CD Skripsi

Biosintesis Seng Oskida Berbasis Iradiasi Gelombang Mikro Sebagai Material Fotokatalis

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ABSTRACT
The synthesis of zinc oxide (ZnO) mediated pineapple peel extract has been
carried out using the microwave irradiation method. Pineapple peel extract plays a
role as a stabilizer and bioreductor. In this study, ZnO samples were synthesized
in various of Zn precursor (Zink Nitrate Hexahydrate) concentrations of 50mM,
100mM, 200mM, and 500mM 360 Watt microwave irradiation for 2 min. The
optical properties, crystal structure, and morphology of the ZnO samples were
characterized using Ultraviolet-Visible (UV-Vis) spectroscopy, X-Ray Diffraction
(XRD), and Scanning Electron Microscopy (SEM). The ZnO sample was then
applied as a photocatalyst through the degradation process of methylene blue. The
broad peak of ZnO UV-Vis absorption occurred at the wavelength range of 300-
360 nm for all samples which correspond to the bandgap of 3.17-3.20 eV. The
crystal structure of ZnO obtained from the X-ray diffraction pattern is a hexagonal
wurtzite structure with a crystallite size of 17.55 nm. SEM results show spherical
particle morphology with an average particle size of 190-320 nm. Based on the
photocatalyst activity test, the ZnO sample with a precursor concentration of 200
mM has the most optimal ability to degrade methylene blue. This is evidenced by
the change in the color of the methylene blue solution at the highest reaction rate
constant of 0.1552 min-1. Therefore, ZnO samples synthesized with pineapple peel
extract using the microwave irradiation method are expected to be effective in the
air purification process.
Keyword : ZnO, Microwave, Photocatalyst activity, Methylene blue

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

03 01. 121 (0033)

Penerbit

Pekanbaru : Universitas Riau – FMIPA – Fisika., 2021

Deskripsi Fisik

ix, 79 hlm.; ill.: 29 cm

Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

03 01. 121 (0033)

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

ELFITRA

Versi lain/terkait

Lampiran Berkas

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