合成条件对V2O5溶胶制备AgVO3准一维纳米材料的影响  

Influence of reaction conditions on synthesizing quasi-one-dimension AgVO3 nanomaterials using VzOs sol

作　　者：麦立强[1] 胡波[1] 金伟[1] 戴英[1] 陈文[1] 

机构地区：[1]武汉理工大学材料复合新技术国家重点实验室材料科学与工程学院,湖北武汉430070

出　　处：《功能材料》2007年第A06期2269-2272,共4页Journal of Functional Materials

基　　金：基金项目：国家自然科学基金资助项目（50672071;50672072）;湖北省自然科学基金资助项目（2006ABA310）;武汉晨光计划资助项目（20065004116-17）

摘　　要：以V2O5溶胶和Ag2O为反应物，用超声波辅助处理和水热反应成功制备了AgVO3准一维纳米材料。采用XRD、SEM等方法对产物的结构进行表征和测试，研究了水热反应温度、时间、搅拌与超声处理等条件对AgVO，一维纳米材料合成的影响。结果表明，得到的AgVO，准一维纳米材料长几到数十微米，直径100-400nm的纳米纤维聚集成束状结构。升高水热反应温度和延长反应时间均有利于AgVO，准一维纳米材料的形成，但当反应时间过长时，晶粒的择优取向生长变弱，产物逐渐生长为微米级的块状结构。搅拌和超声处理使固体反应物Ag2O充分、均匀进入到V2O5溶胶层间，使反应在较低温度下就可以进行。Quasi-one-dimension （Q1D） AgVO3 nanomaterials were successfully prepared by ultrasonic treatment followed by hydrothermal reaction using V2O5 sol. The products were characterized by XRD, SEM and the influences of reaction conditions on synthesis were investigated. The results show that the AgVO3 nanomaterials with the length from several to several tens micrometers form bundles of agglomerated smaller filaments with diameters ranging from 100 to 400 nm. The increases of hydrothermal temperature and time are helpful to formation of Q1D nanostrcutres, but the microscale lamella structure will be attained because of the weakening of anisotropic growth when the time exceed certain values. Stirring and ultrasonic treatment can make Ag2O particles enter the interlayer of V2O5 sol easily and uniformly, resulting in the occurrence of reaction in lower temperature.

关 键 词：AgVO3 准一维纳米材料 V2O5溶胶 合成 

分 类 号：TB34[一般工业技术—材料科学与工程] TB383