Surface-anchored CdS@Ag₃PO₄ nanocomposite with efficient visible light photocatalytic activity

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• 作者：Yun Kyung Jo ; In Young Kim ; Jang Mee Lee ; Sahn Nahm ; Ji-Won Choi ; Seong-Ju Hwang
• 关键词：Nanoparticles ; Nanocomposites ; Particles ; Nanosize ; Colloidal processing
• 刊名：Materials Letters
• 出版年：1 January, 2014
• 年：2014
• 卷：114
• 期：Complete
• 页码：152-155
• 全文大小：647 K

文摘

The surface anchoring of CdS on the surface of Ag₃PO₄ nanoparticle is achieved by an electrostatically-derived assembly between negatively-charged Ag₃PO₄ nanoparticles and positively-charged CdS quantum dots (QDs). The composite formation between Ag₃PO₄ and CdS nanoparticles gives rise not only to an enhancement of visible light absorption but also to a notable depression of photoluminescence signal, confirming the strong electronic coupling between the two components. The present CdS@Ag₃PO₄ nanocomposite displays higher visible light photocatalytic activity than do the precursors Ag₃PO₄ and CdS, demonstrating the usefulness of electrostatically-derived assembly in exploring highly efficient photocatalyst material.