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All Journal Indonesian Journal of Chemistry
Mihsen, Hayder Hamied
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Chemical Engineering, Chemistry & Bioengineering Chemistry

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Synthesis of New Dithiocarbamate Derivative Reagent for Micro Extraction and Determination of Iron(II) Ion in Aqueous Solution Shaker, Ivan Malik; Khudhair, Ahmed Fadhil; Mihsen, Hayder Hamied
Indonesian Journal of Chemistry Vol 24, No 4 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.87422

Abstract

The new reagent N-methyl-N-((((4-chlorophenyl)diazenyl)thio)carbonothioyl)aniline (L) was synthesized via the reaction of sodium N-methyl-N-phenyldithiocarbamate with 4-chlorobenzenediazonium salt. The reagent was identified with many techniques, such as CHNS elemental analysis, UV-vis spectroscopy, FTIR spectroscopy, mass spectroscopy, 1H-NMR, and 13C-NMR spectroscopy. The Fe(II) ion was utilized to create a metal complex by reacting 2 mol of reagent with 1 mol of iron(II) chloride. Two approaches that were utilized for M:L ratio determination are mole ratio and Job methods. All of these refer to the 1:2 ratio for the complex. The solid complex was prepared and identified with the previous techniques, and additional electrical molar conductivity, and magnetic susceptibility measurements. A tetrahedral structure for the prepared complex was suggested based on spectroscopic measurements and elemental analysis results. Cloud point extraction was created for the preconcentration and separation of Fe(II) in drug samples by forming a rich phase using Triton X-114 at 80 °C temperature and pH 5 measurements utilizing flame atomic absorption spectroscopy and UV-vis spectrophotometer at λmax 635 nm. The calibration curve of Fe(II) was linear in the extent of 0.2–1.0 μg/mL with r2 of 0.996. The detection limit and quantification are 0.0504 and 0.1530 μg/mL.
Synthesis, Characterization, and Application of Magnetic Mesoporous MCM-41-Fe3O4 Core-Shell Nanoparticles in the Removal of Eosin Yellow Dye Alattar, Rawaa Abd; Mihsen, Hayder Hamied; Ahmed, Luma Majeed
Indonesian Journal of Chemistry Vol 26, No 2 (2026)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.108056

Abstract

Spinel ferrite (Fe3O4) nanoparticles have been produced as a black powder using precipitation and ultrasonic methods. The framework of MCM-41 was built using sodium silicate as the source of silica and CTAB as a template. Fe3O4 was immobilized on MCM-41 using the microwave method at 100 °C for 20 min, yielding MCM-41-Fe3O4 as a brown solid powder. This characterization was performed using FTIR, XRD, BET, TGA, FESEM-EDX, VSM, AFM, and TEM. The FTIR analysis demonstrated that the MCM-41-Fe3O4 had been properly synthesized. Two M−O bond peaks were discovered, one for the (Fe3+−O2−) octahedral site and one for the (Fe2+−O2−) tetrahedral sites. The XRD analyses revealed that MCM-41-Fe3O4 was synthesized with a highly ordered hexagonal building. The particles exhibited a spherical agglomeration and appeared smooth, as observed in TEM and FESEM examinations. The EDX analysis indicates that it was formed purely from Si, Fe, and O, with a weight percentage of 100%. BET analysis indicated that the sample had a relatively high surface area. In terms of a kinetic model, it was determined that a pseudo-second-order model provided the most suitable description. The thermodynamic study revealed that physical adsorption was exothermic and the adsorption process was nonspontaneous.
Co-Authors Ahmed, Luma Majeed Alattar, Rawaa Abd Khudhair, Ahmed Fadhil Shaker, Ivan Malik