in present investigation, zno nanostructure was synthesized by means of a precipitation and sonochemical methods. the x-ray diffraction (xrd) pattern is shown that the wurtzite structure of zno has the hexagonal symmetry and there is no impurity. the average zno particles crystallite size was calculated about 41 nm. the sem and tem images reveal nanostructure zno particles with a cauliflower-li...

The influence of the interface in ZnO?ZrO2 catalysts for selective hydrogenation CO2 to CH3OH is investigated. Specifically, we perturbed its structure using two different synthetic methods: surface organometallic chemistry (SOMC) and flame-spray pyrolysis (FSP) investigated speciation resulting materials by spectroscopic techniques, such as XAS, NMR, IR, UV-Vis, EPR. results indicate that oxid...

The development of nanocomposite with strong adsorption ability exhibits great potential applications for environmental remediation. However, the pore blocking in preparation frequently constrains sorption diffusion, resulting in low utilization efficiency. Here we synthesized a new nano-ZrO2/Polystyrene (NZO-PS) material tailored with a specific fixed SO3-Na group to enhance Cu(II) removal. Th...

Four Zn(II)-tetra(carboxyphenyl)porphyrins in solution and bound to metal oxide (TiO2, ZnO, and ZrO2) nanoparticle films were studied to determine the effect of the spacer length and anchoring group position (para or meta) on their binding geometry and photoelectrochemical and photophysical properties. The properties of three types of anchoring groups (COOH and COONHEt3) for four Zn(II)-porphyr...

In this study, photocatalytic degradation of paracetamol (acetaminophen), an analgesic and antipyretic drug, was investigated in using semiconductors under UV-B sunlight irradiation. Semiconductor materials, Bi2O3, ZnO, TiO2, ZrO2, were prepared simple sol-gel, coprecipitation, microwave synthesis methods. These photocatalyts characterized by various spectroscopic other techniques. As a result ...

Estuarine and marine sediments are a probable end point for many engineered nanoparticles (ENPs) due to enhanced aggregation and sedimentation in marine waters, as well as uptake and deposition by suspension-feeding organisms on the seafloor. Benthic infaunal organisms living in sediments encounter relatively high concentrations of pollutants and may also suffer toxic effects of ENPs. We tested...

Highly efficient recyclable photocatalysts of ternary g-C 3 N 4 -ZnO/Cu 2 O nanocomposite were designed for photo-degradation RhB dye. The structural, morphological, surface structure and optical properties the as-prepared nanocomposites (NCs) characterized by XRD, FT-IR, FE-SEM with EDS, HRTEM, XPS, BET, UV–Vis DRS PL spectra analysis respectively. efficiencies dye over , /ZnO, /Cu (PCs) 36.4%...

At present, the use of conventional wastewater processes is becoming increasingly challenging, mainly due to presence biorecalcitrant organic matter. Advanced oxidation such as Fenton, Fenton-like and hybrid have been successfully employed for treatment highly concentrated toxic non-biodegradable pollutants. Here, a series bimetallic catalysts, based on Cu/Fe supported over ZrO2, were investiga...