Low-Density Polyethylene Nanocomposite Containing Zn/Ti Layered Double Hydroxide

Abstract

The presented work shows the synthesis and characterization of Zn/Ti layered double hydroxide (LDH) intercalated with carbonate and dodecyl sulfate ions following its application as a functional filler in LDPE in order to improve the thermal properties and resistance degradation in UV-Vis radiation. X-ray diffractogram patterns of Zn/Ti LDH-CO3 and Zn/Ti LDH-DDS present basal spacing value in the order of 6.81 Å and 38.09 Å, respectively, indicating success in layered compound synthesis. LDPE nanocomposite containing hydrophobic and hydrophilic LDH presented a very well dispersed nanocomposite, as demonstrated in XRD and DSC results. The addition of only 1 % of LDH as filler into LDPE causes an increase of 5.43 oC in the thermal property. Zn/Ti LDH-DDS absorbs more light compared to the Zn/Ti LDH-CO3 due to the enhanced interlayer distance in the presence of DDS in the basal space of LDH, which further the intercalation process of polymer chains within the interlayer regions of LDH.

Modification of pristine layered double hydroxide to form metal oxide composites as an anionic dye photodegradation catalysts

“…Recently, layered double hydroxide (LDH) is more frequently believed to be a potential photocatalyst. It has a formulation in the form of [M II 1-x M III x (OH)2](A n-)x/n.mH2O in which M II symbolizes a divalent cation, M III is a trivalent cation, and A nrepresents an organic or inorganic anion between 2 layers of the cationic structure [3]. The good photocatalytic activity of LDH is able to efficiently degrade organic dyes [4].…”

“…LDH composited with metal oxide TiO2 will facilitate electron transfer, thereby inhibiting recombination in the band gap for both. Photocatalytic degradation using TiO2 and ZnO oxides are economical, and efficient approach compared to organic materials and easy to implement in managing any organic pollutants [3]. TiO2 and ZnO are most commonly used as the photocatalysts for the degradation of organic pollutants [13].…”

Catalytic Activity of LDH-TiO2 and LDH-ZnO in Photodegradation of Procion Red

“…LDH material is brucite-like hydroxide layers composed of cations 2 + (M II ), cations 3 + (M III ) and anions (A n− ) with the composition [M II 1−x M III x (OH) 2 ](A n− ) x/n .mH 2 O (Jaerger et al, 2021;Zhao et al, 2018). This photodegradation catalyst material is often synthesized through the coprecipitation technique because it only goes through one easy step with a good yield (Rahman and Pullabhotla, 2022) .…”

“…Metal oxide semiconductor materials such as TiO 2 and ZnO can be impregnated on LDH to form a photodegradation catalyst. The use of LDH composited with TiO 2 and ZnO will inhibit recombination in the band gap, besides facilitating electron transfer (Jaerger et al, 2021;Bhuvaneswari et al, 2019). The optimum LDH/TiO 2 ratio composition is at 1:1 (Djeda et al, 2020) .…”

Application of M²⁺ (Magnesium, Zinc)/Alumina-Metal Oxide Composites as Photocatalysts for the Degradation of Cationic Dyes

“…This is done in addition to increasing the structural strength, but also composites can be used as photocatalysts in degrading dyestuff s (Djeda et al, 2020). The use of LDH containing metal oxides titanium dioxide (TiO 2 ) and zinc oxide (ZnO) will inhibit electron recombination, besides that the LDH layer facilitates electron transfer (Jaerger et al, 2021;Bhuvaneswari et al, 2019). LDH material is used as a TiO 2 support material because of its good dispersion, helps interact with pollutants and increases the sedimentation rate within minutes or at the end of the photocatalysis process (Jo et al, 2018;Aoudjit et al, 2018).…”