TiN纳米粉体低温气-固相反应合成金红石相TiO_2  

Synthesis of Rutile TiO_2 Through Gas-solid Phase Reaction Using TiN Nanopowders at Low Tempareture

作　　者：陈艳娟[1] 芦永红[1] 徐海波[1] 

机构地区：[1]中国海洋大学海洋化学理论与工程技术教育部重点实验室,山东青岛266100

出　　处：《材料开发与应用》2014年第3期43-47,共5页Development and Application of Materials

基　　金：山东省博士基金(BS2010NJ018;BS2011NJ019);中央高校基本科研业务费专项资金(201022006)

摘　　要：研究了浸渍预处理前后TiN纳米粉体的气-固相反应,分析了浸渍液对TiN纳米粉体择优生成金红石相TiO2的作用。结果表明,在氧化温度为350-550℃时,TiN纳米粉体直接氧化生成以锐钛矿相为主的TiO2,而经过盐酸-正丁醇混合液浸渍预处理后,在380℃空气中,TiN纳米粉体氧化生成以金红石相为主的TiO2,XRD和TEM分析表明可以得到粒径16 nm的棒状金红石相TiO2纳米粉体。盐酸是TiN纳米粉体低温择优氧化生成金红石相TiO2的根本原因,而正丁醇主要起抑制产物纳米TiO2的团聚作用。The gas-solid phase reactions of TiN nanopowders both with and without impregnation pretreatment were studied. Effects of n-butanol and hydrochloric acid on the formation of rutile TiO2 were analyzed. TiN nanopowders without impregnation are oxidized into anatase TiO2 at 350 - 550℃. Whereas rutile TiO2 are obtained from TiN nanopowders impregnated with mixed solution of n-butanol and hydrochloric acid in air at 380℃. The result of XRD and TEM images indicate that rutile TiO2 are rod-like with 16nm in radial direction. It shows that hydrochloric acid acts as the fundamental substance for rutile TiO2 from TiN nanopowders at low-temperature,while n-butanol mainly inhibits the agglomeration of TiO2.

关 键 词：TiN纳米粉体 浸渍-热分解法 金红石相TiO2 气-固相反应 

分 类 号：O614.41[理学—无机化学]