水热法合成β型氢氧化镍纳米片及其生长机理  

Synthesis of β-Ni(OH)_2 nanoplates by hydrothermal method and formation mechanism thereof

作　　者：傅小明[1] 孙浩[1] 王幸福[1] 刘照文[1] 

机构地区：[1]宿迁学院三系,江苏宿迁223800

出　　处：《无机盐工业》2011年第11期34-36,共3页Inorganic Chemicals Industry

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)

摘　　要：以硝酸镍为镍源,浓氨水为沉淀剂,水热法合成了花瓣状β型氢氧化镍球和β型氢氧化镍纳米片,其合成方法简单易行。采用XRD和SEM分别对合成的样品进行物相和形貌分析。结果表明:在相同的pH和反应时间条件下,低温下有利于合成花瓣状β型氢氧化镍球,高温下有利于合成β型氢氧化镍纳米片。即当反应时间为48.0 h、pH=9.0时,180℃下合成了花瓣状β型氢氧化镍球;240℃下合成了β型氢氧化镍纳米片。通过考察水热条件对产物形貌的影响,探讨了花瓣状β型氢氧化镍球和β型氢氧化镍纳米片的形成机制。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 synthesis method was easy and simple.Phase structure and morphology of the samples were characterized by XRD and SEM respectively.Results showed that under the same conditions of pH and reaction time,the low temperature was propitious to synthesize β-Ni（OH）2 flower-like spheres and high temperature was in favor of synthesizing β-Ni（OH）2 nanoplates.Namely,β-Ni（OH）2 flower-like spheres were obtained at 180 ℃ and β-Ni（OH）2 nanoplates were prepared at 240 ℃ both for 48.0 h with pH=9.0.Formation mechanisms of flower-like spheres and nanoplates were explored through observing influence of the hydrothermal conditions on the morpho-logies of the samples.

关 键 词：β型氢氧化镍纳米片 硝酸镍 浓氨水 水热法 

分 类 号：TQ138.13[化学工程—无机化工]