RT Journal Article
T1 Improved Oxidase Mimetic Activity by Praseodymium Incorporation into Ceria Nanocubes
A1 Jiang, Lei
A1 Fernández García, Susana
A1 Tinoco Rivas, Miguel
A1 Yan, Zhaoxia
A1 Yue, Qi
A1 Blanco, Ginesa
A1 Calvino, José Juan
A1 Hungría, Ana Belén
A1 Chen, Xiaowei
AB Ceria nanocubes (NC) modified with increasing concentrations of praseodymium (5, 10, 15, and 20 mol %) have been successfully synthesized by a hydrothermal method. The as-synthesized Pr-modified ceria nanocubes exhibit an enhanced oxidase-like activity on the organic dye TMB within a wide range of concentrations and durations. The oxidase activity increases with increasing Pr amounts in Pr-modified ceria nanocubes within the investigated concentration range. Meanwhile, these Pr-modified ceria nanocubes also show higher reducibility than pure ceria nanocubes. The kinetics of their oxidase mimetic activity is fitted with the Michaelis–Menten equation. A mechanism has been proposed on how the Pr incorporation could affect the energy level of the bands in ceria and hence facilitate the TMB oxidation reaction. The presence of Pr3+ species on the surface also contributes to the increasing activity of the Pr-modified ceria nanocubes present higher oxidase activity than pure ceria nanocubes.
SN 1944-8244
YR 2017
FD 2017
LK https://hdl.handle.net/20.500.14352/94697
UL https://hdl.handle.net/20.500.14352/94697
LA eng
NO Lei Jiang, Susana Fernandez-Garcia, Miguel Tinoco, Zhaoxia Yan, Qi Xue, Ginesa Blanco, Jose J. Calvino, Ana B. Hungria, and Xiaowei ChenACS Applied Materials & Interfaces 2017 9 (22), 18595-18608DOI: 10.1021/acsami.7b05036
NO National Natural Science Foundation of China
NO Science and Technology Development Project of Shandong Province (China)
NO European Commission
NO Ministerio de Ciencia e Innovación (España)
DS Docta Complutense
RD 5 abr 2025