520
O. Aksimentyeva et al.
0 10 20 30 40 50 60 70 80 90 100110120130
0
2000
4000
6000
8000
10000
12000
2
1
Intensity
0 10 20 30 40 50 60 70 80 90 100110120130
0
1000
2000
3000
4000
5000
6000
7000
8000
Intensity
b
a
2θ
2θ
Fig. 13 Diffraction patterns of PAn (1, a, b), PAn-Pd composite (2, a), PAn-Au composite (2, b)
scatter domains, in the approximation—the average grain size of the phase, is 305
± 61 Å, average maximum internal stress in grains—2.2 × 10
−3 . In addition, you
can see semi-morphic reflexes from PAn which practically are not offset in angles
2θ and intensities.
In fact, in this case, a mechanical mixture of PAn and silver is formed. However,
there are two noticeable peaks at 2θ 32,20 and 46,15 °2θ, as well as two weak ones at
54,80 and 57,40 °2θ indicate that the system also has some component of chemical
interaction with the formation of the composite phase PAn-Ag in a small amount,
which is manifested in the existence of such reflexes.
4 Conclusion
Thus, the obtained polyaniline composites with noble metals have a semiconductor
character of the conductivity; their morphology depends largely on the nature of the
metal compound used for synthesis.
The X-ray structural studies and a scanning electron microscopy with energydispersive spectroscopy showed that the PAn-Au composite is characterized by the
formation of uniformly distributed metallic grains in the polymer with the size of 12.6
± 3.4 nm. In the PAn-Ag composite the main mass of metal with an average particle
size of 30.5 ± 3.5 nm is included in the polymer matrix. The diffractogram of the PAnPt composite has only an amorphous halo, which is inherent to the polymer, while
the energy-dispersion spectroscopy indicates the presence of metal in the composite.
Obviously, platinum is in a completely amorphous state (the size of the particles
of its phase grains is ~2 nm). The most interesting was the PAn-Pd composite, for
which there are well-formed reflexes that may belong to the individual phase of
Pd x ((C 6 H 7 N) n ) y . Separate sections of the metallic phase have not been recorded on
O. Aksimentyeva et al.
0 10 20 30 40 50 60 70 80 90 100110120130
0
2000
4000
6000
8000
10000
12000
2
1
Intensity
0 10 20 30 40 50 60 70 80 90 100110120130
0
1000
2000
3000
4000
5000
6000
7000
8000
Intensity
b
a
2θ
2θ
Fig. 13 Diffraction patterns of PAn (1, a, b), PAn-Pd composite (2, a), PAn-Au composite (2, b)
scatter domains, in the approximation—the average grain size of the phase, is 305
± 61 Å, average maximum internal stress in grains—2.2 × 10
−3 . In addition, you
can see semi-morphic reflexes from PAn which practically are not offset in angles
2θ and intensities.
In fact, in this case, a mechanical mixture of PAn and silver is formed. However,
there are two noticeable peaks at 2θ 32,20 and 46,15 °2θ, as well as two weak ones at
54,80 and 57,40 °2θ indicate that the system also has some component of chemical
interaction with the formation of the composite phase PAn-Ag in a small amount,
which is manifested in the existence of such reflexes.
4 Conclusion
Thus, the obtained polyaniline composites with noble metals have a semiconductor
character of the conductivity; their morphology depends largely on the nature of the
metal compound used for synthesis.
The X-ray structural studies and a scanning electron microscopy with energydispersive spectroscopy showed that the PAn-Au composite is characterized by the
formation of uniformly distributed metallic grains in the polymer with the size of 12.6
± 3.4 nm. In the PAn-Ag composite the main mass of metal with an average particle
size of 30.5 ± 3.5 nm is included in the polymer matrix. The diffractogram of the PAnPt composite has only an amorphous halo, which is inherent to the polymer, while
the energy-dispersion spectroscopy indicates the presence of metal in the composite.
Obviously, platinum is in a completely amorphous state (the size of the particles
of its phase grains is ~2 nm). The most interesting was the PAn-Pd composite, for
which there are well-formed reflexes that may belong to the individual phase of
Pd x ((C 6 H 7 N) n ) y . Separate sections of the metallic phase have not been recorded on