CD Skripsi

Biosintesis Nanopartikel Zno MenggunakanEkstrak Daun Ketapang (Terminalia Catappa) Dengan Variasi Ph

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ABSTRACT
Zinc Oxide (ZnO) nanoparticles are inorganic semiconductors that are generally
powdered and non-toxic and have high electron mobility and thermal stability.
This research aims to synthesize ZnO nanoparticles using ketapang leaf extract for
use in methylene blue photocatalysts. The method used in this study is
Biosynthesis using Ketapang leaf extract. Ketapang leaf extract contains flavonoid
compounds and tannins that function as corrosion inhibitors in metals. Ketapang
leaf extract is made with a ratio of 1: 5, temperature 60°C with a solution pH of
pH 8, 9, 10, 11, and 12. The success of the reduction reaction is depicted from the
UV-Vis spectrophotometer the emergence of absorption at wavelengths of 300-
400 nm with the highest absorbance of pH 12 (1.389), pH 11 (1.149), pH 10
(1.048), pH 9 (0.899), and pH 8 (0.758). The resulting energy gap is from the
range of 2.06-2.46 eV. The best sample 2 from UV-Vis results are pH 11 samples
and pH 12 samples which are further characterized by XRD and SEM. XRD
analysis yielded a hexagonal wurtzite structure because both samples showed
lattice planes (100), (002), (101), (102), (110), (103) and (112). SEM (Scanning
Electron Microscopy) analysis showed the morphology of nanoflower-shaped
nanoparticles with the average particle size of pH 11 samples was 89.13 nm and
the average particles of pH 12 samples was 46.80 nm. EDX spectrum results show
that the ZnO purity level in pH 11 samples is 57.8% and pH 12 samples is 75.7%.
ZnO nanoparticles formed by biosynthesis of ketapang leaves with pH variations
were able to degrade methylene blue solution with a concentration of 25 ppm at
an optimum time of 5 hours with degradation efficiencies of 59.8%, 62.6%,
67.0%, 70.3%, and 72.4%.
Keywords: Biosynthesis, ZnO nanoparticles, ketapang leaf, UV-Vis, XRD,
hexagonal wurtzite, SEM, nano-flower, degradation, methylene blue

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

1903112215

Penerbit

Pekanbaru : Universitas Riau - FMIPA - Fisika., 2023

Deskripsi Fisik

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Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

1903112215

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

PUJA

Versi lain/terkait

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