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ITS » Undergraduate Theses » Teknik Kimia
Posted by dee@its.ac.id at 03/12/2010 15:56:18  •  2089 Views


SINTESA NANOPARTIKEL MAGNETITE DENGAN METODE ELEKTROKIMIA

SYNTHESIS OF MAGNETITE NANOPARTICLES WITH ELECTROCHEMICAL METHOD

Author :
FEBRIANA, RISA  ( 2306100045 )
JANUARITA, AYUNDA WAHYUNING




ABSTRAK

Tujuan penelitian ini adalah membuat nanopartikel magnetite Fe3O4 dengan metode elektrokimia dan mengevaluasi pengaruh kondisi operasi teganganrapat arus dan jarak antar elektroda terhadap ukuran partikel. Proses sintesa nanopartikel magnetite Fe3O4 ini diawali dengan elektroplating besi dalam larutan elektrolit FeSO4 0072 M pada rapat arus 0167 Adm2 selama 6 jam. Sintesa nanopartikel magnetite dilakukan dalam air demin menggunakan plat besi yang terlapisi besi murni dengan elektroplating sebagai anoda dan plat besi sebagai katoda. Proses elektrolisa berjalan selama 24 jam. Elektroda dipasang secara dengan jarak bervariasi di antara keduanya yaitu 2 cm 4 cm dan 6 cm serta tegangan antara 10 hingga 25 V. Partikel yang dihasilkan disaring dan dikeringkan untuk selanjutnya dikarakterisasi. Partikel yang terbentuk dikarakterisasi dengan XRD dan ukuran partikel diukur secara tidak langsung dengan mengukur luas permukaan spesifiknya dengan metode BET. Selain itu selama proses sintesa sel elektrokimia terutama dekat elektroda direkam dengan kamera video untuk mengetahui perubahan yang terjadi selama proses sintesa. Didapatkan semakin besar rapat arus maka pembentukan partikel Fe3O4 semakin cepat. Dan didapatkan bahwa ukuran partikel sangat dipengaruhi oleh rapat arus kecuali untuk jarak antar elektroda 4 cm. Diameter partikel akan semakin besar dengan semakin besarnya rapat arus.


ABSTRACT

The purpose of this research was to make magnetite nanoparticles Fe3O4 with electrochemical methods and to evaluate the influence of operating conditions voltage current density and distance between the electrodes on the particles size. The process of synthesizing magnetite nanoparticles Fe3O4 was started with an electroplating of iron in the electrolyte solution FeSO4 0072 M at current density of 0167 Adm2 for six hours. Synthesis of magnetite nanoparticles in demineralized water was performed using the electroplated iron as the anode and the iron plate as the cathode. The process was carried out for 24 hours. The distances between electrodes was varied from 2 to 6 cm and the voltage was varied from 10 to 25 V. The precipitated were filtered and dried for characterization. The produced particles were characterized by XRD and the size was measured indirectly by measuring the specific surface area by BET method. During the synthesis the cell especially near the electrodes was recorded by a video camera to get a better insight about the process taking place. It was found that the current density tends to speed up the formation of particles.The particles size is greatly influenced by the current density except for the electrode distance of 4 cm. It tends to increase with the increase of current density.



KeywordsBET; elektrokimia; nanopartikel magnetite; XRD
 
Subject:  Elektrokimia
Contributor
  1. Prof. Dr. Ir. Heru Setyawan, M.Eng
Date Create: 02/08/2010
Type: Text
Format: pdf.
Language: Indonesian
Identifier: ITS-Undergraduate-3100010041390
Collection ID: 3100010041390
Call Number: RSK 620.5 Feb s


Source
Undegraduate Thesis, Chemical Engineering, RSK 620.5 Feb s, 2010

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