An Experimental and Computational Study of β-AgVO3: Optical Properties and Formation of Ag Nanoparticles

详细信息    查看全文

• 作者：Regiane Cristina de Oliveira ; Marcelo Assis ; Mayara Mondego Teixeira ; Maya Dayana Penha da Silva ; Máximo Siu Li ; Juan Andres ; Lourdes Gracia ; Elson Longo
• 刊名：Journal of Physical Chemistry C
• 出版年：2016
• 出版时间：June 9, 2016
• 年：2016
• 卷：120
• 期：22
• 页码：12254-12264
• 全文大小：870K
• 年卷期：0
• ISSN：1932-7455

文摘

This article aims to gather together in one place and for first time the formation process of Ag nanoparticles (NPs) on β-AgVO₃ crystals, driven by an accelerated electron beam from an electronic microscope under high vacuum. Synthesis and optical properties of β-AgVO₃ are reported, and the relationship between structural disorder and photoluminescence emissions is discussed. First principle calculations, within a QTAIM framework, have been carried out to provide a deeper insight and understanding of the observed nucleation and early evolution of Ag nanoparticles (NPs) on β-AgVO₃ crystals. The Ag nucleation and formation is a result of structural and electronic changes of the [AgO₅] and [AgO₆] clusters, consistent with Ag metallic formation.