Synthesis routes of CeO2 nanoparticles dedicated to organophosphorus degradation: A benchmark

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F20%3A00346156" target="_blank" >RIV/68407700:21340/20:00346156 - isvavai.cz</a>

Alternative codes found

RIV/68378271:_____/20:00545139

Result on the web

<a href="https://doi.org/10.1039/c9ce01898k" target="_blank" >https://doi.org/10.1039/c9ce01898k</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/c9ce01898k" target="_blank" >10.1039/c9ce01898k</a>

Result language

angličtina

Original language name

Synthesis routes of CeO2 nanoparticles dedicated to organophosphorus degradation: A benchmark

Original language description

Exposure to organophosphorus compounds, in military conflicts or terrorist acts, requires an emergency procedure including the availability of efficient decontamination systems. Systems based on nanosized cerium(iv) oxide (CeO2) are highly promising candidates. CeO2 is a heterogeneous catalyst for the degradation of the organophosphorus compounds such as VX agent or sarin. While the synthesis method influences the physicochemical characteristics of the nanoparticle surface and thus their degradation activity, we have compared the degradation activity of nanosized CeO2 powders commercially available, or developed using different synthesis processes, namely hydrothermal process, photochemistry and laser ablation in liquids. The degradation activity was evaluated in vitro by measuring the degradation kinetics of paraoxon organophosphate. A quenching of the degradation activity is observed on the as-produced particles with a surface pollution, especially when organic molecules with carboxylate ion R-COO- are involved in the synthesis process. In contrast, laser-generated nanoparticles in ultra-pure water show the best activity, while the sample presents the lowest specific surface area. After annealing, almost all samples present a clean surface and the degradation activity is mainly driven by the specific surface area. We propose a figure of merit including the particle activity for the degradation of paraoxon, the production costs and the production time. Indeed, the two last parameters are essential to assess the relevance of each method in view of marketing.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10402 - Inorganic and nuclear chemistry

Project

<a href="/en/project/FV30139" target="_blank" >FV30139: Research and development of technological methods for radiation-induced production of advanced nanomaterials</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2020

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

CrystEngComm

ISSN

1466-8033

e-ISSN

1466-8033

Volume of the periodical

22

Issue of the periodical within the volume

10

Country of publishing house

GB - UNITED KINGDOM

Number of pages

13

Pages from-to

1725-1737

UT code for WoS article

000526765700005

EID of the result in the Scopus database

2-s2.0-85081574578