Morphological Evolution from SnO2 Quantum Dots to Quantum Chains inside Channels of Mesoporous Spheres

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• 作者：Feng Gu ; Xiang Ren ; Jian Zhang ; Wei Shao ; Guangjian Huang ; Chunzhong Li
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2011
• 出版时间：November 16, 2011
• 年：2011
• 卷：50
• 期：22
• 页码：12542-12547
• 全文大小：1035K
• 年卷期：v.50,no.22(November 16, 2011)
• ISSN：1520-5045

文摘

Morphological evolution from SnO₂ quantum dots (QDs) to quantum chains (QCs) confined in channels of mesoporous silica (MS) has been studied systematically in this work by varying the nuclei quantity deposited on the channels鈥?inner surface under hydrothermal conditions. Decreasing the MS amounts could influence the nuclei quantity and the subsequent crystal growth as well as the assembly process to form QCs by oriented attachment inside the channels. It is interesting to find that the evolution of SnO₂ QDs鈫扱Cs systems would induce the variation of strain type tolerated, simultaneously, from tensile to compressive strain, and also exhibit morphology-dependent photoluminescence properties.