Soft-Chemical Method for Synthesizing Intermetallic Antimonide Nanocrystals from Ternary Chalcogenide.

Author(s) Jiang, Y.; Yuan, L.; Xu, Y.; Ma, J.; Sun, Y.; Gao, X.; Huang, K.; Feng, S.
Journal Langmuir
Date Published 2019 Nov 26

The synthesis of intermetallic antimonides usually depends on either the high-temperature alloying technique from high-purity metals or the flux method in highly poisonous Pb-melt. In this paper, we introduced a soft-chemical method to synthesize intermetallic antimonides from ternary chalcogenide precursors under an argon atmosphere below 200 °C. Powder X-ray diffraction and compositional analysis clearly indicate that a new phase of the AgSb nanocrystal was synthesized from the AgSbS precursors. Three types of trialkylphosphines (TAPs) were applied as desulfurization agents, and the transformation mechanism was elucidated. The capability of the desulfurization agent follows the sequence of triphenylphosphine (TPP) > tributylphosphine (TBP) > trioctylphosphine (TOP). Besides, this TAP-driven desulfurization route to synthesize the intermetallic phase could also be possible for AgSbSe and SbS. Therefore, this paper provides an efficient and mild technique for the fabrication of intermetallic nanocrystals.

DOI 10.1021/acs.langmuir.9b01774
ISSN 1520-5827
Citation Langmuir. 2019;35(47):1513115136.

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