Formation mechanism of apex-truncated octahedral Cu2Omicrocrystal
Formation mechanism of apex-truncated octahedral Cu2Omicrocrystal
复制标题
截顶八面体Cu2O微晶的形成机制
DOI：
10.1039/c6ce01792d
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发表时间：
2016
期刊：
影响因子：
3.1
通讯作者：
Qiming Liu
中科院分区：
文献类型：
--
作者：
Sanjun Yang;Qiming Liu
以CuSO 4、葡萄糖和少量NaOH为原料，采用典型的液相还原法合成了截角八面体Cu 2 O微晶。通过对反应过程的研究，发现Cu_2O微晶的生长遵循溶胶-凝胶生长模型，而不是Lamer成核-扩散模型。OH-和SO 42-在八面体形貌形成中所起的作用通过分离它们并分别研究相应的产物来揭示。我们在另一个实验中使用了PVP（聚乙烯吡咯烷酮），以表明使用这种方法也可以更清楚地证明有机表面活性剂对晶体习性的影响。
Corner-truncated octahedral Cu2O microcrystal was synthesized by a typical solution phase reduction method with CuSO4, glucose, and a small amount of NaOH. Researching into the reaction process, we found that the Cu2O microcrystal grew following the sol–gel growth model, instead of Lamer nucleation–diffusion model. The roles that OH− and SO42− played in the formation of the octahedral morphology were revealed by separating them and investigating the corresponding products, respectively. We used PVP (polyvinylpyrrolidone) in another experiment to show that the influence of the organic surfactant on the crystal habit may also be demonstrated more clearly using this method.