温度和pH值对水热法合成InPO4的影响

Orthorhombic InPO4 crystals with different morphologies were synthesized by controlling temperature and pH Value via a mild additive-free hydrothermal method. The effects of temperature and pH Value on the structures and morphologies of the products were investigated. The as-prepared samples were well determined by X-ray diffraction (XRD) and scanning electron microscope (SEM). The results indicated that both hydrothermal temperature and pH value of reaction solution had significant influence on the formation of crystal structures. Acidic condition facilitated the formation of orthorhombic InPO4. Different temperature and pH value of reaction solution resulted in orthorhombic InPO4 with different morphologies. Polyhedral, mushroom-shaped and spherical products can be obtained under pH value 0.5, 1.0 and 1.5 at 160℃. While spherical, slender flower-shaped and short flower-shaped can be obtained under pH value 1.0, 1.5 and 2.0 at 180℃ respectively.