Response surface methodology directed synthesis of luminescent nanocomposite hydrogel for trapping anionic dyes

Sharma, Amit Kumar; Priya, .; Kaith, Balbir Singh; Panchal, Sagar; Bhatia, Jaspreet Kaur; Bajaj, Sakshi; Tanwar, Vaishali; Sharma, Nisha

doi:10.1016/j.jenvman.2018.10.038

Cited by 49 publications

(21 citation statements)

References 34 publications

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“…This indicated that the SiO 2 and SDS micelles coating did not cause the phase change in Fe 3 O 4 NPs structure [22]. On the other hand, the sharp and narrow peaks also indicate that SDS micelle-coated Fe 3 O 4 /SiO 2 nanoparticles have high crystallinity and purity [23][24][25].…”

Section: X-ray Powder Diffraction (Xrd)mentioning

confidence: 99%

Synthesis of SDS micelles-coated Fe3O4/SiO2 magnetic nanoparticles as an excellent adsorbent for facile removal and concentration of crystal violet from natural water samples

2019

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In this research, a simple and rapid method for the separation and preconcentration of trace amounts of crystal violet (CV) from aqueous sample solutions by modified magnetic nano-particles (MNPs) has been developed. The modification of magnetite nanoparticles was conducted by tetra ethoxysilane (TEOS) followed by micelles of anionic surfactant (SDS) to enhance the preconcentration of CV. To characterize the shape and structure of the nanoadsorbent, FT-IR and XRD procedures were used. Also, the average size of the synthesized nanoparticles was achieved between 30 and 40 nm by TEM technique. The effects of some important parameters such as: aqueous solution pH, adsorbent dosage, contact time, temperature and desorption conditions on the separation and concentration of CV were investigated. So, under optimal experimental conditions: aqueous solution pH 6, solution temperature = 20 °C, 7 mg of adsorbent, 1 mL of eluent (0.8 mL of acetonitrile + 0.2 mL of acetic acid), the recovery of CV from river water samples was achieved 98.32 ± 0.056% (n = 5) in two short periods of time for extraction (5 min) and elution (2 min). The maximum sorption capacity of the nano-composite was determined to be 16.37 mg/g. Also linear dynamic range and limit of detection were calculated to be 10-2500 ppb and 1.82 ppb, respectively. Finally, the proposed method was successfully applied for the separation and concentration of CV from the real water samples and the results were satisfied.

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Section: X-ray Powder Diffraction (Xrd)mentioning

confidence: 99%

Synthesis of SDS micelles-coated Fe3O4/SiO2 magnetic nanoparticles as an excellent adsorbent for facile removal and concentration of crystal violet from natural water samples

2019

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“…Toxicological information shows that it may cause irritation to the skin and eyes, and ingestion may have several adverse effects on vital organs such as liver and kidneys. Dye inhalation reduces gaseous exchange in the lungs, and its metabolites are highly toxic and carcinogenic 7,8 .…”

Section: Introductionmentioning

confidence: 99%

TiO2 Immobilized on Fibrous Clay as Strategies to Photocatalytic Activity

et al. 2020

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TiO 2 immobilized in Sepiolite (TiO 2 /Sep) was successfully prepared by the sol-gel technique, with titanium isopropoxide as the precursor for the formation of TiO 2 in the anatase phase calcined at 400 °C. The prepared samples were characterized by X-ray diffraction, Fourier Transform Infrared spectroscopy, Scanning Electron Microscopy coupled to energy dispersive spectroscopy, and thermogravimetric analysis. The results showed that TiO 2 /Sep structure was identified in all characterizations, showing the specific peaks, bands, mass loss, and morphology after the impregnation process. Photocatalytic experiments were performed under UV irradiation with various photocatalyst concentrations and pH effects in the reaction. The prepared samples presented 72% photocatalytic efficiency for eosin (EA) dye discoloration after 150 min under UV light. This efficiency was attributed to the radicals generated from the TiO 2 and the high specific surface area, showing that TiO 2 /Sep is promising candidate in the degradation of organic pollutants.

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“…In order to determine the quality description of the model and to know if the model is correct, it is necessary to realize the statistical analysis of the model in its totality. A variance analysis Table 4 (ANOVA) is constructed using the statistical test of Fisher 37,38 . The analysis of variance is to explain the total variation of the response which decomposes into a sum of squares of the variation due to the regression and a sum of squares differences or residuals 31,39 .…”

Section: Statistical Analysis Of the Resultsmentioning

confidence: 99%

Optimization of adsorption of cationic dye from aqueous solution by biochar from artichoke waste using response surface methodology

Ouzidan¹,

Amardo²,

Kouali³

et al. 2020

Mediterr.J.Chem.,

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The use of experimental design and in particular the response surface methodology (RSM) allowed the determination of the influence of the simultaneous effects and the interaction of the operating parameters on the methylene blue removal efficiency. The parameters studied were the initial concentration of the adsorbate, the stirring speed, mass and particle size of the adsorbent. The results show that the application of RSM allows describing the influence of these four experimental parameters on the treatment effectiveness. The second-order model obtained, for the Methylene Blue (MB) removal efficiency was validated by using different statistical approaches. The use of the ANOVA showed that the model is significant and in functional adequacy with the experimental results.

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Response surface methodology directed synthesis of luminescent nanocomposite hydrogel for trapping anionic dyes

Cited by 49 publications

References 34 publications

Synthesis of SDS micelles-coated Fe3O4/SiO2 magnetic nanoparticles as an excellent adsorbent for facile removal and concentration of crystal violet from natural water samples

Synthesis of SDS micelles-coated Fe3O4/SiO2 magnetic nanoparticles as an excellent adsorbent for facile removal and concentration of crystal violet from natural water samples

TiO2 Immobilized on Fibrous Clay as Strategies to Photocatalytic Activity

Optimization of adsorption of cationic dye from aqueous solution by biochar from artichoke waste using response surface methodology

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