This work explores and elucidates the effect of acetone on the batch photolytic degradation at 253.7 nm of chlorazol black (CB) azo dye in deionized water with relation to various operating parameters, i.e. acetone and CB initial concentrations, liquid temperature and solution pH. A special emph...

The synthesis of a series of trisazo direct dyes obtained by tetrazotization of 4,4′-diaminophenylsulphide and coupling with H-acid and m-phenylenediamines, phenol or resorcinol is described. These compounds dye cotton in green and black shades with good build-up and levelling properties. It ca...

The thermal exfoliation of pyrophyllite on heating above 600 °C was studied to discern its kinetic pathway and correlate it with dehydroxylation. The irreversible thermal expansion data of pyrophyllite was collected from a thermomechanical analyzer at different heating rates (β). Detailed kine...

The flotation separation of pyrite from pyrophyllite using oxidized guar gum (OGM) as depressant has been studied through flotation tests, adsorption and FTIR spectra measurements. Flotation tests on a single mineral and mixed binary minerals show that the reagent schedule of depressant OGM 50 m...

We explored the effects of gas emission by mixtures undergoing alkali-activation of municipal solid waste incineration fly ash (MSWIFA) and pyrophyllite (the mixtures included dehydrated pyrophyllite, MSWIFA, 14 mol/L aqueous sodium hydroxide, and sodium silicate; curing proceed at 105 °C for 2...

We successfully synthesized an efficient photoactive pyrophyllite/TiO2 heterostructures using a sol-gel route at ambient temperature. The samples were prepared by exfoliation of a pyrophyllite layered-type clay by TiO2. The prepared samples exhibited strong photocatalytic activity for the degrad...

The surface charge property and chemical composition are important for flotation investigation. First, the mineral phase and morphology of different pyrophyllite samples were analyzed. The isoelectric points of different pyrophyllite particles also were determined. Moreover, the effect of chemic...

Analysis on suppression effect of depressant on naturally hydrophobic gangue minerals is of great importance for both industrial applications and theoretical research. In this work, the role of glucan in the flotation separation of pyrite and pyrophyllite was studied and the selective depression...

In this investigation, ultrasound irradiation has been proposed as a fast, simple and green method for the synthesis of citrate (Cit) intercalated zinc iron layered double hydroxide (ZnFe/Cit-LDH) through the co-precipitation method. The co-precipitation method created high crystallinity LDH cha...

The adsorption of nitrates with NO3(aq) solutions ranging from 20 mg/L to 400 mg/L with Layered-Double-Hydroxides (LDH) PURAL 70 (Mg70) and an Erbium containing LDH (Er40) were investigated. The X-ray Diffraction measurements (XRD) are accompanied by complemented Matrix Assisted Laser Desorption...

In this research our aim was to obtain pure and Zn doped lead hydroxide nanostructure by chemical root method. For making reaction solution we used 0.04 M aqueous solution of lead nitrate and zinc chloride was mixed with 0.08 M aqueous solution of sodium hydroxide 0.001 M aqueous solution of TEA...

Kaolinite modification by grinding with H3PO4 was conducted to introduce more H+ for potassium exchange, therefore to enhance largely the capacity of potassium fixation. The precursor of Mg-Al LDH by milling both Mg and Al hydroxides was used to incorporate nitrate anions. The modified kaolinite...

In this study, magnetic layered double hydroxides (mag-LDHs) were synthesized through compositing magnetite with three different metals (Mg, Cu and Al) under ultrasound (US, 100 kHz frequency and 50 W power). For the first time, mag-LDHs were applied to sonocatalytic reduction of nitrate (NO3−) ...

Layered double hydroxides (LDHs) belong to two-dimensional (2D) nanoparticle family. Best known as anionic clays, LDHs were the promising choice for a wide range of applications. Despite the widespread research on synthesis and application of LDH as an additive in thermoset resins, a few was kno...

Agricultural activities pose a significant risk of groundwater pollution. Indeed, fertilizers and treated wastewater used for irrigation are, in part, responsible for the deterioration of groundwater and surface water quality. In some cases, soil may provide a protective barrier against this pol...

Cyanide contamination in steel plant wastewater is a challenge. Nitrate intercalated nickel aluminum layered double hydroxide (LDH) is specially designed and synthesized for adsorption of cyanide from wastewater. The LDH was characterized by Field emission scanning electron microscope (FESEM), X...

Hydroxysodalite (H-SOD) microcrystalline particles were synthesized from basalt powder rich in calcic-plagioclase (anorthite) by alkali activation at 80 °C/24 h. Sodium hydroxide (NaOH) solution was used as alkaline activator. The reactivity of the natural solid precursor basalt was studied usi...

Hydroxysodalite nanoparticles (ZW5, ZW10, ZW15, and ZW20) with different crystallite sizes (46.43, 54.98, 62.69, and 64.12 nm, respectively) were hydrothermally synthesized from an aluminum waste. Also, different mmoles of sodium metasilicate pentahydrate as a silicon source (23.58, 47.17, 70.75...

Currently available semiconductor lasers for spectroscopy in the near- and mid-infrared region based on direct band-to-band transitions as gallium-arsenide, indium-phosphide, antimonides and lead-salt containing compounds will be discussed together with the main features of different tunable dio...

In the pursuit of lower cost and higher performance infrared detectors, antimonide-based materials have been increasingly investigated over the past decade. One of the greatest advantages of the III-V materials system is the potential for improved uniformity stemming from the incorporation of la...