超音速气流粉碎下NiO纳米棒的低温固相制备  

Preparation of NiO Nanorods by a Solid State Reaction at Low Temperatures under an Ultrasonic Airflow

作　　者：刘兰[1] 聂福德[1] 曾贵玉[1] 谯志强[1] 

机构地区：[1]中国工程物理研究院化工材料研究所,绵阳621900

出　　处：《应用化学》2010年第4期454-457,共4页Chinese Journal of Applied Chemistry

基　　金：中国工程物理研究院军民两用基金(JM200602)资助项目

摘　　要：采用超音速气流粉碎技术低温固相合成NiO纳米颗粒前驱体,并通过在650~900℃下,NaCl熔盐介质中对前驱体进行焙烧,制备得到NiO纳米棒。采用XRD、SEM、TEM测试技术对NiO前驱体、NiO纳米棒的结构和形貌进行了表征。结果表明,前驱体为直径约25 nm球形颗粒,随着焙烧温度升高,逐渐生成直径为300 nm,长度约十几微米的纳米棒。反应过程中熔盐介质是纳米颗粒前驱体生长的关键因素。The nanoparticles of NiO precursor were prepared by a low temperature solid state reaction under ultrasonic airflow.The precursor was converted into NiO nanorods after annealing at 650~900 ℃ in a molten salt medium.The structure and morphology of NiO precursor and nanorods were investigated by XRD,SEM and TEM technologies.The results indicated that the prepared precursor was spheric particles with a diameter of about 25 nm,and grew gradually to NiO nanorods with a diameter of about 300 nm and a length of several micrometers along with rising calcinging temperatures.The key factor in the process for the grwoth of NiO nanorods is the molten salt medium.

关 键 词：超音速气流粉碎 NiO纳米棒 低温固相 熔盐介质 

分 类 号：O611.4[理学—无机化学]