N2O-emission-free exhaust remediation by Rh-NbOx nanocomposites developed from Rh3Nb alloy precursor

Tsubasa Imai; Shigenori Ueda; Satoshi Nagao; Hirohito Hirata; Koolath Ramakrishnan Deepthi; Hideki Abe

doi:10.1039/C6RA27168E

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N₂O-emission-free exhaust remediation by Rh-NbO_x nanocomposites developed from Rh₃Nb alloy precursor†

Tsubasa Imai,^ab Shigenori Ueda,^c Satoshi Nagao,^d Hirohito Hirata,^d Koolath Ramakrishnan Deepthi^e and Hideki Abe

*^a

Author affiliations

* Corresponding authors

^a National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan

^b Graduate School of Science and Technology, Saitama University, 255 Shimo-Okubo, Saitama 338-8570, Japan

^c Synchrotron X-ray Station at SPring-8, National Institute for Materials Science, 1-1-1 Kouto, Sayo, Hyogo, Japan

^d Toyota Motor Corporation, Mishuku 1200, Susono, Shizuoka 410-1107, Japan

^e Crystal Growth Centre, Anna University, Chennai, Tamil Nadu 600-025, India

Abstract

Metal-oxide nanocomposites comprising rhodium (Rh) nanoparticles (<50 nm) and oxygen-deficient niobium oxides (NbO_x: x < 5/2) were developed from Rh₃Nb alloy precursors. The Rh-NbO_x nanocomposite exhibited enhanced activity toward the catalytic remediation of nitrogen oxide (NO) in the presence of carbon monoxide (CO) without emissions of nitrous oxide (N₂O) due to the promoted dissociation of NO admolecules at the Rh/NbO_x interface.

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Article information

DOI: https://doi.org/10.1039/C6RA27168E
Article type: Paper
Submitted: 22 Nov 2016
Accepted: 13 Jan 2017
First published: 01 Feb 2017
This article is Open Access

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RSC Adv., 2017,7, 9628-9631

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N₂O-emission-free exhaust remediation by Rh-NbO_x nanocomposites developed from Rh₃Nb alloy precursor

T. Imai, S. Ueda, S. Nagao, H. Hirata, K. R. Deepthi and H. Abe, RSC Adv., 2017, 7, 9628 DOI: 10.1039/C6RA27168E

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