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Spontaneous Formation of Heterodimer Au–Fe₇S₈ Nanoplatelets by a Seeded Growth Approach

Javaid, S; Li, Y; Dechao, C; Xu, X; Pang, Y; Chen, W; Wang, F; ... Jones, F; + view all (2019) Spontaneous Formation of Heterodimer Au–Fe₇S₈ Nanoplatelets by a Seeded Growth Approach. The Journal of Physical Chemistry C , 123 (16) pp. 10604-10613. 10.1021/acs.jpcc.8b11701. Green open access

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Abstract

Hybrid nanomaterials offer increased flexibility to achieve heterostructures with controlled functionalities and predictable linkages owing to their synergistic interactions. Here, we have developed a synthetic strategy that produced hexagonal-shaped nanoplatelets (NPLs) of gold–pyrrhotite (Au–Fe7S8) with Au embedded inside them by means of a seeded growth method. Using thiol-capped Au nanoparticles (NPs) as a seed, heterogeneous nucleation of the iron precursor was facilitated, leading to the formation of Au–Fe7S8 NPLs. The injection temperature and surface ligand of the seed (Au) were two critical factors that determined the homogeneity and final morphology of the Au–Fe7S8 NPLs. This strategy was further expanded using Ag NPs as the seed to construct heterodimers, producing Ag2S–Fe7S8 heterostructures.

Type: Article
Title: Spontaneous Formation of Heterodimer Au–Fe₇S₈ Nanoplatelets by a Seeded Growth Approach
Open access status: An open access version is available from UCL Discovery
DOI: 10.1021/acs.jpcc.8b11701
Publisher version: https://doi.org/10.1021/acs.jpcc.8b11701
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Iron, Sulfides, Metal nanoparticles, Gold, Transmission electron microscopy
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Earth Sciences
URI: https://discovery.ucl.ac.uk/id/eprint/10071367
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