Dual-readout performance of Eu³⁺-doped nanoceria as a phosphatase mimic for degradation and detection of organophosphate

Abstract

Eu3+-doped nanoceria (Eu:CeO2) with self-integrated catalytic and luminescence sensing functions was synthesized by a simple and gentle one-pot method to build a dual-readout nanozyme platform for organophosphate compounds (OPC) sensing...

Exploring Various Photochemical Processes in Optical Sensing of Pesticides by Luminescent Nanomaterials: A Concise Discussion on Challenges and Recent Advancements

“…The next year, a Eu 3+ -doped nanoceria (Eu:CeO 2 ) was constructed by Xiao and his group using a straightforward, mild one-pot process to create a dual-readout nanoenzyme platform for recognition of organophosphate compounds (OPCs) . The compound possesses self-integrated catalytic and luminescence sensing capabilities.…”

“…The next year, a Eu 3+ -doped nanoceria (Eu:CeO 2 ) was constructed by Xiao and his group using a straightforward, mild one-pot process to create a dual-readout nanoenzyme platform for recognition of organophosphate compounds (OPCs). 88 The compound possesses self-integrated catalytic and luminescence sensing capabilities. The intense red emission of Eu 3+ (592 nm) in the compound quenched in the presence of p -nitrophenyl phosphate (p-NPP) due to the charge transfer, and the visual color change from colorless to yellow was detected.…”

Modulating Ce3+ Sites in Ce‐Zr Oxide Nanocatalysts through Protamine Biomineralization for Organophosphate Dephosphorylation

“…Ceria can exist in dual oxidation states as Ce 3+ and Ce 4+ , enabling the ability to accommodate a high density of oxygen vacancies (Vo), which enhances the catalytic activity for OPD due to the cooperative redox property of Ce 3+ and Ce 4+ [1,6,9,11] . The addition of metal dopants to ceria has shown to improve Vo concentration and associated catalytic activity for the decomposition of OPs [1,12–15] …”

“…[1,6,9,11] The addition of metal dopants to ceria has shown to improve Vo concentration and associated catalytic activity for the decomposition of OPs. [1,[12][13][14][15] Various approaches can be applied to synthesize oxide nanocatalysts to tune structure and thus catalytic properties; however, the majority of preparation methods exhibit common drawbacks, such as complicated synthetic procedures and/or energy intensive processes. [6,[16][17][18][19] To alleviate these concerns, benign biomineralization-based methods have received increased attention as a straightforward and efficient synthesis approach for metal oxide catalysts.…”

A novel colorimetric assay for sensitive detection of kanamycin based on the aptamer-regulated peroxidase-mimicking activity of Co3O4 nanoparticles

“…They are inexpensive and show excellent stability for long-term storage. 19 Numerous nanomaterials, including carbon nanomaterials, 20 noble-metal nanoparticles, 21 and transition-metal oxides, 22 have been shown to have nanozyme activity. Co 3 O 4 NPs have a typical structure of the AB 2 O 4 cubic spinel.…”