FTIR spectral analysis of glycine doped ammonium dihydrogen phosphate (ADP) crystal

Abstract

Ammonium Dihydrogen Phosphate crystals doped with Glycine (GADP) has been grown by slow evaporation method, Rotation method and Sankaranarayanan - Ramasamy (SR) methods with different molar concentration. The Fourier Transform Infra-Red (FTIR) studies have been investigated on the as grown GADP crystals. The FTIR spectrum shows the interaction between ADP and the dopant by the additional peaks which corresponds to the functional groups of Glycine. The standard spectrum statistics of FTIR confirms the presence of all the functional groups. The spectrum for ADP crystals doped with Glycine grown by Rotation and SR methods have similar peaks with slight variation as that of conventional slow evaporation method grown Glycine doped ADP crystals.

Study on defects during Fe3+ doping and annealing in ADP crystals

“…Thermal annealing can effectively mitigate the negative effects induced by Fe 3+ doping, restoring the structural stability of the crystal. 38–41…”

“…Thermal annealing can effectively mitigate the negative effects induced by Fe 3+ doping, restoring the structural stability of the crystal. [38][39][40][41] Fig. 8 presents the ultraviolet-visible-near-infrared diffuse reflectance test results for ADP crystals.…”

Preparation, Features, and Efficiency of Nanocomposite Fertilisers Based on Glauconite and Ammonium Dihydrogen Phosphate

“…Deformation vibrations of phosphate ions are manifested in the FTIR spectra of nanocomposites ( Figure 5 ) prepared via both chemical and mechanochemical techniques. Gentle asymmetric P–O–H oscillations at 906 cm −1 and 1097 cm −1 [ 80 , 81 ] are associated with the adsorbed part of the ADP on the mineral particles, including the edges of crystal basal surfaces. The intensity of these oscillations depends on the amount of ADP, which is connected with glauconite particles.…”