Studies on tetracycline hydrochloride sorbed zirconium tungstophosphate; La(III)-selective chelating ion exchanger

Fabrication of a highly selective Eu(III) membrane sensor based on a new S–N hexadentates Schiff's base

“…Literature survey revealed that all reported lanthanide membrane sensors have nitrogen or sulfur, or both, as donating atoms [2][3][4][5][6][7][8][9][10][11][21][22][23][24][25]. Having two sulfur atoms as well and four nitrogen donor atoms in the structure of SNSB, the stability and selectivity of the complexes of SNSB with transition and heavy metal ions complexes over other metal ions, especially alkali and alkaline earth cations, are expected to increase.…”

Study on Selective Removal of Impurity Iron from Leached Copper-Bearing Solution Using a Chelating Resin

“…A strong peak at 1655 cm −1 was ascribed to the stretching vibrations of C=O in acylamino groups [33], while the peak at 1406 cm −1 was ascribed to C-N stretching vibration [35]. In addition, the peak at 1451 cm −1 suggested the deformation vibrations of metal hydroxyl groups and interstitial water (δ 3 (M-OH) + H 2 O inters) [36]. …”

“…A strong peak at 1655 cm −1 was ascribed to the stretching vibrations of C=O in acylamino groups [33], while the peak at 1406 cm −1 was ascribed to C-N stretching vibration [35]. In addition, the peak at 1451 cm −1 suggested the deformation vibrations of metal hydroxyl groups and interstitial water (δ3 (M-OH) + H2O inters) [36]. When iron was adsorbed at 298 and 328 K (Figure 11b,c, respectively), the peaks of ester carbonyl groups shifted to 1731 and 1726 cm −1 , respectively, indicating the adsorption of iron with the -COO − group, which was further confirmed by the desorbed resin shown in Figure 11d where a peak at 1733 cm −1 is present again.…”

Development of chitosan supported zirconium(IV) tungstophosphate composite for fluoride removal

“…Zirconium-based ion exchangers have received attention because of their excellent ion-exchange behaviour and some important chemical applications in the field of ion exchange. The selectivity may be enhanced by varying the composition of the materials [7][8][9][10][11].…”

“…To circumvent such technological bottlenecks, polymeric hybrid composites were prepared by dispersing powdered ZrWP particles onto porous polymeric substrates. Styrene supported zirconium(IV) tungstophosphate composite was prepared and used in the exchange of cations and sorption of pesticides [10,11]. Currently, the biopolymers namely chitin and chitosan possess the unique properties like biodegradability, biocompatibility and bioactivity.…”