Contributions of TMAH Surfactant on Hierarchical Structures of PVA/Fe3O4–TMAH Ferrogels by Using SAXS Instrument

Sunaryono, Sunaryono; Taufiq, Ahmad; Mufti, Nandang; Susanto, Hendra; Putra, Edy Giri Rachman; Soontaranon, Siriwat; Darminto, Darminto

doi:10.1007/s10904-018-0939-z

Cited by 19 publications

(5 citation statements)

References 45 publications

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“…Such data provides information that the Fe ions consisting of Fe 2+ and Fe 3+ are randomly placed in the spinel system, which corresponds to the X-ray diffraction data. In line with the FTIR data, the previous work presented that the Fe 3 O 4 particles formed a single phase in a spinel cubic structure [31,36]. 1 present SANS profiles of the samples and their data analysis results.…”

Section: Resultssupporting

confidence: 78%

Nanostructure and Magnetic Field Ordering in Aqueous Fe3O4 Ferrofluids: A Small-Angle Neutron Scattering Study

et al. 2019

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Despite the importance of reducing production costs, investigating the hierarchical nanostructure and magnetic field ordering of Fe 3 O 4 ferrofluids is also important to improve its application performance. Therefore, we proposed an inexpensive synthesis method in producing the Fe 3 O 4 ferrofluids and investigated their detailed nanostructure as the effect of liquid carrier composition as well as their magnetic field ordering. In the present work, the Fe 3 O 4 ferrofluids were successfully prepared through a coprecipitation route using a central precursor of natural Fe 3 O 4 from iron sand. The nanostructural behaviors of the Fe 3 O 4 ferrofluids, as the effects of the dilution of the Fe 3 O 4 particles with H 2 O as a carrier liquid, were examined using a small-angle neutron spectrometer (SANS). The Fe 3 O 4 nanopowders were also prepared for comparison. A single lognormal spherical distribution and a mass fractal model were applied to fit the neutron scattering data of the Fe 3 O 4 ferrofluids. The increasing carrier liquid composition of the fluids during dilution process was able to reduce the fractal dimension and led to a shorter length of aggregation chains. However, it did not change the size of the primary particles or building block (approximately 3.8 nm) of the Fe 3 O 4 particles. The neutron scattering of the Fe 3 O 4 ferrofluids under an external magnetic field in the range of 0 to 1 T exhibited in a standard way of anisotropic phenomenon originating from the nanostructural ordering of the Fe 3 O 4 particles. On the other hand, the Fe 3 O 4 powders did not show anisotropic scattering under an external field in the same range. Furthermore, the magnetization curve of the Fe 3 O 4 ferrofluids and nanopowders exhibited a proper superparamagnetic character at room temperature with the respective saturation magnetization of 4.4 emu/g and 34.7 emu/g.

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Section: Resultssupporting

confidence: 78%

Nanostructure and Magnetic Field Ordering in Aqueous Fe3O4 Ferrofluids: A Small-Angle Neutron Scattering Study

et al. 2019

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“…Iron sand is extracted using permanent magnets to remove impurities. Then, Iron sand was synthesized to obtain Fe2O3 nanoparticles using the coprecipitation method as in previous studies [12]. The synthesis of ZnO nanoparticles uses the coprecipitation method.…”

Section: Experimental Methodsmentioning

confidence: 99%

Fabrication of Bilayer Fe2O3/ZnO Photoanode and its Photoelectrochemical Performance

Abadi

Maryam

Yudyanto

et al. 2020

KEM

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Hematite (Fe2O3) is one of the abundant magnetic materials in nature. Hematite has good absorption ability in the region visible light and good electrochemical stability, which make this material is potential as photoanode for photoelectrochemical (PEC) cells. However, Fe2O3 has some disadvantages such as short hole diffusion length and low hole mobility. Therfore, it is necessarily to combine Fe2O3 with photocatalyst material to improve photoelectrochemical performances. ZnO is ones of photocatalist material with good electron mobility, wide band gaps, cheap and are easily fabricated. The aim of this study is to investigate the performance of bilayer Fe2O3/ZnO as photoanode for photoelectrochemical cell. The bilayer Fe2O3/ZnO was prepared by spin-coating techniques and doctor blade methods. The samples were characterized by X-ray diffarction, and Scanning Electron Microscopy. The performance of photoelectrochemical cell was investigated by Cyclic Voltammetry (CV) under light illumination. The result indicate that bilayer Fe2O3/ZnO has good photoelectrochemical properties.

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“…511), and 62.53° (440). The peak of Fe3O4 and Mn0.3Fe2.7O4 is indicative of a cubic spinel structure with an Fd3m space group [21]. The magnification of the highest peak showed that the peak of Fe3O4 is shifted as far as 0.04° towards the smaller 2θ angle on the Mn0.3Fe2.7O4 peak.…”

Section: Ir Spectra Of Mn03fe27o4/peo/pmma/ac Nanocompositesmentioning

confidence: 96%

Investigations of Crystal Structure and Magnetic Properties of Mn0.3Fe2.7O4/PEO/PMMA/AC Nanocomposites

Wahyuni,

Sunaryono,

Chusna

et al. 2024

JMNM

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The Mn0.3Fe2.7O4/PEO/PMMA/AC nanocomposites were synthesized using co-precipitation and solid-state reaction methods. The Mn0.3Fe2.7O4/PEO/PMMA/AC nanocomposites were success formed. This was confirmed by characterization using FTIR instrument. The Fe-O, C-O, and C-H2 functional groups were the representation of Mn0.3Fe2.7O4, PEO/PMMA, and AC respectively. Investigation of crystal structure was characterized using XRD instrument. According to X-Ray Diffraction analysis, the crystal size was 10.82 nanometers and the peak of AC was detected on 2θ around 24.85o. In addition, the investigation of magnetic properties was characterized using VSM instrument. This result showed that the Mn0.3Fe2.7O4/PEO/PMMA/AC nanocomposites behave as a superparamagnetic material with a saturation magnetization value was around 12.55 emu/gram.

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Contributions of TMAH Surfactant on Hierarchical Structures of PVA/Fe3O4–TMAH Ferrogels by Using SAXS Instrument

Cited by 19 publications

References 45 publications

Nanostructure and Magnetic Field Ordering in Aqueous Fe3O4 Ferrofluids: A Small-Angle Neutron Scattering Study

Nanostructure and Magnetic Field Ordering in Aqueous Fe3O4 Ferrofluids: A Small-Angle Neutron Scattering Study

Fabrication of Bilayer Fe<sub>2</sub>O<sub>3</sub>/ZnO Photoanode and its Photoelectrochemical Performance

Investigations of Crystal Structure and Magnetic Properties of Mn<sub>0.3</sub>Fe<sub>2.7</sub>O<sub>4</sub>/PEO/PMMA/AC Nanocomposites

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