Time-dependent hydrothermal synthesis and self-evolution mechanism of Cu₂O microcrystals

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• 作者：Hong Gao ; Junying Zhang ; Kejia Liu ; Jing'an Yang ; Mei Wang ; Wenwen Wang
• 关键词：Cu2O microcrystal ; Evolution ; Reduction
• 刊名：Materials Characterization
• 出版年：2012
• 出版时间：September, 2012
• 年：2012
• 卷：71
• 期：Complete
• 页码：112-119
• 全文大小：1117 K

文摘

The successive and circulatory evolution of Cu₂O microcrystal morphology and the reduction from Cu₂O to Cu have both been investigated by carefully adjusting the hydrothermal heating time. The evolutions of the Cu₂O morphology, which were from octahedrons to octahedrons, from plump-hexapods to perfect hexabranches, have been attained for the first time. The results of our work clearly demonstrate the effect of hydrothermal heating time on Cu₂O microcrystal morphology without surfactant or template, with the same initial solution composition, the same solution concentration and the same temperature. In particular, the mechanism of circulatory evolution of Cu₂O microcrystal morphology and that of reduction from Cu₂O to Cu have both been investigated in detail.