Simple synthesis of luminescent CdSe quantum dots from ascorbic acid and selenium dioxide |
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| Authors: | Yilin Wang Meihua Yu Kun Yang Jianping Lu Linqing Chen |
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| Affiliation: | 1. Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, Guangxi University, Nanning, China;2. Ministry–Province Jointly‐Constructed Cultivation Base for the State Key Laboratory of Processing Non‐Ferrous Metal and Featured Materials, Guangxi Zhuang Autonomous Region, Guangxi University, Nanning, China |
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| Abstract: | A simple, low‐cost and convenient method was developed for the synthesis of highly luminescent CdSe quantum dots (QDs) in an aqueous medium. Compared with previous methods, this synthesis was carried out in one pot using ascorbic acid (C6H8O6) to replace NaBH4 or N2H4 · H2O as a reductant, and selenium dioxide to replace selenium or its other hazardous, expensive and unstable compounds as a precursor. The mechanism of CdSe QDs formation was elucidated. The influence of various experimental variables, including refluxing time, Cd/MSA and Cd/Se molar ratios, on the luminescent properties of the QDs were systematically investigated. X‐Ray powder diffraction and transmission electron microscopy characterization indicated that the QDs had a pure cubic zinc‐blended structure with a spherical shape. Copyright © 2015 John Wiley & Sons, Ltd. |
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| Keywords: | cadmium selenium nanocrystalline materials selenium dioxide luminescence |
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