Using Silica Coated Nanoscale Zerovalent Particles for the Reduction of Chlorinated Ethylenes

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22320%2F18%3A43915507" target="_blank" >RIV/60461373:22320/18:43915507 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22350/18:43915507

Výsledek na webu

<a href="https://link.springer.com/article/10.1007/s12633-018-9795-2" target="_blank" >https://link.springer.com/article/10.1007/s12633-018-9795-2</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s12633-018-9795-2" target="_blank" >10.1007/s12633-018-9795-2</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Using Silica Coated Nanoscale Zerovalent Particles for the Reduction of Chlorinated Ethylenes

Popis výsledku v původním jazyce

The impact of a silica coating on the degradation potential of nanoscale zerovalent iron (nZVI) particles toward a mixture of chlorinated ethylenes is presented. The newly employed stabilization method for nZVI, based on silica deposition from saturated sodium silicate water glass, produces nZVI particles with a similar reactivity as non-stabilized particles. Moreover the removal rate constant kM of trichloroethylene (0.1740 L g−1 d−1 Fe0) and cis-dichloroethylene (0.1045 L g−1 d−1Fe0) was significantly improved (almost by a factor of 2) for stabilized nZVI. X-ray photoelectron spectroscopy (XPS) and Wavelength Dispersive X-ray Fluorescence (WDXRF) analyzes revealed a high durability of silica coating and the coating left at least half of nZVI surface silica free for reaction for more than 5 weeks. The silica coating did not affect the surface composition of silica coated nZVI which was confirmed by the very similar distribution of degradation products and corrosion products (Fe3O4, FeOOH) as was found for non-coated nanoparticles. An enhanced reactivity supplemented with a stable corrosion properties indicates that silica coated nZVI has potential as an efficient remediation agent toward chlorinated ethylenes.

Název v anglickém jazyce

Using Silica Coated Nanoscale Zerovalent Particles for the Reduction of Chlorinated Ethylenes

Popis výsledku anglicky

The impact of a silica coating on the degradation potential of nanoscale zerovalent iron (nZVI) particles toward a mixture of chlorinated ethylenes is presented. The newly employed stabilization method for nZVI, based on silica deposition from saturated sodium silicate water glass, produces nZVI particles with a similar reactivity as non-stabilized particles. Moreover the removal rate constant kM of trichloroethylene (0.1740 L g−1 d−1 Fe0) and cis-dichloroethylene (0.1045 L g−1 d−1Fe0) was significantly improved (almost by a factor of 2) for stabilized nZVI. X-ray photoelectron spectroscopy (XPS) and Wavelength Dispersive X-ray Fluorescence (WDXRF) analyzes revealed a high durability of silica coating and the coating left at least half of nZVI surface silica free for reaction for more than 5 weeks. The silica coating did not affect the surface composition of silica coated nZVI which was confirmed by the very similar distribution of degradation products and corrosion products (Fe3O4, FeOOH) as was found for non-coated nanoparticles. An enhanced reactivity supplemented with a stable corrosion properties indicates that silica coated nZVI has potential as an efficient remediation agent toward chlorinated ethylenes.

Druh

J_ost - Ostatní články v recenzovaných periodicích

CEP obor

—

OECD FORD obor

21002 - Nano-processes (applications on nano-scale); (biomaterials to be 2.9)

Projekt

<a href="/cs/project/TA02020654" target="_blank" >TA02020654: Abioticko-biologická technologie pro nápravu ekologických škod</a><br>

Návaznosti

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

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Silicon

ISSN

1876-990X

e-ISSN

—

Svazek periodika

10

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

2593-2601

Kód UT WoS článku

—

EID výsledku v databázi Scopus

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