Hydrothermal tuning of the morphology and crystallite size of zeolite nanostructures for simultaneous adsorption and photocatalytic degradation of methylene blue dye

Nassar, Mostafa Y.; Abdelrahman, Ehab A.

doi:10.1016/j.molliq.2017.07.033

Cited by 88 publications

(28 citation statements)

References 68 publications

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“…The zeolites were synthesized through the hydrothermal route, which is a multiphase reaction-crystallization process, as emphasized by several authors [12][13][14][15]20]. This process usually encompasses at least one liquid phase as well as both amorphous and crystalline solid phases.…”

Section: Synthesis Of Zeolite Amentioning

confidence: 99%

Synthesis of Zeolite A from Metakaolin and Its Application in the Adsorption of Cationic Dyes

et al. 2018

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Section: Synthesis Of Zeolite Amentioning

confidence: 99%

Synthesis of Zeolite A from Metakaolin and Its Application in the Adsorption of Cationic Dyes

et al. 2018

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“…The 912 cm -1 peak is an Al-OH band deformation vibration absorption peak. According to the FT-IR spectrum in Figure 4 b, the characteristic zeolite bands appeared coincidentally with the disappearance of halloysite, including the asymmetric and symmetric T-O (T = Si/Al) stretch [38][39][40]. The bands in the region of 500-650 cm −1 are related to the presence of the double rings (D4R and D6R) in the framework structure [41].…”

Section: Resultsmentioning

confidence: 99%

In SituSynthesis of Structural Hierarchy Flowerlike Zeolite and Its Application for Fluoride Removal in Aqueous Solution

Tian

Gan

2019

Journal of Nanomaterials

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A three-dimensional hierarchically structured flowerlike zeolite was synthesized using naturally occurring nanohalloysite (HNT) by hydrothermal methods. Halloysite a hydrated aluminum silicate with nanohollow morphology, microporosity, and environmentally friendly properties was chosen to be the sole precursor. The morphology and structure of the composite that was prepared was characterized using XRD, FT-IR, BET, TG, SEM, HRTEM, and NMR. SEM and HRTEM images indicated that the synthesized zeolite has a flowerlike hierarchical structure, with well-defined edges and uniform pore channels. FT-IR and NMR spectra indicated that different species of silicon and aluminum were present in the synthesized zeolite. The zeolite was applied in fluoride (F-) removal from aqueous solutions. Single-factor studies, including the initial concentration of F-, initial adsorbent concentration, and the effect of pH value on the adsorption properties, were investigated to evaluate the removal behavior of F- by the zeolite. The zeolite exhibited strong adsorption properties for fluoride ions (F-), with an adsorption capacity up to 161 mg g-1. The pseudo-second-order kinetics and Freundlich models were the best fit to the kinetics and isotherm experimental data, respectively.

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“…It can be observed that the final removal efficiency were 95.2%, 86.3%, 76.8%, 64.9% for Cu/A@Et-PMO, while the values were 58.9%, 46.1%, 48.7%, 30.4% over Cu/A as the initial MB concentration increased from 60 mg/L to 200 mg/L. That results could be due to the limited availability of hydroxyl radicals [36]. It also may be ascribed to competitive adsorption among dye molecules on the limited reaction area of catalyst when dealing with high concentration dye [37].…”

Section: Catalytic Performance Of Degradation For Mbmentioning

confidence: 91%

Synthesis and Characterization of Cu Decorated Zeolite A@void@Et-PMO Nanocomposites for Removal of Methylene Blue by a Heterogeneous Fenton Reaction

Zeng

et al. 2018

Preprint

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The development of novel porous composite materials for organic dye degradation and removal has received increasing attention due to water contamination problem. In this paper, hydrothermal synthesized nano zeolite A have been encapsulated with porous periodic mesoporous organosilica (PMO) through a simple modified StÖber method an organosilane-directed growth-induced etching strategy, the obtained yolk-shell structured sample was further functionalized by the impregnation of copper, realizing the composite material with hierarchical porous and catalytic properties. The morphology, porosity and metal content of the zeolite Cu/A and Cu/A@Et-PMO were fully characterized. As compared to the parent material, the composite Cu/A@Et-PMO have an efficient adsorption and catalytic degradation performance on methylene blue (MB), the removal efficiency reached as high as 95% of 60 mg/L MB with 10min. These novel structured porous composites may have great potential for adsorption and degradation application including waste effluents.

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Hydrothermal tuning of the morphology and crystallite size of zeolite nanostructures for simultaneous adsorption and photocatalytic degradation of methylene blue dye

Cited by 88 publications

References 68 publications

Synthesis of Zeolite A from Metakaolin and Its Application in the Adsorption of Cationic Dyes

Synthesis of Zeolite A from Metakaolin and Its Application in the Adsorption of Cationic Dyes

In SituSynthesis of Structural Hierarchy Flowerlike Zeolite and Its Application for Fluoride Removal in Aqueous Solution

Synthesis and Characterization of Cu Decorated Zeolite A@void@Et-PMO Nanocomposites for Removal of Methylene Blue by a Heterogeneous Fenton Reaction

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