反相微乳法制备纳米V2O5

摘要

采用十六烷基三甲基溴化铵(CTAB)/正丁醇/正辛烷/水溶液微乳体系成功制备了纳米V2O5.先采用反相微乳法分别制备碱性偏钒酸铵微乳液和稀硫酸单相微乳液,再将两种微乳液混合得到V2O5前驱物,经陈化、洗涤、干燥、焙烧得到纳米V2O5.通过测定电导率分析了微乳体系的稳定性,采用FTIR、XRD、TEM对纳米V2O5的结构、成分、晶形、粒径等进行了表征.结果表明,采用反相微乳法制备的纳米V2O5为球形、分散性较好、颗粒粒径为6～20nm.%V2O5 Nanoparticles was successfully prepared by reverse microemulsion composed of cetyltrime-thylammonium bromide (CTAB)/1-butanol/l-octane/water. Ammonium metavanadate alkaline microemulsion and sulfuric acid configurable single phase microemulsion were prepared through reverse microemulsion method,and then two sets of microemulsion was mixed. After precursors synthesized in a W/O reverse microemulsion were washed,dryed and calcined, the V2O5 nanoparticles were obtained. The stability of microemulsion was investigated by measuring the conductivity,and the structure,composition,crystal form,morphologies and size of the V2O5 nanoparticles were characterized by FTIR,XRD,TEM. V2O5 Nanoparticles with spherical grains, good monodispersity and 6~20 nm of size was obtained by reverse microemulsion method.