TY - JOUR
T1 - Highly Stable and Active Solid-Solution-Alloy Three-Way Catalyst by Utilizing Configurational-Entropy Effect
AU - Kusada, Kohei
AU - Wu, Dongshuang
AU - Nanba, Yusuke
AU - Koyama, Michihisa
AU - Yamamoto, Tomokazu
AU - Tran, Xuan Quy
AU - Toriyama, Takaaki
AU - Matsumura, Syo
AU - Ito, Ayano
AU - Sato, Katsutoshi
AU - Nagaoka, Katsutoshi
AU - Seo, Okkyun
AU - Song, Chulho
AU - Chen, Yanna
AU - Palina, Natalia
AU - Kumara, Loku Singgappulige Rosantha
AU - Hiroi, Satoshi
AU - Sakata, Osami
AU - Kawaguchi, Shogo
AU - Kubota, Yoshiki
AU - Kitagawa, Hiroshi
N1 - Funding Information:
The authors acknowledge the support from the JST ACCEL program Grant No. JPMJAC1501 and the MEXT KAKENHI Grant-in-Aid for Young Scientists No. 18K14073. STEM observations were performed as part of a program conducted by the Advanced Characterization Nanotechnology Platform sponsored by the Ministry of Education, Culture, Sports, Science and Technology (MEXT) of the Japanese government. Synchrotron XRD measurements were performed at SPring-8 under proposal No. 2018B1480. The HAXPES measurements were performed at SPring-8 under proposal Nos. 2018A4911 and 2020A4905. The authors thank M. Murase and M. Shimizu (Kyoto University) for assistance with the experimental support.
Publisher Copyright:
© 2021 Wiley-VCH GmbH
PY - 2021/4/22
Y1 - 2021/4/22
N2 - Since 1970, people have been making every endeavor to reduce toxic emissions from automobiles. After the development of a three-way catalyst (TWC) that concurrently converts three harmful gases, carbon monoxide (CO), hydrocarbons (HCs), and nitrogen oxides (NOx), Rh became an essential element in automobile technology because only Rh works efficiently for catalytic NOx reduction. However, due to the sharp price spike in 2007, numerous efforts have been made to replace Rh in TWCs. Nevertheless, Rh remains irreplaceable, and now, the price of Rh is increasing significantly again. Here, it is demonstrated that PdRuM ternary solid-solution alloy nanoparticles (NPs) exhibit highly durable and active TWC performance, which will result in a significant reduction in catalyst cost compared to Rh. This work provides insights into the design of highly durable and efficient functional alloy NPs, guiding how to best take advantage of the configurational entropy in addition to the mixing enthalpy.
AB - Since 1970, people have been making every endeavor to reduce toxic emissions from automobiles. After the development of a three-way catalyst (TWC) that concurrently converts three harmful gases, carbon monoxide (CO), hydrocarbons (HCs), and nitrogen oxides (NOx), Rh became an essential element in automobile technology because only Rh works efficiently for catalytic NOx reduction. However, due to the sharp price spike in 2007, numerous efforts have been made to replace Rh in TWCs. Nevertheless, Rh remains irreplaceable, and now, the price of Rh is increasing significantly again. Here, it is demonstrated that PdRuM ternary solid-solution alloy nanoparticles (NPs) exhibit highly durable and active TWC performance, which will result in a significant reduction in catalyst cost compared to Rh. This work provides insights into the design of highly durable and efficient functional alloy NPs, guiding how to best take advantage of the configurational entropy in addition to the mixing enthalpy.
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U2 - 10.1002/adma.202005206
DO - 10.1002/adma.202005206
M3 - Article
C2 - 33751709
AN - SCOPUS:85102291648
VL - 33
JO - Advanced Materials
JF - Advanced Materials
SN - 0935-9648
IS - 16
M1 - 2005206
ER -