Synthesis, Characterization and Ion Exchange Properties of a New Ion Exchange Material: Bismuth (III) Iodophosphate

Abstract

Eight samples of the three component cation  exchanger  [Bismuth(III)iodophosphate]  has  been  synthesized by mixing different  ratio of 0.1M bismuth nitrate, 0.1M potassium iodate, 0.1M orthophosphoric acid at pH between 0-1. The material shows ion exchange capacity for Na⁺ ion of 0.5meq/g.  It  has  been  characterized using  I.R., X-ray, TGA studies. A number of ion exchange studies like pH titration, chemical stability, thermal stability and distribution behaviour were studies. Ion exchange capacity has also been determined for various metal ions such as K⁺, Mg²⁺ etc. pH titration method was also used for the determination of ion exchange capacity. On account of the K_d values and elution pattern, the cation exchanger is found to be selective for Pb²⁺.