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Analisa Sifat Fisis Dan Aktivitas Fotokatalis Se/Zno Hasil Biosintesis Menggunakan Ekstrak Daun Matoa

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ABSTRACT
Water pollution due to industrial waste contains hazardous pollutant compounds. ZnO semiconductor-based photocatalyst degradation is an effective method for decomposing pollutants by utilizing UV radiation. In this study, the Se-doped (Se/ZnO) material is prepared with variations of Se doping namely 0%, 5%, 10%, and 15% using Matoa leaf extract with microwave irradiation. Doping Se aims to improve physical properties and obtain new characteristics. Samples are characterized by UV – Vis, XRD, FESEM – EDX, and BET spectroscopy. The UV – Vis absorption peak of the ZSe sample is in the Ultraviolet region of 357 – 367 nm with bandgap energy ranging from 3.14 – 3.23 eV. The crystal structure of the sample is hexagonal wurtzite with the diffraction peak shifted to the left due to the addition of Se doping. FESEM images show a spherical surface morphology with a decrease in particle size as Se doping increases. The EDX spectrum confirms the presence of Zn, O, and Se elements in the sample. BET analysis showed that the sample had a specific surface area of between 10 – 18 m2/g and a wider pore volume with increasing Se doping (0.094 – 0.164 cc/g). The addition of Se doping succeeded in degrading 4-Nitrophenol pollutant within 120 minutes under UV light irradiation with the highest reaction rate of -0.0218 min-1 in 5% Se samples. Each of the 0%, 5%, 10%, and 15% Se-doped ZnO samples have degradation percentages of 74%, 88%, 80%, and 68%, respectively. Therefore, ZnO biosynthesis with the addition of Se doping using Matoa leaf extract has the potential to develop and apply in degrading colored pollutants.
Keywords : Biosynthesis, degradation, doping, Selenium, ZnO, 4-nitrophenol

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

1903110130

Penerbit

Pekanbaru : Universitas Riau - FMIPA - Fisika., 2023

Deskripsi Fisik

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Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

1903110130

Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

FISIKA

Info Detail Spesifik

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Pernyataan Tanggungjawab

tethi

Versi lain/terkait

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