Polystyrene Thorium(IV) Phosphate as a New Crystalline and Cadmium Selective Fibrous Ion Exchanger. Synthesis Characterization and Analytical Applications

Abstract

Some investigations on the preparative procedures of fibrous polystyrene thorium(IV) phosphate (PStThP) are reported. This new fibrous ion exchanger has been characterized on the basis of scanning electron microscopy, X-ray diffraction analysis, IR, thermogravimetric analysis, and ion exchange studies. The ion exchange capacity for Na+ ion is found to be 4.52 mequiv/dry g basis. Separation factors and K d values for various cations at different concentrations have been determined, and a marked selectivity for Cd(II) has been found. The unusual selectivity for Cd(II) should lead to some useful practical applications.

Determination of ion-exchange kinetic parameters for the poly-o-methoxyaniline Zr(IV) molybdate composite cation-exchanger

“…Hence, research has been motivated to the investigators to have various applications of organic-inorganic composite ion-exchangers in analytical chemistry owing to their better mechanical, chemical, thermal and radiation stabilities, reproducibility and possessing good selectivity for heavy toxic metals [9][10][11][12][13][14][15][16][17][18][19][20], indicating useful environmental applications [21][22][23]. New aapplications of composite materials have been explored in the fields of heterogeneous catalysis [24,25], protective coatings [26], solid polymer electrolyte membrane fuel cells [27,28], ion selective membrane electrodes [23,29], gas perm-selectivity [30,31], ion transport [32,33] and ion exchange [34].…”

Effect of Surfactants and Temperature on Adsorption Behavior of Metal Ions on Organic–Inorganic Hybrid Exchanger, Acrylamide Aluminum Tungstate

“…A second limitation is the non-reproducible character of inorganic ion-exchangers. In this context researchers have been motivated to investigate organic-inorganic hybrid exchangers with better chemical, thermal and radiation stabilities, as well as improved reproducibility and selectivity for heavy toxic metals [1][2][3][4][5][6][7][8][9][10][11][12]. Out of a large number of such materials studied so far, acrylamide aluminum tungstate has shown promising ionexchange behavior for some alkaline earth and heavy metal ions.…”

Removal of lead (II) from aqueous environment by a fibrous ion exchanger: Polycinnamamide thorium (IV) phosphate

“…Nitrate/chloride salt of each cation was used for this purpose. The eluent was titrated against a standard alkali solution to determine the total amount of H + released which is equivalent to the cation retained by the material [30]. The magnitude of elution depends on the concentration of the eluent.…”