Bimetallic Supported Catalysts from Single-source Precursors - Atomically-Precise Methods for Synthesis of Solid Catalysts - page 79

d n 9 r 4 n g | 5

.

Figure 3.12 TEM images of cluster-derived Fe-Co magnetic nanoparticles supported
on (a) carbon nanofibres and (b) multi-walled carbon nanotubes.
Reproduced from ref. 85.

are concerned, the boundary between them and giant molecular clusters
begin to fade. Hence, a clear distinction between this type of study and what
has been described in the preceding sections is not relevant. H. Bonnemann
and co-workers used their 'precursor' concept to prepare homogeneous
alloys, segregated alloys, layered bimetallics and 'decorated' particles. The
solution-stabilized nanoparticles can be characterized in detail by EXAFS,
electron microscopy and X-ray diffraction before being immobilized on a
support, hence allowing better control on the final nanostructure. In add-
ition, the stabilizing agent might be tailored to provide a lipophilic or
hydrophilic protective shell, the nanoparticles can be coated by intermediate