One-step synthesis of AuPd alloy nanoparticles on graphene as a stable catalyst for ethanol electro-oxidation

Liu, Changhai; Cai, Xin-Lei; Wang, Jianshe; Liu, Jie; Riese, Adam; Chen, Zhidong; Sun, Xueliang; Wang, Sui‐Dong

doi:10.1016/j.ijhydene.2016.05.194

Cited by 52 publications

(27 citation statements)

References 42 publications

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“…Similarly, the Pd3d 3/2 spectrum can be fit with 339.6 eV (PdAu alloy), 340.4 eV (metallic Pd), 341.3 eV (PdO 1−x ), and 342.1 eV (PdO). A more pronounced peak of metallic Pd is consistent with lower concentration of Au in supported Pd-Au catalysts [51,52,54,55]. In this sample, roughly 11-14 at% of Pd is in PdAu alloy, 47-53 at% of Pd is metallic, and 42-33 at% is PdO/PdO 1−x .…”

Section: Reactionsupporting

confidence: 71%

“…The XPS results obtained for both samples of Pd-Au catalyst indicate the presence of metallic palladium and gold, PdAu alloy, and palladium oxide (Figures 8 and 9, data are shown with −1 eV charge correction). For the 5%Pd-5%Au/SiO 2 sample, the peak positions in Pd3d 5/2 spectrum can be best fit (with ±0.15 eV precision) at 334.5 eV (Pd-Au alloy), 335.4 eV (metallic Pd), 336.1 eV (PdO 1−x ), and 337.0 eV (PdO) [50][51][52][53][54][55]. On the other hand, the Pd3d 3/2 spectrum can be fit with 339.9 eV (PdAu alloy), 340.6 eV (metallic Pd), 341.3 eV (PdO 1−x ), and 342.2 eV (PdO) [53].…”

Section: Reactionmentioning

confidence: 98%

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Bimetallic Pd-Au/SiO2 Catalysts for Reduction of Furfural in Water

et al. 2020

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Catalytic systems based on bimetallic Pd-Au particles deposited on SiO2 were prepared by ultrasonically assisted water impregnation and used in the hydrogenation of furfural obtained by the acidic hydrolysis of waste biomass (brewery’s spent grain) in aqueous phase. Pd-Au/SiO2 catalysts containing 50 g of Pd and 2–100 g of Au per 1 kg of catalyst were characterized by high activity in the studied process and, depending on the Pd/Au ratio, selectivity to 2-methyloxolan-2-ol. The modification of 5%Pd/SiO2 by Au leads to the formation of dispersed Au-Pd solid solution phases, which was confirmed by XRD, XPS, ToF-SIMS, SEM-EDS, and H2-TPR techniques. The effect of dilution of surface palladium by gold atoms is probably crucial for modification of the reaction mechanism and formation of 2-methyloxolan-2-ol as the main product.

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Section: Reactionsupporting

confidence: 71%

Section: Reactionmentioning

confidence: 98%

Bimetallic Pd-Au/SiO2 Catalysts for Reduction of Furfural in Water

et al. 2020

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“…As another approach, Wang et al used a bimetallic alloy target instead of a fan shaped binary target to create alloy NPs via sputtering onto an IL [107][108][109]. They reported that Au/Pd alloy NPs produced by sputtering an Au/Pd alloy target onto [BMI][BF 4 ] containing multi-walled carbon nanotubes (CNTs) [107] and graphene [108]. They observed Au/Pd NPs of ca.…”

Section: Sputtering Using An Alloy Targetmentioning

confidence: 99%

“…Torimoto's group found that after immobilization of sputtered Au/Pd NPs on highly oriented pyrolytic graphite (HOPG) substrates, Au/Pd with an Au fraction of 0.61 is optimal for ethanol electrooxidation ( Figure 10(a-c)) [96]. Further, simultaneous sputtering and loading of binary alloy NP catalysts onto TiO 2 co-catalysts [103], graphene [108], CNTs [109,110] and amorphous carbon [115], which dispersed in liquid media, allowed for uniform hybridization of the active metal catalyst on the support and aided separation and purification to remove the liquid matrix. Among graphene coated Au/Pd alloy NPs formed via sputtering of AuPd alloy targets with different compositions [108], Wang et al found that Au/Pd NPs with an Au: Pd molar ratio of 1:3 exhibited superior catalytic activity and stability (500 cycle test) for ethanol electrooxidation compared with monometallic Pd/graphene or Au/Pd NPs with other compositions (Figure 10(d)).…”

Section: Applications Of Sputtered Multi-metallic Nps/ncsmentioning

confidence: 99%

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Sputtering onto a liquid: interesting physical preparation method for multi-metallic nanoparticles

Nguyen

Yonezawa

2018

Science and Technology of Advanced Materials

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The young history of sputtering onto a liquid features great achievements in the green production of various metal and metal oxide nanoparticles (NPs) and nanoclusters (NCs). Studies on how the sputtering parameters affect the properties of NPs and NCs have elucidated their formation mechanism and marked a crucial role of liquid matrix in the nucleation and growth of particles, controlling their various properties. Current research has been devoted to making alloy bi-and trimetallic NPs with a high level of control over the NP structure, composition, and size via well-designed target systems, sputtering steps, and liquid matrix materials. In this minireview, we discuss the recent advances in the use of various types of targets to prepare different bi-and trimetallic NPs. In single target sputtering, systems with alternative configurations of metals, alloy targets, monometallic targets in sequence, and a combination of sputtering and chemical reactions have been developed. On the other hand, a double head system was introduced to widen the range of controllable sputtering parameters yielding more versatility in particle composition and fine structure. The synergistic and tuneable properties exhibited by the multi-metallic components in small NPs and NCs for their use in catalysis and optical applications are discussed.

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Monodisperse CuPd alloy nanoparticles as efficient and reusable catalyst for the C (sp²)–H bond activation

Huang

Wang

et al. 2021

Applied Organom Chemis

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Metal‐catalyzed selective activation of C–H bonds is very important for the construction of a variety of biologically active molecules. Supported alloy nanoparticles are of great interest in various catalytic applications due to the synergistic effects between different metals. Here, well‐dispersed CuPd alloy nanoparticles supported on reduced graphene oxide (rGO) were synthesized and found to be highly efficient and recyclable catalyst for the chelation‐assisted C (sp2)–H bond activation. Aromatic ketones or esters were synthesized via the cross‐dehydrogenative coupling (CDC) reaction between 2‐arylpyridines and alcohols or acids. Moreover, the catalyst was recovered and used for five times without significantly losing activity.

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One-step synthesis of AuPd alloy nanoparticles on graphene as a stable catalyst for ethanol electro-oxidation

Cited by 52 publications

References 42 publications

Bimetallic Pd-Au/SiO2 Catalysts for Reduction of Furfural in Water

Bimetallic Pd-Au/SiO2 Catalysts for Reduction of Furfural in Water

Sputtering onto a liquid: interesting physical preparation method for multi-metallic nanoparticles

Monodisperse CuPd alloy nanoparticles as efficient and reusable catalyst for the C (sp²)–H bond activation

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One-step synthesis of AuPd alloy nanoparticles on graphene as a stable catalyst for ethanol electro-oxidation

Cited by 52 publications

References 42 publications

Bimetallic Pd-Au/SiO2 Catalysts for Reduction of Furfural in Water

Bimetallic Pd-Au/SiO2 Catalysts for Reduction of Furfural in Water

Sputtering onto a liquid: interesting physical preparation method for multi-metallic nanoparticles

Monodisperse CuPd alloy nanoparticles as efficient and reusable catalyst for the C (sp2)–H bond activation

Contact Info

Product

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Monodisperse CuPd alloy nanoparticles as efficient and reusable catalyst for the C (sp²)–H bond activation