Abstract: Synthesis conditions are optimized to obtain η-phase/zeolite and Hombifine N/zeolite nanocomposites by the modified cold-impregnation method (method 1), which consists of the codispersion of the samples containing the η-phase or Hombifine N with nano-anatase in a dilute KOH solution, and Beta(25) and ZSM-5 zeolites with different modulus, MOR and Y, for the first time, as well as by the TiO2/zeolite in situ method (method 2), which consists of the addition of zeolites into the reaction mixture during the synthesis of titanium dioxide. The starting components and nanocomposites are characterized by different methods, such as wide- and small-angle Х-ray scattering, scanning electron microscopy, and low-temperature nitrogen adsorption (the Brunauer–Emmet–Teller method). The interaction between nanosized titanium dioxide (NTD) and zeolites (except Y) during the formation of the NTD/zeolite nanocomposite (method 2) and the η-phase/MOR nanocomposite (method 1) is revealed, and the presence of NTD in the nanocomposites in nanocrystalline (Hombifine N/zeolite) or amorphous (η-phase/Beta(25) and η-phase/ZSM- 5(300)) states is established. It is found that the use of microwave and ultrasonic treatment upon the synthesis of the nanocomposite gives rise to the uniform distribution of spherical particles in the samples; furthermore, they are the same size (η-phase/ZSM-5(12), η-phase/ZSM-5(300), and η-phase/Y) or smaller (η-phase/MOR, η-phase/Beta(25), and η-phase/ZSM-5(40)) when compared to the original η-phase. The size of spherical particles in the η-phase/ZSM-5(40) nanocomposite is comparable with the starting ZSM-5(40) zeolite. It is found that the preparation of nanocomposites by method 2 leads to an increase in the specific surface for the NTD/ZSM-5(12) and NTD/Y nanocomposites and to a decrease in the specific surface for the remaining nanocomposites (most significantly for NTD/MOR) when compared to the zeolite matrix, and promotes the high adsorption capacity of the NTD/zeolite nanocomposites with regard to the extraction of the P(V) ions from the model aqueous system with the maximum value (99.48%) for the NTD/MOR nanocomposite.

Cite: Kravchenko G.V. , Domoroshchina E.N. , Kuzʹmicheva G.M. , Gaynanova A. , Amarantov S.V. , Pirutko L.V. , Tsybinsky A.M. , Sadovskaya N.V. , Kopylova E.V.
Zeolite-Titanium Dioxide Nanocomposites: Preparation, Characterization and Adsorption Properties
Nanotechnologies in Russia. 2016. V.11. N9-10. P.579-592. DOI: 10.1134/S1995078016050098 WOS Scopus РИНЦ AN OpenAlex

Original: Кравченко Г.В. , Доморощина Е.Н. , Кузьмичева Г.М. , Гайнанова А.А. , Амарантов С.В. , Пирютко Л.В. , Зыбинский А.М. , Садовская Н.В. , Копылова Е.В.
Нанокомпозиты цеолит-диоксид титана: получение, характеризация,адсорбционные свойства
Российские нанотехнологии. 2016. Т.11. №9-10. С.47-56. RSCI РИНЦ

Dates:

Submitted:	Feb 12, 2016
Accepted:	Jun 14, 2016
Published print:	Sep 1, 2016
Published online:	Oct 20, 2016

Identifiers:

Web of science:	WOS:000410420500009
Scopus:	2-s2.0-84991833018
Elibrary:	27586760
Chemical Abstracts:	2016:1706723
OpenAlex:	W2539324137

Citing:

DB	Citing
Web of science	16
Scopus	16
Elibrary	15
OpenAlex	18

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