An ordered one-step colorimetric sensor for the selective determination of catechol based on the polyacrylic acid-coated cerium oxide with laccase-like activity

Jiang, Xiaoyan; Wang, Min; Hou, Li; Lin, Tianran

doi:10.1039/d2nj04149a

Cited by 5 publications

(3 citation statements)

References 36 publications

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“…This approach was further enhanced, leading to the development of sol-gelderived CeO 2 -TiO 2 -SiO 2 humidity sensors with remarkable properties [238,239]. The introduction of CeO 2 nanoparticles into a polymer matrix is also employed for the development of advanced biosensors [240,241].…”

Section: Schematic Illustration Of Sensor Element Characteristicsmentioning

confidence: 99%

“…Another approach to enhance the sensing ability of CeO 2 -based materials involves modifying their lattices by doping with other elements [25, [240][241][242]. The zinc oxide (ZnO) modification by Ce is particularly attractive, as the treatment of ZnO/TiO 2 solgel-derived film at 400°C results in the formation of the simonkolleite phase, which possesses exceptional hygroscopicity [243].…”

Section: Schematic Illustration Of Sensor Element Characteristicsmentioning

confidence: 99%

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Innovative Applications of Cerium Oxide-Based Materials in Civil Engineering, Automation, and Energy Sectors

Kozhukharov,

Girginov,

Lilova

et al. 2024

Cerium - Chemistry, Technology, Geology, Soil Science and Economics

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Cerium oxide materials exhibit remarkable properties, positioning them as highly effective, environmentally friendly solutions across diverse applications. This chapter provides a comprehensive overview of fundamental concepts and technological methodologies related to cerium oxide (CeO2) and doped ceria-based materials. Emphasis is placed on electrochemical deposition, spray pyrolysis, and the sol-gel approach for synthesizing thin and thick layers of ceria. The versatility of these materials is explored, spanning from corrosion protection layers and specialized ceramic elements for sensor applications to components for solid oxide fuel cells (SOFCs) and electrodes for water-splitting cells. Additionally, the chapter delves into the promising applications of recently developed ceria-based nanomaterials in various fields, marking some advanced methods for CeO2-based materials synthesis. The key findings are succinctly summarized in the concluding section.

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Section: Schematic Illustration Of Sensor Element Characteristicsmentioning

confidence: 99%

Section: Schematic Illustration Of Sensor Element Characteristicsmentioning

confidence: 99%

Innovative Applications of Cerium Oxide-Based Materials in Civil Engineering, Automation, and Energy Sectors

Kozhukharov,

Girginov,

Lilova

et al. 2024

Cerium - Chemistry, Technology, Geology, Soil Science and Economics

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“…In comparison to metal oxides and metal–organic frameworks, , the oxide form of cerium (CeO 2 ) is a more attractive agent due to its applications in photocatalysis, water splitting, and catalytic conversion. − Cerium oxide (CeO 2 ) in the nanoscale range is applicable in many areas such as in the agriculture field for crop improvement and crop stress tolerance, and in the biomedical field as a theragnostic agent for cancer treatment, as a bioscaffold, and for drug and gene delivery . The occurrence of two ionic valencies (Ce 3+ /Ce 4+ ) on the active sites of nanoceria is responsible for the oxygen vacancy generation on the surface, which facilitates the phosphohydrolase activity of CeO 2 NPs. − Because of their ionic valency state, they behave as radical scavengers . Nanoceria exhibit pH-dependent variation of surface charges (negative, positive, or neutral) and other specific properties like homogenization, dispersion, and stabilization in aqueous solutions, which help in its application as oxidase, catalase, biomolecule adsorbent, sensors, , etc.…”

Section: Introductionmentioning

confidence: 99%

β-Cyclodextrin Stabilized Nanoceria for Hydrolytic Cleavage of Paraoxon in Aqueous and Cationic Micellar Media

Miri¹,

Karbhal

Satnami

et al. 2023

ACS Appl. Bio Mater.

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Beta-cyclodextrin (β-CD) stabilized cerium oxide nanoparticles (β-CD@CeO 2 NPs) were synthesized through a hydrothermal route. The electronic properties, surface functional group, surface composition, size, and morphologies of the as-synthesized β-CD@CeO 2 NPs were characterized using UV−visible spectroscopy, FTIR analysis, high resolution X-ray photoelectron spectroscopy (HRXPS), high resolution transmission electron microscopy (HRTEM), and field emission scanning electron microscopy (FESEM). The pH-dependent variation of the ζpotential of β-CD@CeO 2 NPs and the catalytic activity of the NPs for the hydrolysis of paraoxon were investigated. The observed pseudo-first-order rate constant (k obs ) for the hydrolysis of paraoxon is increased with increasing pH and the ζ-potential of β-CD@CeO 2 NPs. The kinetics and mechanism of hydrolysis of paraoxon in the aqueous and cationic micellar media have been discussed.

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Surface Chemistry of Biologically Active Reducible Oxide Nanozymes

et al. 2023

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Reducible metal oxide nanozymes (rNZs) have been a subject of intense recent interest due to their catalytic nature, ease of synthesis, and complex surface character. Such materials contain surface sites which facilitate enzyme‐mimetic reactions via substrate coordination and redox cycling. Further, these surface reactive sites have been shown to be highly sensitive to stresses within the nanomaterial lattice, the physicochemical environment, and to processing conditions occurring as part of their syntheses. When administered in vivo, a complex protein corona binds to the surface, redefining its biological identity and subsequent interactions within the biological system. Catalytic activities of rNZs each deliver a differing impact on protein corona formation, its composition, and in turn, their recognition, and internalization by host cells. Improving our understanding of the precise principles that dominate rNZ surface‐biomolecule adsorption raises the question of whether designer rNZs can be engineered to prevent corona formation, or indeed to produce “custom” protein coronas applied either in vitro, and pre‐administration, or formed immediately upon their exposure to body fluids. Here, we consider fundamental surface chemistry processes and their implications in rNZ material performance. In particular, we discuss material structures which inform component adsorption from the application environment, including substrates for enzyme‐mimetic reactions.This article is protected by copyright. All rights reserved

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An ordered one-step colorimetric sensor for the selective determination of catechol based on the polyacrylic acid-coated cerium oxide with laccase-like activity

Abstract: A sensitive colorimetric sensor was constructed for an ordered and one-step determination of catechol based on PAA-CeO2 with a significant laccase-like activity.

Cited by 5 publications

References 36 publications

Innovative Applications of Cerium Oxide-Based Materials in Civil Engineering, Automation, and Energy Sectors

Innovative Applications of Cerium Oxide-Based Materials in Civil Engineering, Automation, and Energy Sectors

β-Cyclodextrin Stabilized Nanoceria for Hydrolytic Cleavage of Paraoxon in Aqueous and Cationic Micellar Media

Surface Chemistry of Biologically Active Reducible Oxide Nanozymes

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