采用反相微乳液法和溶剂热法制备了SrWO_4纳米材料,探讨了反应条件对产物的结构和形貌的影响,采用X射线衍射(XRD)、场发射扫描电镜(FESEM)和光致发光(PL)谱等手段表征了产物结构、形貌,测试了发光性能.结果表明,采用微乳液法制备SrWO_4材料时,反应时间和表面活性剂浓度是影响SrWO_4产物形貌的重要因素,通过改变这2个因素得到了不同形貌的SrWO_4纳米材料,如菜花状、树杈状、花束状等.而溶剂热法只得到SrWO_4纳米颗粒.室温PL谱表明,所制备的SrWO_4材料具有较强的绿光(400～450nm)发射光谱.
SrWO_4 nanomaterials with different morphologies are prepared successfully via inverse microemulsion and microemulsion-assisted solvothermal methods.Effects of reaction conditions on the structure and morphologies of SrWO_4 samples are investigated.The structure,morphology and photoluminescence property of the SrWO_4 samples are characterized with XRD,FESEM and PL spectra.The results show that reaction time and surfactant concentration in microemulsion procedure play important roles in the preparation of SrWO_4 samples with different morphologies.Cauliflower-like,tree branch-like and flower bundle-like of SrWO_4 samples are obtained by changing the reaction time and surfactant concentration.Only SrWO_4 nanoparticles are achieved via the solvothermal method.The room temperature PL spectra shows that the SrWO_4 samples emit stronger green spectra in about 400～450nm.
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