Effect of the Size of Particles on Their Adhesion in Composite Polypropylene/SiO2

Монахова, К. З.; Баженов, С. Л.; Kechek’yan, A. S.; Meshkov, I. B.

doi:10.1134/s0965545x21010065

Cited by 3 publications

(2 citation statements)

References 23 publications

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“…Composite formation on rice husk biochar with MnO enhanced surface area structure from 50.936 m 2 /g to 96.047 m 2 /g. This mean particle structure re-composition was reached for a miniature size version, and a pore structure refinement occurred (Monakhova et al, 2021). Corn straw/MnO Pyrolysis @600°C with N 2 ; oven-dried 4 hours Arsenic 14.3618 (Yu et al, 2015) Rice husk/MnO Oven-dried @80°C MG dye 68.534 This work…”

Section: Figure 1 Xrd Plots Of Biochar-based Materialsmentioning

confidence: 83%

Mangan Oxide-assisted in Biochar Improvement and Application in Malachite Green Removal

Emilia,

Hakim,

Mohadi

2023

IJMR

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The adsorption features of rice husk biochar (BC) have been improved by structure refinement due to being composited with manganese oxide (MnO). The composite material formed under low energy (temperature) was identified by X-ray Diffraction (XRD), Fourier Transform Infra-red (FTIR), and Brunauer-Emmet-Teller (BET) Surface Area instrumentation. The composite of BC/MnO analysis of XRD was specialized at 9.48° (110) and 31.42° (111). Functional group investigation of FTIR on BC/MnO composite was detected at 349 cm-1 and 401 cm-1 as manganese oxide vibration on biochar. The improvement in specific surface area is evidenced by BET surface area analysis, with the highest result at 96.047 m2/g. Several analyses on the adsorption work concluded that malachite green adsorption on BC/MnO composite follows the pseudo-second-order model and the Freundlich scheme under spontaneous reaction. Additionally, calculation in adsorption parameters resulted in an adsorption maximum capacity of about 79.365 mg/g with regeneration effectiveness up to 48.170% at the final of the seventh cycle.

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Section: Figure 1 Xrd Plots Of Biochar-based Materialsmentioning

confidence: 83%

Mangan Oxide-assisted in Biochar Improvement and Application in Malachite Green Removal

Emilia,

Hakim,

Mohadi

2023

IJMR

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“…The analysis calculated the surface area as 16.795 m 2 /g with pore volume and diameter of 0.040 cm 3 /g and 2.897 nm, respectively. The composite mechanism has repaired the particle size and pore condition (Monakhova et al, 2021).…”

Section: Resultsmentioning

confidence: 99%

High Efficient of Ca/Al-Graphite for Removal of Direct Orange

Hakim

Vinsiah

Fajri

2023

IJMR

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The layered double hydroxide-based material features of Ca/Al have improved according to the adsorption capacity and structure stabilization by transforming into composite Ca/Al-graphite. The composite was synthesized by co-precipitation method, and the chemical structure was characterized using X-ray Diffraction (XRD), Fourier Transform Infra-red (FT-IR), Brunauer Emmet-Teller (BET) Surface Area, and Thermo-Gravimetry Differential Analyse (TG-DTA). The XRD analysis of Ca/Al-Graphite composite was noticed in 10.205°(003), 18.083°(012), 20.45°(004), 26.532°(002), 44.52°(101), 54.52°(004), and 77.38°(006). The TG-DTA analysis of the composite was noticed at 100°C as water molecule decomposition, 270°C as nitrate decomposition, and 700 and 760°C as graphite decomposition to the oxide form. BET surface area analysis of Ca/Al-Graphite composite achieved the highest surface area at 16.795 m2/g. According to the kinetic parameter, the adsorption of direct orange to composite follows the pseudo-second-order model. The isotherm parameter of direct orange adsorption onto the composite followed the Langmuir model and occurred spontaneously and endothermically. The regeneration study proved the composite effective in 3 cycles by adsorption percentage at the third cycle reached 73.559%.

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Mechanochemical Activation of Superradiance in Paramagnetic Polymer Composites

Aleksandrov

Шевченко

2023

Materials

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The review examines the effect of radio-frequency superradiance during pulsed mechanochemical activation of polymer composites under high pressure. Mechanochemical activation is implemented in three modes: (a) rheological explosion of polymer composite under rapid uniaxial compression, when an elastic wave pulse occurs in a polymer composite sample and implements the physico-chemical transformations leading to the occurrence of a superradiance pulse; (b) parametric mode, when an elastic wave pulse is introduced from the outside through a waveguide into a composite sample; (c) the mode of rapid pressure release, which also leads to the occurrence of a superradiance pulse. Paramagnetic polymer composites—namely polystyrene–binuclear clusters Co(QH)2–O–Co(QH)2 or Mn(QH)2–O–Mn(QH)2, where QH is a ligand based on QH2–3,6-di-tert-butylpyrocatechin)—are considered as objects implementing such processes. These binuclear clusters exhibit the Dzyaloshinskii–Moriya effect, and polymer composites based on them exhibit multiferroic properties. A composite of a molecular magnet in polystyrene matrix (Eu(III)(SQ)3·bipy complex with four unpaired electrons on Eu(III) and on SQ ligands; SQ is 3,6-di-tert-butylquinolate paramagnetic ligand) is also considered. The binuclear clusters and europium complexes form 2D nano-objects in the polymer matrix with a diameter of 50–100 nm and a thickness of ~ 1–2 nm. The review considers the formalisms of Dicke, Lorentz, Landau–Lifshitz–Blombergen and Havriliak–Negami equations, which make it possible to conduct a time–frequency analysis of these processes, to obtain data on the relaxation processes of spin and charge density in objects responsible for the process of radio-frequency superradiation. It is also shown that the analysis of electron spin resonance data allows us to provide a probable quantum chemical scheme for the implementation of the radio-frequency superradiance process. The phenomenon of superradiation has a great deal of potential in such areas as energy-saving technologies, wireless power transmission and storage devices. The technique of studying fast mechanochemical processes considered in the review allows us to investigate the mechanisms of interaction of magnetic and electrical subsystems in multiferroics and molecular magnets, which expands the scientific base for the creation of new functional materials and enables the solving of related problems of condensed matter physics.

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Effect of the Size of Particles on Their Adhesion in Composite Polypropylene/SiO2

Cited by 3 publications

References 23 publications

Mangan Oxide-assisted in Biochar Improvement and Application in Malachite Green Removal

Mangan Oxide-assisted in Biochar Improvement and Application in Malachite Green Removal

High Efficient of Ca/Al-Graphite for Removal of Direct Orange

Mechanochemical Activation of Superradiance in Paramagnetic Polymer Composites

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