“…8,9 However, the silica is an insulator material, which has motivated the synthesis of composite materials by adsorbing electrical conductive polymers in its walls, which permitted to combine silica properties such as stiffness, thermal and mechanical stability with advantages of the polymer such as flexibility, electrical conductivity, ductility and processability. 10 Polyaniline (PANI) is one of the most studied polymers in the last years and it has been used in many devices such as rechargeable batteries, 11 fuel 12,13 and solar cells, [14][15][16][17] coatings 18,19 and sensors. 20,21 PANI exhibits different advantages like the simple process of synthesis, 22 low cost and high electrical conductivity, which can be modulated by changing the oxidation and protonation degree.…”