Metaloxide Nanomaterials and Nanocomposites of Ecological Purpose

Abstract

The features of the properties and creation of nanocomposite metal oxide materials, especially TiO2, ZnO, SnO2, ZrO2, and Fe3O4, and their applications for ecology are considered in the article. It is shown that nanomaterials based on them are very promising for use in the ecological direction, especially as sorbents, photocatalysts, and sensitive layers of gas sensors. The crystallochemical characteristics, surface structure, and surface phenomena that occur when they enter the water and air environment are given for these metal oxides, and it is shown that they play a significant role in obtaining the sorption and catalytic characteristics of these nanomaterials. Particular attention is paid to the dispersion and morphology of metal oxide particles by which their physical and chemical properties can be controlled. Synthesis methods of metal oxide nanomaterials and ways for creating of nanocomposites based on them are characterized, and it is noted that there are many methods for obtaining individual nanoparticles of metal oxides with certain properties. The main task is the correct selection and testing of parameters. The prospects for the production of metal oxide nanocomposites and their application for environmental applications are noted, which will lead to a fundamentally new class of materials and new environmental technologies with their participation.

Characterization of Commercial TiO2 P90 Modified with ZnO by the Impregnation Method

“…ey can be successfully used in applied ecology, in particular, as catalysts, photocatalysts, and other materials where their unique electrical properties are required [1][2][3][4].…”

Orange G’nin Sulu Çözeltilerden Uzaklaştırılması için α-Fe2O3 Nanopartiküllerinin Adsorban Olarak Kullanılması; Adsorpsiyon, Kinetik ve Termodinamik Özellikleri

“…Yüksek adsorpsiyon kapasitesine sahip ve çözelti ortamından ayrılmada kolaylık sağlayabilen absorbanların üretilmesi son yıllarda çok fazla ilgi çeken konular arasında yer almaktadır (Iconaru et al, 2016;Khan, Pathak, & Fulekar, 2017;Roto, 2018). Özellikle, farklı metal oksitlerin işlevselliğinin geliştirilmesi ve nano boyutta sentezlenmeleri ile kazandıkları yeni fiziksel özelliklerin keşfedilmesi kapsamlı bir şekilde çalışılmıştır (Abdel-Karim, Reda, & Abdel-Fattah, 2020;Dontsova, Nahirniak, & Astrelin, 2019).…”

Enhanced Photocatalytic Activity of TiO2/SnO2 Binary Nanocomposites

“…TiO 2 exists in nature in three modifications: rutile (tetragonal crystal lattice), anatase (tetragonal crystal lattice), and brookite (rhombic crystal lattice). In all cases, crystal structures consist of TiO 6 octahedra [9,10]. Figure 1 shows crystal lattices and structures of TiO 2 modifications.…”