Enhancing Photocatalyst Performance of Magnetic Surfaces Covered by Carbon Clouds for Textile Dye Degradation

Heryanto, Heryanto; Tahir, Dahlang

doi:10.1007/s13369-023-08532-y

Cited by 8 publications

(2 citation statements)

References 77 publications

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“…Thus, the probability of electron excitation from a lower energy state to a higher energy state in the electronic structure of the material is increased. Based on equation (10), materials with high ELF intensity are related to their ability to be used as photovoltaic devices due to their ability to capture and convert high-energy photons from sunlight into electricity [57,58].…”

Section: Electron Loss Functionmentioning

confidence: 99%

Uncovering the potential of industrial waste: turning discarded resources into sustainable advanced materials

Rauf,

Heryanto,

Tahir

et al. 2024

Phys. Scr.

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To identify solutions for utilizing industrial wastes (slag, sludge, fly ash, and bottom ash) in the development of pro-environmental systems, this paper reviews existing literature and explores material characterization methods. A review analysis was conducted to uncover their potential, and it was found that many utilizations can be made to recycle them into sustainable materials. Structure characterization, optical-dielectric function, and morphology analysis were analyzed to confirm the recent review. Structural properties are represented by crystallite size and crystallinity, where nickel slag shows the smallest distribution (55±10) nm with the highest crystallinity (25.42%), indicating its association with uniformity of response to external disturbances and micro-structural stability. From the analysis of optical and dielectric functions via Kramers Kronig relation, the widening of ∆(LO-TO) was shown by fly ash and slag indicating stable bonding suitable as x-ray shielding and sensor, while high electron loss functions were shown by sludge and bottom ash indicating high potential electronic transition performance. Based on their chemical and physical properties, these industrial wastes are not limited as construction materials and can even be upgraded to more advanced development materials.

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Section: Electron Loss Functionmentioning

confidence: 99%

Uncovering the potential of industrial waste: turning discarded resources into sustainable advanced materials

Rauf,

Heryanto,

Tahir

et al. 2024

Phys. Scr.

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show abstract

“…In this study, XRD testing was carried out at the Physics Laboratory, Hasanuddin University. This measurement is performed using X-ray diffractometer SHIMADZU 7000 with CuK𝛼 radiation (𝜆 𝐶𝑢 = 1.54 Å) in the range (2𝜃 = 10 -70 °), operation 30 kV and 10 mA [24]. The diffraction measurement results of the test samples were then analyzed using Match and Maud software followed step from our previous study [25,26].…”

Section: Materials Characterization Testingmentioning

confidence: 99%

Proximity Porosity and Crystallinity Analysis as Clay/Nickel Slag Characteristics for Material Stabilization Application

Gaus,

Rauf,

Siregar

et al. 2024

Trends Sci

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Slag nikel is a by-product of nickel ore smelting through the pyrometallurgical process, which contains silica (> 50 %). This suggests that nickel slag, possessing pozzolanic properties, which potentially to be used as a binding material in construction projects dealing with low soil bearing capacity, such as soil improvement for road foundation. Pozzolanic reactions are greatly influenced by the chemical bonds formed between the binding material and the soil, causing mechanical characteristic changes in the soil. This study aims to examine the effect of adding nickel slag to soft soil based on changes in its physical, mechanical and chemical properties. Physical and mechanical property tests were conducted according to ASTM standards, while the changes in chemical structure in the soil were analyzed based on X-Ray Diffraction (XRD) test results. In this study, nickel slag percentages of 3, 6, 9 and 12 % were used based on the weight ratio of clay soil, at optimum water content (wopt). Furthermore, the test specimens were cured for 14, 28 and 56 days to observe the effect of time on the increase of crystal phases in each variation. The results showed that the presence of nickel slag in the soil can affect its physical and mechanical properties. The nickel slag content in the soil of 3, 6, 9 and 12 % reduces the plasticity index by 16.69, 12.02, 8.86 and 6.38 %, respectively. Meanwhile, the density values increased by 10.97, 11.27, 11.68 and 12.01 kN/m3, respectively. The changes in physical and mechanical properties can be explained by the XRD analysis results, showing changes in the spectrum curve and peak intensity of X-Ray Diffraction in the soil with the addition of nickel slag. This explanation clarifies the transformation of the soil’s atomic structure from an amorphous state to a crystalline form, which is stabilized by nickel slag. HIGHLIGHTS The silica-rich nature of nickel slag offers a feasible alternative for chemical soil stabilisation The stabilization of soft soil with nickel slag results in a decrease in the plasticity index and an increase in density Immersion duration shows a changing response for the crystallinity index and porosity of the material GRAPHICAL ABSTRACT

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Structural and shielding effectiveness properties of (NiFe2O4/chopped strands) composites for 6.5–18 GHz applications

Sahin,

Ibrahim,

Emek

et al. 2024

J Mater Sci: Mater Electron

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In this research, a mixed oxide technique was employed to create composite materials comprising NiFe2O4-chopped strands, aimed at evaluating their structural properties and microwave shielding effectiveness. The composites, produced through a hot-pressing process with varying proportions of NiFe2O4 and chopped strands, were integrated with epoxy to enhance their shielding capabilities. X-ray diffraction confirmed the formation of single-phase NiFe2O4, free from secondary phases. Scanning electron microscopy analysis corroborated the presence of cubic crystalline NiFe2O4, without microstructural impurities. The microwave shielding performance of the composites was assessed within the 6.5–18 GHz frequency range using a network analyzer (NA), revealing a minimum shielding effectiveness of − 36.34 dB at 16.56 GHz for a 1.3 mm thick sample. These findings demonstrate the successful fabrication of NiFe2O4-chopped strands composites with tunable microwave shielding properties, achieved by adjusting the NiFe2O4 content, allowing for tailored performance across various frequency bands.

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Enhancing Photocatalyst Performance of Magnetic Surfaces Covered by Carbon Clouds for Textile Dye Degradation

Cited by 8 publications

References 77 publications

Uncovering the potential of industrial waste: turning discarded resources into sustainable advanced materials

Uncovering the potential of industrial waste: turning discarded resources into sustainable advanced materials

Proximity Porosity and Crystallinity Analysis as Clay/Nickel Slag Characteristics for Material Stabilization Application

Structural and shielding effectiveness properties of (NiFe2O4/chopped strands) composites for 6.5–18 GHz applications

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