The influence of nd and sm on the structure and properties of sol-gel-derived tio2 powders

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creativework.keywordsPowders, Sol-gel, Thermal stability, X-ray diffraction
creativework.publisherMDPI AGen
dc.contributor.authorBachvarova-Nedelcheva A.
dc.contributor.authorYordanov S.
dc.contributor.authorIordanova R.
dc.contributor.authorStambolova I.
dc.contributor.authorStoyanova A.
dc.contributor.authorGeorgieva N.
dc.contributor.authorNemska V.
dc.date.accessioned2024-07-10T14:27:05Z
dc.date.accessioned2024-07-10T14:50:02Z
dc.date.available2024-07-10T14:27:05Z
dc.date.available2024-07-10T14:50:02Z
dc.date.issued2021-07-01
dc.description.abstractTiO2 nanopowders modified by Nd and Sm were prepared using the sol-gel technique. It was found by XRD analysis that the samples containing Sm are amorphous up to 300◦C, while those with Nd preserve a mixed organic-inorganic amorphous structure at higher temperatures (400◦C). The TiO2 (rutile) was not detected up to 700◦C in the presence of both modified oxides. TiO2 (anatase) crystals found at about 400◦C in the Sm-modified sample exhibited an average crystallite size of about 25–30 nm, while doping with Nd resulted in particles of a lower size—5–10 nm. It was established by DTA that organic decomposition is accompanied by significant weight loss occurring in the temperature range 240–350◦C. Photocatalytic tests showed that the samples heated at 500◦C possess photocatalytic activity under UV irradiation toward Malachite green organic dye. Selected compositions exhibited good antimicrobial activity against E. coli K12 and B. subtilis.
dc.identifier.doi10.3390/molecules26133824
dc.identifier.issn1420-3049
dc.identifier.scopusSCOPUS_ID:85109190551en
dc.identifier.urihttps://rlib.uctm.edu/handle/123456789/656
dc.language.isoen
dc.source.urihttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85109190551&origin=inward
dc.titleThe influence of nd and sm on the structure and properties of sol-gel-derived tio2 powders
dc.typeArticle
oaire.citation.issue13
oaire.citation.volume26
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