生物模板法制备纳米氧化镍

Biosynthesis of NiO with Nano Structure Form Biological Templates

采用溶胶-凝胶法结合生物模板法制备纳米氧化镍。通过X射线衍射(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)等表征手段研究热处理温度、热处理时间、不同材料配比对产物形貌、粒径的影响。结果表明:反应配比[n(Ni2+)/n(柠檬酸)]为1:1,焙烧温度为500℃,焙烧时间为2 h,在此条件下得到了呈球形,分散性好,纯度高的立方晶系的纳米氧化镍。

NiO powder was synthesized by sol-gel and biologicao templates. The products were charactenzed by scanning electron microscopy（SEM） ,conventional TEM （TEM） and X-ray diffraction （XRD）. The effects of heattreatment temperature, treatment time and material ratio on particle shape and size. The NiO prepared in the optimum conditions： [ n （ Ni2 ＋ ）/n（AC） ] = 1 ： 1,500℃ heat-treatment for 2h. The NiO nanoparticles prepared under the optimum conditions were spherical in shape and well dispersed; they have high purity and a fine crystal phase of cubic syngony.