Photoactive ZnO nanosuspension for intensification of organics contaminations decomposition

Evstropiev, S. K.; Vasilyev, V. N.; Никоноров, Н. В.; Колобкова, Е. В.; Волкова, Н. А.; Boltenkov, I.A.

doi:10.1016/j.cep.2018.10.020

“…The content of the dye in the initial solutions was 9 mg/l. This dye was used earlier in [19][20][21][22][23] to evaluate the photocatalytic properties of materials. In aqueous dye solutions, an intense absorption band with a maximum of λ max = 612 nm is observed.…”

Section: Methodsmentioning

confidence: 99%

Kinetics of adsorption and photocatalytic decomposition of a diazo dye by nanocomposite ZnO-MgO

Bulyga

¹

,

Evstropiev

²

2022

Optics and Spectroscopy

4

0

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The synthesis of ZnO-MgO nanocomposite via modified Pechini method was performed. The crystalline structure and the morphology of nanocrystals were studied by X-ray diffraction analysis and scanning electron microscopy. The study on the kinetics of diazo dye adsorption and its photocatalytic decomposition on the surface of nanocomposite was performed. It was shown that the rate of adsorption process in aqueous solution is described by a kinetic equation of the first order. The application of the nanocomposite allows to significantly increase the efficiency of UV water treatment and its purification from the dye. However, a brief deviation of experimental data on the rate of photocatalytic degradation from the values of the widely used kinetic equation of the first order is observed. Keywords: photocatalysis, adsorption, ZnO-MgO, nanocomposite, kinetics.

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“…Для фотообработки растворов использовалась ртутная лампа высокого давления ДРШ-250. Спектр излучения этой лампы был приведен в [27].…”

Section: материалы и методыunclassified

Фотокаталитические и адсорбционные свойства нанокомпозитов ZnO/ZnAl-=SUB=-2-=/SUB=-O-=SUB=-4-=/SUB=-/Cu

Тинку¹,

Шелеманов²,

Евстропьев³

2023

Оптика И Спектроскопия

0

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Experimental results on photobleaching of Chicago Sky Blue diazo dye solutions using ZnO/ZnAl2O4/Cu photocatalytic nanocomposites are presented. Data on the crystal structure and morphology of these nanocomposites obtained by the polymer-salt method are presented. The results of studies of the kinetics of the processes of photobleaching of dye solutions and its adsorption on the surface of powdered nanocomposites showed that the experimental data correspond to known kinetic models using the first and second order rate equations for these processes.

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“…Содержание красителя в исходных растворах составляло 9 mg/l. Этот краситель применялся ранее в [19][20][21][22][23] для оценки фотокаталитических свойств материалов. В водных растворах красителя наблюдается интенсивная полоса поглощения с максимумом λ max = 612 nm.…”

Section: материалы и методыunclassified

Кинетика адсорбции и фотокаталитического разложения диазокрасителя нанокомпозитом ZnO-MgO

Булыга¹,

Евстропьев²

2022

Оптика И Спектроскопия

5

0

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The synthesis of ZnO-MgO nanocomposite via modified Pechini method was performed. The crystalline structure and the morphology of nanocrystals were studied by X-ray diffraction analysis and scanning electron microscopy. The study on the kinetics of diazo dye adsorption and its photocatalytic decomposition on the surface of nanocomposite was performed. It was shown that the rate of adsorption process in aqueous solution is described by a kinetic equation of the first order. The application of the nanocomposite allows to significantly increase the efficiency of UV water treatment and its purification from the dye. However, a brief deviation of experimental data on the rate of photocatalytic degradation from the values of the widely used kinetic equation of the first order is observed.

show abstract

Photoactive ZnO nanosuspension for intensification of organics contaminations decomposition

Cited by 28 publications

References 48 publications

Kinetics of adsorption and photocatalytic decomposition of a diazo dye by nanocomposite ZnO-MgO

Kinetics of adsorption and photocatalytic decomposition of a diazo dye by nanocomposite ZnO-MgO

Фотокаталитические и адсорбционные свойства нанокомпозитов ZnO/ZnAl-=SUB=-2-=/SUB=-O-=SUB=-4-=/SUB=-/Cu

Кинетика адсорбции и фотокаталитического разложения диазокрасителя нанокомпозитом ZnO-MgO

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