抄録
Some copper(II) phosphates have been hydrothermally synthesized by using CuHPO4·H2O or Cu8(HPO4)2(PO4)4·7H2O as the starting materials and by treating hydrothermal processing under saturated vapor pressure conditions of 150-350°C.
With CuHPO4·H2O as the starting material, when hydrothermal processing in deionized water, octagonal crystals of Cu2(PO4)OH were produced in conditions of 150-300°C, and granular crystals of Cu3(PO4)2 were produced in conditions of 350°C for 24 hours or more. In addition, when the processing solution was made into a 1.0 mol·dm-3H3PO4 aqueous solution, a new product Cu3(PO4)2·H2O was produced in 200°C processing.
When the starting material of Cu8(HPO4)2(PO4)4·7H2O was hydrothermally processed in deionized water, the composition of the hydrothermal product was Cu2(PO4)OH under all processing conditions from 150-350°C. However, when 1.0 mol·dm-3KF aqueous solution was used in the hydrothermal solution, the product became spherulite Cu5(PO5)2(OH)4 under conditions of 200°C for 10 hours or more and under conditions of 250°C for 10-24 hours.
Copper(II) phosphate shows antibacterial properties, and it is more effective against yellow Staphylococcus than against E. coli.
