New Synthesis Strategies for Luminescent YVO4:Eu and EuVO4 Nanoparticles with H2O2 Selective Sensing Properties

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• 作者：Natacha Du茅e ; Chrystel Ambard ; Franck Pereira ; David Portehault ; Bruno Viana ; Karine Vall茅 ; Denis Autissier ; Cl茅ment Sanchez
• 刊名：Chemistry of Materials
• 出版年：2015
• 出版时间：August 11, 2015
• 年：2015
• 卷：27
• 期：15
• 页码：5198-5205
• 全文大小：536K
• ISSN：1520-5002

文摘

Nowadays, because of safety demands, the controlled design of efficient and selective sensors for hydrogen peroxide is paramount. Therefore, we develop herein new strategies of aqueous synthesis of crystalline YVO₄:Eu and EuVO₄ nanoparticles based on a rigorous control of the pH and of the nucleation step via microwave heating. These routes allow a precise control of composition, nanostructure, and surface states of the resulting luminescent nanoparticles that are structurally and optically characterized via a large set of modern techniques. Moreover, these nanoparticles exhibit reproducible optical responses that are highly selective to hydrogen peroxide and present excellent detection thresholds as low as 0.05 ppm in solution. These remarkable performances allow the design of a new family of H₂O₂ sensors, which surpass state-of-the-art inorganic optical sensors in liquid phase detection tests.