Environmentally-friendly and ultrasonic-assisted preparation of two-dimensional ultrathin Ni/Co-NO3 layered double hydroxide nanosheet for micro solid-phase extraction of phenolic acids from fruit juices

Abstract

In this paper, we report an environmentally-friendly and low cost synthetic approach for large-scale fabrication of 2-dimentional porous Ni/Co-NO-based layered double hydroxide (Ni/Co-NO-LDH) nanosheet through ultrasonic-assisted process. The synthesis procedure used ethylene glycol/water system as an eco-friendly solvent system. The synthesized LDH was characterized by FE-SEM, TEM, XRD, and FT-IR techniques. FE-SEM and TEM images showed porous structure surface morphology of the synthesized LDH. Also, For Ni/Co-NO-LDH, a hexagonal ultrathin layered was obtained owing to ultrasonic irradiation and applied processing conditions. The prepared LDH was used as sorbent in dispersive micro solid-phase extraction procedure. Two phenolic acids including p-hydroxybenzoic acid and p-coumaric acid were selected as model compounds. Some experimental factors affecting the extraction efficiency of the analytes were investigated and optimized. Finally, the sorbent was used for the extraction of model compound from fruit juice samples followed by high performance liquid chromatography. Linear dynamic range of 0.5-500µgL with a low detection limit (0.1µgL) was obtained by the method. The relative standard deviations were 2.5 and 4.3% for p-hydroxybenzoic acid and p-coumaric acid, respectively. All recoveries were between 82 and 92%.

Mesostructured Hollow Siliceous Spheres for Adsorption of Dyes

“…Research and development on the big family of nanoporous materials, such as siliceous mesoporous materials (SMMs) [1,2], layered double hydroxides (LDHs) [3,4], metal-organic frameworks (MOFs) [5,6], covalent organic frameworks (COFs) [7,8], zeolites [9,10], single/multi-walled carbon nanotubes (CNTs) [11,12], and graphene/reduced graphene oxides (GOs and r-GOs) [13,14], has attracted increasing interest worldwide over recent years. Among the different types of nanoporous materials, especially SMMs have found widespread applications in science and technology due to their unique structural properties, such as non-toxicity, biodegradability, tunable pore structure, functionalizable surface, and the low cost of starting materials [1,15].…”

The effect of sonication and heat treatment on the physicochemical, nutritional and microbiological properties of different sugarcane variants

“…However, this method has been known to cause nutritional degradation and undesirable changes in the natural sensory characteristics of sugarcane juice (Chauhan et al, 2002). Non-thermal treatments such as ultrasound treatment have been actively explored in recent years, as it involves minimal processing (Abbasi et al, 2019;Balthazar et al, 2019;Bhavya & Hebbar, 2019;Guimarães et al, 2019b;Mohd Khairi et al, 2018;Soltani et al, 2018). Minimal processing would significantly help to retain several nutritional and antioxidant properties of the product (Fernández-Barbero et al, 2019;Guimarães et al, 2019a;Guimarães et al, 2019b).…”

Preparation and characterization of poly(amide‐imide)/Mg‐Al LDH nanocomposites; effect of organo‐modified LDH on thermal properties and morphology

“…For better distribution of LDH sheets in the PAI matrix ultrasonic waves was used. In the nanohybride solution, ultrasonic waves created high energy as well as effective shock and led to a better interaction and consequently good dispersion of LDH layers in the PAI matrix . It was expected that nanocomposites containing ILDH had been better properties due to kind of organic modifier of LDH.…”