摘要
以钨酸钠为原料,硫酸钾为辅助盐,在强酸性反应体系通过水热法合成了WO3纳米棒。利用XRD、SEM、TEM和SAED对试样进行分析,研究结果表明:在水热法体系中合成WO3纳米棒时,随着pH值的增加、反应温度的升高和反应时间的延长,它们都有利于合成WO3纳米棒。在pH值为1.5、反应温度为240℃和反应时间72.0h下合成直径小于100nm的晶态WO3纳米棒,此WO3纳米棒径向分布较均匀。对不同条件下水热法合成的WO3进行紫外可见光的吸收光谱分析可得,随着pH值的增加、反应温度的升高和反应时间的延长,获得的WO3的光吸收能力逐渐是增加的。特别是WO3纳米棒具有良好的光吸收能力。
WO3 nanorods are synthesized with sodium tungstate as tungsten source and potassium sulphate as supplementary salt in acid by the hydrothermal method.The samples are characterized by XRD,SEM,TEM and SAED.With the increment of the pH value,the reaction temperature and the reaction time,WO3 nanorods are obtained easily by the hydrothermal method.Crystal WO3 nanorods of less than 100nm in the diameter at 240℃ for 72.0h with pH=1.5 by the hydrothermal method.The crystal WO3 nanorods are homogeneous in the diameter.The samples are characterized by UV-VIS,with the increment of the pH value,the reaction time and the reaction temperature,the absorbent power of the light of WO3 synthesized in the system of strong acid by the hydrothermal method enhance gradually.Especially,Crystal WO3 nanorods take on the good absorbent power of the light.
出处
《中国陶瓷》
CAS
CSCD
北大核心
2011年第3期12-15,共4页
China Ceramics
基金
宿迁学院高级人才启动基金(SQCGJ2010002)
江苏省大学生实践创新训练计划项目(2010SSJ02)
宿迁市指导性科技计划项目(ZD2010010)
关键词
钨酸钠
水热法
WO3纳米棒
光敏特性
Sodium tungstate
Hydrothermal method
WO3 nanorod
Light-sensitive character
