Number of the records: 1  

TiO2 microrods with stacked 3D nanovoids for photoelectrochemical water splitting

  1. 1.
    SYSNO ASEP0508513
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitleTiO2 microrods with stacked 3D nanovoids for photoelectrochemical water splitting
    Author(s) Mamoň, Filip (UACH-T) SAI, RID
    Fajgar, Radek (UCHP-M) RID, ORCID, SAI
    Jandová, Věra (UCHP-M) RID, ORCID, SAI
    Kočí, Eva (UACH-T) SAI, RID
    Jakubec, Ivo (UACH-T) SAI, RID, ORCID
    Zhigunov, Alexander (UMCH-V) RID, ORCID
    Brovdyová, T. (CZ)
    Bakardjieva, Snejana (UACH-T) SAI, RID, ORCID
    Source TitlePure and Applied Chemistry. - : Walter de Gruyter - ISSN 0033-4545
    Roč. 91, č. 11 (2019), s. 1733-1747
    Number of pages15 s.
    Publication formPrint - P
    ActionInternational Conference on Solid State Chemistry /13./
    Event date16.09.2018 - 21.09.2018
    VEvent locationPardubice
    CountryCZ - Czech Republic
    Event typeWRD
    Languageeng - English
    CountryDE - Germany
    Keywordsnanovoids ; photoelectrochemistry ; SSC-2018 ; TiO2 microrods ; water splitting
    Subject RIVCA - Inorganic Chemistry
    OECD categoryInorganic and nuclear chemistry
    Subject RIV - cooperationInstitute of Macromolecular Chemistry - Macromolecular Chemistry
    Institute of Chemical Process Fundamentals - Inorganic Chemistry
    R&D ProjectsGA18-15613S GA ČR - Czech Science Foundation (CSF)
    Method of publishingOpen access with time embargo (26.11.2020)
    Institutional supportUACH-T - RVO:61388980 ; UCHP-M - RVO:67985858 ; UMCH-V - RVO:61389013
    UT WOS000496795300004
    EID SCOPUS85072557034
    DOI10.1515/pac-2018-1116
    AnnotationThis paper reports an original nonstandard green concept to obtain TiO2 microrods with polyhedral densely stacked 3D nanovoids prepared via the heat treatment of a hydrogen titanate. The intermediate hydrogen titanate was synthesized by a solid-liquid-solid (SLS) route from an ammonia-saturated aqueous solution of TiOSO4 at 0 °C. The effect of the postgrowth thermal annealing procedure to remove ice (water) and the proposed mechanism to explain the underlying transitions from the intermediate precursor to nanostructured TiO2 microrods with stacked 3D nanovoids were investigated. The small-angle X-ray scattering (SAXS) analysis indicates that at temperatures above 500 °C, the release of confined ice (water) takes place, which leads to the creation of self-assembled polyhedral nanovoids open to the surface. Their size ranges from 5 to 78 nm in both length and width, with a depth of ~3.88 nm. The first use of these stacked 1D TiO2 microrods as the working electrode in a photoelectrochemical (PEC) cell for water splitting is demonstrated. The estimated value of ζ-potential depends on both annealing temperature and crystallite size. Anatase sample 1D TiO/800 with ζ-potential (−29.1) mV and average crystallite size ~68 nm was observed to be highly stable in aqueous suspension. The SLS method yields low-cost 1D TiO2 materials possessing high photoreactivity with water. The PEC measurements indicate that three-dimensional hollow structures with a controlled geometry via patterned 1D TiO2 surface are promising materials for hydrogen generation from water splitting.
    WorkplaceInstitute of Inorganic Chemistry
    ContactJana Kroneislová, krone@iic.cas.cz, Tel.: 311 236 931
    Year of Publishing2020
    Electronic addresshttp://hdl.handle.net/11104/0302580
Number of the records: 1  

  This site uses cookies to make them easier to browse. Learn more about how we use cookies.