Delamination of surfactant-intercalated brucite-like hydroxy salts of cobalt and copper and solvothermal decomposition of the resultant colloidal dispersions

Langmuir : the ACS Journal of Surfaces and Colloids
Jacqueline T RajamathiMichael Rajamathi

Abstract

Surfactant anion intercalated hydroxy salts of copper and cobalt of the formula M(OH)2- x (surf)x.mH2O [M = Cu, Co; surf = dodecyl sulfate, dodecyl benzene sulfonate, and x = 0.5 for Cu and 0.67 for Co] delaminate readily in 1-butanol to give translucent colloidal dispersions that are stable for months. The extent of delamination and the colloidal dispersion observed in these solids is higher than what had been observed for layered double hydroxides. The dispersions yield the corresponding nanoparticulate oxides on solvothermal decomposition. While the copper hydroxy salt forms approximately 300 nm dendrimer-like CuO nanostructures comprising nanorods of approximately 10 nm diameter, the cobalt analogue forms approximately 20 nm superparamagnetic particles of Co3O4.

References

Aug 23, 2002·Chemical Communications : Chem Comm·Shane O'LearyGordon Seeley
Jun 2, 2005·Journal of Colloid and Interface Science·C NethravathiMichael Rajamathi
May 31, 2008·Journal of Colloid and Interface Science·B R VenugopalMichael Rajamathi

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Citations

Jun 27, 2013·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·K KaviyarasuPrem Anand Devarajan
Mar 22, 2014·Dalton Transactions : an International Journal of Inorganic Chemistry·B SchneiderováK Lang
Feb 23, 2010·Journal of Colloid and Interface Science·C NethravathiMichael Rajamathi
Feb 20, 2010·Journal of Colloid and Interface Science·Hongjuan LiZong-Huai Liu
Sep 30, 2009·International Journal of Antimicrobial Agents·Gabriela CarjaKiyoshi Okada
Jun 2, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·Allison C CardielKyoung-Shin Choi

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