摘要
以硝酸镁、硼酸、柠檬酸为原料,利用溶胶-凝胶法及不同温度后续煅烧制备了硼酸镁(MgB4O7和Mg2B2O5)纳米棒．用X射线衍射(XRD)分析了纳米棒的结构,用扫描电子显微镜(SEM)和透射电子显微镜(TEM)观察了纳米棒的形貌．实验结果表明, 750℃煅烧产物为MgB4O7纳米棒,950℃煅烧产物为Mg2B2O5纳米棒,纳米棒的径长比可以通过调节原料硝酸镁和硼酸的比例来控制．用自催化机理解释了硼酸镁纳米棒的生长机理．
The magnesium borate （MgB4O7 and Mg2B2O5） nanorods were fabricated with magnesium nitrate, boric acid and citric acid as the starting reagents by the sol-gel method. The structures and morphologies of the nanorods were characterized by X-ray diffraction （XRD）, scanning electron microscope （SEM） and transmission electron microscope （TEM）. The results show that the products synthesized by calcining were MgB4O7 at 750℃ and Mg2B2O5 at 950℃. The ratios of diameter and length of the nanorods can be controlled by adjusting the proportion of Mg（NO3）2 and H3BO3. The self-catalytic mechanism was used to explain the growth of the magnesium borate nanorods.
出处
《无机材料学报》
SCIE
EI
CAS
CSCD
北大核心
2006年第4期833-837,共5页
Journal of Inorganic Materials
基金
国家自然科学基金(50272057
60225010)
