Mesoporous Metallic Rhodium Nanoparticles

Overview

Journal Nat Commun

Specialty Biology

Date 2017 May 20

PMID 28524873

Citations 29

Authors

Bo Jiang

Cuiling Li

Omer Dag

Hideki Abe

Toshiaki Takei

Tsubasa Imai

Md Shahriar A Hossain

Md Tofazzal Islam

Kathleen Wood

Joel Henzie

Yusuke Yamauchi

Affiliations

Soon will be listed here.

Abstract

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 O.

Citing Articles

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