Chemistry Reference
In-Depth Information
2
Microwave-Assisted Route Towards
Fluorinated Nanomaterials
Damien Dambournet, Alain Demourgues and Alain Tressaud
Institut de Chimie de la Mati`re Condens´e de Bordeaux (ICMCB-CNRS), Universit´ Bordeaux 1. 87
Avenue du Dr Albert Schweitzer, 33608 Pessac Cedex, France
2.1
Introduction
The development of synthesis routes for the preparation of new inorganic fluorides is of
continuing interest. There are numerous routes for synthesizing metal fluorides that
include solid-state reactions, aqueous and sol-gel synthesis, gas-phase reactions and
decomposition reactions.
1,2
Since the beginning of the millennium, the synthesis of
nanomaterials has gained in importance due to the intrinsic size-dependent properties of
the resulting solids. In the field of synthesis techniques, the use of microwaves as a heating
source is a growing area due to its peculiar heating mode.
3
In the traditional heating mode,
heat is transferred from the vessel toward the mixture. Microwave heating, however, takes
place directly in the core of the matrix, allowing shorter reaction times and the absence of
temperature gradient in the medium. It also offers the possibility of stabilizing new
nanosized materials in an energy-efficient way. A large range of materials has been
successfully prepared including oxides,
4
phosphates,
5
sulphides,
6
hybrid fluorides,
7
metals,
8
nanoporous materials
9
... However, the application of such a technique for
preparing nanosized metal fluorides is very limited so far.
