Effect of Nitrogen Composition on Band Gap Energy and Photocatalytic Activity of TiO2-N/Zeolite Composite
(Pengaruh Komposisi Nitrogen terhadap Energi Celah Pita dan Aktivitas Fotokatalitik Komposit TiO2-N/Zeolit)
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Hanif Mufti Al Islam
Jurusan Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Jember
Sutisna
Jurusan Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Jember
Lutfi Rohman
Jurusan Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Jember
DOI: https://doi.org/10.19184/jid.v26i1.51887
ABSTRACT
In this study, the application of TiO2-N/Zeolite composite for photodegradation of Methylene Blue (MB) under UV irradiation has been reviewed. The synthesis of TiO2-N/Zeolite composite was carried out by hydrothermal method. The synthesis of TiO2-N/Zeolite composite was varied based on the ratio of urea concentration to TiO2, where urea is a precursor of nitrogen (N). The purpose of this study was to examine the effect of nitrogen composition on the band gap energy and photocatalytic activity of TiO2-N/Zeolite composite. UV-Vis DRS test was conducted to determine the band gap energy of each variant of the synthesized sample. Analysis of MB degradation by TiO2-N/Zeolite composite is explained in this study. For comparison, TiO2 and TiO2-N were also tested for their photocatalytic activity and band gap energy characteristics. The results showed that all variants of TiO2-N/Zeolite composites had higher photocatalytic activity compared to TiO2-N and TiO2 in degrading MB. TiO2-N/Zeolite (1.5) composite, which is the variant with the lowest nitrogen composition, has the highest photocatalytic activity (99%) in degrading MB. Meanwhile, based on UV Vis DRS analysis, the band gap energy of TiO2-N/Zeolite composite is lower compared to undoped TiO2. TiO2-N/Zeolite (5.0) composite, which has the highest nitrogen composition, has the lowest band gap energy (3.311 eV). The conclusion of this research is that the smaller the nitrogen composition in TiO2-N/Zeolite composite, the greater the photocatalytic activity in degrading MB. The higher the nitrogen composition in TiO2-N/Zeolite composite, the smaller the band gap energy.
Keywords: band gap, nitrogen, photocatalyst, TiO2, Zeolite.
Published
20-08-2024
Issue
Vol. 26 No. 1 2025: Jurnal ILMU DASAR
Pages
55-64
License
Copyright (c) 2025 Jurnal ILMU DASAR
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