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用油酸作表面修饰剂,利用水热法制备了钨酸铅(PbWO4)纳米晶.研究了油酸用量对PbWO4纳米晶修饰效果的影响,并利用X射线衍射仪、扫描电子显微镜、红外光谱仪和接触角测试仪等对产物进行了表征.结果表明,修饰PbWO4纳米晶的油酸最佳用量为6%;样品结晶良好,平均粒径为32nm;表面修饰使得油酸分子中的-COOH和PbWO4纳米晶之间存在化学键结合;油酸修饰PbWO4纳米晶分散性好,无团聚现象;对水的润湿接触角达153.08°,具有超疏水性能,在有机溶剂中具有良好的分散稳定性.

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