What is it about?
It is about new Yolk-shell nanocrystals synthesis with synergistic realization of three kinds of heterointerface, metal/semiconductor, semiconductor/semiconductor, and semiconductor/cocatalyst, by one-step hydrothermal cation exchange reaction. And then it demonstrated potential applications as new kind of photocatalyst.
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Why is it important?
The design and fabrication of hierarchical hetero-nanocrystals with programmed compositions and morphologies is a hot topic due to their applications in a variety of fields, such as drug delivery, nanocatalysis, energy storage and conversion. Yolk–shell nanocrystals (Y–S NCs) as a promising platform for constructing functional nanomaterial have drawn significant attention, partly owing to the existence of an interior void which can accommodate guest molecules and function as a cat-alytic nanoreactor. The new kind Y-S NCs with synergistic diverse heterointerface control to get novel properties and applications are really anticipated.
Perspectives
The fabrication of the Y-S NCs achieves the optimization of plasmon-exciton coupling and plasmon enhanced electron–hole separation, endowing the Y–S NCs with high photocatalytic activities under visible light irradiation. The concept of this strategy can be useful for the synthesis of other noble metal and widespread semiconductor hybrid composites with tunable Y–S structures and new versatile applications.
Jiatao Zhang
Beijing Institute of Technology
Read the Original
This page is a summary of: Hydrothermal Cation Exchange Enabled Gradual Evolution of Au@ZnS-AgAuS Yolk-Shell Nanocrystals and Their Visible Light Photocatalytic Applications, Advanced Science, November 2017, Wiley,
DOI: 10.1002/advs.201700376.
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