Indonesia Conference Directory

Corresponding Author
Rosy Eko Saputro

Institutions
1) Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang Jl. Semarang 5, Malang 65145, Indonesia
2) Centre for Science and Technology of Advanced Materials, National Nuclear Energy
Agency of Indonesia, Tangerang 15314, Indonesia

Abstract
The use of cobalt ferrite as a filler in ferrofluids was proposed as a smart material with magnetic review for antimicrobial applications. Referring to X-ray diffraction data, the nano particle of Co0.4Fe2.6O4 shows an entirely magnetite phase with a particle size of about 9 nm. Filler morphology shows agglomeration with an average particle size distribution of around 41 nm. Claims for filler elements are made through element mapping. The magnetic properties of filler and ferrofluids are examined through hysteresis curves, resulting in both superparamagnetic conditions. Antimicrobial activity of ferrofluidics is carried out through the diffusion method on three types of bacteria and one type of fungus with a view of the diameter of the inhibited zone observed. Based on this test, a relatively high inhibitory zone value was obtained and could be recommended as an antimicrobial material.

Keywords
Co0.4Fe2.6O4, ferrofluid, magnetic properties, antimicrobial

Topic
Biomagnetism

Link: https://ifory.id/abstract/ckQKAfaJgmNn

Corresponding Author
Sunaryono Sunaryono

Institutions
1Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang, Jl. Semarang No. 5, Malang 65145, Indonesia
2Center of Advanced Materials for Renewable Energy (CAMRY), Universitas Negeri Malang, Jl. Semarang No. 5 Malang 65145, Indonesia

*Corresponding Author-s Email: sunaryono.fmipa[at]um.ac.id

Abstract
Iron oxide material is widely available in nature and can be explored in nanomaterial research and can be developed to be applied in the fields of industry, health, and technology. Iron oxides that are available in nature can be classified into several types, one of which is hematite. Hematite material doped with Zn was successfully synthesized using coprecipitation. Mass variations (0.1 and 0.3g) of Zn doping have also been carried out to determine the hematite behavior towards the characteristics of ZnxFe2-xO3 nanoparticles. ZnxFe2-xO3 nanoparticles were successfully characterized by using X-ray Diffraction (XRD) to determine the effect of Zn doping on crystal structure and particle size of ZnxFe2-xO3 nanoparticle, magneto-thermal to determine the thermal behavior of ZnxFe2-xO3 nanoparticles. The grain size of ZnxFe2-xO3 nanoparticles with doping masses of Zn 0.1 g and 0.3 g were obtained for 5 and 60 nm, respectively. The magneto-thermal analysis shows that the SAR value of ZnxFe2-xO3 nanoparticles with a doping mass of Zn 0.1 g and 0.3 g respectively 1.017 and 1.075 W / g. While the antimicrobial analysis of ZnxFe2-xO3 nanoparticles showed that the zone of inhibition was strengthened by the addition of Zn doping mass through the S. Aureus bacterium. Thus, ZnxFe2-xO3 nanoparticles are very potential to become antimicrobial agents.

Keywords
Hematite, ZnxFe2-xO3, SAR, antimicrobial, and Co-precipitation

Topic
Biomagnetism

Link: https://ifory.id/abstract/8M36xtmheHX7