浓海水制备硼酸镁纳米棒的表征  

Characterization of magnesium borate(Mg_2B_2O_5)nanorods using concentrated seawater

作　　者：王俐聪[1,2] 王涛[2] 王亮[2] 董泽亮[2] 王玉琪[2] 黄西平[2] 刘源[1] 

机构地区：[1]天津大学化工学院,天津300072 [2]国家海洋局天津海水淡化与综合利用研究所,天津300192

出　　处：《化工新型材料》2015年第4期105-106,110,共3页New Chemical Materials

基　　金：中央级公益性科研院所基本科研业务费专项资金项目(G2008-11)

摘　　要：以浓海水、硼酸、氢氧化钠为原料,采用三元助熔剂工艺制备了硼酸镁纳米棒。应用X射线衍射(XRD)、X射线光电子能谱(XPS)、扫描电镜(SEM)以及高分辨透射电镜(HRTEM)对制备的产品进行了表征。XRD物相分析结果表明制备的产品为三斜结构硼酸镁(Mg2B2O5)。XPS表明制备的产品中Mg、B、O的摩尔比为1∶1.02∶2.51,且价态分别为+2,+3,-2,与Mg2B2O5化学计量比以及价态一致。SEM和HRTEM显微图像表明合成的产品为纳米棒,最后对生长过程进行了初步探讨。Magnesium borate （Mg2B2O5 ） nanorods was successfully synthesized by ternary-fluxes method using concentrated seawater,H3BO3 and sodium hydrate as raw materials. The as-prepared product was characterized by X-ray diffraction （XRD）, X-ray photoelectron spectroscopy （XPS）, scanning electron microscopy （SEM） and high resolution transmission electron microscope （HRTEM）. The results showed that the sample had triclinic structure. XPS results con- firmed that the chemical valence of Mg,B,O was 4-2,-t-3,-2 and Molar ratio was 1 ： 1.02 ： 2.51,this agreed with the stoichiometric composition of Mg2B2O5. SEM and HRTEM showed that the sample was consist of nanorods structure. Finally, The growth process was briefly discussed.

关 键 词：三元助熔剂 纳米棒 生长过程 

分 类 号：TB383.1[一般工业技术—材料科学与工程] TQ132.2[化学工程—无机化工]