalt tetraaminophthalocyanine

Electrocatalytic activity of bimetallic Au–Pd nanoparticles in the presence of cobalt tetraaminophthalocyanine

A review on plasmonic metal⿿TiO2 composite for generation, trapping, storing and dynamic vectorial transfer of photogenerated electrons across the Schottky junction in a photocatalytic system

Synergy and Anti-Synergy between Palladium and Gold in Nanoparticles Dispersed on a Reducible Support

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