TY - JOUR
T1 - Structural, magnetic, optical and antibacterial properties of magnetite ferrofluids with PEG-20000 template
AU - Taufiq, A.
AU - Ikasari, F. N.
AU - Yuliantika, D.
AU - Sunaryono, S.
AU - Mufti, N.
AU - Susanto, H.
AU - Suarsini, E.
AU - Hidayat, N.
AU - Fuad, A.
AU - Hidayat, A.
AU - Diantoro, M.
N1 - Publisher Copyright:
© 2019 Elsevier Ltd. All rights reserved.
PY - 2019
Y1 - 2019
N2 - Ferrofluids based on magnetite nanoparticles by PEG-20000 as template were successfully prepared through a co-precipitation route. In this experiment, TMAH was employed to coat the magnetite nanoparticles from iron sand preventing agglomerations. The structural, magnetic, optical, and antibacterial performances were investigated by means of XRD, SEM/EDX, FTIR, UV-Vis, VSM, and colony formation test. The magnetite particles were formed in a nanometric size of 9.4 nm in a spherical shape with the lattice parameter of 8.4 Å. The FTIR spectrum presented the vibration of Fe-O bond resulting from the magnetite particle both in tetrahedral and octahedral sites. The magnetite nanoparticle had band gap energy of 2.26 eV. Furthermore, the ferrofluids exhibited a superparamagnetic character with a saturation magnetization that was lower than the magnetite nanopowders. Interestingly, the ferrofluids had a significant antibacterial activity on E. coli (gram-negative bacteria) up to multiples times compare to control or placebo. Therefore, it provides a big opportunity to be applied for antiseptical agents as well as for water treatment or sanitation. Besides that, the utilization of the iron sand becomes a novel candidate as an alternative main precursor to produce antibacterial materials.
AB - Ferrofluids based on magnetite nanoparticles by PEG-20000 as template were successfully prepared through a co-precipitation route. In this experiment, TMAH was employed to coat the magnetite nanoparticles from iron sand preventing agglomerations. The structural, magnetic, optical, and antibacterial performances were investigated by means of XRD, SEM/EDX, FTIR, UV-Vis, VSM, and colony formation test. The magnetite particles were formed in a nanometric size of 9.4 nm in a spherical shape with the lattice parameter of 8.4 Å. The FTIR spectrum presented the vibration of Fe-O bond resulting from the magnetite particle both in tetrahedral and octahedral sites. The magnetite nanoparticle had band gap energy of 2.26 eV. Furthermore, the ferrofluids exhibited a superparamagnetic character with a saturation magnetization that was lower than the magnetite nanopowders. Interestingly, the ferrofluids had a significant antibacterial activity on E. coli (gram-negative bacteria) up to multiples times compare to control or placebo. Therefore, it provides a big opportunity to be applied for antiseptical agents as well as for water treatment or sanitation. Besides that, the utilization of the iron sand becomes a novel candidate as an alternative main precursor to produce antibacterial materials.
KW - Antibacterial
KW - Ferrofluid
KW - Iron sand
KW - Nanoparticle
KW - Superparamagnetic
UR - http://www.scopus.com/inward/record.url?scp=85084240451&partnerID=8YFLogxK
U2 - 10.1016/j.matpr.2019.06.204
DO - 10.1016/j.matpr.2019.06.204
M3 - Conference article
AN - SCOPUS:85084240451
SN - 2214-7853
VL - 17
SP - 1728
EP - 1735
JO - Materials Today: Proceedings
JF - Materials Today: Proceedings
T2 - 1st Materials Research Society of Thailand International Conference, MRS Thailand 2019
Y2 - 31 October 2017 through 3 November 2017
ER -