Effects of ammonium citrate additive on crystal morphology of aluminum phosphate ammonium taranakite

Influence of the pH and ageing time on the acid aluminum phosphate synthesized by precipitation

“…Some works report the analogous ammonium-taranakite. 36,37 But the main diffraction peak of taranakite phase appears at 6u (2h) and corresponds to the (600) phosphate plates stacking plane. This peak has not been observed in this phosphate spectrum.…”

“…Hexagonal morphology is typical of taranakite structure. 36,37 Both phosphates synthesized at pH 3 present low specific surface values. An Ss decrease from 7 to 2 m 2 g 21 is observed with increasing ageing time.…”

Synthesis and formation mechanisms of morphology-controllable indium-containing precursors and optical properties of the derived In2O3 particles

“…The longer the reaction time, the lower the concentration of urea in the reaction system, and the lower the isotropic interfacial energy. 41 Thus, the crystals grew into hexagonal plates instead of round disks when the reaction time reached 120 min. To confirm the effects of urea, ceteris paribus, a comparative experiment was carried out where the urea concentration was 0.06 M compared to that of 9 M for sample S3.…”

“…It can be imagined that the precursor prefers to show hexagonal plates under unconstrained conditions. Based on the Langmuir adsorption model developed by Amjad and Maniatis, 41 urea can be rapidly adsorbed at the active growth sites, e.g., at the edge angle of the crystal. The higher the urea concentration, the higher the isotropic interfacial energy generated and the smoother the edge of the disk grew.…”

Flame retardance and origin of bismaleimide resin composites with green and efficient aluminum phosphates

“…hAP was synthesized using the homogeneous precipitation method through the mechanism shown in Scheme . To confirm the chemical composition, FTIR and XRD techniques were used.…”