Nano Lead Tungstate Preparation by Precipitation Method
Lead tungstate is a kind of tungstate . It has attracted extensive attention because of its luminescent properties and radiation resistance. The results show that the lead tungstate crystal can exhibit blue, green and red absorption at a certain wavelength, and the requirement of attenuation time and radiation damage is far beyond the requirement of light yield. The main preparation methods of lead tungstate are solid phase method and liquid phase method. But for the preparation of nano lead tungstate, liquid phase method is usually adopted, and precipitation method is one of liquid phase method. The starting materials prepared by precipitation of nano lead tungstate particles with 99% purity of lead nitrate and 99.5% sodium tungstate , with deionized water as solvent, polyethylene glycol (PEG 200) as a dispersant to prepare nano lead tungstate powder. According to the chemical dosage ratio of lead nitr...