Trapping organic molecules in sol–gel aluminosilicate matrices

Removal of malachite green by adsorption and precipitation using aminopropyl functionalized magnesium phyllosilicate

“…Due to the considerable resistance of MG to biodegradation, physical and chemical processes for MG removal have been widely studied. Characteristics of the removal procedures that have been investigated include removal capacity, treatment cost, and operating conditions, among other factors [4][5][6]. Chemical treatment technology is costly and involves complex processes that generate toxic by-products [7].…”

Synthesis and characterization of amorphous aluminosilicates prepared by sol–gel to encapsulate organic dyes

“…The obtained shape corresponds to a type IV isotherm according to the IUPAC classification. The hysteresis loop in the isotherm (not shown here) can be attributed to the presence of open pores where no condensation is evident; therefore, inkbottle shaped pores have to be discarded [38]. According to the results obtained by this technique, the pore diameter varies between 5 and 8 nm (results not shown here).…”

“…The nitrogen adsorption-desorption isotherm of sample SX has been reported previously elsewhere [38]. The obtained shape corresponds to a type IV isotherm according to the IUPAC classification.…”

“…5a. This function has been discussed in a previous work where the sample was impregnated with cationic organic dyes [38]. The material is constituted by chains of TO 4 where T is a Si or Al atom in the tetrahedral building unit of the aluminosilicate, the peak located at a radial distance of 0.17 nm is due to the T-O distance, the one at 0.…”

Removal of Malachite Green (MG) From Aqueous Solutions by Adsorption, Precipitation, and Alkaline Fading Using Talc

“…The typical planes of the talc are marked as (001), (110), (006), (132), and (060, 330) (39)(40)(41). The talc, MG powder, and carbinol base powder mixture showed weak MG and carbinol base peaks, compared with the pristine MG and carbinol base powder.…”