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Removal of methyl violet dye by a photocatalytic process using variations of TiO2/zeolite synthesized from muscovite raw material

Year: 2025

Type: article

Abstract: The removal of methyl violet dye through a photocatalytic process has been successfully carried out.This study aimed to evaluate the photocatalytic efficiency of TiO 2 /zeolite catalysts in degrading methyl violet dye.Zeolites were synthesized from silica and aluminum sources derived from muscovite raw materials using the hydrothermal method, resulting in two types of zeolites: cancrinite (CAN) in synthesis A and analcime (ANA) in synthesis B. The zeolites were combined with anatase-phase TiO 2 to form photocatalysts, with XRD analysis confirming the cubic structure of analcime and hexagonal cancrinite in the anatase phase.FTIR spectra showed sharp bands in the 468-1005 cm -¹ wave number range.SEM analysis showed that TiO 2 /analcime exhibited a hexagonal morphology with a crystal size of 10.58 μm, while TiO 2 /cancrinite had a rod-shaped morphology with a crystal size of 21.3 μm.Surface area analysis showed that TiO 2 /ANA and TiO 2 /CAN had surface areas of 34.80 m²/g and 23.08 m²/g, respectively, with pore diameters > 2 nm, which confirmed their mesoporous nature based on the BJH method.UV-DRS analysis showed band gap energies of 3.13 eV for TiO₂/ANA and 3.11 eV for TiO₂/CAN.Photodegradation tests showed that the TiO₂/ANA catalyst exhibited higher methyl violet degradation efficiency than TiO₂/CAN.This study highlighted the potential of TiO₂/zeolite-based photocatalysts for effective treatment of dye-contaminated wastewater, contributing to environmental sustainability.

Source: Journal of Ecological Engineering

DOI: 10.12911/22998993/200503