Synthesis of polyaniline on functionalized TiO 2 using two-container type in situ coating technique

The possibility of coating polyaniline molecules onto functionalized TiO 2 particles was explored using two-container type in situ coating technique. The TiO 2 particles were functionalized by silane–aniline molecules as linker between the TiO 2 and polyaniline molecules. The precursor and oxidizing agent were placed in two separate containers during polymerization to minimize aggregation of polyaniline molecules in the bulk of the solution. Peaks detected from the infrared spectra possess the vibrational peaks associated with the synthesized polyaniline molecules coating onto the silane–aniline functionalized TiO 2 . A possible configuration was constructed to illustrate the coexistence of different structures as a result of the synthesized polyaniline molecules onto the functionalized TiO 2 surface. Morphology of the samples using SEM with EDX mapping shows the uniform distribution of Ti and Si atoms throughout the sample. By utilizing the two-container type in situ coating technique, polyaniline molecules were successfully coated onto the surface of TiO 2 particles using silane–aniline as coupling agent.