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The research aims to evaluate the photocatalytic performance of TiO2/CdS nanocomposites for dye degradation and antibacterial activity.

April 12, 2026WaterOpen Access

TiO2/CdS Heterojunction as an Efficient Photocatalyst for Degradation of Crystal Violet Dye and Antibacterial Activity

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The study demonstrates effective degradation of crystal violet dye by TiO2/CdS in environmental applications, suggesting sustainability benefits.

The research aims to evaluate the photocatalytic performance of TiO2/CdS nanocomposites for dye degradation and antibacterial activity.
Synthesis of TiO2 NPs, CdS NPs, and TiO2/CdS nanocomposite via sol-gel, hydrothermal, and ex situ methods.
Characterization using XRD, UV-vis DRS, FTIR, SEM, and EDX techniques.
Photocatalytic degradation experiments of crystal violet dye under visible-light irradiation with varying conditions.
TiO2/CdS nanocomposite achieved 86.3% degradation of crystal violet dye in 180 min, outperforming pure TiO2 (16.4%) and CdS (66.9%).
Maximum removal efficiency of 97.1% for crystal violet occurred at a concentration of 10 mg/L.
Photocatalytic degradation followed pseudo-first-order kinetics with hydroxyl radicals as the dominant reactive species.
Reusability of TiO2/CdS nanocomposite showed minimal activity loss after five cycles.
Significant antibacterial activity was noted against Pseudomonas aeruginosa.

Ahmad et al. (2026) studied this question.

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The study demonstrates effective degradation of crystal violet dye by TiO2/CdS in environmental applications, suggesting sustainability benefits.