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BY-NC-ND 3.0 license Open Access Published by De Gruyter Open Access December 21, 2013

Agglomeration of ZnS nanoparticles without capping additives at different temperatures

  • Petr Praus EMAIL logo , Richard Dvorský , Petr Kovář and Ladislav Svoboda
From the journal Open Chemistry


ZnS nanoparticles were precipitated in diluted aqueous solutions of zinc and sulphide ions without capping additives at a temperature interval of 0.5–20°C. ZnS nanoparticles were arranged in large flocs that were disaggregated into smaller agglomerates with hydrodynamic sizes of 70–150 nm depending on temperature. A linear relationship between hydrodynamic radius (R a) and temperature (T) was theoretically derived as R a =652 - 2.11 T.

The radii of 1.9–2.2 nm of individual ZnS nanoparticles were calculated on the basis of gap energies estimated from their UV absorption spectra. Low zeta potentials of these dispersions of −5.0 mV to −6.3 mV did not depend on temperature. Interactions between individual ZnS nanoparticles were modelled in the Material Studio environment. Water molecules were found to stabilize ZnS nanoparticles via electrostatic interactions.

[1] R.J. Hunter, Foundations of Colloid Science, 2nd edition (Oxford University Press, Oxford, 2009) 1–43 Search in Google Scholar

[2] G. Smith (Ed.), Nanoparticles: From Theory to Applications, 2nd edition (Wiley-VCH, Weinheim, 2010) Search in Google Scholar

[3] K.C. Kwiatkowski, Ch.M. Lukehart, In: H.S. Nalwa (Ed), Nanostructured Materials and Technology (Academic Press, London, 2002) Search in Google Scholar

[4] B.R. Cuenya, Thin Solid Films 518(12), 3127 (2010) in Google Scholar

[5] B. Tyagi, K.B. Sidhpuria, R.V. Jasra, In: H.S. Nalwa (Ed), Encyclopedia of Nanoscience and Nanotechnology (American Scientific Publishers, Valencia, USA, 2011) Vol. 17, 479–546 Search in Google Scholar

[6] L.E. Brus, J. Phys. Chem. 90(12) 2255 (1986) 10.1021/j100403a003Search in Google Scholar

[7] K. Rajeshwar, N.R. de Tacconi, C.R. Chenthamarakshan, Chem. Mater. 13(9), 2765 (2001) in Google Scholar

[8] O. Kozák, P. Praus, K. Kočí, M. Klementová, J. Colloid Interf. Sci. 352(2), 244 (2010) in Google Scholar

[9] P. Praus, R. Dvorský, P. Horínková, M. Pospíšil, P. Kovář, J. Colloid Interf. Sci. 377(1), 58 (2012) in Google Scholar

[10] Materials Studio Modeling Environment, Release 4.3 Documentation (Accelrys Software Inc., San Diego, 2003) Search in Google Scholar

[11] J. W. Anthony, R.A. Bideaux, K.W. Bladh, M.C. Nichols, (Eds.), Handbook of Mineralogy (Mineralogical Society of America, Chantilly, 2013) (accessed on 12th May 2013). Search in Google Scholar

[12] A.K. Rappe, W.A. Goddard, J. Phys. Chem 95(8), 3358 (1991) in Google Scholar

[13] H. Sun, D. Rigby, Spectrochim. Acta A 53(8), 1301 (1997) in Google Scholar

[14] A.K. Rappe, C.J. Casewit, K.S. Colwell, W.A. Goddard, W.M. Skiff, J. Am. Chem. Soc. 114(25), 10024 (1992) in Google Scholar

[15] M. Tieman, Ö. Weiß, J. Hartikainen, F. Marlow, M. Lindén, Chem. Phys. Chem. 6(10), 2113 (2005) in Google Scholar PubMed

[16] K. Dutta, S. Manna, S.K. De, Synth. Met. 159(3–4), 315 (2009) in Google Scholar

Published Online: 2013-12-21
Published in Print: 2014-3-1

© 2014 Versita Warsaw

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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