W/O型微乳法制备超细片状WO_3的研究  

Preparation of Ultrafine Plate-like WO_3 via W/O Microemulsions Method

作　　者：宋涛[1] 丘泰[1] 沈春英[1] 李志顺[1] 陈小杰[1] 

机构地区：[1]南京工业大学材料科学与工程学院,江苏南京210009

出　　处：《材料科学与工程学报》2007年第1期102-104,94,共4页Journal of Materials Science and Engineering

基　　金：国防新材料重点资助项目(MKPT-05-211)

摘　　要：在TritonX-100/正己醇/环己烷/水微乳液体系中制备了超细片状WO3。XRD谱图表明,超细薄片为三斜相和单斜相混合的WO3晶体。SEM结果表明,制备的WO3为大小均匀的超细片状粒子。BET测试表明,超细片状WO3具有很大的比表面积。考察了两个关键参数ω0和反应物浓度对产物尺寸和形貌的影响。并对TritonX-100/正己醇/环己烷/水微乳液体系制备超细片状WO3的机理进行了初步探讨。Ultrafine plate-like WO3 was synthesized in quaternary W/O microemulsion solution containing TritonX-100, cylcohexane, hexanol and water. XRD patterns show that the ultrafine sheets are the mixture of monoclinic and triclinic WO3 crystals. SEM images show that the as-synthesized samples are homogeneous grain-size ultrafine sheets. BET analysis show that the ultrafine plate-like WO3 has large specific area. Two key variables-ω0 （molar ratio of water to surlactant） and reactant concentration in water were investigated to reveal the size and shape changing of ultrafine plate-like WO3. The mechanics of ultrafine plate-like WO3 prepared in TritonX-100/cylcohexane/exanol/water solution was discussed tentatively.

关 键 词：W/O微乳液 水核直径 超细片状WO3 

分 类 号：TB381[一般工业技术—材料科学与工程]