摘要
以硝酸镍为镍源,浓氨水为沉淀剂,以水热法合成花瓣状β-Ni(OH2)球和β-Ni(OH)2纳米片,方法简单易行。利用X射线衍射(XRD)和热场发射扫描电子显微镜(SEM)分别对合成试样进行物相和形貌分析,结果表明,在pH为9.0、反应时间为48.0h条件下,低温(180℃)有利于合成花瓣状β-Ni(OH)2球,高温(240℃)有利于合成β-Ni(OH)2纳米片。通过考察水热条件对产物形貌的影响,探讨了花瓣状β-Ni(OH2)球和β-Ni(OH2)纳米片的形成机制。
β-Ni（OH）2 flower-like spheres and nanoplates were synthesized by hydrothermal method with strong ammonia water as precipitator and nickel nitrate as nickel source.The phase structure and morphology were analyzed by XRD and SEM.The results showed that under the same conditions of pH value（9.0） and reaction time（48.0 h）,the low temperature（108 ℃）was beneficial to synthesize β-Ni（OH）2 flower-like spheres,and high temperature（240 ℃） was in favour of synthesizing β-Ni（OH）2 nanoplates.The formation mechanism was discussed through observing the influence of conditions of hydrothermal method on morphologies of samples.
出处
《湿法冶金》
CAS
北大核心
2012年第1期9-12,共4页
Hydrometallurgy of China
基金
宿迁学院高级人才启动基金资助项目(SQCGJ2010002)
江苏省大学生实践创新训练计划资助项目(2010SSJ02)
关键词
Β-NI(OH)2
硝酸镍
浓氨水
水热法
合成
成长
β-Ni（OH）2
nickel nitrate
strong ammonia water
hydrothermal method
synthesis
growing
