Liquid chromatography used to size-separate the amphiphilic-molecules stabilized nano-particles of CdS in the 1-10 nm range

R. Sivamohan, H. Takahashi, A. Kasuya, K. Tohji, S. Tsunekawa, S. Ito, B. Jeyadevan

Research output: Contribution to journalConference articlepeer-review

10 Citations (Scopus)

Abstract

The making of nano-particles in the 1-10 nm range in micro-emulsions, the surface coating of these by the amphiphilic-molecules in the same microemulsion and the subsequent treatment of the oil-phase based particles in the liquid chromatography (HPLC) is the focus of this work. A HPLC column with Silica (5 μm diameter, 120 angstrom pore size) with C18 (ODS) bonded phase was used. Toluene is used as the mobile phase. The CdS nanoparticles in the mobile phase were continuously monitored by ultra-violet spectroscopy. The CdS products were collected at different time intervals. For a relatively coarse feed, in 5.7 nm range, a rich product with a sharp size distribution can be obtained. High resolution transmission electron micrograph shows that the product is well crystallized. The eluted products from the HPLC were treated separately in a Size Exclusion Chromatography. Elution times for size-exclusion-chromatography show that the different HPLC products come out in different time intervals suggesting the possibility of nanoparticle size separation by this method.

Original languageEnglish
Pages (from-to)89-94
Number of pages6
JournalNanostructured Materials
Volume12
Issue number1
DOIs
Publication statusPublished - 1999
EventProceedings of the 1998 4th International Conference on Nanostructured Materials (NANO '98) - Stockholm, Swed
Duration: 1998 Jun 141998 Jun 19

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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