Dependence of PEO content in the preparation of Fe3O4/PEO/TMAH ferrofluids and their antibacterial activity

Taufiq, Ahmad; Ikasari, Fitri Nur; Hidayat, Nurul; Ulya, Habibatun Nurul; Saputro, Rosy Eko; Mufti, Nandang; Hidayat, Arif; Sunaryono, Sunaryono; Chuenchom, Laemthong

doi:10.1007/s10965-020-02100-w

Cited by 17 publications

(18 citation statements)

References 47 publications

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“…Ferrofluids are considered smart materials because of their outstanding combination of features such as flexible flowability, rapid magnetic response, and tunable optical and thermal characteristics [2]. Therefore, many researchers in the nanoscience and nanotechnology fields have developed ferrofluids for use in, for example, hyperthermia cancer treatments, magnetic resonance imaging contrast agents [3], antimicrobial agents [4,5], and liver fibrosis treatments [6].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Fe3O4/Ag nanohybrid ferrofluids and their applications as antimicrobial and antifibrotic agents

Taufiq

Saputro

Susanto

et al. 2020

Heliyon

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To date, the search for creating stable ferrofluids with excellent properties for biomedical application is one of the challenging scientific and practical investigations. In this study, novel Fe 3 O 4 /Ag nanohybrid ferrofluids from iron sand were synthesized using a double-layer method. The Fe 3 O 4 /Ag nanocomposites exhibited stable crystallite sizes of 11.8 12.1 nm and 36.8-37.2 nm for Fe 3 O 4 and Ag, respectively. The lattice parameters of the spinel structure Fe 3 O 4 and face-centered cubic Ag were respectively 8.344 Å and 4.091 Å. With increasing Ag amount, the crystallite phase of Ag in the nanocomposites increased from 40.2% to 77.2%. The XPS results confirmed that Fe 3 O 4 /Ag nanocomposites were successfully prepared, where Fe 3 O 4 mixed well with Ag via strong ionic bonding. The FTIR results confirmed the presence of Fe 3 O 4 /Ag, oleic acid, and dimethyl sulfoxide as the filler, first layer, and second layer, respectively. The as-prepared ferrofluids exhibited superparamagnetic behavior, where the saturation magnetization decreased with increasing Ag content. The Fe 3 O 4 /Ag nanohybrid ferrofluids exhibited excellent antimicrobial performance against Bacillus subtilis, Staphylococcus aureus, Escherichia coli, and Candida albicans. More importantly, the Fe 3 O 4 /Ag nanohybrid ferrofluids decreased the progression of liver fibrosisrelated inflammation and fibrogenic activity on hepatic stellate cells.

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Section: Introductionmentioning

confidence: 99%

Synthesis of Fe3O4/Ag nanohybrid ferrofluids and their applications as antimicrobial and antifibrotic agents

Taufiq

Saputro

Susanto

et al. 2020

Heliyon

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“…This is consistent with the results of the previous work 14 . Meanwhile, the XRD patterns of the crystalline phase showed diffraction peaks at 2θ of 30.1°, 35.6°, 43.3°, 57.3°, and 63.0°, which represent the (200), (311), (400), (422), (511), and (440) planes of Fe 3 O 4 , respectively 15 . Furthermore, the intensities of the In this crystal structure, the Fe 2+ and Fe 3+ ions are distributed in octahedral and tetrahedral sites.…”

Section: Resultsmentioning

confidence: 99%

Fabrication of New Fe3O4/PVA/(C6H7O6Na)n Nanohybrid Ferrogels for Antibacterial Applications

et al. 2021

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New Fe 3 O 4 /polyvinyl alcohol (PVA)/sodium alginate (C 6 H 7 O 6 Na) n nanohybrid ferrogels for antibacterial applications were fabricated. The crystal and molecular structures along with optical and magnetic properties of the prepared samples were characterized. The antibacterial activity of the ferrogels against Bacillus subtilis and Escherichia coli was investigated using the agar dilution method. X-ray diffraction analysis showed that the Fe 3 O 4 /PVA comprised a PVA amorphous phase and a spinel-structured Fe 3 O 4 crystalline phase. The Fe 3 O 4 /PVA crystallite size was 7.5-9.9 nm and the scanning electron micrographs showed that the Fe 3 O 4 /PVA agglomerated. The ferrogels were superparamagnetic with saturation magnetizations from 14.8 × 10 −3 to 82.1 × 10 −3 emu/g. The absorption of the ferrogels showed a bathochromic effect, accompanied by an increase in the bandgap from 2.09 to 2.18 eV with increasing Fe 3 O 4 content in the ferrogels. The ferrogels demonstrated new potency as antibacterial agents against B. subtilis and E. coli, where their antibacterial performance increased with increasing Fe 3 O 4 content.

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“…The surface modification of the Co-doped double-layered ferrofluids also contributed to the inhibition of microbial growth. Theoretically, magnetic nanoparticles in ferrofluids covered by positive charges increased interactions with negatively-charged microbes and produced attractive electrostatic forces between the particle magnetic and microbes ( Taufiq et al, 2020 ), generating more effective in inhibiting the microbial growth. In general, the ferrofluids exhibited more inhibition of E. coli than S. aureus and B. subtilis , which proves that the electrostatic force plays an essential role in inhibiting bacterial growth ( Li et al, 2019 ).…”

Section: Resultsmentioning

confidence: 99%

Excellent antimicrobial performance of co-doped magnetite double-layered ferrofluids fabricated from natural sand

Taufiq

Saputro

Yuliantika

et al. 2020

Journal of King Saud University - Science

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The preparation of Co-doped magnetite ferrofluids from natural sand was developed using a double-layer technique. The Co-doped magnetite nanoparticles formed a spinel phase with lattice parameters in the range of 8.355–8.422 Å and tended to agglomerate with the particle sizes of 7–12 nm. The presence of the first and second layers from oleic acid and DMSO was detected by the infrared spectrum as well as the olive oil used as a carrier liquid. The saturation magnetization of the superparamagnetic samples decreased from 24.4 to 4.8 emu/g with decreasing Co 2+ composition. The particle size and electrostatic forces between the magnetic particles and the microbes played an essential role in inhibiting microbial growth. Interestingly, the increasing Co 2+ composition enhanced the superior performance of the ferrofluids against E. coli, S. aureus, B. subtilis, and C. albicans . With additional extensive investigation, we believe that the prepared Co-doped magnetite double-layered ferrofluids from natural sand with superior antimicrobial performance can be new significant antimicrobial agents.

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Dependence of PEO content in the preparation of Fe3O4/PEO/TMAH ferrofluids and their antibacterial activity

Cited by 17 publications

References 47 publications

Synthesis of Fe3O4/Ag nanohybrid ferrofluids and their applications as antimicrobial and antifibrotic agents

Synthesis of Fe3O4/Ag nanohybrid ferrofluids and their applications as antimicrobial and antifibrotic agents

Fabrication of New Fe3O4/PVA/(C6H7O6Na)n Nanohybrid Ferrogels for Antibacterial Applications

Excellent antimicrobial performance of co-doped magnetite double-layered ferrofluids fabricated from natural sand

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