Mesoporous metallic rhodium nanoparticles

Nature Communications
Bo JiangYusuke Yamauchi

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 O2.

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Citations

Aug 29, 2018·Chemical Communications : Chem Comm·Daisuke BabaToru Asahi
Jan 3, 2019·Journal of Environmental Science and Health. Part C, Environmental Carcinogenesis & Ecotoxicology Reviews·Gao-Juan CaoRong-Guang Lin
Mar 6, 2019·ChemSusChem·Juan BaiYu Chen
Apr 11, 2019·Chemical Communications : Chem Comm·Jiawei ZhangLansun Zheng
Jun 28, 2019·Chemistry, an Asian Journal·Abdillah Sani Bin Mohd NajibHideki Abe
Jan 16, 2020·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Manoranjan BeraN D Pradeep Singh
Feb 13, 2020·Artificial Cells, Nanomedicine, and Biotechnology·Caroline Measso do BonfimPaula Rahal
Jun 23, 2020·Advanced Materials·Liliang HuangChad A Mirkin
Jul 23, 2020·Chemical Communications : Chem Comm·Hao LvBen Liu
Sep 24, 2020·Advanced Materials·Yuxing YanYusuke Yamauchi
May 24, 2019·Nanoscale·Kenya KaniYusuke Yamauchi
Aug 2, 2019·Chemical Science·Hao LvBen Liu
Nov 23, 2019·Chemical Communications : Chem Comm·Yinghao LiHongjing Wang
May 1, 2018·Macromolecular Rapid Communications·Jianming ZhaoJingdong Zhang
Dec 10, 2020·Nanomaterials·Sergey SyubaevAleksandr Kuchmizhak
Aug 22, 2018·Journal of the American Chemical Society·Bo JiangYusuke Yamauchi
Jul 24, 2018·ACS Applied Materials & Interfaces·Hamidreza ArandiyanYusuke Yamauchi

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Methods Mentioned

BETA
scanning
transmission electron microscopy
electron diffraction
X-ray
SANS
thermal treatment

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