Hydrothermal synthesis of aluminum-doped zincophosphate large single crystal with different morphology

Abstract

Large single crystals of Aluminum-zincohposphate (AlZnPO4-DFT) with different morphology have been hydrothermally synthesized by using ethylenediamine (EDA) as structure-directing agent. The effects of crystallization conditions and gel compositions on products were investigated in detail. The pure phase with DFT structure could be obtained at 170 °C, while the competitive phase would appear when the crystallization temperature rises to 190 °C. The quality of AlZnPO4-DFT crystals enhances firstly and then deteriorates with the extension of crystallization duration from 20 h to 50 h. Moreover, the gel composition not only affects the size of the product, but also affects the morphology and quality of the product.