Calcined and organo-modified Zn-Al layered double hydroxides (LDHs) were studied as adsorbents and photocatalysts for removal of cationic dye, as namely methylene blue (MB). Zn-Al LDHs with a cationic ratio of 2:4 were obtained by the coprecipitation method. As-synthesized samples were calcined at different temperatures and the phase transformations were investigated by XRD, TG/DTG, and UV-vis-...

The effects of calcination on spent bleaching earth ash (SBEA) were investigated in terms its contribution to pozzolanic reactivity as well the strength blended cement mortar when used partial substitution. SBEA waste, which is plentiful global stock, showed some potential material reduce reliance traditional clinker cement. However, actual research use replacement and how it may benefit from w...

Temperature- and humidity-sensing properties were evaluated of NixMg1-x spinel ferrites (0 ≤ x 1) synthesized by a sol-gel combustion method using citric acid as fuel nitrate ions oxidizing agents. After the exothermic reaction, amorphous powders calcined at 700 °C followed characterization with XRD, FTIR, XPS, EDS Raman spectroscopy FESEM microscopy. Synthesized tested humidity- temperature-se...

The preparation of TiO(2) nanocrystallite powders coated with and without 9 mol% ZnO has been studied for cosmetic applications in sunscreens by a co-precipitation process using TiCl(4) and Zn(NO(3))(2)·6H(2)O as starting materials. XRD results show that the phases of anatase TiO(2) and rutile TiO(2) coexist for precursor powders without added ZnO (T-0Z) and calcined at 523 to 973 K for 2 h. Wh...

Herein, we describe a strategy for converting catalytically inactive, highly crystalline nanoparticle superlattices embedded in silica into catalytically active, porous structures through superlattice assembly and calcination. First, a body-centered cubic (bcc) superlattice is synthesized through the assembly of two sets of 5 nm gold nanoparticles chemically modified with DNA bearing complement...

This study presents the development of a method for washcoating Ni/boehmite gels, prepared by sol–gel process, onto surface commercial ceramic monolith. Indeed, cordierite monolith in honeycomb shape was used as substrate Ni/Al2O3 deposition. An experimental assembly made order to apply coating on surface. Different suspensions were with various viscosities, and multiple parameters tested withd...

PURPOSE The purpose of the present study was to evaluate the flexural strength of the joint between glass-infiltrated alumina frames and the experimental adjusting agent (MA modifier) that contains alumina and magnesia. METHODS A commercially available adjusting agent (Optimizer), a slurry of alumina powder (Alumina modifier), and a bulk specimen (joint-free alumina) were used as controls. Be...

in the present investigation surface modification of silica nanoparticles by alumina was carried out by sol-gel process. fourier transform infrared (ftir) and x-ray fluorescence (xrf) confirmed the synthesis of silica and the surface modification as alumina is anchored to silica surface. field emission scanning electron microscopy (fesem) and transmission electron microscopy (tem) investigation...

The effects of nanocatalyst composition and calcination parameters on the performance Fe–Mn–Ce ternary nanocatalysts supported alumina granules in a laboratory fixed bed microreactor have been evaluated. Nanocatalysts were synthesized by incipient wetness impregnation under vacuum method (simultaneous metal species). samples used for hydrogenation carbon monoxide via Fischer-Tropsch synthesis. ...