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首页> 外文期刊>Chemistry: A European journal >Selective Deposition of Silver Oxide on Single-Domain Ferroelectric Nanoplates and Their Efficient Visible-Light Photoactivity
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Selective Deposition of Silver Oxide on Single-Domain Ferroelectric Nanoplates and Their Efficient Visible-Light Photoactivity

机译：单域铁电纳米板上氧化银的选择性沉积及其高效可见光光敏性

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摘要

In this work, single-crystal and single-domain PbTiO3 nanoplates are employed as substrates to prepare Ag2O/PbTiO3 composite materials through a photodeposition method. It is revealed that silver oxide nanocrystals with an average size of 63 nm are selectively deposited on the positive polar surface of the ferroelectric substrate. The possible mechanism leading to the formation of silver oxide is that silver ions are first reduced to silver and then oxidized by oxygen generation. The composite shows an efficient photo-degradation performance towards rhodamine B (RhB) and methyl orange (MO) under visible-light irradiation. Such highly efficient photoactivity can be attributed to the ferroelectric polarization effect of the substrate, which promotes the separation of photogenerated electrons and holes at the interface.
机译：在这项工作中，以单晶和单畴PbTiO3纳米板为基材，通过光沉积法制备Ag2O / PbTiO3复合材料。揭示出平均尺寸为63nm的氧化银纳米晶体选择性地沉积在铁电衬底的正极表面上。导致形成氧化银的可能机理是，银离子首先被还原成银，然后被氧气生成氧化。该复合材料在可见光照射下对若丹明B（RhB）和甲基橙（MO）表现出有效的光降解性能。这种高效的光活性可以归因于基板的铁电极化效应，该效应促进了界面处光生电子和空穴的分离。

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