Scan electron microscopy

The gold mineralization in the southern region of Tra Nu-Phuoc Thanh was initially discovered and assessed by the Central Geological Division. However, mineralization characteristics and ore-controlling factors in the Tra Nu-Phuoc Thanh area remain inadequately understood. This study conducts a comprehensive synthesis of prior research findings, complemented by the analysis of an additional 50 thin sections, 100 thick sections, SEM scanning electron microscopy, and 10 ICP-MS samples.

10p viwalton 02-07-2024 1 1   Download

The present study investigates the synthesis and analysis of zinc oxide nanoparticles (ZnO NPs) intended for use in electronic devices. ZnO NPs with an average crystallite size of 33 nm and a hexagonal wurtzite structure were produced by the combustion process. Scanning Electron Microscopy (SEM) revealed a densely packed, spherical morphology.

12p visergeyne 18-06-2024 0 0   Download

The magnetic properties of core/shell nanoparticles (NPs) depend on the various parameters, including the magnetic interactions, but these effects have not been well studied. Here, we systematically investigated the structure and magnetic properties of Fe3O4@CoFe2O4 core/shell NPs. X-ray diffraction (XRD), scanning electron microscopy (SEM), and scanning transmission electron microscopy (STEM) confirmed the formation of Fe3O4@CoFe2O4 core/shell NPs.

6p visergeyne 18-06-2024 0 0   Download

In this paper, polyvinyl butyral (PVB) composite coating was prepared with graphene oxide (GO) to improve mechanical properties, corrosion protection, and thermal oxidation stability. Fourier-transform infrared spectroscopy (FT-IR), Thermogravimetric analysis (TGA), Field Emission Scanning Electron Microscopy (FESEM),... were used to examine the results.

9p viambani 18-06-2024 2 0   Download

The HKUST-1 was synthesized through a straightforward methodology, and its structure was confirmed by various characterization employing a range of techniques, including X-ray diffraction (XRD), scanning electron microscopy (SEM) with Energy Dispersive X-ray analysis (EDX), and N2 adsorption/desorption.

8p viambani 18-06-2024 3 0   Download

This work aims to investigate the mechanism of Pd nucleation and growth onto glassy carbon electrode from ChCl/urea/palladium mixture at room temperature using cyclic voltammetry (CV) and chronoamperometry (CA) techniques. Furthermore, X-ray diffraction, scanning electron microscopy and energy dispersive X-ray spectroscopy were used to examine the crystalline structure, morphology and compositions of deposited Pd samples.

14p viambani 18-06-2024 4 1   Download

In this report, SYGO:Eu3+ red phosphor have been successfully synthesized by sol-gel method. The X-ray diffraction results show that the sample has a cubic crystal structure, belonging to the space group Ia3d (230) without any doping. Scanning electron microscopy (FE-SEM) combined with EDS was performed to determine the microstructure and elemental composition of the fabricated phosphor.

9p viambani 18-06-2024 4 1   Download

A facial strategy for the synthesis of hierarchical binary core-branch carbon microspheres (CMS)@α-Fe2O3 is presented. X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), energy-dispersive X-ray spectroscopy (EDX), scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution TEM (HR-TEM), and Brunauer–Emmett–Teller (BET) were used to characterize the structural and morphological properties of the products.

7p dianmotminh02 03-05-2024 2 1   Download

This study presents the adsorption process of methylene blue and other organic pigments in water samples using synthetic materials derived from agricultural waste combined with Fe3O4. The properties of the materials were determined through Fourier transform infrared spectroscopy, scanning electron microscopy, X-ray diffraction, and nitrogen adsorption-desorption isotherm.

10p dianmotminh02 03-05-2024 3 1   Download

In this study, calcite and zeolite minerals, with well-known incombustibility properties, were used together with huntite hydromagnesite as auxiliary minerals to obtain better mechanical properties. In this context, a synergistic effect was created by adding zeolite and calcite to polymer composite systems containing huntite hydromagnesite, and flame retardant polypropylene matrix composites were produced using a twin screw extruder.

8p dianmotminh02 03-05-2024 3 1   Download

In this research work, in order to obtain the deposition behavior of Ni-W-P coating on the Zr-4 surface, electroless Ni-W-P coating at different times was successfully deposited on Zr-4 alloy by an electroless plating technique. It is expected to provide a reliable basic experimental basis for the research of electroless plating of modified zirconium alloy.

11p dianmotminh02 03-05-2024 1 1   Download

In this work, Al-doped ZnO and Fe-doped ZnO nanoparticles have been synthesized through the coprecipitationannealing method to create new and safer UV filters for sunscreen. The effects of metal doping on phase composition, crystal structure, surface morphology, specific surface area, and elemental composition were characterized by X-ray diffraction, Raman spectroscopy, field emission electron scanning microscopy, nitrogen adsorption-desorption experiments and energy-dispersive X-ray spectroscopy, respectively.

8p dianmotminh02 03-05-2024 2 1   Download

In this research, in an attempt to make use of the kaolin resources in Vietnam, we present a synthetic process of zeolite A via hydrothermal from kaolinite, together with the modification process of zeolite A using different metallic cations. The characteristics of the prepared zeolite LTAs such as chemical composition and crystalline structure, as well as their catalytic activity in the methanation reaction of carbon dioxide (CO2) to methane (CH4) were extensively investigated.

8p dianmotminh02 03-05-2024 3 1   Download

In this study, a facile synthesis and grafting method is reported for tetradentate Cu(II) Schiff base complex onto the surface of graphene oxide (GO). The Schiff base Cu-complex was synthesized through the condensation reaction between 2,3-diamino pyridine and 2-hydroxy-1-naphthaldehyde, followed by the addition of Cu(II) ion to afford N2O2-Cu(II) complex.

17p dianmotminh02 03-05-2024 3 1   Download

The present works deals with the preparation of bioadsorbent from the dried mature leaves of Water hyacinth plant (Eichhornia crassipes) that can be used for removal of cationic contaminants, Pb2+ and Cu 2+ from spiked water.

15p dianmotminh02 03-05-2024 3 1   Download

The material’s structure was analyzed through X-ray diffraction and scanning electron microscopy. The fabricated materials consist of NiTiO3 with a rhombohedral phase structure and CoFe2O4 with a cubic structure. The effect of sintering temperature and dwell time on the phase, microstructure, and ferroelectric properties of the ceramics was examined.

12p dianmotminh02 03-05-2024 2 1   Download

The kinetic study was also carried out by studying the adsorption process at different temperatures using these two adsorbents to find the rate of adsorption process, its mechanism and to determine different thermodynamic parameters. For this purpose, different kinetic models were used which include film diffusion, particle diffusion, intraparticle diffusion, Elovich, Lagergren pseudo first order, Lagergren pseudo second order, simple first order and second order equations.

17p dianmotminh02 03-05-2024 2 1   Download

CuO nanoparticles were synthesized by alcohol-assisted hydrothermal method at various pH values, using sodium hydroxide as a precursor for pH control. The chemical composition, morphological and structural properties of the obtained CuO nanoparticles were investigated by the Raman and energy-dispersive X-ray spectroscopies, the field-emission scanning electron microscopy, and the X-ray diffraction.

12p dianmotminh02 03-05-2024 2 1   Download

This paper reports on the extraction of microcrystal cellulose from cotton fiber and their application as a reinforcing agent in NR matrix. Microcrystalline cellulose was also grafted with maleic anhydride (MA) so that grafted one can improve interfacial interaction between cellulose and natural rubber. Fillers were incorporated to block natural rubber by two-roll mill dry mixing.

8p dianmotminh02 03-05-2024 2 1   Download

The 3D printing PMMA/ZrO2 filaments with a diameter of 1.75±0.05 mm were fabricated by using a single-screw extruder at temperatures of four heating zones of 190, 200, 210, and 210°C. Testing samples were prepared from the extruded filaments by using a fusion deposition modeling 3D printer and a Haake MiniJet piston injection molding machine. Fourier transform infrared spectroscopy, mechanical properties, field emission scanning electron microscopy (FESEM), differential scanning calorimetry, and thermogravimetric analysis of the filaments were investigated.

9p dianmotminh02 03-05-2024 1 1   Download