New Composites Based on Zeolites (H-Beta, H-ZSM-5) and Nanosized Titanium(IV) Oxide (Anatase and
η-phase) Doped by Ni, Ag, V with Photocatalytic, Adsorption and Bactericidal Properties
Научная публикация
| Общее |
Язык:
Английский,
Жанр:
Статья (Full article),
Статус опубликования:
В печати (In Press),
Оригинальность:
Оригинальная
|
| Журнал |
New Journal of Chemistry
ISSN: 1144-0546
, E-ISSN: 1369-9261
|
| Вых. Данные |
Год: 2021,
DOI:
10.1039/d0nj04286b
|
| Ключевые слова |
Multifunctional nanocomposites, antimicrobial and adsorption properties, photocatalysis, zeolites, titanium(IV) oxide |
| Авторы |
Gainanova Asia
1
,
Domoroshchina Elena N
1
,
Kuzmicheva Galina
1
,
Khramov Evgeny
2
,
Chumakov Ratibor
2
,
Gotovtsev Pavel
2
,
Pirutko Larisa V
3
,
Zybinskiy Andrey
4
,
Yashina Nataliya
5
|
| Организации |
| 1 |
MIREA - Russian Technological University, Moscow
|
| 2 |
National Research Centre "Kurchatov Institute"
|
| 3 |
Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy ofSciences
|
| 4 |
N. M. Fedorovsky All-Russian Scientific Research Institute of Mineral Resources
|
| 5 |
Peoples' Friendship University of Russia
|
|
Информация о финансировании (1)
|
1
|
Министерство науки и высшего образования Российской Федерации
|
0706-2020-0026
|
New NT:M/zeolite composites with functional nanoparticles of titanium(IV) oxides NT (-phase and anatase) have been prepared by introducing nitrates with dopant metals (M = Ag, Ni, V) and zeolites (H-Beta and Н-ZSM-5) within the process of NT synthesis during the hydrolysis of TiOSO4nH2O. Prepared composites have been characterized by X-ray diffraction, XAS-method, XPS-spectroscopy, UV-Vis diffuse reflectance spectra, Brunauer-Emmett-Teller and chemoluminescence methods. The greatest photodegradation rate constants (visible light radiation) were achieved in the reaction of thiamethoxam pesticide and difenoconazole fungicide oxidation in the presence of NE:Ni/H-Beta (NE – -phase with composition TiO2-xnH2O), i.e. k=0.0270 min-1 and k=0.0147 min-1 respectively, that is 2.5 times higher than the k value obtained for the commercial anatase Hombifine N (UV-irradiation). A relationship between a photocatalytic activity (PCA) and the NT:zeolite ratio, the type and concentration of M, the type of NT and zeolite, the content of OH groups and the Reactive Oxigen Species (radical anions •OH, •О2¯ and Н2О2) on the surface, and the composition and structure of the decomposed pollutant have been found. The decisive role of the composition of the volume and surface of nanocomposites in the realization of PCA has been noted. The adsorption (removal of P(V), As(V), Se(VI) ions from aqueous solutions) and antimicrobial activities (against bacteria Staphylococcus epidermidis, Bacillus antracoides, Escherichia coli) of the composites NT:M/zeolite, in the absence of light emission, have been studied for the first time and their high performance has been demonstrated: the removal degrees of P(V), As(V), Se(VI) ions from aqueous solutions in the presence of all composites were more than 99% and the inhibition growth zone of composites NA:Ag/zeolite were > 13 mm. New composites could be recommended for preparing the wound dressings, antiseptic ointments for external use and water filters.