TY - JOUR
T1 - A Synthetic Pseudo-Rh
T2 - NO x Reduction Activity and Electronic Structure of Pd-Ru Solid-solution Alloy Nanoparticles
AU - Sato, Katsutoshi
AU - Tomonaga, Hiroyuki
AU - Yamamoto, Tomokazu
AU - Matsumura, Syo
AU - Zulkifli, Nor Diana Binti
AU - Ishimoto, Takayoshi
AU - Koyama, Michihisa
AU - Kusada, Kohei
AU - Kobayashi, Hirokazu
AU - Kitagawa, Hiroshi
AU - Nagaoka, Katsutoshi
PY - 2016/6/24
Y1 - 2016/6/24
N2 - Rh is one of the most important noble metals for industrial applications. A major fraction of Rh is used as a catalyst for emission control in automotive catalytic converters because of its unparalleled activity toward NO x reduction. However, Rh is a rare and extremely expensive element; thus, the development of Rh alternative composed of abundant elements is desirable. Pd and Ru are located at the right and left of Rh in the periodic table, respectively, nevertheless this combination of elements is immiscible in the bulk state. Here, we report a Pd-Ru solid-solution-alloy nanoparticle (Pd x Ru 1-x NP) catalyst exhibiting better NO x reduction activity than Rh. Theoretical calculations show that the electronic structure of Pd 0.5 Ru 0.5 is similar to that of Rh, indicating that Pd 0.5 Ru 0.5 can be regarded as a pseudo-Rh. Pd 0.5 Ru 0.5 exhibits better activity than natural Rh, which implies promising applications not only for exhaust-gas cleaning but also for various chemical reactions.
AB - Rh is one of the most important noble metals for industrial applications. A major fraction of Rh is used as a catalyst for emission control in automotive catalytic converters because of its unparalleled activity toward NO x reduction. However, Rh is a rare and extremely expensive element; thus, the development of Rh alternative composed of abundant elements is desirable. Pd and Ru are located at the right and left of Rh in the periodic table, respectively, nevertheless this combination of elements is immiscible in the bulk state. Here, we report a Pd-Ru solid-solution-alloy nanoparticle (Pd x Ru 1-x NP) catalyst exhibiting better NO x reduction activity than Rh. Theoretical calculations show that the electronic structure of Pd 0.5 Ru 0.5 is similar to that of Rh, indicating that Pd 0.5 Ru 0.5 can be regarded as a pseudo-Rh. Pd 0.5 Ru 0.5 exhibits better activity than natural Rh, which implies promising applications not only for exhaust-gas cleaning but also for various chemical reactions.
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U2 - 10.1038/srep28265
DO - 10.1038/srep28265
M3 - Article
AN - SCOPUS:84976359264
SN - 2045-2322
VL - 6
JO - Scientific Reports
JF - Scientific Reports
M1 - 28265
ER -