Jump to main content
Jump to site search

Issue 38, 2017
Previous Article Next Article

Chalcogenide and pnictide nanocrystals from the silylative deoxygenation of metal oxides

Author affiliations

Abstract

Transition metal chalcogenide and pnictide nanocrystals are of interest for optoelectronic and catalytic applications. Here, we present a generalized route to the synthesis of these materials from the silylative deoxygenation of metal oxides with trimethylsilyl reagents. Specific nanophases produced in this way include Ni3S2, Ni5Se5, Ni2P, Co9S8, Co3Se4, CoP, Co2P, and heterobimetallic (Ni/Co)9S8. The resulting chalcogenide nanocrystals are hollow, likely due to differential rates of ion diffusion during the interfacial phase transformation reaction (Kirkendall-type effect). In contrast, the phosphide nanocrystals are solid, likely because they form at higher reaction temperatures. In all cases, simultaneous partial decomposition of the deoxygenating silyl reagent produces a coating of amorphous silica around the newly formed nanocrystals, which could impact their stability and recyclability.

Graphical abstract: Chalcogenide and pnictide nanocrystals from the silylative deoxygenation of metal oxides

Back to tab navigation

Supplementary files

Publication details

The article was received on 24 Mar 2017, accepted on 10 Sep 2017 and first published on 11 Sep 2017


Article type: Paper
DOI: 10.1039/C7TA02581E
Citation: J. Mater. Chem. A, 2017,5, 20351-20358
  •   Request permissions

    Chalcogenide and pnictide nanocrystals from the silylative deoxygenation of metal oxides

    C. Lin, S. J. Tan and J. Vela, J. Mater. Chem. A, 2017, 5, 20351
    DOI: 10.1039/C7TA02581E

Search articles by author

Spotlight

Advertisements