Solvothermal routes to capped oxide and chalcogenide nanoparticles*
Ujjal K. Gautam1, Moumita Ghosh1, Michael Rajamathi2,
and Ram Seshadri1,**
1Solid State and Structural Chemistry Unit, Indian
Institute of Science, Bangalore 560 012, India; 2Department of Chemistry,
St. Joseph's College, Bangalore 560 027, India
Abstract: We review our recent contributions to the use of solvothermal
methods for the preparation of different oxide and chalcogenide nanoparticles.
We have prepared sub 10-nm g-Fe2O3, ZnFe2O4,
and CoFe2O4 particles by the decomposition of
the corresponding cupferron complexes in the presence of n-octylamine
or n-dodecylamine in solvothermal toluene. Similarly, dodecanethiol-capped
chalcogenide nanoparticles of CdSe have been prepared by reacting cadmium
stearates with H2Se under solvothermal conditions. The H2Se
is generated in situ by the reduction of Se by tetralin. Using this
latter technique, we have also been able to prepare PbSe and PbI2
in toluene under solvothermal conditions, albeit in bulk (rather than
nanocrystalline) form. In the preparation of PbI2, HI is
prepared by the in situ reduction of I2 by tetralin.
* Special Topic Issue on the Theme
of Nanostructured Advanced Materials
**Corresponding author
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