Počet záznamů: 1
Chemical warfare agent simulant DMMP reactive adsorption on TiO2/graphene oxide composites prepared via titanium peroxo-complex or urea precipitation
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SYSNO ASEP 0495195 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Chemical warfare agent simulant DMMP reactive adsorption on TiO2/graphene oxide composites prepared via titanium peroxo-complex or urea precipitation Tvůrce(i) Henych, Jiří (UACH-T) SAI, RID, ORCID
Štengl, Václav (UACH-T) RID, ORCID, SAI
Mattsson, A. (SE)
Tolasz, Jakub (UACH-T) RID, ORCID, SAI
Österlund, L. (SE)Celkový počet autorů 5 Zdroj.dok. Journal of Hazardous Materials. - : Elsevier - ISSN 0304-3894
Roč. 359, OCT (2018), s. 482-490Poč.str. 9 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova nanocrystalline metal-oxides ; dimethyl methylphosphonate ; graphene-oxide ; photocatalytic activity ; TiO2 surfaces ; In situ DRIFT spectroscopy Vědní obor RIV CA - Anorganická chemie Obor OECD Inorganic and nuclear chemistry Institucionální podpora UACH-T - RVO:61388980 UT WOS 000446794400054 EID SCOPUS 85050773347 DOI 10.1016/j.jhazmat.2018.07.095 Anotace Two water-based methods were used to produce TiO2/graphene oxide (GO) nanocomposites with 1 and 2 wt.% GO. Both procedures exclude the use of organometallic precursors, as well as the high-pressure and high-temperature treatments, which facilitate pure and energy efficient synthesis amenable for larger scale synthesis. Nanocomposites with narrow (< 10 nm) and long spindle-like (< 100 nm) TiO2 nanoparticles supported on GO flakes were obtained (TiO2/GO), and their properties for reactive destruction of the organophosphorus simile chemical warfare agent (CWA) dimethyl methylphosphonate (DMMP) were investigated by in situ DRIFTS spectroscopy. Both synthesis procedures yielded highly reactive nanocomposites with markedly different properties compared to similarly prepared pure TiO2 nanoparticles. GO also induced morphology and texture changes, which were observed to have a significant impact on the adsorption and reactivity of the nano composites, and which were strongly related to synthesis procedure. In particular, the reduction state of GO, as measured by Raman spectroscopy, was observed to play a major role for the reactivity of the TiO2/GO nano composites. Pracoviště Ústav anorganické chemie Kontakt Jana Kroneislová, krone@iic.cas.cz, Tel.: 311 236 931 Rok sběru 2019
Počet záznamů: 1