Title Synthesis and characterization of layered double hydroxides (LDH) replacing the M2+/M3+ Ions with zinc, copper and lanthanum /
Authors Klydžiūtė, Gabrielė ; Gliaudytė, Laura ; Yang, Thomas C-K ; Vasiliauskienė, Dovilė ; Pakalniškis, Andrius ; Sokol, Denis ; Kareiva, Aivaras
ISBN 9786090711026
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Is Part of The 6th International Conference on Rare Earth Materials (REMAT 2024): advances in synthesis, studies and applications, Vilnius, Lithuania, October 20-23, 2024: book of abstracts.. Vilnius : Vilniaus universitetas, 2024. p. 84.. ISBN 9786090711026
Abstract [eng] Recently, layered double hydroxides (LDHs) have attracted substantial attention due to their wide range of important application areas, e.g., catalysis, photochemistry, biomedical science and the environment. LDHs can be fabricated through different synthesis methods. The most common preparation techniques are co-precipitation [1] and recently developed sol-gel method [2]. In this study these two synthetic techniques have been applied for the preparation of Mg-Al LDHs replacing the M2+/M3+ ions with zinc, copper and lanthanum. New layered double hydroxides (LDHs) of Mg2-xZnxAl1(OH)y, Mg2-xCuxAl1(OH)y, and Mg2Al1−xLax(OH)y have been synthesized by two methods. The level of substitution of magnesium by zinc or copper and aluminium by lanthanum has been investigated applying different synthesis methods. As previously mentioned, two synthesis methods, namely co-precipitation and sol-gel, have been developed for the preparation of metal-substituted LDHs with desired chemical composition. Thermal analysis (thermogravimetric analysis (TG) and differential scanning calorimetry (DSC) was used to study the decomposition mechanisms of the starting materials and end products. TG/DSC measurements was performed with Simultaneous Thermal analyser STA6000 from PerkinElmer. Fourier transform infrared spectroscopy (FTIR) was used to control the presence of different functional groups in the synthesized compounds. The data were recorded on PerkinElmer Frontier FT-IR spectrometer. X-ray powder diffraction (XRD) studies were used to identify crystalline phases that are formed during different stages of synthesis. For phase identification XRD data were collected on Rigaku MiniFlex II diffractometer. The morphological features have been investigated using scanning electron microscope (SEM) Hitachi FE-SEM SU-70. Antibacterial properties of the coatings were tested using the inhibition zone method.
Published Vilnius : Vilniaus universitetas, 2024
Type Conference paper
Language English
Publication date 2024