Enhanced Photocatalytic Degradation Activity of Methyl Violet Dyes Utilizing TiO2/Natural Zeolite Composite

Ulya, Lulu'atul Hamidatu ORCID: https://orcid.org/0009-0009-8845-7948, Setiawan, Agie Pratama, Setyaputra, Iqbal Annur Eka and Maghfiroh, Maghfiroh (2025) Enhanced Photocatalytic Degradation Activity of Methyl Violet Dyes Utilizing TiO2/Natural Zeolite Composite. Presented at IOP Conference Series: Earth and Environmental Science, 01/10/2024-02/10/2024, Malang, Indonesia.

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Abstract

For boosting the degradation activity of methyl violet employing
photocatalyst, titanium dioxide modified by natural zeolite (TNZ) was successfully
produced by sonication method. TiO2 is a photocatalyst that can be used to degrade
methyl violet. TNZ was characterized using XRD to determine crystal structure,
XRF to determine the elemental composition, and Spectrophotometer UV-Vis/DRS
to determine band gap energy and absorbance in the long wavelength region.
Furthermore, TNZ was examined its photodegradation activity, including the effect
of irradiation time, optimum catalyst mass, and optimum dye concentration for
dye degradation. The XRD characterization results show that TiO2 has an anatase
phase, zeolite has a modernite phase. The XRF results indicate that some
impurities in zeolite have been successfully removed after the activation process.
Ti content in TNZ is 63.64%. Natural zeolite can decrease the band gap of TiO2 from
3.31 eV to 3.29 eV. The optimum time for the photodegradation process is found
to be 150 minutes with a degradation percentage of 98.27%. The optimum catalyst
mass for the photodegradation process is 20 mg with a degradation percentage of
99.47%. The optimum dye concentration for the photodegradation process is 10
ppm with a degradation percentage of 99.74%.

Item Type:	Conference (Paper)
Keywords:	Methyl Violet, Natural Zeolite, Photodegradation, Titanium Dioxide
Subjects:	03 CHEMICAL SCIENCES > 0302 Inorganic Chemistry > 030203 Inorganic Green Chemistry 05 ENVIRONMENTAL SCIENCES > 0599 other environmental sciences > 059999 Environmental Sciences not elsewhere classified
Divisions:	Faculty of Mathematics and Sciences > Department of Chemistry
Depositing User:	M.Sc Lulu'atul Hamidatu Ulya
Date Deposited:	22 Dec 2025 15:15

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