Adsorption of Pb2+, Zn2+, and Cd2+ from waters by amorphous titanium phosphate

Heavy metal ion adsorption onto polypyrrole-impregnated porous carbon

“…This phenomenon was also shown in the adsorption of Pb 2+ and Ag + ions, where the different adsorption capacity was a consequence of disparity in cation radius and interaction enthalpy value [1]. The interaction of nitrogen atoms and metals ion was confirmed by the blue shift of the C-N stretching band in IR spectroscopy [6]. Heavy metal ion uptake was ca.…”

“…Adsorption is the most attractive removal method because of its simplicity, convenience, and high removal efficiency [1,4]. Furthermore, adsorbents with specific functional groups have been developed to improve the adsorption capacity [5][6][7][8][9][10][11][12].…”

Impregnating titanium phosphate nanoparticles onto a porous cation exchanger for enhanced lead removal from waters

“…In our previous study [16], titanium phosphate was found to be a highly selective sorbent toward lead ion even in the presence of competing cations (Na + , Ca 2+ , and Mg 2+ ) at greater concentration. Such sorption preference possibly mainly results from the synergetic effect of electrostatic interaction and formation of inner-sphere complexes [16]. However, TiP is present as fine or ultrafine particles and cannot be employed in fixed-bed or any other flow-through systems due to the excessive pressure drop and poor mechanical rigidity.…”

“…It is extremely insoluble in water and offers high capacity, fast kinetics, and is superior to the organic exchangers in terms of thermal stability and resistance to radiation and abrasion [15]. In our previous study [16], titanium phosphate was found to be a highly selective sorbent toward lead ion even in the presence of competing cations (Na + , Ca 2+ , and Mg 2+ ) at greater concentration. Such sorption preference possibly mainly results from the synergetic effect of electrostatic interaction and formation of inner-sphere complexes [16].…”

Syntheses and Applications of Titanium Compound Nanofiber Thin Films

“…Morphology controls to shape nanotubes [19], nanofibers [20], elongated hexagonal nanoplates [21], and so on are also being developed. Applications of titanium phosphate include not just fundamental research on topics such as ion exchange and intercalation reactions but also catalysts [22], selective absorbents for toxic substances (e.g., Pb 2+ , Cd 2+ ) [23,24], the support and release of drugs [25], sodium batteries [26], and solar cells [27]. However, examples of reports on such efforts are primarily about particles, and there have not been many examples of studies on thin films.…”