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A facile chemical route to copper sulfide CuS nanocrystallites – pH effect of the morphology and the shape of them

C. M. SIMONESCU1,* , L. PATRON2, V. S. TEODORESCU3, M. BREZEANU1, C. CAPATINA4

Affiliation

  1. Department of Inorganic Technology and Environmental Protection, Faculty of Applied Chemistry and Materials Science, University “Politehnica” of Bucharest, Polizu Street, no. 1-7, RO-011061,Buchares
  2. Romanian Academy, Physical and Chemical Institute I. G. Murgulescu, Splaiul Independentei Street, No.202, Bucharest, Romania
  3. National Institute R&D for Materials Physics, P.O.Box. Mg-7, Bucharest-Magurele, Ro-77125, Romania
  4. Department of Environmental Engineering, University “Constantin Brancusi”, Genova Street, no. 3, RO-210152, Targu-Jiu, Gorj, Romania

Abstract

A facile chemical route for the synthesis of copper sulfide (CuS) nanocrystallites consists of the reaction between Cu(CH3COO)2 .H2O and Na2S2O3 .5H2O. In this reaction the influence of the folowing factors was pursued: pH value, reaction time, molar ratios, temperature and others. In this article we tried to establish the evolution of the morphology and the shape of the CuS nanocrystallites with the pH value. The CuS nanocrystallites obtained were studied by X ray diffraction, IR spectrometry, TEM – transmission electron microscopy and SAED selected area electron diffraction. The CuS crysta lites are formed in spherical or “discoidal” particles which are bonded in bigger aggregates. The reaction pH value was varied from a slightly acid value to an alkali value. In case of alkali medium the crystallites dimensions were smaler than their value in slightly acid medium..

Keywords

Copper sulfide nanocrystallites, pH effect, XRD, IR, TEM.

Submitted at: Jan. 18, 2006
Accepted at: March 23, 2006

Citation

C. M. SIMONESCU, L. PATRON, V. S. TEODORESCU, M. BREZEANU, C. CAPATINA, A facile chemical route to copper sulfide CuS nanocrystallites – pH effect of the morphology and the shape of them, Journal of Optoelectronics and Advanced Materials Vol. 8, Iss. 2, pp. 597-600 (2006)