BIOSYNTHESIS OF IRON NANOMETAL USING ACALYPHA HISPIDA, EUPHORBIA PULCHERRIMA, GRAPTOPHYLLUM PICTUM, AND QUASSIA AMARA L. LEAVES EXTRACT AS REDUCTOR FOR FECL3.6H2O IRON PRECURSOR
The application of iron nanometals has been widely studied, especially in remediation processes. In addition, iron nanometals also have a positive impact in the health sector and as catalysts. Synthesis of iron nanometals using physical and chemical methods requires high energy and costs while pr...
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| Format: | Final Project |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/57603 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | The application of iron nanometals has been widely studied, especially in
remediation processes. In addition, iron nanometals also have a positive impact in
the health sector and as catalysts. Synthesis of iron nanometals using physical and
chemical methods requires high energy and costs while producing substances that
are harmful to the environment. Another alternative method that is more
environmentally friendly is to use biological agents as reducing agent in the process
of synthesis iron nanometals that called biosynthesis. The advantages of this
biosynthesis method, besides being cost-effective, can also produce stable iron
nanometals through stabilizing agents or capping agents. The use of plants as a
reducing agent was chosen because of its abundant availability in nature and the
uncomplicated synthesis process. In this study, biosynthesis of iron nanometals was
carried out using ekor kucing leaf extract (Acalypha hispida), kastuba leaf
(Euphorbia pulcherrima), daun ungu leaf (Graptopphyllum pictum) and ki
congcorang leaf (Quassia amara L.) by reviewing several parameters, such as
biosynthesis time, temperature, precursor concentration, and extract volume.
The series of experiments began with the preparation of the selected plant extract,
then continued with the preparation of the FeCl3.6H2O precursor using deionized
water. The iron nanometal biosynthesis process is carried out by mixing a solution
of iron precursor with plant extracts. Preliminary experiments were conducted to
select 30 plant extracts with the greatest potential to produce iron nanometals. The
4 selected plant extracts were further tested to determine the effect of the
experimental parameters that had been set. The color change of the biosynthesis
solution indicates the formation of iron nanometals. Characterization was carried
out on the biosynthesis solution using Eh-pH meter and UV-Vis. The results of iron
nanometals and plant leaves were analyzed using FTIR.
Based on experiments that have been carried out on a laboratory scale, the optimum
point for each plant was obtained as follows: ekor kucing leaf 1 minute, 25oC, 0.33
M precursor, and 5 mL extract; kastuba leaf 6 minutes, 25oC, 0.25 M precursor, and
1 mL extract; daun ungu leaf 6 minutes, 25oC, 0.29 M precursor, and 7 mL extract;
ki congcorang leaf 1 minute, 25oC, 0.29 M precursor, and 3 mL extract. The results
of FTIR characterization showed that the best plant extract in synthesizing of iron
nanometals was daun ungu leaf. |
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