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Novel synthesis of ZrxTi1-xOn mixed oxides using titanyl sulphate and pressurized hot and supercritical fluids, and their photocatalytic comparison with sol-gel prepared equivalents

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27710%2F17%3A10237585" target="_blank" >RIV/61989100:27710/17:10237585 - isvavai.cz</a>

  • Alternative codes found

    RIV/00216208:11320/17:10364369 RIV/00216275:25310/17:39911955 RIV/61989100:27640/17:10237585

  • Result on the web

    <a href="https://www.sciencedirect.com/science/article/pii/S0025540817304920" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0025540817304920</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1016/j.materresbull.2017.07.023" target="_blank" >10.1016/j.materresbull.2017.07.023</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Novel synthesis of ZrxTi1-xOn mixed oxides using titanyl sulphate and pressurized hot and supercritical fluids, and their photocatalytic comparison with sol-gel prepared equivalents

  • Original language description

    ZrxTi1-xOn mixed oxides with five various molar ratios of Zr:Ti and their parent oxides were prepared, combining thermal hydrolysis (H) with pressurized hot water crystallization and supercritical methanol drying. Their photoactivity was compared to equivalent materials prepared by sol-gel (G) method. Zr0.1Ti0.9On-G was the most photoactive mixed oxide, which showed significantly higher photoactivity than Zr0.1Ti0.9On-H. Higher photoactivity of Zr0.1Ti0.9On-G can be attributed to phase composition (anatase-brookite phase mixture) and smaller TiO2 anatase crystallite-size. The Zr dopation in TiO2 did not improve the photoactivity neither of sol-gel-synthetized, nor thermal hydrolysis-synthetized mixed oxides in AO7 photodegradation. Zr in higher loadings (&gt;10 mol%) formed separate monoclinic and tetragonal ZrO2 and monoclinic zirconium titanates. Unlike Zr4+ ions in Zr doped TiO2 the separate monoclinic and tetragonal ZrO2 and monoclinic zirconium titanates did not serve as electron trapping centres but as electron-hole recombination centres. The Zr loading in TiO2 should be below 10 mol%. (C) 2017 Published by Elsevier Ltd.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    20505 - Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; filled composites)

Result continuities

  • Project

    <a href="/en/project/GA14-23274S" target="_blank" >GA14-23274S: Unconventional preparation of nanostructured metal oxides by using pressurized and supercritical fluids</a><br>

  • Continuities

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

Others

  • Publication year

    2017

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    Materials Research Bulletin

  • ISSN

    0025-5408

  • e-ISSN

  • Volume of the periodical

    95

  • Issue of the periodical within the volume

    1

  • Country of publishing house

    GB - UNITED KINGDOM

  • Number of pages

    8

  • Pages from-to

    95-103

  • UT code for WoS article

    000412378500012

  • EID of the result in the Scopus database

    2-s2.0-85025697953