Quantitative analysis of diffraction and infra-red spectra of composite cement/BaSO4/Fe3O4 for determining correlation between attenuation coefficient, structural and optical properties

Suryani, Sri; Heryanto, Heryanto; Rusdaeni, Rusdaeni; Fahri, Ahmad Nurul; Tahir, Dahlang

doi:10.1016/j.ceramint.2020.04.170

Cited by 56 publications

(16 citation statements)

References 39 publications

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“…The energy loss function also identified as a plasma frequency as reported in Ref. [65,66,72] from the quantitative analysis of electron spectroscopy [66,73]. The (LO-TO) is important parameters to identified stability of the covalent bond and the lattice match in the ZnO/TiO2 composite [70].…”

Section: Optical Propertiesmentioning

confidence: 89%

“…The optical properties (refractive index (n) and extinction coefficient (k)) were determined from the quantitative analysis of FTIR spectra by applying K-K relation [65][66][67]. For the analysis optical properties, we have used only wavenumber in the range from 860 cm -1 to 1115 cm -1 due to the C=C-C bonding which probably come from the green synthesis methods.…”

Section: Optical Propertiesmentioning

confidence: 99%

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Green Synthesis ZnO/TiO2 for High Recyclability Rapid Sunlight Photodegradation Textile Dyes Applications

Rusman

Heryanto

et al. 2021

Preprint

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Composite ZnO/TiO2 have been successfully synthesized by green synthesis method with various calcination temperature 500oC, 600oC, 700oC, and 800oC (TiO2 concentrations: 2.5 g and 5 g) for photocatalyst application. In this study, Calopogonium mucunoides leaf extract was used as reducing and stabilizing agent. The synthesized composites were characterized by using Fourier Transform Infra-Red (FTIR), X-Ray Diffraction (XRD), and UV-Visible spectroscopy. The XRD spectra shows the hexagonal phase with wurtzite structure of ZnO and anatase for TiO2. The best degradation performance is 98.26% (only 10 min) for ZnO/TiO2 (5 g) with calcination temperature is 800oC. This is due to the highest distance between two optical phonon mode Δ(LO-TO) and lowest attenuating and propagating constant. The composite ZnO/TiO2 shows high potentials photodegradation of organic dyes with the high stable recyclability up to 5 cycles (> 95%) only for every 15 minutes. High potentials for applicability with the concept environmentally friendly principles and stability for circular chemistry, and efficiency of use the energy and chemicals.

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Section: Optical Propertiesmentioning

confidence: 89%

Section: Optical Propertiesmentioning

confidence: 99%

Green Synthesis ZnO/TiO2 for High Recyclability Rapid Sunlight Photodegradation Textile Dyes Applications

Rusman

Heryanto

et al. 2021

Preprint

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“…For example, Hughes et al (1995) used Fourier-transform infrared (FTIR) spectroscopy to determine the cement composition, while Hamza et al (2017) established the impact of the cement type on the resistance of concrete to sulfate attack. Suryani et al (2020) determined the structural and optical properties of cement with the aid of X-ray diffraction (XRD). It included crystal size, microstrain, energy deformation, and stress.…”

Section: Cementmentioning

confidence: 99%

Digital Transformation of Concrete Technology—A Review

Ćwirzeń

2022

Front. Built Environ.

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Digital transformation of concrete technology is one of the current “hot topics” tackled by both academia and industry. The final goal is to fully integrate the already existing advanced concrete technologies with novel sensors, virtual reality, or Internet of things to create self-learning and highly automated platforms controlling design, production, and long-term usage and maintenance of concrete and concrete structures. The digital transformation should ultimately enhance sustainability, elongate service life, and increase technological and cost efficiencies. This review article focuses on up-to-date developments. It explores current pathways and directions seen in research and industrial practices. It indicates benefits, challenges, and possible opportunities related to the digital transformation of concrete technology.

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“…CDs provide efficient electron and hole separation because photoinduced CDs are excellent electron donors and acceptors. [ 105 ] The mechanisms of photocatalysis by CDs shown in Figure 4 are based on the following principles: (a) π‐conjugated CDs can act as sensitizers by donating their photoexcited electrons to the conduction band of metal/metal oxides under visible light irradiation [ 106–108 ] ; (b) CDs can act as an electron reservoir to inhibit e − /h + recombination by accepting photoexcited electrons from metal/metal oxides [ 106,108,109 ] (c) CDs can bond with organic dyes by π–π* interaction that increases the degradation performance; and (d) CDs with upconversion photoluminescence can absorb light in the visible wavelength and emit ultraviolet light to form photoexcited electrons. [ 92 ]…”

Section: Applicationmentioning

confidence: 99%

“…At the surface of the catalyst (CQDs), MB dye adsorbed energy from sunlight and electrons in the valence band were excited to the conduction band of the CQDs and remaining holes in the valence band. [ 106–109 ] Sunlight has an important role in photo‐oxidation and photosensitizing reaction mechanisms in CQDs as efficient photocatalysts. [ 29 ]…”

Section: Applicationmentioning

confidence: 99%

Natural source of carbon dots from part of a plant and its applications: a review

et al. 2021

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Carbon dots (CDs) are carbon nanoparticles with a size of less than 10 nm, and are synthesized from various sources; they have been of great interest to scientists worldwide due to their unique optical, electrical, and chemical properties. Sources of carbon are inexpensive and can be classified as a renewable natural resources. Many researchers use CDs because of their low toxicity, better water solubility, high biocompatibility, and stable photoluminescence. The simple methods for producing CDs are hydrothermal and use inexpensive equipment, have low energy consumption, simple manipulation, and one‐step preparation. Since the discovery of CDs, researchers have used them in various applications such as sensing, bioimaging, drug delivery, and catalysis. In this review, CDs synthesized from natural resources such as samples from herbs, roots, leaves, flowers, and fruit and some applications are described. This review provides a summary of carbon dots that is expected to provide further information for development of new CDs.

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Quantitative analysis of diffraction and infra-red spectra of composite cement/BaSO4/Fe3O4 for determining correlation between attenuation coefficient, structural and optical properties

Cited by 56 publications

References 39 publications

Green Synthesis ZnO/TiO2 for High Recyclability Rapid Sunlight Photodegradation Textile Dyes Applications

Green Synthesis ZnO/TiO2 for High Recyclability Rapid Sunlight Photodegradation Textile Dyes Applications

Digital Transformation of Concrete Technology—A Review

Natural source of carbon dots from part of a plant and its applications: a review

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