Počet záznamů: 1
Magnetically modified nanogold-biosilica composite as an effective catalyst for CO oxidation
- 1.
SYSNO ASEP 0510770 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Magnetically modified nanogold-biosilica composite as an effective catalyst for CO oxidation Tvůrce(i) Holišová, V. (CZ)
Natšinová, M. (CZ)
Kratošová, G. (CZ)
Chromčáková, Ž. (CZ)
Schröfel, A. (CZ)
Vávra, I. (SK)
Životský, O. (CZ)
Šafařík, Ivo (BC-A) RID, ORCID
Obalová, L. (CZ)Zdroj.dok. Arabian Journal of Chemistry . - : Elsevier - ISSN 1878-5352
Roč. 12, č. 7 (2019), s. 1148-1158Poč.str. 11 s. Jazyk dok. eng - angličtina Země vyd. SA - Saudská Arábie Klíč. slova biosynthesis ; carbon monoxide ; catalysis ; ferrofluid ; nanogold-biosilica Vědní obor RIV CA - Anorganická chemie Obor OECD Inorganic and nuclear chemistry CEP LTC17020 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Způsob publikování Open access Institucionální podpora BC-A - RVO:60077344 UT WOS 000494954400022 EID SCOPUS 85058363232 DOI 10.1016/j.arabjc.2018.12.002 Anotace The temperature-dependent biosynthesis of gold nanoparticles (AuNP) using diatom cells of Diadesmis gallica was successfully performed. The resulting biosynthesis product was a bionanocomposite containing AuNP (app. 20 nm) subsequently anchored on the silica surface of diatomaceous frustules. As-prepared nanogold-biosilica composite was tested as catalyst in the oxidation of carbon monoxide using gas chromatograph with thermal conductivity detector. For catalytic activity enhancement, bionanocomposite was magnetically modified by ferrofluid using two different methods, i.e., with and without the use of methanol. The oxidation of CO at 300 °C was 58–60% in the presence of nanogold-biosilica composites. CO conversion at 300 °C was only 15% over magnetically responsive sample modified in the presence of methanol. On the other hand, complete CO conversion was reached over direct (without methanol) magnetically modified nanogold-biosilica composite at 330 °C (GHSV = 60 l g−1 h−1). Our results show, that the type of magnetic modification can influence the catalytic activity of bionanocomposite. The best catalytic effect in CO conversion established direct magnetically modified nanogold-biosilica composite. Pracoviště Biologické centrum (od r. 2006) Kontakt Dana Hypšová, eje@eje.cz, Tel.: 387 775 214 Rok sběru 2020 Elektronická adresa https://www.sciencedirect.com/science/article/pii/S1878535218302521?via%3Dihub
Počet záznamů: 1