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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F44555601%3A13520%2F20%3A43895443" target="_blank" >RIV/44555601:13520/20:43895443 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61388980:_____/20:00524279 RIV/61989592:15310/20:73604124

Výsledek na webu

<a href="https://pubs.rsc.org/en/Content/ArticleLanding/2020/RA/D0RA00937G#!divAbstract" target="_blank" >https://pubs.rsc.org/en/Content/ArticleLanding/2020/RA/D0RA00937G#!divAbstract</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d0ra00937g" target="_blank" >10.1039/d0ra00937g</a>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

A simple low-temperature water-based and one-pot synthesis was developed for the preparation of nanocrystalline CeO2 that was used for degradation of the toxic organophosphate pesticide parathion methyl. By changing the reaction temperature in the range from 5 oC to 95 oC, several properties (i.e., crystallinity, grain size and surface area) of nanoceria can be easily controlled. The catalytic decomposition of parathion methyl to its degradation product 4-nitrophenol was highly dependent on the CeO2 preparation temperature. It was demonstrated that at low temperature (i.e. 5 oC), CeO2 with very small crystallites (&lt;2 nm) and high surface area can be obtained. For practical use, it was demonstrated that highly crystalline CeO2 can be prepared at room-temperature (30 oC) in at least 100 g batches. It was shown that precipitated nanoceria had high thermal stability and its post-synthesis annealing up to 400 oC did not significantly alter the material properties and hence the catalytic activity. Furthermore, as shown by the reusability tests, the sorbent can be reactivated by simply washing with water which demonstrated its durability.

Název v anglickém jazyce

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

Popis výsledku anglicky

A simple low-temperature water-based and one-pot synthesis was developed for the preparation of nanocrystalline CeO2 that was used for degradation of the toxic organophosphate pesticide parathion methyl. By changing the reaction temperature in the range from 5 oC to 95 oC, several properties (i.e., crystallinity, grain size and surface area) of nanoceria can be easily controlled. The catalytic decomposition of parathion methyl to its degradation product 4-nitrophenol was highly dependent on the CeO2 preparation temperature. It was demonstrated that at low temperature (i.e. 5 oC), CeO2 with very small crystallites (&lt;2 nm) and high surface area can be obtained. For practical use, it was demonstrated that highly crystalline CeO2 can be prepared at room-temperature (30 oC) in at least 100 g batches. It was shown that precipitated nanoceria had high thermal stability and its post-synthesis annealing up to 400 oC did not significantly alter the material properties and hence the catalytic activity. Furthermore, as shown by the reusability tests, the sorbent can be reactivated by simply washing with water which demonstrated its durability.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

RSC Advances

ISSN

2046-2069

e-ISSN

—

Svazek periodika

10

Číslo periodika v rámci svazku

24

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

10

Strana od-do

14441-14450

Kód UT WoS článku

000528043700063

EID výsledku v databázi Scopus

2-s2.0-85083458536