Room-temperature synthesis of nanoceria for degradation of organophosphate pesticides and its regeneration and reuse

Tolasz, Jakub; Henych, Jiří; Šťastný, Martin; Němečková, Zuzana; Slušná, Michaela; Opletal, Tomáš; Janoš, Pavel

doi:10.1039/d0ra00937g

Cited by 19 publications

(13 citation statements)

References 31 publications

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“…The average crystallite size calculated with Scherer equation was found as between 2 and 15 nm. 85 3.7 X-ray photoelectron spectroscopy X-ray photoelectron spectroscopy (XPS) is a non-destructive technique to investigate chemical and electronic structure of materials, and to characterize surface elemental composition. An important advantage of XPS is its ability to identify binding energies of the chemical shis of elements, e.g., the shis associated with the oxidation state of cerium in nanoceria.…”

Section: X-ray Diffractionmentioning

confidence: 99%

Synthesis and characterization of nanoceria for electrochemical sensing applications

et al. 2021

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Section: X-ray Diffractionmentioning

confidence: 99%

Synthesis and characterization of nanoceria for electrochemical sensing applications

et al. 2021

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“…The remaining agglomerates were removed by centrifugation at 3000 rpm for 30 min. The final size of the NPs was 12 nm 38 . The concentration of CeOx NPs in the colloid solution was 10 mg/mL.…”

Section: Materials and Technologymentioning

confidence: 99%

Plasma‐enhanced immobilization of cerium oxide nanoparticles on a fluorocarbon‐based nanofibrous membranes

Kormunda

Ryšánek

Homola

et al. 2023

J of Applied Polymer Sci

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Fluorocarbon‐based (CF) nanofibrous membrane has been prepared by electrospinning of a source polyvinylidene fluoride and its surface was modified by CeOx nanoparticles by immersion in a water colloidal solution with CeOx nanoparticles (CeOx NPs). Two ways of the deposition of CeOx nanoparticles on the CF nanofiber membrane were used: (1) deposition of CeOx NPs on the pristine electrospun membrane and (2) the immediate deposition CeOx NPs on the plasma treated electrospun membrane. We investigated the effect of plasma treatment on the amount of CeOx NPs deposited on CF nanofiber surfaces and on the Ce3+/Ce4+ ratio in CeOx NPs deposited on CF. The amount of CeOx on nanofiber surfaces was determined by XPS (X‐ray photoelectron spectroscopy) and SEM analysis. Results showed a significant increase of CeOx NPs amount on the plasma treated CF membrane, accompanied by slight decrease of Ce3+/Ce4+ ratio in CeOx NPs adherent on plasma treated CF surface in comparison with pristine CF surface. Detailed analysis of XPS spectra – C1s, O1s, and Ce3d indicated a possibility of the chemical bonding of CeOx NPs on the plasma treated CF surface.

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“…A significant part of the surface catalytic reaction and/or chemoselectivity of CeO 2 NMs is determined by their morphology, which presents different spatial dimensions, morphologies, OV concentrations, crystallinities, and specific surface areas . At present, the common synthesis of CeO 2 NMs mainly includes traditional synthesis methods (e.g., hydrothermal methods, ,− precipitation, ,,, thermal decomposition, spray pyrolysis, sol–gel methods, , and green synthesis , ). Green synthesis is a synthesis method mediated by plant extracts (e.g., Jatropha curcas extract and Rhus punjabensis).…”

Section: Synthesis Of Ceo2 Nmsmentioning

confidence: 99%

Nanoceria-Based Artificial Nanozymes: Review of Materials and Applications

Xiao

Zhao

et al. 2022

ACS Appl. Nano Mater.

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Nanozymes are nanomaterial-based enzyme mimics that have dominated recent research because of their remarkable catalytic activity, stability, and low cost. Among them, CeO2 nanomaterials (CeO2 NMs) possess distinct physicochemical properties and inherent catalytic properties mimicking oxidase (OXD), peroxidase (POD), catalase (CAT), superoxide dismutase (SOD), phosphatase, nuclease, and photolyases. The surface valence state, Ce4+/Ce3+ conversion, and oxygen vacancies (OVs) on the surface of CeO2 NMs are closely associated with enzyme-like activities. Surface modification (ions, small molecules, and macromolecular capping) can strongly promote or inhibit their catalytic activities. CeO2 NMs have emerged as attractive materials for biochemical applications including biocatalytic conversion, pollutant destruction, antimicrobial therapies, biosensors, and disease therapies. We summarize here the development history, catalytic mechanisms, and surface modification methods of CeO2 mimetic enzymes and the exploration of their applications as alternatives to natural enzymes in biochemical fields. Further, we outline potential challenges and prospects and hope to provide better guidance for the design and application of these promising artificial enzymes.

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Room-temperature synthesis of nanoceria for degradation of organophosphate pesticides and its regeneration and reuse

Abstract: Nanoceria prepared under ambient conditions has excellent ability to decompose methyl parathion and can be regenerated by simply washing with water.

Cited by 19 publications

References 31 publications

Synthesis and characterization of nanoceria for electrochemical sensing applications

Synthesis and characterization of nanoceria for electrochemical sensing applications

Plasma‐enhanced immobilization of cerium oxide nanoparticles on a fluorocarbon‐based nanofibrous membranes

Nanoceria-Based Artificial Nanozymes: Review of Materials and Applications

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