RT Journal Article
T1 Enhanced Artificial Enzyme Activities on the Reconstructed Sawtoothlike Nanofacets of Pure and Pr-Doped Ceria Nanocubes
A1 Jiang, Lei
A1 Tinoco Rivas, Miguel
A1 Fernández García, Susana
A1 Sun, Yuijiao
A1 Traviankina, Mariia
A1 Nan, Pengli
A1 Xue, Qi
A1 Pan, Huiyan
A1 Aguinaco, Almudena
A1 González, Juan María
A1 Blanco, Ginesa
A1 Blanco, Eduardo
A1 Hungría, Ana Belén
A1 Calvino, José Juan
A1 Chen, Xiaowei
AB In this work, a simple one-step thermal oxidation process was established to achieve a significant surface increase in {110} and {111} nanofacets on well-defined, pure and Pr-doped, ceria nanocubes. More importantly, without changing most of the bulk properties, this treatment leads to a remarkable boost of their enzymatic activities: from the oxidant (oxidase-like) to antioxidant (hydroxyl radical scavenging) as well as the paraoxon degradation (phosphatase-like) activities. Such performance improvement might be due to the thermally generated sawtoothlike {111} nanofacets and defects, which facilitate the oxygen mobility and the formation of oxygen vacancies on the surface. Finally, possible mechanisms of nanoceria as artificial enzymes have been proposed in this manuscript. Considering the potential application of ceria as artificial enzymes, this thermal treatment may enable the future design of highly efficient nanozymes without changing the bulk composition.
PB ACS Publications
SN 1944-8244
YR 2021
FD 2021
LK https://hdl.handle.net/20.500.14352/93148
UL https://hdl.handle.net/20.500.14352/93148
LA eng
NO Lei Jiang, Miguel Tinoco, Susana Fernández-García, Yujiao Sun, Mariia Traviankina, Pengli Nan, Qi Xue, Huiyan Pan, Almudena Aguinaco, Juan M. González-Leal, Ginesa Blanco, Eduardo Blanco, Ana B. Hungría, Jose J. Calvino, and Xiaowei Chen ACS Applied Materials & Interfaces 2021 13 (32), 38061-38073 DOI: 10.1021/acsami.1c09992
DS Docta Complutense
RD 10 abr 2025