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Formation of iron sulfide photocatalytic colloidal dispersion via pulsed laser ablation in liquids.
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SYSNO ASEP 0547308 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Formation 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 number 012034 Source Title IOP Conference Series: Materials Science and Engineering, Volume 613, Issue 1. - Bristol : IOP PUBLISHING LTD, 2019 - ISSN 1757-8981 Number of pages 6 s. Publication form Online - E Action Conference on Competitive Materials and Technology Processes /5./ Event date 08.10.2018 - 12.10.2018 VEvent location Miskolc-Lillafured Country HU - Hungary Event type EUR Language eng - English Country GB - United Kingdom Keywords catalyst ; zeta-potencial ; nanoparticles Subject RIV CF - Physical ; Theoretical Chemistry OECD category Physical chemistry Institutional support UCHP-M - RVO:67985858 UT WOS 000562600500033 EID SCOPUS 85075100933 DOI 10.1088/1757-899X/613/1/012034 Annotation Pulsed 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. Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2022 Electronic address https://iopscience.iop.org/article/10.1088/1757-899X/613/1/012034/pdf
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