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Synthesis of Non-uniformly Pr-doped SrTiO3 Ceramics and Their Thermoelectric Properties
Published on: August 15, 2015
High-entropy strategies afford transition metal perovskite oxides with enhanced low-temperature NO removal efficiency
Xuan Zhang1,2, Dequan Jiang1, Shenghui Han1
1State Key Laboratory of Advanced Waterproof Materials, School of Materials Science and Engineering, Peking University, Beijing, 100871, P. R. China. gaosong198600@pku.edu.cn.
Abstract:
"High-entropy exclusion" and "elementary substitution" strategies are developed to afford high-entropy perovskites (HEPs) for NH3-SCR reaction at low-temperature. Among the six metals (Mn, Fe, Co, Ni, Cr, Al), HEP-no-Al exhibits the highest catalytic activity. It was found that the rich valence states of the elements at the B-site played a crucial role in enhancing the catalytic performance. Cr at the B-site was substituted with Mo and W, and B-site substitution by Mo further improves the NO removal efficiency to 100% at 180 °C.
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