Environmental Engineering Reference
In-Depth Information
R
R
R
R
O
N
X
N
N
N
X
NH
2
N
N
N
H
N
N
N
H
H
N
H
R
R
R
R
n
-1
figure 7.3
Bis(pyrazole-1-yl)methane fragment.
H
N
H
N
N
H
figure 7.4
Triazene.
H
N
H
N
N
N
m
n
x
figure 7.5
Polyaniline (PANi).
R
R
R
N
R
N
N
N
M
N
N
N
R
N
R
R
R
figure 7.6
general formula of metal phthalocyanines.
the sol-gel method. For gas sensing tests, the products were exposed to ethanol vapor, revealing that the composite sensors
required an appropriate ratio to exhibit optimum sensing properties.
The phthalocyanines (Fig. 7.6), known for more than 100 years as pigments, among a series of other applications, have been
used for purposes of environmental protection too. Thus, iron(II) phthalocyanine (nano FePc) could serve as a powerful
functional material for the development of sensors and electrocatalytic devices [26]. The nano FePc exhibited enhanced
