Herein, an ultrasound-assisted dispersive magnetic micro-solid phase extraction (DM-?SPE) approach, along with electrothermal atomic absorption spectrometry (ETAAS) for the determination of lead at trace level in spring, well, river mineral and tap water samples was developed. The step is based on synthesis PbS, following sonochemical decomposition L-cysteine used as sulphide precursor its anch...

Abstract The nanomaterials silver nanoparticles accompanied magnetite impurity (Ag–Fe 3 O 4 ) (AF) and cobalt nano ferrite/silver–magnetite (0.3 CoFe 2 /0.7Ag–Fe (CAF) nanocomposite were prepared by flash auto-combustion using urea as fuel. This is the first time preparing this new material. as-prepared characterized X-ray diffraction pattern, atomic force microscopy, Fourier transform infrared...

Two tungsten disulfide (WS₂)-based core-shell nanocomposites were fabricated using readily available reagents and simple procedures. The surface was pre-treated with a surfactant couple in a layer-by-layer approach, enabling good dispersion of the WS₂ nanostructures in aqueous media and providing a template for the polymerization of a silica (SiO₂) shell. After a Stöber-like reaction, a conform...

BACKGROUND We characterize a novel nanocomposite that acts as an efficient anticancer agent. METHODS This nanocomposite consists of zinc layered hydroxide intercalated with protocatechuate (an anionic form of protocatechuic acid), that has been synthesized using a direct method with zinc oxide and protocatechuic acid as precursors. RESULTS The resulting protocatechuic acid nanocomposite (PA...

In this work, chitosan whiskers (CWs) were first extracted using low-cost and earth-abundant crab shells as materials by a series of chemical processes, and then assembled into chitosan whisker microspheres (CWMs) via a simple photochemical polymerization approach. Subsequently, a cementite (Fe3C) nanocrystal@N-doped graphitic carbon (Fe3C@NGC) nanocomposite was successfully fabricated by high ...

Maghemite/magnetite nanocomposite (γ-Fe2O3/Fe3O4) was prepared via an electrochemical method using pulse alternating current and applied for electrocatalytic reduction sensing of hydrogen peroxide. The structural compositional analysis the γ-Fe2O3/Fe3O4 characterized by XRD, SEM, TEM XPS. Its thermal decomposition behavior studied TG/DSC. mechanism formation proposed. Furthermore, H2O2 performa...

Nanoionics has become increasingly important in devices and systems related to energy conversion and storage. Nevertheless, nanoionics and nanostructured electrodes development has been challenging for solid oxide fuel cells (SOFCs) owing to many reasons including poor stability of the nanocrystals during fabrication of SOFCs at elevated temperatures. In this study, a conformal mesoporous ZrO2 ...