BIOSINTESIS NANOKOMPOSIT Ag-ZnO
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Date
2023-01
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Elfitra
Abstract
The addition of Ag meal to ZnO nanoparticles can improve the optical properties of the sample
which results in a sample function that can be utilized and applied in various fields. In addition, the method
used in the manufacture of nanoparticles also needs to be considered to define the environment. The use of
ZnO (zink oxide) semiconductor material is an option in the manufacture of nanoparticles that have
properties that are not easily damaged, are able to absorb UV rays better, are resistant to high temperatures,
and are safer than other metals. The addition and insertion of silver metal was proven to increase the
function and reactivity of ZnO samples. The method of making nanoparticles is divided into two, namely
chemical and biological. Manufacture of nanoparticles using natural materials is proven to be safer and
environmentally friendly compared to synthesis using chemicals that are harmful to the environment and
tend to be quite expensive. In this study, pineapple peel was chosen as a reducing agent in the manufacture
of nanoparticles. Pineapple rind has been reported to contain savonins and flavonoids which function to
assist in the synthesis process. In addition, the use of pineapple peel is also a solution in reducing organic
waste. In the process of making nanoparticles, pineapple peel extract is dried and mashed before being
mixed with ZnO semiconductor material. Meanwhile, in the process of making, Ag-ZnO nanocomposite,
the synthesis of ZnO nanoparticles is carried out first and then after mixing the ZnO solution which has
been mixed with pineapple peel extract and AgNO3 powder until homogeneous then centrifuged and dried.
Analysis of the optical properties of the sample was carried out by using a spectrophotometer UV-Vis
characterization which showed the morphology on the surface of the sample. The results of this
characterization show that the peak absorption of UV light in the sample is at a wavelength of 362 nm and
the processed data from the test can be seen that the sample band gap is 2,98 eV and the morphological
structure of the flower-shaped sample with an average size of 126,69 nm.
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Keywords
Nanocomposites, Biosynthesis, Ag-ZnO
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