What is doped TiO2?

Abstract. Doping of TiO2 with various elements increases its photocatalytic activity due to the formation of new energy levels near the conduction band. Photocatalysis involving titanium dioxide is a heterogeneous process in which the surface of the catalyst plays an important role.

What is doped TiO2?

Abstract. Doping of TiO2 with various elements increases its photocatalytic activity due to the formation of new energy levels near the conduction band. Photocatalysis involving titanium dioxide is a heterogeneous process in which the surface of the catalyst plays an important role.

What are TiO2 nanoparticles used for?

Ultrafine TiO 2 is used in housing and construction as an additive to paints, plastics, cements, windows, tiles, and other products for its ultraviolet absorption and photocatalytic sterilizing properties, for example in antifogging coatings and self-cleaning windows.

Why is Fe doped TiO2?

Fe-doping decreases the band gap energy of TiO2 because the trapping level was induced by Fe-doping between valence and conduction band [10]. The adsorption of RR 198 onto TiO2 and Fe doped TiO2 was studied as a function of contact time to determine the necessary adsorption equilibrium time.

Is TiO2 nanoparticles toxic?

Titanium dioxide (TiO2) is a natural oxide of the element titanium with low toxicity, and negligible biological effects.

Is tio2 a metal or nonmetal?

Among various transition metal oxides, TiO2 is widely used as a photocatalyst due to its unique characteristics of low cost, good optical activity, high chemical stability, and non-toxic nature [22], [23].

What are the uses of silver nanoparticles?

Silver nanoparticles (AgNPs) are increasingly used in various fields, including medical, food, health care, consumer, and industrial purposes, due to their unique physical and chemical properties. These include optical, electrical, and thermal, high electrical conductivity, and biological properties [1,2,3].

What is the problem caused by titanium dioxide nanoparticles?

In most studies, TiO2 nanoparticles appeared to have caused oxidative stress, histopathological alterations, carcinogenesis, genotoxicity and immune disruption. Therefore, the use of such materials in humans must be either avoided or strictly managed to minimise risks for human health in various situations.

Why silver nanoparticles are used?

What does titanium dioxide do to the brain?

Our findings showed that nano-TiO2 may be enriched and cause toxicity in several organs such as the liver, kidney, spleen, heart, lung, and brain through generating an oxidation-reduction imbalance and disorders of gene expression. This may also cause damage to embryonic development.

Is titanium dioxide harmful to the body?

To date, titanium dioxide is considered safe for consumption. Most research concludes that the amount consumed from food is so low that it poses no risk to human health ( 1 , 3 , 7 , 17 ).

What is black TiO2?

Oxygen deficient TiO2, also known as black titania is a well-known defective metal oxide photocatalyst. In this work, a facile method for producing black titania is developed using reducing plasma jets.

Is TiO2 magnetic?

Our SQUID measurements indicate that though TiO, A-TiO2, and R-TiO2 cluster films are all magnetically or- dered at room temperature, they have different magnetic properties.

Why are silver nanoparticles better?

The advantage of the chemical synthesis of nanoparticles are the ease of production, low cost, and high yield; however, the use of chemical reducing agents are harmful to living organisms [13].

Why silver nanoparticles are toxic?

Three main mechanisms of toxicity of Ag NPS have been proposed: oxidative stress, DNA damage and cytokine induction. Results from in vivo studies have shown that exposure of Ag NPs can result in effects in different major organs.