Nanostructured TiO2 and ZnO prepared by using pressurized hot water and their eco-toxicological evaluation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27710%2F17%3A10237894" target="_blank" >RIV/61989100:27710/17:10237894 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989100:27740/17:10237894 RIV/61988987:17310/17:A1801OAP RIV/00216208:11320/17:10364345

Výsledek na webu

<a href="https://link.springer.com/article/10.1007/s11051-017-3877-8" target="_blank" >https://link.springer.com/article/10.1007/s11051-017-3877-8</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11051-017-3877-8" target="_blank" >10.1007/s11051-017-3877-8</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Nanostructured TiO2 and ZnO prepared by using pressurized hot water and their eco-toxicological evaluation

Popis výsledku v původním jazyce

The eco-toxicological effects of unconventionally prepared nanostructured TiO2 and ZnO were evaluated in this study, since both oxides are keenly investigated semiconductor photocatalysts in the last three decades. Unconventional processing by pressurized hot water was applied in order to crystallize oxide materials as an alternative to standard calcination. Acute biological toxicity of the synthesized oxides was evaluated using germination of Sinapis alba seed (ISO 11269-1) and growth of Lemna minor fronds (ISO 20079) and was compared to commercially available TiO2 Degussa P25. Toxicity results revealed that synthesized ZnO as well as TiO2 is toxic contrary to commercial TiO2 Degussa P25 which showled stimulation effect to L. minor and no toxicity to S. alba. ZnO was significantly more toxic than TiO2. The effect of crystallite size was considered, and it was revealed that small crystallite size and large surface area are not the toxicity-determining factors. Factors such as the rate of nanosized crystallites aggregation and concentration, shape and surface properties of TiO2 nanoparticles affect TiO2 toxicity to both plant species. Seriously, the dissolution of Ti4+ ions from TiO2 was also observed which may contribute to its toxicity. In case of ZnO, the dissolution of Zn2+ ions stays the main cause of its toxicity. [Figure not available: see fulltext.]. © 2017, Springer Science+Business Media Dordrecht.

Název v anglickém jazyce

Nanostructured TiO2 and ZnO prepared by using pressurized hot water and their eco-toxicological evaluation

Popis výsledku anglicky

The eco-toxicological effects of unconventionally prepared nanostructured TiO2 and ZnO were evaluated in this study, since both oxides are keenly investigated semiconductor photocatalysts in the last three decades. Unconventional processing by pressurized hot water was applied in order to crystallize oxide materials as an alternative to standard calcination. Acute biological toxicity of the synthesized oxides was evaluated using germination of Sinapis alba seed (ISO 11269-1) and growth of Lemna minor fronds (ISO 20079) and was compared to commercially available TiO2 Degussa P25. Toxicity results revealed that synthesized ZnO as well as TiO2 is toxic contrary to commercial TiO2 Degussa P25 which showled stimulation effect to L. minor and no toxicity to S. alba. ZnO was significantly more toxic than TiO2. The effect of crystallite size was considered, and it was revealed that small crystallite size and large surface area are not the toxicity-determining factors. Factors such as the rate of nanosized crystallites aggregation and concentration, shape and surface properties of TiO2 nanoparticles affect TiO2 toxicity to both plant species. Seriously, the dissolution of Ti4+ ions from TiO2 was also observed which may contribute to its toxicity. In case of ZnO, the dissolution of Zn2+ ions stays the main cause of its toxicity. [Figure not available: see fulltext.]. © 2017, Springer Science+Business Media Dordrecht.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20505 - Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; filled composites)

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

2017

Kód důvěrnosti údajů

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

Název periodika

Journal of Nanoparticle Research

ISSN

1388-0764

e-ISSN

—

Svazek periodika

19

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

13

Strana od-do

198

Kód UT WoS článku

000411861500001

EID výsledku v databázi Scopus

2-s2.0-85020272595