CD Skripsi

Sintesis Dan Karakterisasi Nanopartikel Perak Menggunakan Ekstrak Daun Matoa Sebagai Bioreduktor

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Disposal of industrial waste containing metallic Mercury causes water pollution that is
harmful to human health. Colorimetric sensors using silver nanoparticles are the most
promising alternative for detecting Mercury-contaminated water. In this study, silver
nanoparticles (AgNO3) were synthesized by reacting silver nitrate solution with Matoa
leaf extract (Pometia pinnanta) as a bioreductant using microwave assisted. AgNO3
samples were prepared by varying the microwave irradiation power, namely, 360 Watt,
540 Watt, and 720 Watt for 90 seconds. The optical properties, functional groups,
surface morphology, and crystal structure of the samples were characterized using UVVis
spectroscopy, Fourier Transform Infrared Spectroscopy (FTIR), Transmission
Electron Microscope (TEM), and X-Ray diffraction (XRD). The sensitivity of AgNO3
to Mercury was carried out by colorimetric method varying the concentration of HgCl2
solution from 1-100 ppm. The results of UV-Vis absorbance show that the absorbance
peak of the sample is in the range of 430-434 nm. FTIR characterization results
confirmed the presence of O-H functional groups of polyphenolic compounds and
flavonoids in reducing Ag+ ions to silver or Ag0 nanoparticles. TEM images show
round and oval particles with particle sizes ranging from 10-12 nm. The increase in
irradiation power resulted in a decrease in the size of the nanoparticles. The crystal
structure of the synthesized silver nanoparticles is a face centered cubic type with four
diffraction peaks in the (111), (200), (220), and (311) planes. The colorimetric test
results of AgNO3 samples against Mercury showed a change in the color of AgNO3
which indicated the sensitivity of AgNO3 in detecting Mercury. The colorimetric test
results of AgNO3 samples against Mercury showed a change in the color of AgNO3
which indicated the sensitivity of AgNO3 in detecting Mercury. The 720 Watt sample
is the most sensitive silver nanoparticles to the presence of Mercury because it produces
the most significant color change. Based on the obtained characteristics, samples of
silver nanoparticles synthesized using Matoa leaf extract using the microwave method
have the potential to detect Mercury up to 1 ppm.
Keywords: Matoa leaf, mercury, microwave, power, silver nanoparticle

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

1803110303

Penerbit

Pekanbaru : Universitas Riau –FMIPA– FISIKA., 2022

Deskripsi Fisik

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Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

1803110303

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

Lampiran Berkas

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