Synthesis, characterization, and sorption properties of silica gel-immobilized pyrimidine derivative

Aggregation and adsorption of reactive dyes in the presence of an anionic surfactant on mesoporous aminopropyl silica

“…Many micro-mesoporous, crystalline, and amorphous families of adsorbents, such as zeolites, activated carbons, silica and alumina gels, ion-exchange resins, and polymeric sorbents, with a wide spectrum of surface chemistry and pore structure, have been used to carry out the desired separations [2][3][4]. In the design of improved adsorbents for specific substances, surface modification is very helpful in the improvement of the adsorption capacity and selectivity of the adsorbents by taking advantage of specific interactions between the adsorbents and the adsorbates [5]. Based on these considerations, functionalized mesoporous oxides have been regarded as effective adsorbents because of their high surface area, their large-diameter and -volume functionalized pore channels, and their narrow pore size distribution [6].…”

“…Based on these considerations, functionalized mesoporous oxides have been regarded as effective adsorbents because of their high surface area, their large-diameter and -volume functionalized pore channels, and their narrow pore size distribution [6]. The high surface area allows the binding of a large number of surface groups, and the large-diameter and -volume functionalized pore channels allow selective adsorption of specific adsorbates [5,6].…”

Selective Preconcentration of Uranyl Ion by Silica Gel Phases Modified with Chelating Compounds as Inorganic Polymeric Ion Exchangers

“…This refers to the chelation of -COOH group through the hydroxylic oxygen atom and prevention of the intramolecular hydrogen bond. 58,59 Silica gel phase (III) showed a peak at 1660 cm −1 due to the stretching vibration of azomethine, C=N. The same type of chelating centers was found to participate in the complex formation of phase (III)-uranyl as in the case of phase (II).…”

Solid phase extraction using silica gel modified with azo-dyes derivative for preconcentration and separation of Th(IV) ions from aqueous solutions

“…Use of compounds with donor atoms as nitrogen, oxygen, and sulfur is always aimed in coordination chemistry, solid or liquid phase extraction, separation, and preconcentration techniques due to their high reactivity and selectivity for binding with electron acceptor centers as metal ions [31,32]. The immobilization of similar compounds on support media for the production of newly modified solid phases is considered as a major discipline in chromatographic applications and analytical chemistry [33].…”