以氯化锌做为原料,氢氧化钠为矿化剂,在温度180℃、反应15h的条件下,利用水热法制备ZnO粉体.通过X射线衍射、扫描电镜和光致发光谱表征其晶体结构、微观形貌和光学性能.表征结果表明,随着反应溶液pH值的增大,ZnO的微观结构逐渐由一维棒状变成三维花状.对三维花状ZnO的形成机理进行了讨论,研究了pH对ZnO粉体的光致发光的影响.
Zinc oxide powders were hydrothermally synthesized at 180℃ for 15h by using ZnCl_2 as starting materials,NaOH as a mineralizer.The crystal structure,morphology and optical property of the final products were characterized by X-ray diffraction,scanning electron microscopy and photoluminescence spectra.The results show that ZnO morphology change from one-dimension rods to three-dimension flowers with increasing pH from 9 to 14.The formation mechanism of the ZnO flowers was proposed and the optical properties of the final products synthesized in different pH were discussed.
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