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Several aspects of plant-based titanium oxide nanoparticle production, characterization, and mechanism degradation of Methylene blue dye of plant-based titanium oxide nanoparticles and the modification of nanoparticle properties using various parts of the plant have been explored in this study. The paper also discusses several techniques used for the manufacture of titanium dioxide nanoparticles and their effectiveness, as well as drawbacks in detail. Besides, the spectroscopic and microscopic procedures used in characterization of green prepared titanium nanoparticles have been described in detail. In addition, it considered the modified method of photocatalytic degradation of organic pollutants in aqueous medium in the presence of visible and ultraviolet light to mineralize the organic pollutant to less harmful species.
Source link: https://doi.org/10.1016/j.crgsc.2022.100312
Using the Langmuir, Freundlich, Temkin, and Dubinin–Radushkevich isotherm model, equilibrium isotherm data was used to determine the effect of solution pH, initial pollutants concentration, and contact time on adsorption results. As shown by the regression coefficient's values, the Freundlich isotherm model provided the most accurate representation of the experimental results for both pollutants. Natural clay, according to the authors, is an excellent adsorbent for removal of Ni ions and methylene blue dye from aqueous solution in a single go.
To adsorb methylene blue dye from an aqueous solution, a membrane made of polyethylene terephthalate nanofiber and multi-walled carbon nanotubes composite is used. Several parameters affecting dye adsorption are optimized for maximum removal effectiveness by using the Taguchi L25 Orthogonal Array scheme. The adsorbent dose is the second most affected, followed by the MB dye initial concentration of 5. 91%, and the least affected is the contact time.
Source link: https://doi.org/10.3390/w14081242
Dendritic Mesoporous Silica Nanoparticles are regarded as the best at the adsorption of unfavorable chemical compounds and biological pollutants. The extraction of FA-DMSN was three times more cost-effective than undiluted DMSN materials, according to the experimenter. Langmuir isotherm fitted the experimental findings to a correlation coefficient value of 0. 99. In addition, the large pore diffusion model demonstrated a rapid intra-particle diffusion, which could be attributed to the presence of the large pore's channels. Secondly, the quick adsorption of MB molecules, as well as the low cost and ease of FA-DMSN manufacture, makes the finished product an effective adsorbent for water remediation.
Source link: https://doi.org/10.3390/pr10040705
TiO 2 /carbonized waste rabbit fibers nanocomposites with the hierarchical microporous/mesoporous structure were produced as a result of a combination of carbonization, immersion, and calcination techniques using tetrabutyl titanate as the titanium source and waste rabbit hair as the carbon source. Based on several characterization methods and methylene blue photodegradation studies, the TiO 2 /CRFs composite's physical and catalytic activity were investigated. The improved photocatalytic results of TiO 2 /CRFs materials is due to the natural carbon and nitrogen element doping of TiO 2 /CRFs and its morphology, which reduces photosynthesis of photogenerated electron-hole pairs and narrows the TiO 2 band gap, and reduces the TiO 2 band gap, while multiple reflections of visible light in the pore channels. This paper provides the experimental evidence for the use of waste rabbit biomass carbon composites in photocatalytic degradation field.
Source link: https://doi.org/10.3390/polym14081593
Flax shives and beech wood residues are among the biomass streams that are abundant in Northwest Europe. Both flax shives biochar and beech biochar were enhanced by post treatment of the biochars with citric acid and oxidation of the surface by heating at 250 °C in a muffle oven. For BBC and FSBC, respectively, thermally treated biochars have specific surface areas of 388 m 2 g 1 and 272 m 2 g 1 compared to untreated biochars with 368 and 142 m 2 m 2 g 1. With a good correlation between the experimental and estimated adsorption capacities, both the Langmuir and Freundlich models provide the most accurate fit for both the isotherm results for MB and the CMZ adsorption. Beech biochar is a very promising pollutant adsorbent that only requires a mild, low-cost, and low-environmental impact activation therapy for maximum results, according to the article.
Source link: https://doi.org/10.3390/ma15082824
Secondary contamination of the aqueous environment in conventional oxidation techniques for treatment of polluted waters occurs often due to the addition oxidants generated during the process. In this research for decontamination of methylene blue from waters, Fe/NG catalyst composites without additives were established to avoid this issue. An MB degradation result was also applicable under most acid-base conditions, according to the experiments. The characterization results, as shown by the high MB degradation rate, were obtained from Fe/NG composites resulting in the high MB degradation rate. This report reveals the sensitivity of Fe/NG catalysts that spontaneously produce active species of degrading pollutants in an aqueous environment at normal temperature, providing an effective alternative to treating organic-contaminated waters.
Source link: https://doi.org/10.3390/catal12040388
We successfully loaded nano-CuO on TiO 2 nanomeshes as CuO-TiO 2 nanocomposites via a simple electrodeposition process in order to extend the photocatalytic capacity of TiO 2 nanomeshes. Moreover, CuO-TiO 2 nanocomposites have a higher absorption intensity within the visible light range, more than two times more than those of pure TiO 2 nanomeshes, indicating that the loading of nano-CuO could improve photocatalytic efficiency by the strong visible light absorption.
Source link: https://doi.org/10.3390/catal12040383
Hence, the methylene blue test could be a quick way to determine the composition of unknown earth. Composition of earth is extremely important for example, as shown by the final properties of unfired earth structures. In the case of adsorption ability tests, it was determined what was the maximum capacity of a given clay to adsorb the Methylene Blue dye. The highest adsorption capacity was determined for montmorillonite clay, lower for kaolinite clay, and the lowest for illite clay.
Source link: https://doi.org/10.14311/APP.2022.34.0063
The use of dyes in the textile industry is harmful to aquatic biota and humans. Adsorption techniques using adsorbents such as LDH can be used to eliminate dye pollution caused by dye pollution. The peaks that appear in Mg/Al-chitosan are similar to the constituent material's peak, namely Mg/Al and chitosan, and chitosan's typical peaks. This is shown by FTIR analysis, where the Mg/Al-chitosan spectrum is similar to that in Mg/Al and chitosan. Methylene blue, the most specific dye for the Mg/Al-chitosan adsorbent was used first in this research. Methylene blue production was also ongoing for adsorption reactions such as isotherm adsorption thermodynamics and adsorption thermodynamics as well as a adsorbent regeneration research. Since Mg/Al's modification using chitosan from 84. 746 mg/g to 108. 696 mg/g, the adsorption capacity of Mg/Al increased.
Source link: https://doi.org/10.26554/sti.2022.7.2.170-178
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