Intensification of photodecomposition of organics contaminations by nanostructured ZnO-SnO2 coatings prepared by polymer-salt method

Evstropiev, S. K.; Lesnykh, L.V.; Karavaeva, A. V.; Никоноров, Н. В.; Орешкина, К. В.; Mironov, L. Yu.; Maslennikov, Sergei Y.; Колобкова, Е. В.; Vasilyev, V. N.; Багров, И. В.

doi:10.1016/j.cep.2019.107587

Cited by 19 publications

(37 citation statements)

References 71 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The polymer-salt method which is applied for the synthesis of different nanoparticle [13,14,28,29] was used in this study. The aqueous solutions of Zn(NO3)2, Al(NO3)3 and CuSO4 were used as raw materials for the nanocomposites synthesis.…”

Section: Methodsmentioning

confidence: 99%

Porous ZnO-ZnAl2O4-CuO Nanocomposites Synthesized by Polymer-Salt Method for Photocatalytic Water Purification and Splitting

Shelemanov¹,

Tincu²,

Evstropiev³

et al. 2023

Preprint

View full text Add to dashboard Cite

In this work, the adsorption and photocatalytic properties of ZnO-ZnAl2O4 nanosized composites synthesized by the polymer-salt method have been studied. To evaluate the efficiency of adsorption, experiments were carried out on the decolorization of aqueous solutions of the Chicago Sky Blue diazo dye. The adsorption process is divided into two stages, at the first stage the dye is rapidly adsorbed on the outer surface of the composite particles, at the second stage the dye diffuses into the pores of the material. It was noted that the rate of photocatalytic decomposition of the dye is higher than the rate of the adsorption process, which indicates the occurrence of photocatalytic decomposition of dye molecules both on the surface of the composites and in the liquid phase. With an increase in the light intensity, the photocatalytic process is significantly accelerated, linearly at low intensities, and at high intensities the dependence becomes a power law.

show abstract

Section: Methodsmentioning

confidence: 99%

Porous ZnO-ZnAl2O4-CuO Nanocomposites Synthesized by Polymer-Salt Method for Photocatalytic Water Purification and Splitting

Shelemanov¹,

Tincu²,

Evstropiev³

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…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%

“…For a formal description of the photodecomposition kinetics of various organic substances, the first-order kinetic equation is widely used [29][30][31][32][33][34][35][36][37][38] which after integration is as follows…”

Section: Kinetics Of Dye Photolysis In the Liquid Phasementioning

confidence: 99%

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

Bulyga

Evstropiev

2022

Optics and Spectroscopy

View full text Add to dashboard Cite

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.

show abstract

“…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

“…Для формального описания кинетики фоторазложения различных органических веществ широко использует-ся [29][30][31][32][33][34][35][36][37][38] кинетическое уравнение первого порядка…”

Section: кинетика фотолиза красителя в жидкой фазеunclassified

Кинетика адсорбции и фотокаталитического разложения диазокрасителя нанокомпозитом ZnO-MgO

Булыга¹,

Евстропьев²

2022

Оптика И Спектроскопия

View full text Add to dashboard Cite

show abstract

Intensification of photodecomposition of organics contaminations by nanostructured ZnO-SnO2 coatings prepared by polymer-salt method

Cited by 19 publications

References 71 publications

Porous ZnO-ZnAl<sub>2</sub>O<sub>4</sub>-CuO Nanocomposites Synthesized by Polymer-Salt Method for Photocatalytic Water Purification and Splitting

Porous ZnO-ZnAl<sub>2</sub>O<sub>4</sub>-CuO Nanocomposites Synthesized by Polymer-Salt Method for Photocatalytic Water Purification and Splitting

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

Кинетика адсорбции и фотокаталитического разложения диазокрасителя нанокомпозитом ZnO-MgO

Contact Info

Product

Resources

About