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Organic dyes

Tìm thấy 12+ kết quả cho từ khóa "Organic dyes"

Wool-coiled bimetallic oxysulfide MoSrOS catalyst synthesis for catalytic reduction of toxic organic pollutants and heavy metal ions

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Chen, Catalytic reduction of organic and hexavalent chromium pollutants with highly active bimetal CuBiOS oxysulfide catalyst under dark, Separ. Lin, Nanosheet bimetal oxysulfide CuSbOS catalyst for highly efficient catalytic reduction of heavy metal ions and organic dyes, J. Lin, The effect of the Cu þ /Cu 2þ ratio on the redox reactions by nanoflower CuNiOS catalysts, Chem. Liao, Tubular bimetal oxysulfide CuMgOS catalyst for rapid reduction of heavy metals and organic dyes, Appl.

Synthesis and photovoltaic characterization of triarylamine-substituted quinoxaline push–pull dyes to improve the performance of dye-sensitized solar cells

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It is valuable to note that the IPCE spectra of both dyes are in the range between the UV and visible region of the solar spectrum, highlighting the necessity of further efforts on narrowing the band gap of metal-free organic dyes in order to shift the absorption band to the visible and near infrared region..

Visible light photocatalysis of a textile dye over ZnO nanostructures covered on natural diatomite

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Overall, ZnO- diatomite nanocomposite can be applied as an efficient photocatalyst for the visible light photocatalysis of target organic dyes.. as one of the most powerful oxidants, decomposing refrac- tory organic dyes.

Influences of ZnO nanorod arrays on photocatalytic activity of n-ZnO nanorods/p-Si heterostructure

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In which, the photocatalytic one is attracting scientists interest in solving environmental problems, especially in treating dyes from industrial waste water because it can completely mineralize organic dyes to H 2 O, CO 2 and inorganic acids without causing secondary pollution [5]. E-mail address: [email protected] https//doi.org vnumap.4607.

Synthesis and characterization of hexagonal boron nitride used for comparison of removal of anionic and cationic hazardous azo-dye: Kinetics and equilibrium studies

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The FTIR spectra of the hBN and hBN-dye conjugates are given in Figures 2a (for the adsorbed MY dye) and 2b (for the adsorbed VBB dye), where it can be seen that the characteristic peaks of the organic dyes were not observed on the spectra of the hBN-dye conjugates because the hBNs had strong and wide characteristic peaks. However, a slight tilt was observed in the range of 3700 and 2700 cm –1 in the spectrum of the hBN-dye conjugates due to the functional groups of the adsorbed dyes.

CHEMISTRY, ELECTROCHEMISTRY, AND ELECTROCHEMICAL APPLICATIONS

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The electrochemically prepared oxide layers can be either porous or barrier type, the former providing corrosion re- sistance and allowing for coloring the surface with organic dyes, pigment impregnation, or electrolytic deposition of other metals and the latter being dielectric and character- izing the capacity of aluminum electrolyte capacitors..

Activation of peroxymonosulfate by cobaltimpregnated biochar (Co-SCG) for efficient degradation of tetracycline in water

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Magnetic CoFe 2 O 4 nanoparticles supported on titanate nanotubes (CoFe 2 O 4 /TNTs) as a novel heterogeneous catalyst for peroxymonosulfate activation and degradation of organic pollutants. https://doi.org/10.1016/j.jhazmat . CoMoO 4 as a novel heterogeneous catalyst of peroxymonosulfate activation for the degradation of organic dyes. 10.1039/C7RA04761D.. Degradation of antibiotics amoxicillin by Co 3 O 4 ‐catalyzed peroxymonosulfate system. https://doi.org/10.1002/ep.10633..

Dependence of hydrothermal time on structural characteristics and photocatalytic properties of SnO2 nanoparticles

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Yang, Rapid Fabrication of SnO 2 Nanoparticle Photocatalyst: Computational Understanding and Photocatalytic Degradation of Organic Dye, Inorg. 3005–3014, https://doi.org/10.1039/C8QI00688A.. Yıldız, Investigation of Photocatalytic Effect of SnO 2 Nanoparticles Synthesized by Hydrothermal Method on the Decolorization of Two Organic Dyes, Photochem. 267–274, https://doi.org/10.1111/j x..

Synthesis and spectroscopic characterization of new phthalocyanine derivatives: application as photocatalysts for the degradation of Orange G

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Singlet oxygen has been shown to be the active species responsible for the photooxidation of organic dyes or pollutants [6–9].. Synthetic routes for the preparation of 2b, 2c, and 2d..

Molten salt synthesis of gadolinium boride nanocrystals suitable for methyl blue removal

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Apart from these inorganic nanomaterials, the application of metal borides in the removal of organic dyes has attracted attention owing to a variety of unique properties of these inorganic materials including high mechanical strength, thermal and chemical stability, and those with nanostructures are considered ideal adsorbents for their high porosity and large surface areas ( Hang et al., 2018 . Liu et al., 2019 . Wang et al., 2019.

Effects of the hybrid plasmonic Ag/SrTiO3 nanocubes for efficient photo-catalytic of H2 generation and RhB decomposition

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Figure 6: The photo-catalytic performance of the photocatalyst through decomposition of RhB organic dyes.. standing photo-catalytic and yield in H 2 evolution reaction of the Ag/STO photocatalyst in comparison with the pristine STO was observed.

Optimization of the adsorption of a textile dye onto nanoclay using a central composite design

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The physicochemical properties of the sample were determined by XRF, XRD, FT-IR, and N 2 adsorption–desorption.. 2,3 Because of the low biodegradability of organic dyes, conven- tional biological treatments are not efficient enough to degrade organic dyes and treat colored wastewaters;. 13 − 16 Based on the above-mentioned statements, in the present study, montmorillonite of nanosize named nanoclay was considered for the adsorption of Basic Yellow 2 (BY2) dye from aqueous solutions.

Fabrication and characterization of amidoxime-functionalized silica decorated with copper: A catalytic assembly for rapid reduction of dyes

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Fabrication and characterization of amidoxime-functionalized silica decorated with copper: a catalytic assembly for rapid reduction of dyes. The organic components of the contaminated water contain dyes and solvents which are widely used by several industries. Methylene blue (MB) is one of the most common dyes used in the textile, wood, printing, and leather industries.

Synthesis, solvatochromism, and biological activity of novel azo dyes bearing 2-pyridone and benzimidazole moieties

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Azo dyes represent the largest group of colored organic compounds due to the number of variations in the chemical structure and their wide commercial applications. 28 On the other hand, pyridone azo dyes are more abundant. Some of the pyridone azo dyes are commercial products. The tautomerism of the synthesized dyes was also investigated. In addition, a study of the biological activities of the synthesized compounds was performed..

Synthesis, structural characterization, and antimicrobial efficiency of sulfadiazine azo-azomethine dyes and their bi-homonuclear uranyl complexes for chemotherapeutic use

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Preparation of sulfadiazine azo-azomethine dyes. Sulfadiazine azo-azomethine dyes (HL I and HL II ) were prepared according to the following procedures. The different synthetic procedures for preparation of HL I and HL II are presented in Scheme 3.. Procedures for preparation of sulfadiazine azo-azomethines dyes [HL I (n = 2) and HL II (n = 6)].. Synthesis of the metal complexes.

Fabrication of silane-modified magnetic nano sorbent for enhanced ultrasonic wave driven removal of methylene blue from aqueous media: Isotherms, kinetics, and thermodynamic mechanistic studies

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Numerous sorbents were designed and applied such as metal-organic frameworks, zeolites, and activated carbon for removal of dyes from wastewater [12,13]. however, there is always need to design efficient sorbent materials for efficient removal of dyes to overcome such problems in adsorption technology. The synthesized (Fe 3 O 4 @SiO 2 ) nano sorbent was applied for enhanced adsorptive removal of methylene blue by ultrasonic wave driven batch experiments.

Reductant free green synthesis of magnetically recyclable MnFe2O4@SiO2-Ag coreshell nanocatalyst for the direct reduction of organic dye pollutants

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The catalytic performance of the synthesized MnFe 2 O 4 @SiO 2 -Ag was employed on the organic pollutants dyes such as rhodamine B (RhB) and methylene blue (MB). The MnFe 2 O 4 @SiO 2 -Ag has also been investigated as a useful catalyst in the reduction of some organic pollutant dyes.. Synthesis of MnFe 2 O 4 @SiO 2 core-shell nanoparticles. Synthesis of MnFe 2 O 4 @SiO 2 core-shell nanoparticles were simply adopted from the literature [20]. Synthesis of MnFe 2 O 4 @SiO 2 ‐Ag.

Correlation studies of indigenous biofilm forming bacteria for resistance against selected metals, antibiotics and dyes degradation

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With these facts in mind, current research was planned for phenotypic and biochemical identification of indigenous biofilm forming bacteria obtained from different ecological sources, their aptitude towards metal and antibiotic tolerance/resistance, potential to metabolize the provided dyes (sole carbon source) and identify correlation among dyes, antibiotics and metals.. This study determines correlation of biofilm-forming bacteria for selected metals, antibiotics and dyes.

On the azo dyes derived from benzoic and cinnamic acids used as photosensitizers in dye-sensitized solar cells

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In this regard, azo dyes have attracted great attention in recent years, possessing advantages over the rest of the organic photosensitive molecules. The effects of the electron-donating capability of three commonly used units in the DSSC molecule framework, namely hydroxynaphthyl, hydroxyphenyl, and N, N -dimethylphenyl, on photovoltaic performance were compared for the first time.

Simultaneous determination of synthetic dyes in gummy candy using novel mesoporous magnetic graphene oxide@zein aerogel followed by a high performance liquid chromatography diode array detector

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The separation of the pure organic phase remains an essential obstacle in liquid phase extraction methods. The magnetic dispersive solid phase extraction method was reported to extract four dyes while our process could extract eight dyes simultaneously (Wang, Chen et al. extraction of azo dyes, including carmoisine, ponceau 4R, sunset Yellow, and Allura red from food dyes (Jangju, Farhadi et al. 5 Allura Red. 10.49.