Green Synthesis Nanopartikel Emas Menggunakan Quercus Infectoria Galls dari Campuran Logam dengan Adsorben Karbon Aktif

Farida, Nor (2024) Green Synthesis Nanopartikel Emas Menggunakan Quercus Infectoria Galls dari Campuran Logam dengan Adsorben Karbon Aktif. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pada penelitian ini telah berhasil dilakukan green synthesis nanopartikel emas menggunakan bioreduktor ekstrak Quercus Infectoria Galls atau manjakani. Emas diperoleh dari pelarutan campuran logam dalam medium 7M HCl dan 1,5M NaOCl selama 5 jam pada suhu 75°C. Green synthesis nanopartikel emas menggunakan bioreduktor ekstrak manjakani dengan variasi volume filtrat dan manjakani masing-masing yaitu 1:1, 3:1, 5:1, dan 7:1 serta variasi waktu reaksi selama 3 jam, 4 jam, dan 5 jam. Analisis spektrofotometer UV-Vis dilakukan pada rentang panjang gelombang 400 – 1000nm untuk mengidentifikasi pembentukan nanopartikel. Pembentukan nanopartikel optimum terjadi pada perbandingan volume filtrat dan manjakani 3:1 ditunjukkan oleh panjang gelombang maksimum 845nm dan serapan absorbansi 1,174. Nanopartikel yang terbentuk diambil dengan proses adsorpsi menggunakan karbon aktif sebanyak 5 gram dengan waktu kontak 10 jam pada suhu ruang. Setelah proses adsorpsi, karbon aktif dihilangkan dengan kalsinasi suhu 700°C selama 4 jam. Hasil proses tersebut didapatkan massa padatan 0,4046 gram dengan persentase emas 5,13% meningkat dari semula persentase emas dalam sampel sebesar 0,65%, namun kadar tersebut masih serupa dengan kadar konsentrat.
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In this study, successful green synthesis of gold nanoparticles using the bioreductor extract from Quercus Infectoria Galls or oak galls, commonly known as manjakani, has been achieved. Gold was obtained by dissolving a mixture of metals in a solution of 7M HCl and 1.5M NaOCl for 5 hours at a temperature of 75°C. Green synthesis of gold nanoparticles was performed using the manjakani extract as a bioreductor, with variations in the volume ratio of filtrate to manjakani at 1:1, 3:1, 5:1, and 7:1, as well as variations in reaction time for 3 hours, 4 hours, and 5 hours. UV-Vis spectrophotometer analysis was conducted in the wavelength range of 400 – 1000nm to identify the formation of nanoparticles. The optimum nanoparticle formation occurred at a volume ratio of 3:1 for filtrate to manjakani, indicated by a maximum wavelength of 845nm and an absorbance peak of 1.174. The formed nanoparticles were collected through adsorption using 5 grams of activated carbon with a contact time of 10 hours at room temperature. After the adsorption process, the activated carbon was removed by calcination at a temperature of 700°C for 4 hours. The results of this process yielded a solid mass of 0.4046 grams with a gold percentage of 5.13%, an increase from the initial gold percentage in the sample, which was 0.65%. However, this concentration is still similar to the concentrate level.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Nanopartikel, Sintesis, Emas, Reduktor, Adsorpsi, Nanoparticle, Synthesis, Gold, Bioreductor, Adsorption
Subjects:	Q Science > QD Chemistry > QD1 Oxidation-reduction reaction. Q Science > QD Chemistry > QD63 Extraction
Divisions:	Faculty of Science and Data Analytics (SCIENTICS) > Chemistry > 47201-(S1) Undergraduate Thesis
Depositing User:	Nor Farida
Date Deposited:	19 Feb 2024 07:35
Last Modified:	19 Feb 2024 07:35
URI:	http://repository.its.ac.id/id/eprint/107495

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