Investigation on Deterioration of Allura Red Dye Under Visible Radiation by TiO2 Based Nanocomposite

Abstract

This current study is to prepare and characterise a Cu-doped Titanium dioxide (TiO₂) and Cu-doped Titanium dioxide with Tungsten (WO₃) nanocomposite and its application for the deterioration of Allura Red (AR) Dye. After preparing the Cu- doped Titanium dioxide (TiO₂) with WO₃ and Cu-doped Titanium dioxide (TiO₂) nanocomposites using wet chemical Sol-gel method over various soaking times, the XRD, BET, and Ultraviolet-visible spectroscopy were used to determine the properties of the synthesized Copper-doped Titanium dioxide and Copper-doped Titanium dioxide with Tungsten nanocomposites. When Tungsten was added to Cu-doped Titanium dioxide (TiO₂), the X-Ray Diffraction showed that all of the composites' peaks shifted slightly in the direction of a higher diffraction angle. To evaluate surface area BET curve was used. The Copper-doped Titanium dioxide (TiO₂)/Tungsten (WO₃) nanocomposite gives a significant photocatalytic activity because of its increased surface area. High surface area (BET) and anatase phase development (XRD), which are the main contributors to effective photocatalytic activity, were identified by the work's results. XRD revealed that the synthesised materials were in the anatase phase. Compared to CDT, CTW-15, CTW-30, and CTW-60 nanocomposites, the surface area (BET) of the CTW-45 nanocomposite is larger at 128.79 m²/g. By examining the kinetics of reaction parameters such as dopant concentrations, pH, catalyst dose, and dye concentration, the catalysts were able to determine the ideal conditions for improved photocatalytic degradation of Allura Red dye. At pH 4, dye concentrations of 5 mg/L, and CTW-45 concentrations of 100 mg/L, the percentage of AR dye degradation was greater. The findings of this study can be used to develop efficient nanocomposites that remove Allura Red dye from wastewater.

Received: 28 December 2023 | Revised: 18 March 2024 | Accepted: 19 June 2024

Conflicts of Interest

The authors declare that they have no conflicts of interest to this work.

Data Availability Statement

Data are available from the corresponding author upon reasonable request.