Mesoporous cerium oxide for fast degradation of aryl organophosphate flame retardant triphenyl phosphate

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388980%3A_____%2F19%3A00509885" target="_blank" >RIV/61388980:_____/19:00509885 - isvavai.cz</a>

Alternative codes found

RIV/44555601:13520/19:43894745

Result on the web

<a href="http://hdl.handle.net/11104/0300548" target="_blank" >http://hdl.handle.net/11104/0300548</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/c9ra06575j" target="_blank" >10.1039/c9ra06575j</a>

Result language

angličtina

Original language name

Mesoporous cerium oxide for fast degradation of aryl organophosphate flame retardant triphenyl phosphate

Original language description

Cerium oxide nanoparticles were prepared by calcination of basic cerous carbonate (as a precursor) obtained by precipitation from an aqueous solution. Prepared samples were characterized by X-ray diffraction (XRD), infrared spectroscopy (FTIR), high resolution scanning electron microscopy (HRSEM), BET (Brunauer–Emmett–Teller) surface area and porosity measurement. Prepared cerium oxide was applied as a destructive sorbent for the fast and safe degradation of organophosphorus flame retardant triphenyl phosphate (TPP). It was shown that cerium dioxide was effective in the decomposition of TPP by cleavage of the P–O–aryl bond in the flame retardant molecule. A degradation mechanism for TPP on the ceria surface was proposed. The degradation is governed by conversion of TPP via diphenyl phosphate (DPP) to the final product identified as phenol (Ph). The key parameter increasing the degradation efficiency of CeO2 is the temperature of calcination. At optimum calcination temperature (500 C), the produced ceria retains a sufficiently high surface area and attains an optimum degree of crystallinity (related to a number of crystal defects, and thus potential reactive sites). The fast and efficient degradation of organophosphorus flame retardant TPP was observed in a polar aprotic solventn(acetonitrile) that is miscible with water.

Czech name

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Czech description

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Type

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

CEP classification

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OECD FORD branch

10402 - Inorganic and nuclear chemistry

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2019

Confidentiality

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

Name of the periodical

RSC Advances

ISSN

2046-2069

e-ISSN

—

Volume of the periodical

9

Issue of the periodical within the volume

55

Country of publishing house

GB - UNITED KINGDOM

Number of pages

8

Pages from-to

32058-32065

UT code for WoS article

000490133300030

EID of the result in the Scopus database

2-s2.0-85073419608