Effect of H2O2 Addition on the Photocatalyst Properties of Ag3PO4 for Methylene Blue Photodegradation

Febiyanto Febiyanto; Muhammad Sofi Khoerul Amal

doi:10.21580/wjc.v4i2.7996

Effect of H2O2 Addition on the Photocatalyst Properties of Ag3PO4 for Methylene Blue Photodegradation

* - Universitas Gadjah Mada, Indonesia

- Universitas Jenderal Soedirman, Indonesia

(*) Corresponding Author

DOI: 10.21580/wjc.v4i2.7996

Abstract
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In this work, a facile enhanced property of Ag₃PO₄ photocatalyst using H₂O₂ for methylene blue photodegradation has been conducted. Ag₃PO₄ photocatalyst was synthesized using the co-precipitation method. Then, the photocatalytic activity and stability of Ag₃PO₄ were tested in the methylene blue degradation under the addition of an H₂O₂30% solution. According to the results, the prolonged photocatalysis reaction led to a decrease in the catalysis ability of the Ag₃PO₄ photocatalyst. Meanwhile, the addition of 5 mL of H₂O₂ (AH-10% sample) tends to enhance the stability of Ag₃PO₄ photocatalyst with the dye removal percentage and recycling test were up to 90.3% and three recycle runs, respectively. The low stability of Ag₃PO₄ might be due to the catalyst photo-corrosion through Ag⁺ reduction. This research suggests that H₂O₂ is beneficial to inhibit the photo-corrosion of Ag₃PO₄ photocatalyst, even though released Ag ions that were caused by the excess addition of H₂O₂ oxidizing agent should be considered.

Keywords: Ag3PO4; H2O2 compound; methylene blue; photocatalysis; photocatalyst stability

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