TY - JOUR

T1 - Design of Pb1-xSrxF2 hollow crystals with gas-solution interfacial reactions

AU - Гулина, Лариса Борисовна

AU - Касаткин, Игорь Алексеевич

AU - Толстой, Валерий Павлович

AU - Данилов, Денис Васильевич

AU - Платонова, Наталия Владимировна

AU - Мурин, Игорь Васильевич

PY - 2023/11/15

Y1 - 2023/11/15

N2 - Porous or hollow crystals have attracted considerable interest due to their unique properties and outstanding performance in various applications. In this study, hollow Pb1-xSrxF2 crystals have been successfully fabricated via controlled precipitation-dissolution at the liquid-gas interface. As a result of the reaction on the surface of a solution mixture of Pb(CH3COO)2 and Sr(CH3COO)2 under the action of gaseous HF, a film of Pb1 xSrxF2 crystals with a fluorite-type structure was formed. Placing the film on the water surface resulted in selective dissolution and formation of hollow crystals, associated with a relative increase in the overall Sr content in the Pb1-xSrxF2 solid solution. By adjusting the crystallization conditions and the dissolution time it was possible to obtain hollow crystals with a wall thickness of 20-40 nm, membrane films with ordered through holes, or microstructures with flower-like morphology. The Gas-Solution Interface Technique used in this work can potentially be utilized to synthesize other metal fluorides with tunable porous morphology.

AB - Porous or hollow crystals have attracted considerable interest due to their unique properties and outstanding performance in various applications. In this study, hollow Pb1-xSrxF2 crystals have been successfully fabricated via controlled precipitation-dissolution at the liquid-gas interface. As a result of the reaction on the surface of a solution mixture of Pb(CH3COO)2 and Sr(CH3COO)2 under the action of gaseous HF, a film of Pb1 xSrxF2 crystals with a fluorite-type structure was formed. Placing the film on the water surface resulted in selective dissolution and formation of hollow crystals, associated with a relative increase in the overall Sr content in the Pb1-xSrxF2 solid solution. By adjusting the crystallization conditions and the dissolution time it was possible to obtain hollow crystals with a wall thickness of 20-40 nm, membrane films with ordered through holes, or microstructures with flower-like morphology. The Gas-Solution Interface Technique used in this work can potentially be utilized to synthesize other metal fluorides with tunable porous morphology.

UR - https://www.mendeley.com/catalogue/0e991300-3f81-3179-844a-27a8d76c47d5/

U2 - 10.1039/d3ce00943b

DO - 10.1039/d3ce00943b

M3 - Article

JO - CrystEngComm

JF - CrystEngComm

SN - 1466-8033

ER -