Mesoporous metallic rhodium nanoparticles
Copyright policy )Mesoporous metallic rhodium nanoparticles
AbstractMesoporous 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.
- University of Queensland Australia
- Bilkent University Turkey
- University of Queensland Australia
- Australian Nuclear Science and Technology Organisation Australia
- Waseda University Japan
Poly(methyl methacrylate), synthesis, Reduction (chemistry), reduction (chemistry), Surface area, Metal Nanoparticles, Organic chemistry, Synthesis, Nanoparticle, Engineering, Rrhodium, Noble metal, Physical Sciences and Mathematics, Materials Chemistry, Mesoporous material, Nanotechnology, 3100 Physics and Astronomy, Chemical analysis, concentration (composition), Energy, Metal, nanoparticle, Q, Porous medium, porous medium, 1600 Chemistry, Chemistry, Physical Sciences, Metallurgy, Mesoporous silica, crystal structure, 1300 Biochemistry, oxidation, Science, Materials Science, reduction, Genetics and Molecular Biology, Article, Catalysis, Chemical engineering, nitric oxide, FOS: Chemical sciences, Oxidation, controlled study, Rhodium, FOS: Chemical engineering, Ethylene glycol, methanol, Reduction, FOS: Nanotechnology, catalysis, concentration (parameters), Renewable Energy, Sustainability and the Environment, Methanol, Crystal structure, Synthesis and processing, Organic Chemistry, Oxide, Nitric oxide, surface area, Catalytic Reduction of Nitro Compounds, poly(methyl methacrylate), Concentration (composition), thermostability, Materials science, Oxygen, Catalytic Nanomaterials, Macrogol, chemical analysis, macrogol, rhodium, Concentration (parameters), Electrocatalysis for Energy Conversion, Nanoparticles, Catalyst, Thermostability, Electrocatalysis, oxygen, Controlled study, catalyst
Poly(methyl methacrylate), synthesis, Reduction (chemistry), reduction (chemistry), Surface area, Metal Nanoparticles, Organic chemistry, Synthesis, Nanoparticle, Engineering, Rrhodium, Noble metal, Physical Sciences and Mathematics, Materials Chemistry, Mesoporous material, Nanotechnology, 3100 Physics and Astronomy, Chemical analysis, concentration (composition), Energy, Metal, nanoparticle, Q, Porous medium, porous medium, 1600 Chemistry, Chemistry, Physical Sciences, Metallurgy, Mesoporous silica, crystal structure, 1300 Biochemistry, oxidation, Science, Materials Science, reduction, Genetics and Molecular Biology, Article, Catalysis, Chemical engineering, nitric oxide, FOS: Chemical sciences, Oxidation, controlled study, Rhodium, FOS: Chemical engineering, Ethylene glycol, methanol, Reduction, FOS: Nanotechnology, catalysis, concentration (parameters), Renewable Energy, Sustainability and the Environment, Methanol, Crystal structure, Synthesis and processing, Organic Chemistry, Oxide, Nitric oxide, surface area, Catalytic Reduction of Nitro Compounds, poly(methyl methacrylate), Concentration (composition), thermostability, Materials science, Oxygen, Catalytic Nanomaterials, Macrogol, chemical analysis, macrogol, rhodium, Concentration (parameters), Electrocatalysis for Energy Conversion, Nanoparticles, Catalyst, Thermostability, Electrocatalysis, oxygen, Controlled study, catalyst
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