Titanium dioxide (TiO₂) or titania is only photoactive under ultraviolet irradiation (λ ≤ 390 nm), which limits its applications under visible light. Different sensitizers have been used to increase the semiconductor’s photo-response range, and π-conjugated systems are promising for this application. In this work, the use of protonated thiophene-based oligomers (OT_n⁺) as sensitizers, was tested, due its characteristics such as thermal and chemical stability. These compounds can be formed by the reaction of thiophene and Brönsted acid sites on protonic zeolite Y. This work presents the synthesis, characterization, and photocatalytic evaluation of a novel hybrid material, TiO₂-OT_n⁺/HY. The hybrid material was synthesized by an acid-catalyzed sol–gel method obtaining nanoparticles of TiO₂ attached to zeolite Y crystals; the OT_n⁺ were corroborated by ¹³C nuclear magnetic resonance and UV–Vis spectroscopy, species from the protonated thiophene monomer to the protonated pentathiophene were identified. Moreover, the photocatalytic experiments showed that the materials with OT_n⁺ were faster than non-sensitized materials in the methyl orange degradation, in this way, a visible light active material is presented.