β-nickel hydroxide nanosheets and their thermal decomposition to nickel oxide nanosheets
β-nickel hydroxide nanosheets and their thermal decomposition to nickel oxide nanosheets
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DOI：
10.1021/jp037513n
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发表时间：
2004-03-18
影响因子：
3.3
通讯作者：
Hu, XL
中科院分区：
文献类型：
--
作者：
Liang, ZH;Zhu, YJ;Hu, XL
以乙酸镍为镍源，氨水为碱和络合剂，在200 ℃水热条件下成功合成了具有六方结构的单晶β-氢氧化镍（β-Ni（OH）（2））纳米片粉末。β-Ni（OH）（2）纳米片状粉末的产率高于92.4%。该方法简单，成本低，适合于大规模生产单晶β-Ni（OH）（2）纳米片粉末。以β-Ni（OH）（2）单晶纳米片为前驱体，采用热分解法在400 ℃下反应2 h制备了NiO单晶纳米片。β-Ni（OH）（2）在热分解成NiO后保持片状。采用X射线粉末衍射（XRD）、透射电子显微镜（TEM）、差示扫描量热分析（DSC）和热重分析（TG）对产物进行了表征。
Powders of single-crystalline beta-nickel hydroxide (beta-Ni(OH)(2)) nanosheets with the hexagonal structure have been successfully synthesized by the hydrothermal method at 200 degreesC using nickel acetate as the nickel source and aqueous ammonia as both an alkaline and complexing reagent. The yields of beta-Ni(OH)(2) nanosheet powders were higher than 92.4%. This method is simple and low-cost for large-scale production of powders of single-crystalline beta-Ni(OH)(2) nanosheets. Single-crystalline nickel oxide (NiO) nanosheets have been synthesized by thermal decomposition method at 400 degreesC for 2 h using single-crystalline beta-Ni(OH)(2) nanosheets as the precursor. The sheet shape of beta-Ni(OH)(2) was sustained after thermal decomposition to NiO. The as-prepared products were characterized by X-ray powder diffraction (XRD), transmission electron microscopy (TEM), differential scanning calorimetric analysis (DSC), and thermogravimetric analysis (TG).