RT journal article
T1 Multi-functional oxidase-like activity of praseodymia nanorods and nanoparticles
A1 Lei, Jiang
A1 Han, Yaning
A1 Fernández García, Susana
A1 Tinoco Rivas, Miguel
A1 Li, Zhuang
A1 Nan, Pengli
A1 Sun, Jingtao
A1 Delgado Jaén, Juan José
A1 Pan, Huiyan
A1 Blanco Montilla, Ginesa
A1 Martínez López, Francisco Javier
A1 Hungría Hernández, Ana Belén
A1 Calvino Gámez, José Juan
A1 Chen, Xiaowei
A2 Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica
K1 Praseodymia
K1 Nanorods
K1 Nanoparticles
K1 Artificial enzyme Oxidase
AB The ability to mimic protein-based oxidase with multi-functional inorganic nanozymes would greatly advancebiomedical and clinical practices. Praseodymia (PrOx) nanorods (NRs) and nanoparticles (NPs) have been synthesizedusing hydrothermal and precipitation methods. Both PrOx catalysts with different morphologies exhibitsignificantly higher oxidase-like activities (Michaelis-Menten constant Km ≤ 0.026 mM) than commercial PrOxand most so-far-reported artificial enzymes. One of the substrates, dopamine, can be oxidized and furtherpolymerized to generate polydopamine in acidic conditions. Akin to CeO2, which is a well-studied nanozyme, adifferent mechanism involving holes+, oxygen vacancies and oxygen mobility over PrOx catalysts has beenproposed in this work. However, fluoride ions were found to impose opposite effects on the oxidase-mimickingactivity of PrOx and CeO2, implying a promising path for the exploration of new nanozymes. In support of this,PrOx was further applied in colorimetric sensing of L-cysteine and fluoride with high sensitivity.
PB Elsevier
SN 0169-4332
YR 2023
FD 2023
LK http://hdl.handle.net/10498/30004
UL http://hdl.handle.net/10498/30004
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 21-sep-2026