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Mg-Al-La LDH-MnFe2O4 hybrid material for facile removal of anionic dyes from aqueous solutions
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SYSNO ASEP 0498856 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Mg-Al-La LDH-MnFe2O4 hybrid material for facile removal of anionic dyes from aqueous solutions Author(s) Mrózek, Ondřej (UACH-T) RID, ORCID, SAI
Ecorchard, Petra (UACH-T) SAI, RID, ORCID
Vomáčka, Petr (UACH-T) ORCID, SAI
Ederer, J. (CZ)
Smržová, Darina (UACH-T) ORCID, SAI, RID
Šrámová Slušná, Michaela (UACH-T) SAI
Machálková, Aneta (UACH-T) SAI, ORCID, RID
Nevoralová, Martina (UMCH-V) RID, ORCID
Beneš, Hynek (UMCH-V) RID, ORCIDSource Title Applied Clay Science. - : Elsevier - ISSN 0169-1317
Roč. 169, MAR (2019), s. 1-9Number of pages 9 s. Language eng - English Country NL - Netherlands Keywords Acid orange 7 ; Adsorption ; Mg-Al-La layered double hydroxides ; MnFe2O4 nanoparticles ; Urea method Subject RIV CA - Inorganic Chemistry OECD category Inorganic and nuclear chemistry Subject RIV - cooperation Institute of Macromolecular Chemistry - Macromolecular Chemistry R&D Projects GA17-08273S GA ČR - Czech Science Foundation (CSF) LM2015073 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Open access with time embargo (01.03.2021) Institutional support UACH-T - RVO:61388980 ; UMCH-V - RVO:61389013 UT WOS 000458225700001 EID SCOPUS 85058645821 DOI 10.1016/j.clay.2018.12.018 Annotation The urea hydrolysis method was applied to prepare Mg-Al-La layered double hydroxides (LDH) and its hybrids with different amounts of magnetic MnFe2O4 nanoparticles. The new hybrid materials were characterized by X-ray powder diffraction, FTIR and Raman spectroscopy, AFM, SEM, TEM/EDX microscopic methods, BET specific surface area determination and inductively coupled plasma (ICP). The AFM and TEM/EDX analyses clearly showed MnFe2O4 nanoparticles to be predominantly localized on the surface of LDH sheets. Almost two-fold increase of the specific surface area was observed for the Mg-Al-La LDH-MnFe2O4 hybrids compared to the pristine LDH. All synthesized hybrids were studied for their adsorption capacities of Acid orange 7 dye. The adsorption studies were measured at pH 4.0, 7.0 and 10.0. The resulting data were fitted by Langmuir and Langmuir-Freundlich models. The Langmuir isotherm model exhibited a maximum adsorption capacity of Acid orange 7 dye (687.9 mg/g) for Mg-Al-La LDH-MnFe2O4 hybrid material. The lower pH positively affected higher adsorption capacity of Acid orange 7 dye. The prepared Mg-Al-La LDH-MnFe2O4 hybrid materials thus showed to be new promising adsorbents of anionic dyes. Workplace Institute of Inorganic Chemistry Contact Jana Kroneislová, krone@iic.cas.cz, Tel.: 311 236 931 Year of Publishing 2020 Electronic address http://hdl.handle.net/11104/0293774
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