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Sintesis Dan Karakterisasi Fotokatalis Ag/ZnoMenggunakan Ekstrak Kulit Nanas Untuk Degradasi Metilen Biru

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Semiconductor-based photocatalyst method in degrading pollutants is the outstanding
way to overcome water pollution. In this study, the semiconductor material Ag doped
ZnO (Ag/ZnO) was made in powder form using Zn(NO3)2.6H2O, AgNO3 and
pineapple peel extract as Zinc source, Ag source and as bioreductant, resepctively.
Ag/ZnO samples were synthesized with various percentages of Ag , namely, 0%, 2%,
4% and 6%. The physical properties of Ag/ZnO were characterized using UV-Vis
spectroscopy, XRD, and SEM-EDX. UV-Vis absorbance shows that Ag/ZnO
material has maximum absorption characteristics at a wavelength of 335-361 nm. The
band gap energy of Ag/ZnO is in the range of 3.0-3.25 eV which is bellow ZnO
bandgap energy. XRD analysis reveals the hexagonal wurtzite structure of Ag/ZnO
with high crystallinity. The increase in Ag doping shows hkl peak shift to the smaller
diffraction angle leading to bigger crystallite size. The SEM images show that the
Ag-doped ZnO material has a nano-flower and nanosheet shape. Addition of Ag has
reduced the particles size. The EDX spectrum confirmed the present of Ag, Zn and O.
The sample was then made into a film using doctor blade technique for the
photocatalysis evaluation. In the methylene blue degradation process, the reaction
rate constants are ranging from -0.0023 min-1 to -0.010 min-1. The 4% Ag/ZnO
sample have the highest percentage of degradation at 120 minutes, that is 60.98%. In
conclusion, addition of Ag to the ZnO nanoparticle has altered the ZnO's
photocatalytic activity.
Keywords : Ag, Doping, Photocatalyst, Doctor Blade, ZnO

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

1703113350

Penerbit

Pekanbaru : Universitas Riau – FMIPA – FISIKA., 2022

Deskripsi Fisik

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Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

1703113350

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

nadya

Versi lain/terkait

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