TiO₂-ITO and TiO₂-ZnO nanocomposites: application on water treatment

Abstract

Abstract. One of the most promising ideas to enhance the photocatalytic efficiency of the TiO 2 is to couple this photocatalyst with other semiconductors. In this work, we report on the development of photo-catalytic properties of two types of composites based on TiO 2 -ITO (Indium Tin Oxide) and TiO 2 -ZnO deposited on conventional ceramic substrates. The samples were characterized by X-ray diffraction (XRD) and transmission Electron Microscopy (TEM). The photo-catalytic test was carried out under UV light in order to reduce/oxidize a typical textile dye (Cibacron Yellow). The experiment was carried out in a bench scale reactor using a solution having a known initial dye concentration. After optimization, we found that both nanocomposites exhibit better photocatalytic activity compared to the standard photocatalyst P25 TiO 2 .

Effect of Annealing Temperature on Structural and Optical Properties of ZnTiO3 Perovskite Layers Deposited on Silicon for Photocatalytic Applications

“…[1,2] Photodegradation is one of the most efficient methods for converting organic pollutants into harmless materials such as CO 2 and H 2 O or other species in wastewater. [3,4] The activity of the photodegradation process was found to be catalyzed by interacting with the surface of semiconductor materials, the so-called photocatalysts have gotten a lot of attention in recent years. [4][5][6][7][8] Among the various semiconductors, dioxide Titanium (TiO 2 ) and Zinc oxide (ZnO) are the main candidates in semiconductors based on photocatalysis.…”

“…[3,4] The activity of the photodegradation process was found to be catalyzed by interacting with the surface of semiconductor materials, the so-called photocatalysts have gotten a lot of attention in recent years. [4][5][6][7][8] Among the various semiconductors, dioxide Titanium (TiO 2 ) and Zinc oxide (ZnO) are the main candidates in semiconductors based on photocatalysis. [4,5,[9][10][11][12][13] In this process, TiO 2 and ZnO nanostructures are inexpensive, environmentally friendly, and popular precursors of many functional materials used for optoelectronic, photocatalytic, photonic, and solar technologies.…”

“…[4][5][6][7][8] Among the various semiconductors, dioxide Titanium (TiO 2 ) and Zinc oxide (ZnO) are the main candidates in semiconductors based on photocatalysis. [4,5,[9][10][11][12][13] In this process, TiO 2 and ZnO nanostructures are inexpensive, environmentally friendly, and popular precursors of many functional materials used for optoelectronic, photocatalytic, photonic, and solar technologies.…”

Multifunctional UV and Gas Sensors Based on Vertically Nanostructured Zinc Oxide: Volume Versus Surface Effect

“…Metal oxides have been widely investigated and applied in chemoresistive gas sensors [1], photocatalysis [2,3] (Liu et al, 2013; Liu et al, 2014), optoelectronic devices [4,5], and water treatment [6,7]. Zinc oxide (ZnO) applied in these applications takes the form of nanoparticles, nanorods, or thin films.…”

Facile Fabrication of ZnO/TiO2 Heterogeneous Nanofibres and Their Photocatalytic Behaviour and Mechanism towards Rhodamine B

“…TiO 2 has three main phases: rutile, anatase and brookite. The anatase form exhibits the best photocatalytic performance due to its low recombination rate of charge carriers [7]. Zinc oxide (ZnO), with a band gap comparable to that of TiO 2 , also possesses a high photocatalytic performance [8, 9].…”