Sonophotocatalytic degradation of eriochrome black-T dye in water using Ti grafted SBA-15

Gobara, Heba M.; El‐Salamony, Radwa A.; Hassan, Salah A.

doi:10.1007/s10934-016-0190-3

Cited by 28 publications

(9 citation statements)

References 39 publications

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“…According to Kruk and co-authors [23], the weight loss in SBA-15 can be explained, firstly, by the decomposition and desorption of the polymeric template, and secondly, by the evaporation of water. The obtained data are in agreement with previously published works [21][22][23].…”

Section: Adsorbents' Characterizationsupporting

confidence: 93%

“…At a temperature of 1100 • C, the percentage of weight loss was approximately 20% for both sorbents. In the SBA-15 sorbent, shallow endothermic peaks in the region of 200-400 • C and in ETS-10 sorbent at 180 • C could be explained by the removal of the hydration H 2 O present on the surface and inside the pores [21]. A sharp endotherm observed at 770 • C in ETS-10 sorbent indicates the melting or phase transformation of sorbent [22].…”

Section: Adsorbents' Characterizationmentioning

confidence: 95%

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Sorption of Ce(III) by Silica SBA-15 and Titanosilicate ETS-10 from Aqueous Solution

Zinicovscaia

Yushin

Humelnicu

et al. 2021

Water

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The adsorption capacity of two sorbents, silica SBA-15 and titanosilicate ETS-10, toward Ce(III) was tested. The obtained sorbents were characterized using X-ray diffraction, nitrogen adsorption-desorption, Scanning electron microscopy, and Fourier-transform infrared spectroscopy. The effects of solution acidity, cerium concentration, time of contact, and temperature on Ce(III) sorption were investigated. The maximum Ce(III) removal by silica SBA-15 was achieved at pH 3.0 and by titanosilicate ETS-10 at a pH range of 4.0–5.0. The Freundlich, Langmuir, and Temkin isotherm models were applied for the description of equilibrium sorption of Ce(III) by the studied absorbents. Langmuir model obeys the experimentally obtained data for both sorbents with a maximum sorption capacity of 68 and 162 mg/g for silica SBA-15 and titanosilicate ETS-10, respectively. The kinetics of the sorption were described using pseudo-first- and pseudo-second-order kinetics, Elovich, and Weber–Morris intraparticle diffusion models. The adsorption data fit accurately to pseudo-first- and pseudo-second-order kinetic models. Thermodynamic data revealed that the adsorption process was spontaneous and exothermic.

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Section: Adsorbents' Characterizationsupporting

confidence: 93%

Section: Adsorbents' Characterizationmentioning

confidence: 95%

Sorption of Ce(III) by Silica SBA-15 and Titanosilicate ETS-10 from Aqueous Solution

Zinicovscaia

Yushin

Humelnicu

et al. 2021

Water

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“…In fact, this work is the first report on sonophotocatalysis of Mn 2+ :ZnS Qds for SDB dye removal from wastewater. The results show that the photocatalytic activity of Qds remarkably improved with the use of ultrasound, compared to another study dealing with sonophotocatalysis, as well as the other conventional methods for the removal of SDB molecules from an aqueous solution [52][53][54][55][56][57].…”

Section: Introductionmentioning

confidence: 86%

Solochrome Dark Blue Azo Dye Removal by Sonophotocatalysis Using Mn2+ Doped ZnS Quantum Dots

Patel¹,

Singh²,

Jain³

et al. 2021

Catalysts

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This work investigates the degradation of the azo dye solochrome dark blue (SDB) by measurement of the photocatalytic, sonocatalytic and sonophotocatalytic activities, under low ultrasonic frequency (40 kHz) and UV-C (254 nm) light, using Mn-doped ZnS semiconductor quantum dots (Mn2+:ZnS Qds) as catalysts, prepared by a simple chemical precipitation procedure. In order to study the different morphological and optical crystal properties, various characterization techniques were used, such as high resolution transmission electron microscopy, scanning electron microscopy, energy dispersive X-ray analysis, X-ray diffraction, N2 adsorption-desorption at −196 °C and ultraviolet-visible spectroscopy. The average particle size of the semiconductor Qds was in the range of 3–4 nm. The optimal parameters affecting dye degradation, such as the catalyst loading, solution pH, time of irradiation, initial concentration of dye, dopant concentration, ultrasonic power and frequency effect were evaluated. The synthesized catalytic material exhibited a high activity for sonophotocatalytic degradation of SDB (89%), larger than that observed for sonocatalysis (69.7%) or photocatalysis (55.2%) alone, which was due to the improved electron-holes separation, formation of more reactive radicals and enhancement of the active surface area. Qds showed good stability and reusability after five repeated cycles. Finally, the degradation products were identified by liquid chromatography-mass spectrometry (LC-MS).

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“…Tungsten is widely used for the metathesis and isomerization of alkenes, selective oxidation of unsaturated compound, dehydrogenation of alcohols and hydrodesulfurization and hydrocracking of heavy fractions in the petroleum chemistry, the subject most heavily researched. In addition, research groups have attempted to synthesize mesoporous tungsten oxide materials or incorporate tungsten into nonsiliceous mesostructured materials (TiO 2 ) and siliceous mesoporous molecular sieves (e.g., silica, M41S, SBA-n) by impregnation, cogelation, insertion, or grafting (17) . In these materials, the structure of the nonsupported tungsten oxide mesoporous materials is not stable and will collapse on calcination.…”

Section: Transition Metal Incorporationmentioning

confidence: 99%

Synthesis,Mechanisms and Different Applications of Mesoporous Materials Based on Silica and Alumina

Gobara

2016

Egypt. J. Chem.

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ILICATE mesoporous materials have received widespread interest …..because of their potential applications. These novel materials, prepared either by soft-or hard-templating syntheses, become more and more important in many fields of science and technology such as adsorption, catalysis, separations, environmental processes, nanotechnology and biotechnology. According to IUPAC definition inorganic solids that contain pores with diameter in the size range of 2-50 nm are considered mesoporous materials, They also possess extremely high surface areas (>700 m 2 g −1) and narrow pore size distributions. This article review shows the current state of art and outlines the recent patents in mesoporous materials research in three general areas: synthesis, various mechanisms involved for porous structure formation and applications of mesoporous materials based on silica and alumina.

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Sonophotocatalytic degradation of eriochrome black-T dye in water using Ti grafted SBA-15

Cited by 28 publications

References 39 publications

Sorption of Ce(III) by Silica SBA-15 and Titanosilicate ETS-10 from Aqueous Solution

Sorption of Ce(III) by Silica SBA-15 and Titanosilicate ETS-10 from Aqueous Solution

Solochrome Dark Blue Azo Dye Removal by Sonophotocatalysis Using Mn2+ Doped ZnS Quantum Dots

Synthesis,Mechanisms and Different Applications of Mesoporous Materials Based on Silica and Alumina

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