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Formation of iron sulfide photocatalytic colloidal dispersion via pulsed laser ablation in liquids.

  1. 1.
    SYSNO ASEP0547308
    Document TypeC - Proceedings Paper (int. conf.)
    R&D Document TypeConference Paper
    TitleFormation of iron sulfide photocatalytic colloidal dispersion via pulsed laser ablation in liquids.
    Author(s) Vála, L. (CZ)
    Vavruňková, V. (CZ)
    Jandová, Věra (UCHP-M) RID, ORCID, SAI
    Pola, M. (CZ)
    Křenek, T. (CZ)
    Article number012034
    Source TitleIOP Conference Series: Materials Science and Engineering, Volume 613, Issue 1. - Bristol : IOP PUBLISHING LTD, 2019 - ISSN 1757-8981
    Number of pages6 s.
    Publication formOnline - E
    ActionConference on Competitive Materials and Technology Processes /5./
    Event date08.10.2018 - 12.10.2018
    VEvent locationMiskolc-Lillafured
    CountryHU - Hungary
    Event typeEUR
    Languageeng - English
    CountryGB - United Kingdom
    Keywordscatalyst ; zeta-potencial ; nanoparticles
    Subject RIVCF - Physical ; Theoretical Chemistry
    OECD categoryPhysical chemistry
    Institutional supportUCHP-M - RVO:67985858
    UT WOS000562600500033
    EID SCOPUS85075100933
    DOI10.1088/1757-899X/613/1/012034
    AnnotationPulsed laser irradiation of iron sulfide in water and ethanol allows laser ablation and generation of FeS nano/micro particles. Measurement of the size distribution reveals 100, 1000 and 5000 nm sized particles in water and 180 nm sized particles in ethanol. The values of zeta potential: 13.2 mV for colloid in water confirm incipient stability and tendency for coagulation whereas the value: -40.6 mV shows good stability of ablatively achieved nanoparticles in ethanol. SEM analyses of particles obtained by evaporation of solvents on Ta substrate revealed shapeless, roundshape and sheet-like morphology of agglomerates whose size span from units up to tens of μm. Also spherical particles sized around tens of nm were detected. EDX shows Fe/S ratio ∼3.25 and ∼ 1.2 for particles ablated in water and ethanol respectively. Raman spectroscopy indicates the formation of mackinawite (Fe1+xS) and pyrrhotite (Fe1-xS) phase. The photocatalytic effect of prepared water colloid was tested in methylene blue (MB) degradation under the daylight.
    WorkplaceInstitute of Chemical Process Fundamentals
    ContactEva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227
    Year of Publishing2022
    Electronic addresshttps://iopscience.iop.org/article/10.1088/1757-899X/613/1/012034/pdf
Number of the records: 1  

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