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Phase transfer-based synthesis of HgS nanocrystals.

Dalton transactions (Cambridge, England : 2003) (2014-06-28)
Lin Han, Pengfei Hou, Yan Feng, Hui Liu, Jianling Li, Zhijian Peng, Jun Yang
ABSTRACT

Phase transfer techniques possess remarkable advantages for the synthesis of inorganic nanomaterials. In contrast to the abundant reports on the preparation of noble metal nanoparticles using phase transfer, the number of semiconductor nanocrystals syntheses based on phase transfer techniques is still limited. Herein, we report a systematic study of the phase transfer-based synthesis of HgS nanocrystals, including the tuning of their morphology/shape by either solvent choice or temperature. This strategy involves the transfer of Hg(ii) ions from aqueous solution to toluene, oleic acid or oleylamine and subsequent sulfidation at room or elevated temperature. Furthermore, we have extended this phase-transfer based strategy to the fabrication of HgS-Au nanocomposites. The studies in this work might provide a facile route for producing HgS nanocrystals with desirable properties and offer an effective strategy to investigate the influence of the morphology of HgS on the physical/chemical properties of various HgS-based materials.

MATERIALS
Product Number
Brand
Product Description

Supelco
Oleic acid, analytical standard
Supelco
Sulfur, PESTANAL®, analytical standard
Sigma-Aldrich
Oleic acid, meets analytical specification of Ph, Eur., 65.0-88.0% (GC)
Sigma-Aldrich
Oleic acid, ≥99% (GC)
Sigma-Aldrich
Oleic acid, technical grade, 90%
Sigma-Aldrich
Tetraoctylammonium bromide, 98%
Supelco
Tetraoctylammonium bromide, suitable for ion pair chromatography, LiChropur, ≥99.0% (AT)
Supelco
Tetraoctylammonium bromide, Selectophore
Sigma-Aldrich
Sulfur, powder, 99.98% trace metals basis
Sigma-Aldrich
Sulfur, flakes, ≥99.99% trace metals basis
Sigma-Aldrich
Sulfur, 99.998% trace metals basis
Sigma-Aldrich
Oleic acid, natural, FCC
Sigma-Aldrich
Oleylamine, technical grade, 70%
Sigma-Aldrich
Oleic acid, suitable for cell culture, BioReagent
Supelco
Oleic acid, Selectophore, ≥99.0%
SAFC
Oleylamine, ≥98% (primary amine)
Oleic acid, European Pharmacopoeia (EP) Reference Standard
Sigma-Aldrich
Dodecylamine, 98%
Sigma-Aldrich
Dodecylamine, ≥99%
Sigma-Aldrich
Dodecylamine, puriss., ≥99.5% (GC)