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Issue 48, 2018
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Tunable plasmonic core–shell heterostructure design for broadband light driven catalysis

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Abstract

Considerable effort has been devoted to manipulating the optical absorption of metal nanostructures for diverse applications. However, it still remains a challenge to develop a general and flexible method to promote broadband absorption of metal nanostructures without changing their size and shape. Here, we report a new strategy of hybridizing two conceptually different optical models to realize broadband absorption enhancement of metal nanoparticles (NPs), which is enabled by constructing a core–shell heterostructure, consisting of a spherical dielectric core covered by a metal NPs interlayer and tunable semiconductor shell. This approach integrates the interfacial photon management, photoexcitation of metal NPs and injection of hot charge carriers into the semiconductor shell, and results in distinctly enhanced hot charge carrier generation and transfer, thereby boosting the broad-spectrum light driven catalysis. The structure–plasmon–catalysis interplay of the heterostructure is comprehensively studied and optimized. This proof-of-concept proves to be generally feasible by varying the type of both metal NPs and support medium, opening a new avenue to control the optoelectronic properties of materials.

Graphical abstract: Tunable plasmonic core–shell heterostructure design for broadband light driven catalysis

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Publication details

The article was received on 09 Oct 2018, accepted on 15 Nov 2018 and first published on 15 Nov 2018


Article type: Edge Article
DOI: 10.1039/C8SC04479A
Chem. Sci., 2018,9, 8914-8922
  • Open access: Creative Commons BY license
    All publication charges for this article have been paid for by the Royal Society of Chemistry

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    Tunable plasmonic core–shell heterostructure design for broadband light driven catalysis

    C. Han, S. Li, Z. Tang and Y. Xu, Chem. Sci., 2018, 9, 8914
    DOI: 10.1039/C8SC04479A

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