Singlet oxygen generation in the presence of titanium dioxide materials used as sunscreens in suntan lotions

Buchalska, Marta; Kras, Gabriela; Oszajca, Marcin; Łasocha, Wiesław; Macyk, Wojciech

doi:10.1016/j.jphotochem.2010.05.019

Cited by 60 publications

(40 citation statements)

References 32 publications

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“…Frank and Bard also highlighted its use as a photocatalyst in the area of water remediation in 1977 [9]. TiO 2 is important in a wide range of commercial applications [10], as a pigment in certain formulations such as paints [11,12], toothpastes and suncreams [13,14] due to its strong white colour and also in various applications such as water splitting [15,16], self-cleaning [17][18][19][20], sterilisation [21], anti-fogging [22], lithography [23], degradation of organic compounds [24,25], and metal corrosion prevention [26,27]. Titanium dioxide occurs in nature in three different crystalline forms; anatase, brookite and rutile, with rutile being the most abundant and thermodynamically stable [28].…”

Section: Introductionmentioning

confidence: 99%

A review of solar and visible light active TiO2 photocatalysis for treating bacteria, cyanotoxins and contaminants of emerging concern

Fagan

McCormack

Dionysiou

et al. 2016

Materials Science in Semiconductor Processing

497

195

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Section: Introductionmentioning

confidence: 99%

A review of solar and visible light active TiO2 photocatalysis for treating bacteria, cyanotoxins and contaminants of emerging concern

Fagan

McCormack

Dionysiou

et al. 2016

Materials Science in Semiconductor Processing

497

195

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“…Nano TiO 2 and ZnO can undergo photocatalitic reactions when exposed to ultraviolet radiation, with the generation of ROS such as O ·− 2 , · OH, and H 2 O 2 [78]; TiO 2 and ZnO extracted from commercial sunscreens can react with some chemicals and cause corrosion to paint surfaces when irradiated with UV rays [79,80]. This photoactivity can present the risk of cellular damage and environmental toxicity.…”

Section: Inorganic Filtersmentioning

confidence: 99%

Cosmetic Ingredients as Emerging Pollutants of Environmental and Health Concern. A Mini-Review

2017

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Cosmetic and personal care products are used in huge quantities throughout the world; as a result of their regular use, they are continuously released into the environment in very large amounts. Many of these products are biologically active and are characterized by persistence and bioaccumulation potential, posing a threat to ecosystem and human health. On the basis of the most recent scientific literature available on this subject, this paper provides an overview of some cosmetic ingredients that are considered environmental emerging pollutants of particular concern such as UV filters, some preservatives (parabens, triclosan), and microplastics.

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“…Singlet oxygen ( 1 O 2 ) was reported to be generated upon irradiation of TiO 2 (Buchalska et al 2010;. Being diamagnetic, this species is not detected by EPR.…”

Section: Generation Of Singlet Oxygenmentioning

confidence: 99%

“…Therefore, commercial nano-TiO 2 are generally coated with inert materials (Lee et al 2007;Landsiedel et al 2010) which inhibits the formation of radical species and singlet oxygen by preventing the contact of the TiO 2 surface with oxygen and water. However, not all the coatings are equally efficient in preventing the release of surface-derived ROS (Sayes et al 2006;Brezova et al 2005;Carlotti et al 2009;Tiano et al 2010;Buchalska et al 2010). Antioxidant ingredients are also added to the formula to mitigate the oxidative properties of photogenerated ROS (Carlotti et al 2009).…”

Section: Introductionmentioning

confidence: 99%

Inhibition of the ROS-mediated cytotoxicity and genotoxicity of nano-TiO2 toward human keratinocyte cells by iron doping

et al. 2014

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Inhibition of the ROS-mediated cytotoxicity and genotoxicity of nano-TiO 2 toward human keratinocyte cells by iron doping J Nanopart Res (2014) Nano-TiO 2 powders are widely used in sunscreen lotions as UV filters in combination with other substances. The activation of TiO 2 by UV rays leads to the release of reactive oxygen species (ROS, e.g., hydroxyl radicals and singlet oxygen) which are potentially harmful. For this reason the TiO 2 particles are generally coated with inert materials (e.g., silica or alumina) that inhibit such reactivity. Alternatively, the release of ROS may be inhibited by introducing in the TiO 2 lattice doping elements. In the present study we report a new modification consisting in a wet impregnation of TiO 2 with iron salts followed by a thermal treatment that results in an inhibition of the surface reactivity. The insertion of iron ions also gradually reduces the ability of photo-activated TiO 2 to cleave DNA and proteins. At the same time, a clear inhibition of cyto-and geno-toxicity toward human (HaCaT) keratinocytes was observed. The data presented herein suggest the insertion of Fe 3+ ions at the surface of nano-TiO 2 as a promising strategy to reduce the photo-induced toxicity of nano-TiO 2 powders.

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Singlet oxygen generation in the presence of titanium dioxide materials used as sunscreens in suntan lotions

Cited by 60 publications

References 32 publications

A review of solar and visible light active TiO2 photocatalysis for treating bacteria, cyanotoxins and contaminants of emerging concern

A review of solar and visible light active TiO2 photocatalysis for treating bacteria, cyanotoxins and contaminants of emerging concern

Cosmetic Ingredients as Emerging Pollutants of Environmental and Health Concern. A Mini-Review

Inhibition of the ROS-mediated cytotoxicity and genotoxicity of nano-TiO2 toward human keratinocyte cells by iron doping

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