3D printing of titanium dioxide and polyaniline-based photocatalytic composites

Abstract

Photocatalysis has emerged as a promising method for wastewater treatment, organic removal, and hydrogen gas production. Titanium dioxide (TiO2) is a popular photocatalyst due to its ability to absorb ultraviolet light, its electronic structure, and its optical and chemical stability. The photocatalytic capacity of TiO2 is influenced by its crystal structure (anatase, rutile, and brookite), particle size, and surface area, which can be optimized. Moreover, TiO2 can be coated onto substrates such as ceramics or polymers. This research aims to investigate the application of 3D printing techniques to fabricate composites between TiO2 and polyaniline (PANI) under controlled processing conditions. The 3D photocatalyst was characterized using XRD, SEM, XAS, FTIR, and UV-VIS techniques. The results of this research could pave the way for more efficient and effective photocatalysts fabricated by 3D printing technique, with potential benefits for environmental sustainability and energy production.