Ordered Porous Pd Octahedra Covered with Monolayer Ru Atoms

Ge, Jingjie; He, Dongsheng; Bai, Lei; You, Rui; Han, Lu; Lin, Yue; Tan, Chaoliang; Kang, Yan‐Biao; Xiao, B.L.; Wu, Yuen; Deng, Zhaoxiang; Huang, Weixin; Zhang, Hua; Hong, Xun; Li, Yadong

doi:10.1021/jacs.5b08956

Cited by 60 publications

(57 citation statements)

References 29 publications

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“…In a recent report, Li’s group [51] synthesized highly ordered porous Pd octahedrons covered with a Ru monolayer in one-pot reaction 51 . A combination of the hydrothermal method and a UPD process yielded the deposition of Ru {001} monolayer on the surface of Pd {111} facets.…”

Section: Phase-separated Nanoalloy: Heterostructure and Core-shell Stmentioning

confidence: 99%

Section: Phase-separated Nanoalloy: Heterostructure and Core-shell Stmentioning

confidence: 99%

“…(c) Conversion of methyl non-2-ynoate (R1 = C 6 H 13 , R2 = CO 2 Me) to (d) (Z)-methyl non-2-enoate (curves 1 and 2) and (E)-methyl non-2-enoate (curves 3 and 4) catalyzed by porous Pd octahedra covered with monolayer Ru atoms NPs and Pd NPs. (Reproduced with permission from [51] © 2015, American Chemical Society. )…”

Section: Phase-separated Nanoalloy: Heterostructure and Core-shell Stmentioning

confidence: 99%

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Recent progress in the structure control of Pd–Ru bimetallic nanomaterials

Kusada

Kitagawa

2016

Science and Technology of Advanced Materials

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Pd and Ru are two key elements of the platinum-group metals that are invaluable to areas such as catalysis and energy storage/transfer. To maximize the potential of the Pd and Ru elements, significant effort has been devoted to synthesizing Pd–Ru bimetallic materials. However, most of the reports dealing with this subject describe phase-separated structures such as near-surface alloys and physical mixtures of monometallic nanoparticles (NPs). Pd–Ru alloys with homogenous structure and arbitrary metallic ratio are highly desired for basic scientific research and commercial material design. In the past several years, with the development of nanoscience, Pd–Ru bimetallic alloys with different architectures including heterostructure, core-shell structure and solid-solution alloy were successfully synthesized. In particular, we have now reached the stage of being able to obtain Pd–Ru solid-solution alloy NPs over the whole composition range. These Pd–Ru bimetallic alloys are better catalysts than their parent metal NPs in many catalytic reactions, because the electronic structures of Pd and Ru are modified by alloying. In this review, we describe the recent development in the structure control of Pd–Ru bimetallic nanomaterials. Aiming for a better understanding of the synthesis strategies, some fundamental details including fabrication methods and formation mechanisms are discussed. We stress that the modification of electronic structure, originating from different nanoscale geometry and chemical composition, profoundly affects material properties. Finally, we discuss open issues in this field.

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Section: Phase-separated Nanoalloy: Heterostructure and Core-shell Stmentioning

confidence: 99%

Section: Phase-separated Nanoalloy: Heterostructure and Core-shell Stmentioning

confidence: 99%

Section: Phase-separated Nanoalloy: Heterostructure and Core-shell Stmentioning

confidence: 99%

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Recent progress in the structure control of Pd–Ru bimetallic nanomaterials

Kusada

Kitagawa

2016

Science and Technology of Advanced Materials

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“…Making mesoporous frameworks composed of carbon4567, metal oxides89, silica10111213, polymers141516 and metals171819 has led to enhanced performance in catalysis2021, energy conversion and storage2223, surface-enhanced Raman spectroscopy (SERS)2425 and chemical/biochemical sensing26. In particular, the application of mesoporous noble metals in the field of heterogeneous catalysis has distinct and numerous advantages in terms of performance.…”

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confidence: 99%

Mesoporous metallic rhodium nanoparticles

et al. 2017

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Mesoporous noble metals are an emerging class of cutting-edge nanostructured catalysts due to their abundant exposed active sites and highly accessible surfaces. Although various noble metal (e.g. Pt, Pd and Au) structures have been synthesized by hard- and soft-templating methods, mesoporous rhodium (Rh) nanoparticles have never been generated via chemical reduction, in part due to the relatively high surface energy of rhodium (Rh) metal. Here we describe a simple, scalable route to generate mesoporous Rh by chemical reduction on polymeric micelle templates [poly(ethylene oxide)-b-poly(methyl methacrylate) (PEO-b-PMMA)]. The mesoporous Rh nanoparticles exhibited a ∼2.6 times enhancement for the electrocatalytic oxidation of methanol compared to commercially available Rh catalyst. Surprisingly, the high surface area mesoporous structure of the Rh catalyst was thermally stable up to 400 °C. The combination of high surface area and thermal stability also enables superior catalytic activity for the remediation of nitric oxide (NO) in lean-burn exhaust containing high concentrations of O2.

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“…Simultaneous X-ray detection of four solid-state detectors in conjunction with a high brightness Schottky-type field emission gun can allow the element-specific mapping at subnanometer resolution across the periodic table with high sensitivity and high spectral count rates. Most recently, our group synthesized the monolayer Ru atoms covered highly ordered porous Pd octahedra via the UPD and thermodynamic control [108]. Shape evolution from concave nanocube to octahedron with six hollow cavities was observed due to the UPD of monolayer Ru.…”

Section: Underpotential Depositionmentioning

confidence: 99%

Understanding of the major reactions in solution synthesis of functional nanomaterials

Wang

2016

Sci. China Mater.

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This review covers the major reactions involved in the solution synthesis of nanomaterials. It was designed to classify the traditional strategies such as precipitation, reduction, seed growth, etching, and so on into two basic processes which are termed as bottom-up and top-down routines. The discussion is focused on the basic mechanism and principles during the nucleation and growth of nanocrystals, especially in the solution system. This review also presents a prediction for how to utilize these intrinsic processes to artificially construct the desired specific and functional nanostructures. We try to describe the most directive and effective way to control the structures of nanocrystals for researchers who can master the major reaction mechanism and grasp the basic technologies in synthetic nanoscience.

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Ordered Porous Pd Octahedra Covered with Monolayer Ru Atoms

Cited by 60 publications

References 29 publications

Recent progress in the structure control of Pd–Ru bimetallic nanomaterials

Recent progress in the structure control of Pd–Ru bimetallic nanomaterials

Mesoporous metallic rhodium nanoparticles

Understanding of the major reactions in solution synthesis of functional nanomaterials

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