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All Journal JOURNAL ONLINE OF PHYSICS INDONESIAN JOURNAL OF APPLIED PHYSICS Jurnal Fisika Indonesia Jurnal Teras Fisika : Teori, Modeling, dan Aplikasi Fisika
Edi Suharyadi
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Astronomy Earth & Planetary Sciences Education Energy Materials Science & Nanotechnology Physics

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Journal : INDONESIAN JOURNAL OF APPLIED PHYSICS

 1 
Sintesis Nanopartikel Cobalt Ferrite (CoFe2O4) dengan Metode Kopresipitasi dan Karakterisasi Sifat Kemagnetannya Eko Arief Setiadi; Nanda Shabrina; Hesti Retno Budi Utami; Nur Fadhilah Fahmi; Takeshi Kato; Satoshi Iwata; Edi Suharyadi
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 3, No 01 (2013): IJAP VOLUME 03 ISSUE 01 YEAR 2013
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v3i01.1216

Abstract

Magnetic nanoparticles of cobalt ferrite (CoFe2O4) have been synthesized by co-precipitation method with various synthesis temperature and concentration of NaOH. The structural characteristics and particle size of CoFe2O4 were determined by X-ray diffraction (XRD) and Transmission Electron Microscopy (TEM), its showed that nanoparticles well crystallized with various grain size which depend on synthesis parameters. The grain sizes estimated using the Scherrer formula were found that the grain size increased with increasing temperature synthesis and decreasing concentration of NaOH. Magnetic characterization of CoFe2O4 nanoparticles was investigated by using a Vibrating Sample Magnetometer (VSM). Sample with various concentration of NaOH showed that coercivity was decrease with the decrease of particle size. In other hand, samples with various synthesis temperature found that sample withsmallest grain size have high coersivity. The saturation magnetization increase when crystallinity increase. Based on the results, it can be concluded that magnetic characterization of CoFe2O4 was influenced by grain size and crystallinity.
Adsorpsi Logam Tembaga (Cu), Mangan (Mn) dan Nikel (Ni) dalam Artificial Limbah Cair dengan Menggunakan Nanopartikel Magnetit (Fe3O4) Diah Mahmudah; Nurhidayati Sakinah; Edi Suharyadi
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 4, No 02 (2014): October
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v4i02.4974

Abstract

Magnetite (Fe3O4) nanoparticles have been successfully synthesized using co-precipitation method and have been used for removing Cu, Mn and Ni metals ions from artificial wastewater. Ability of removing metal ions with Fe3O4 against pH, adsorbent particle size, readsorption and by addition of Polyethylene Glycol (PEG-4000) as coating agent of adsorbent have been studied. The adsorption process was found to be pH-dependent. Maximum adsorption at pH 12 for most of the metal ions with percent of sorption Cu 99.79%, Ni 69.83% and Mn 44.53%. Using adsorbent with 12 nm of particles size, readsorption process and by addition of Polyethylene Glycol (PEG-4000) as coating agent of adsorbent also made the ability of removing metals ions increasing. Preliminary results indicate that magnetite nanoparticles may be used as an adsorbent for removal of Cu, Mn and Ni from wastewater.
Co-Authors Abdin Adrian Rahmat Nur Agung Bambang Setio Utomo Diah Mahmudah Eko Arief Setiadi EVI YULIANTI Evvy Kartini Hesti Retno Budi Utami ISMAIL SALEH Kartika Sari La Agusu La Ode Rusman Nanda Shabrina Nur Fadhilah Fahmi Nurhidayati Sakinah Satoshi Iwata Seveny Nuzully sunardi sunardi Takeshi Kato Takeshi Kato Yumnawati