Rod-like particles of silica-coated maghemite: synthesis via akaganeite, characterization and biological properties

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F19%3A00519367" target="_blank" >RIV/68378271:_____/19:00519367 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11150/19:10388401 RIV/00216208:11320/19:10388401 RIV/00216275:25310/19:39914956

Výsledek na webu

<a href="https://doi.org/10.1016/j.jmmm.2018.12.037" target="_blank" >https://doi.org/10.1016/j.jmmm.2018.12.037</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jmmm.2018.12.037" target="_blank" >10.1016/j.jmmm.2018.12.037</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Rod-like particles of silica-coated maghemite: synthesis via akaganeite, characterization and biological properties

Popis výsledku v původním jazyce

A multistep procedure, employing akaganeite FeO(OH,Cl) as a precursor, was developed for the preparation of rod-like maghemite particles for medical applications. At first, akaganeite rods with length of several hundred nm and width of ≈85 nm were prepared under hydrothermal conditions and were subsequently coated with mesoporous silica. Such coating enabled to maintain the shape of rods during the following steps that involved structural transformation of akaganeite to maghemite, i. e. γ-Fe2O3. Then the original protective coating was removed by alkaline leaching, bare maghemite rods were isolated, and their structure and ferrimagnetic order were characterized by X-ray diffraction, TEM, Mössbauer spectroscopy and SQUID magnetometry. The oxidation state of Fe was unambiguously determined by Mössbauer spectroscopy. At least partial ordering of vacancies in the maghemite structure was evidenced. The silica-coated product did not show any cytotoxicity up to 0.42 mmol(Fe)/L.

Název v anglickém jazyce

Rod-like particles of silica-coated maghemite: synthesis via akaganeite, characterization and biological properties

Popis výsledku anglicky

A multistep procedure, employing akaganeite FeO(OH,Cl) as a precursor, was developed for the preparation of rod-like maghemite particles for medical applications. At first, akaganeite rods with length of several hundred nm and width of ≈85 nm were prepared under hydrothermal conditions and were subsequently coated with mesoporous silica. Such coating enabled to maintain the shape of rods during the following steps that involved structural transformation of akaganeite to maghemite, i. e. γ-Fe2O3. Then the original protective coating was removed by alkaline leaching, bare maghemite rods were isolated, and their structure and ferrimagnetic order were characterized by X-ray diffraction, TEM, Mössbauer spectroscopy and SQUID magnetometry. The oxidation state of Fe was unambiguously determined by Mössbauer spectroscopy. At least partial ordering of vacancies in the maghemite structure was evidenced. The silica-coated product did not show any cytotoxicity up to 0.42 mmol(Fe)/L.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

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

2019

Kód důvěrnosti údajů

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

Název periodika

Journal of Magnetism and Magnetic Materials

ISSN

0304-8853

e-ISSN

—

Svazek periodika

476

Číslo periodika v rámci svazku

Apr

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

149-156

Kód UT WoS článku

000456696000022

EID výsledku v databázi Scopus

2-s2.0-85058974290