using fe(no3)3.9h2o, co(no3)2.6h2o and mn(no3)2.4h2o the magnetic properties of nanoparticles trimetalic iron - cobalt - manganese, with supported magnesium oxide have been prepared by co-precipitation and solvothermal methods. the prepared samples are characterized by scanning electron microscope (sem), x-ray diffraction (xrd), vibrating sample magnetometer (vsm) and brunaer-emmett-teller (bet...

nanocomposite of zro2/zno was prepared under ultrasonic irradiation by sol gel process from directly mixing zirconium and zinc gels. the mixture was placed under ultrasonic irradiation for 2 hours. after the aging time and filtration of the reaction mixture, the filtrated composite gel was calcinated at 500 °c for 3h in furnace. the precursor gels of zirconium and zinc were prepared from dissol...

pure and zno-doped ni0.1co0.9fe2o4 catalyst were prepared by co-precipitation method and thermal decomposition in air calcinated at 400-700°c and that treated with different amounts of zinc nitrate (0.46-2.25 w% zno). x-ray powder diffractometry, scanning electron microscopy (sem) and bet analysis of nitrogen adsorption isotherms investigated the crystalline bulk structure and the surface area ...

Pure and ZnO-doped Ni0.1Co0.9Fe2O4 catalyst were prepared by co-precipitation method and thermal decomposition in air calcinated at 400-700°C and that treated with different amounts of zinc nitrate (0.46-2.25 w% ZnO). X-ray powder diffractometry, scanning electron microscopy (SEM) and BET analysis of nitrogen adsorption isotherms investigated the crystalline bulk structure and the surface area ...

Nanocomposite of ZrO2/ZnO was prepared under ultrasonic irradiation by sol gel process from directly mixing Zirconium and Zinc gels. The mixture was placed under ultrasonic irradiation for 2 hours. After the aging time and filtration of the reaction mixture, the filtrated composite gel was calcinated at 500 °C for 3h in furnace. The precursor gels of zirconium and zinc were prepared ...

All plants, especially cocoa and oil palm, require magnesium (Mg) along with other macro- micro-nutrients. Kieserite as the most common Mg-supplying fertilizer for crops is still imported Indonesia due to lack of natural deposits in country. On hand, dolomites (CaMgCO3) are found abundantly mostly used liming material low MgO content solubility well. Many efforts have been carried out since a c...

Abstract This research aimed to use a low-cost, environmentally friendly adsorbent eliminate the cationic dye Astrazon red 6B (AR) from an aqueous system. For this rationale, nanocomposite hydrogel made of (Gum Acacia/Acrylamide)-calcinated Eggshell/Graphene oxide (GA/AAm)-ES/GO was created using Gamma radiation-induced copolymerization and cross-linking. FT-IR, XRD, EDX mapping, SEM, TGA TEM w...

Nickel oxide (NiO) nanoparticles were formed using the chemical precipitation method. The effect of calcination process on structural parameters, optical bandgap, and photocatalytic performance was investigated. characteristics carried out X-ray diffraction (XRD), Fourier transforms infrared spectroscopy (FTIR), scanning electron microscope (SEM). XRD analysis reveals that NiO crystallized in a...

BACKGROUND The recalcitrant nature of lead (Pb) and mercury (Hg) to degradation represents a real risk living creatures their surrounding ecosystems. Therefore, this study employed ureolytic fungal strain Metschnikowia pulcherrima (29A) bacterial Raoultella planticola (VIP) in removal using the promising CaCO3 bioprecipitation technique, for first time. RESULTS Out 50 isolates, strains 29A VIP ...

The present study is focused on the synthesis of zirconium dioxide (ZrO2) nanomaterials using hydrothermal method assisted by microwave irradiation and solution combustion synthesis. Both techniques resulted in ZrO2 powders with a mixture tetragonal monoclinic phases. For synthesis, further calcination treatment at 800 °C for 15 min was carried out to produce nanopowders dominant phase, as atte...