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S 4160 scanning electron microscope

Manufactured by Hitachi

The Hitachi S-4160 is a scanning electron microscope designed for high-resolution imaging. It features a tungsten thermal field emission electron source and provides magnification up to 300,000x. The S-4160 is capable of scanning a sample surface and generating detailed, high-quality images.

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3 protocols using s 4160 scanning electron microscope

1

Analytical Characterization of Novel Adsorbent

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FTIR and SEM were applied to examine the new adsorbent (a Hitachi S-4160 scanning electron microscope). The concentration of metal ions was determined via inductively coupled plasma (ICP-AES) (Varian liberty 150 XL).
The Perkin-Elmer Frontier was applied to take FT-IR spectra. Dimethyl sulfoxide (DMSO) or chloroform (CDCl3) were applied as solvent materials for routine spectra of NMR at ambient temp. on an Avance TM 400 spectrometer. It is important to note that all chemical modifications are stated in ppm δ relative to the trace resonance of protonated chloroform, CDCl3 dimethyl sulfoxide, DMSO, and external 85% aqueous H3PO4, as (δ 7.25 ppm), (δ 77.0 ppm), or (δ 2.50 ppm), (δ 39.51 ppm) and (δ 0.0 ppm), respectively.
A mass spectrum was examined by using a GC Finnigan MAT SSQ-7000 type of mass spectrometer. The progress of the reactions and examination of the compound’s purity was completed. The latter was done via thin Layer Chromatography (TLC) on silica gel-precoated aluminium sheets (Type 60, F 254, Merck, Darmstadt, Germany) with an eluent of petroleum ether (60–80 °C)/ethyl acetate, and the spots were identified by exposure to UV light at a lamp at λ254 nm for several seconds. The chemical names of the synthesized chemicals are designated using the IUPAC nomenclature. Conventional drying and purification processes were utilized.
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2

Comprehensive Characterization of Sample

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A variety of analytical methods were employed in the experimental examination of the sample. We performed the scanning electron microscopy (SEM) using the HITACHI, S-4160 scanning electron microscope. The Philips CM 120 microscope was used for the analysis involving transmission electron microscopy (TEM). The Thermo Nicolet 370 instrument, a product of Thermo Fisher in the USA, was used to acquire ATR-FTIR spectra, with the measurements being recorded in the range of 400–4000 cm−1, employing a resolution of 4 cm−1 and an average of 64 scans. The surface area and pore size distribution assessment were conducted using the Micromeritics TriStar II Series, GA 30093 instrument from the USA, where N2 gas served as the adsorbate, and measurements were carried out at 77 K. The thermogravimetry analysis (TGA) involved heating the sample from ambient temperature to 800 °C at a rate of 10 °C min−1 under an N2 atmosphere using the STA503 TA instrument. X-ray diffraction (XRD) patterns were obtained within the 2–80° range using CuKα radiation and a Bruker instrument from Germany. Finally, atomic absorption spectroscopy (AAS) (PerkinElmer 2380-Waltham) was utilized to determine the remaining concentrations of As(III) present in the solution.
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3

Magnetite Catalyst Characterization

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Melting points were recorded with an electrothermal 9200 apparatus and are not corrected. 1H NMR (600 MHz) and 13C NMR (150 MHz) spectra were recorded with a Bruker Advance spectrometer with DMSO-d6 as solvent and TMS as an internal standard. TLC was performed on silica gel polygram SILG/UV 254 nm plates. The magnetite properties of the catalyst were analyzed using a vibrating sample magnetometer (VSM) with a varying magnetic field from −10 000 to 10 000 on a BHV-S5 instrument. Mass spectra were recorded with a CH7A Varian mat Bremen instrument at 70 eV electron impact ionization, in m/z (rel%). The X-ray powder (XRD) pattern of the catalyst was recorded with an X-Pert Pro instrument (Cu Kα radiation, λ = 1.54 A) in the region of 2Θ = 20–80°. Morphology was analyzed by SEM (Hitachi S4160 scanning electron microscope). Thermogravimetric analysis (TGA) curves were obtained using a PL-STA 1500 device manufactured by Thermal Sciences with a heating rate of 10 °C min−1 over a temperature limited area of 30–1300 °C under N2 atmosphere.
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