Pengaruh Luas Permukaan Material Fotokatalis Cu-TiO2/ZnO dan Larutan HCl Terhadap Degradasi Methylene Blue dalam Photocatalytic Fuel Cell

Tarishah Setyowati Putri; Sarah Dampang; Muhammad Fahmi Hakim; Fitri Yuliasari; David Kevin; Cicilia Putri Meylani

Authors

Tarishah Setyowati Putri Universitas Singaperbangsa Karawang Author
Sarah Dampang Universitas Singaperbangsa Karawang Author
Muhammad Fahmi Hakim Universitas Singaperbangsa Karawang Author
Fitri Yuliasari Universitas Singaperbangsa Karawang Author
David Kevin Universitas Singaperbangsa Karawang Author
Cicilia Putri Meylani Universitas Singaperbangsa Karawang Author

Keywords:

Band Gap, Fotokatalis , Methylene Blue, limbah industri

Abstract

Water pollution caused by industrial dye waste is a serious environmental issue due to the presence of synthetic dyes such as methylene blue (MB), which are difficult to degrade naturally. This study aims to evaluate the performance of Cu-doped TiO₂/ZnO photocatalysts in a Photocatalytic Fuel Cell (PFC) system for MB degradation. The photocatalyst was synthesized using the sol-gel method and characterized by SEM-EDX and UV-Vis DRS. Morphological analysis revealed spherical particles with signs of agglomeration, while EDX confirmed the presence of Cu, Ti, Zn, and O elements. Cu doping at 5% reduced the band gap from 3.18 eV to 2.29 eV, enhancing light absorption into the visible region. Performance tests in the PFC system showed that the optimal condition was achieved using a 7×3 cm glass plate with 15 mL of HCl, producing a maximum voltage of 0.66 V. The highest degradation efficiency of MB reached 58.10% after 120 minutes of irradiation. These results indicate that Cu-TiO₂/ZnO nanocomposites have strong potential as photocatalysts for colored wastewater treatment and simultaneous energy conversion in PFC systems.

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