利用醋酸锌和醋酸镁为原料,无水乙醇为溶剂,草酸为沉淀剂,通过共沉淀法和后续热处理实现多壁碳纳米管表面负载镁掺杂氧化锌纳米颗粒,并使用X射线衍射仪、扫描电子显微镜、透射电子显微镜和紫外吸收光度计研究复合材料的形貌和光学性能.电子显微镜结果表明,在450℃热处理下,多壁碳纳米管表面能够均匀地负载镁掺杂氧化锌纳米颗粒,其颗粒粒径大约为10～20nm.紫外吸收光谱结果说明,镁掺杂显著地提高多壁碳纳米管/氧化锌复合材料的紫外吸收性能,而且其紫外吸收峰向短波方向蓝移达22nm.
MWNTs/Mg-doped ZnO composite were synthesized by co-deposition method and heat treatment,using zinc acetate and magnesium acetate as raw material,anhydrous ethanol as solvent and oxalic acid as precipitator.The images and optical property of MWNTs/Mg-doped ZnO composite were investigated by X-ray diffraction (XRD),scanning electron microscopy (SEM),transmission electron microscopy (TEM),and ultraviolet-visible (UV) absorption spectrophotometer.The experimental results of electron microscopy show that after treatment at 450℃,the surface of MWNTs is supported by Mg-doped ZnO nanoparticles with sizes in the range of 10-20nm.The UV absorption spectroscopy reveals that Mg-doping can improve the UV absorption ability of MWNTs/ZnO composite,and the maximum blueshift reach 22nm.
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