Synthesis of Copper(I) Oxide Particles with Variable Color: Demonstrating Size-Dependent Optical Properties for High School Students

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• 作者：Natalia E. Markina ; Mikhail V. Pozharov ; Alexey V. Markin
• 刊名：Journal of Chemical Education
• 出版年：2016
• 出版时间：April 12, 2016
• 年：2016
• 卷：93
• 期：4
• 页码：704-707
• 全文大小：256K
• 年卷期：0
• ISSN：1938-1328

文摘

We suggest the use of a simple and cheap synthesis of micro- and nanosized copper(I) oxide particles with variable color as a demonstration of size-dependent optical properties of semiconductors for high school students. The synthesis of Cu₂O particles is performed by reducing alkaline copper(II)–citrate complex (Benedict’s reagent) with glucose. Significant color and size changes of Cu₂O particles at various reaction conditions are observed and discussed. Proposed demonstration is very useful for introducing students (including undergraduate students) to size-dependent optical properties of semiconductors and principles of synthesis of nanosized objects.