Investigation demonstrates metal ions impact glycine transformation and crystal quality, suggesting potential applications in material science.
Key Points
This study aims to understand how Fe<sup>2+</sup>, Zn<sup>2+</sup>, and Ca<sup>2+</sup> influence the phase transformation of glycine.
Monitored phase transformation using ultrasonic velocity measurements.
Conducted X-ray diffraction and microscopy analyses.
Analyzed zeta potential and filtration performance.
Performed thermogravimetric analysis and infrared spectroscopy.
Fe<sup>2+</sup> delayed the transformation from β- to α-glycine more than Zn<sup>2+</sup> and Ca<sup>2+</sup>.
Crystals formed in the presence of Fe<sup>2+</sup> were compact and irregular, while Zn<sup>2+</sup> and Ca<sup>2+</sup> showed moderate thickening of crystals.
Filtration resistance increased significantly with Fe<sup>2+</sup> compared to Zn<sup>2+</sup> and Ca<sup>2+</sup>.