火焰辅助的喷雾热分解法制备纳米氧化钇

摘要

@@ INTRODUCTIONrnNanoparticle synthesis in flame is an attractive and effective method [1]. Nanoparticle can be synthesized in flame by either gas-to-particle conversion or particle-to-particle conversion [2-4]. Since precursors in gas-to-particle conversion must be gases, it is required that the corresponded liquid precursors have high volatility. In comparison with gas-to-particle conversion, precursors in particle-to-particle conversion are less limited, varying from flammable organometallic solutions to various aqueous metal salt solutions such as metal chlorides, metal nitrates and metal acetates. The precursor material is atomized and carried by a gas into the flame. Generally speaking organometallic compounds are more expensive while aqueous metal salt solutions are readily available. Therefore flame spray pyrolysis using aqueous metal salt solutions as precursors has greater advantages.