一维钛纳米材料的SEM和TEM形貌研究  

Morphology Characterization of One-dimensional Titanate Nanomaterials Utilizing SEM and TEM

作　　者：刘小平 李芳清[2] 杜兴胜 王红海 

机构地区：[1]江西省核工业地质局测试研究中心,南昌330001 [2]东华理工大学放射性地质与勘探技术国防重点学科实验室,抚州344000

出　　处：《材料导报（纳米与新材料专辑）》2011年第1期116-118,共3页

基　　金：国防基础科研项目(A3420060146)

摘　　要：在10mol/L氢氧化钠溶液中,以溶胶状纳米TiO_2为钛源,分别于150℃和180℃采用水热法合成了钛纳米晶须和钛纳米线;以金红石型纳米TiO_2为原料在150℃水热合成了钛纳米管。用扫描隧道显微镜(SEM)、电子透射电镜(TEM)对产物进行了表征,结果表明钛酸钠纳米晶须扫描形貌为球形颗粒状,透射形貌为直径1～3nm针尖状,钛纳米线扫描图呈面条状,长度为40μm,宽度为40～200hm,透射观察为实心多层结构,间距为0.8nm。钛纳米管的长度达2μm,管径为10nm。观察发现在纳米晶须中存在向纳米线过渡的中间相,而纳米带中存在钛纳米片,结合相关机理对其形貌结构进行了解释。Titanate nanoribbons and whisker were prepared via hydrothermal treatment of tetrabutyl titanate in a 10mol/L NaOH solution at 180℃ and 150℃, respectively. Titanate nanotubes were synthesized by hydrothermal treatment（150℃ ） using natural rutile sand as the starting materials. The samples were characterized by SEM, TEM, and the results show that titanate whiskers are spherical-granular-shape in the SEM and tip-like with diameters of 1-3nm in the TEM; and titanate nanowires are multi-layered noodles shape with the width of 40-200nm, the lengths of 40μm and the space between layers of 0. 8nm. Titanate nanotubes are observed with the diameters of 20nm and the lengths of 2/μn. Transitional products are obtained in the titanate whisker, and titanate nanoplates are observed in the titanate nanowire. Their morphology structures combined with the relevant mechanism were demonstrated.

关 键 词：水热法 钛 纳米材料 形貌 

分 类 号：TQ163.4[化学工程—高温制品工业]