Preparation of hemihydrate gypsum with controllable morphology in Glycerol-NaCl-Water solutions with maleic acid

Effect of mixed cation acetate electrolyte on synthesis of α‐hemihydrate gypsum from phosphogypsum

“…The most commonly used electrolytes are salt solutions of NaCl, KCl, CaCl 2 , MgCl 2 , NaSO 4 , and so on. 13,[16][17][18] For the selection of cations, Na + or Ca 2+ is generally used. In an Na + and Cl − /SO 4 2− electrolyte solution, the transformation of PG toward whisker-like product is quick.…”

“…Different electrolyte solutions play different roles in target crystal formation. The most commonly used electrolytes are salt solutions of NaCl, KCl, CaCl 2 , MgCl 2 , NaSO 4 , and so on 13,16–18 . For the selection of cations, Na + or Ca 2+ is generally used.…”

Mussel-inspired dynamic facet-selective capping approach to highly uniform α-calcium sulfate hemihydrate crystals

“…with highly uniform size and desired aspect ratio via a controllable growth mechanism remains still a great challenge. [9][10][11] The role of additives is to alter the growth habit of a-HH crystals, and based on the results from the a-HH crystal models, 12 macroscopic spectroscopic analysis and molecular simulations, 13 it was inferred that the additives selectively adsorb on side or top facets of crystal seeds and prevent further crystal growth in the direction, leading to differently shaped crystals. The inhibition of crystal growth along certain facets by the selective adsorption of biogenic species and bio-inspired additives is a common strategy adopted in natural and articial mineralization to control the crystal morphology.…”

“…Despite these efforts, however, to obtain excellent α-HH crystals with highly uniform size and desired aspect ratio via a controllable growth mechanism remains still a great challenge. 9–11…”