Spontaneous Formation of Heterodimer Au-Fe 7 S 8 Nanoplatelets by a Seeded Growth Approach

Shaghraf Javaid, Yunguo Li, Dechao Chen, Xiaomin Xu, Yingping Pang, Wei Chen, Fei Wang, Zongping Shao, Martin Saunders, Jean Pierre Veder, Guohua Jia, Franca Jones

Research output: Contribution to journalArticle

5 Citations (Scopus)

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-Fe 7 S 8 ) 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-Fe 7 S 8 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-Fe 7 S 8 NPLs. This strategy was further expanded using Ag NPs as the seed to construct heterodimers, producing Ag 2 S-Fe 7 S 8 heterostructures.

Original languageEnglish
Pages (from-to)10604-10613
Number of pages10
JournalJournal of Physical Chemistry C
Volume123
Issue number16
DOIs
Publication statusPublished - 25 Apr 2019

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