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The present investigation aims to synthesize the novel nanocomposite thin film and utilize the material to remove emerging dyes efficiently (i.e., Rhodamine B (R-B) and Rhodamine 6G (R-6G)), in an aqueous solution using LED visible light and UV-A light. A facile synthetic route was adopted to obtain the TiO2-supported bentonite and <i>in situ</i> decorated with Au nanoparticles (NPs) thin film. The advanced analytical techniques characterizes the materials. The laboratory scale reactor was utilized for efficient degradation of R-B and R-6G using thin film catalysts. The percentage removal of R-B was 54.13% (visible light) and 76.26% (UV-A light) and the R-6G, was removed 60.37% (visible light) and 84.68% (UV-A light) at the initial pollutant concentration of 0.5 mg/L and at pH 6.0 using the thin film photocatalyst. The parametric studies demonstrated the insights of degradation mechanisms in photocatalytic operations. A significant mineralization of these dyes is achieved, and the repeated use in reactor operations indicated the catalysts

Nanocomposite Ag 0 (NPs)/TiO 2 is synthesized in a facile template method enabling ne particles of reduced Ag evenly distributed within the titania network. The morphological studies of nanocomposite were extensively performed employing SEM/EDX (Scanning Electron Spectroscopy/Energy Dispersive Xray), TEM (Transmission Electron Microscopy) and AFM (Atomic Force Microscopy). The newer insights in the photocatalytic elimination of Mordant Orange-1 (MO1) was obtained using the nanocomposite thin lm for various parametric studies utilizing the UV-A and LED illuminations. The kinetics of degradation of MO1 was performed and the rate constant was favoured at lower concentrations of MO1. However, the elimination e ciency of MO1 was favoured with decrease in solution pH. The NPOC results inferred that fairly good extent of MO1 was mineralized using thin lm catalyst for both the UV-A and LED illuminations. The minimal effect of several co-ions demonstrated applicability of thin lms in the elimination of MO1 and the stability of the thin lm has shown the potential applicability of thin lm catalyst. Further, mechanism of photocatalytic degradation was demonstrated with the radical scavengers studies and ascertained the reaction pathways.

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