A Brief Survey of the Potential Health Risks of TiO2 Particles and TiO2- Containing Photocatalytic or Non-Photocatalytic Materials
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Pierre Pichat
Abstract
In the past, TiO2 particles have been considered non-toxic because of both their chemical inertness and the conclusions of epidemiological studies dealing with μm-sized particles. Recently, the assignment of diseases to inhalation of atmospheric particles, and the important industrial development of nm-sized particles - among which TiO2 particles are prominent, principally because of their photocatalytic properties - have induced new safety research. This article provides the results of in vivo experiments showing that TiO2 particles inhaled or swallowed can go through the biological barriers and cause damage to various organs. Obviously, the smaller the particle size, the easier the translocation within the body. There are indications that the TiO2 allotropic form and various surface properties also influence the biological impairments. Although the experimental methodologies can sometimes be criticized, a danger is pointed out. To evaluate the ensuing risk, the release of particles from TiO2 - containing substances and materials is discussed. Precautions and recommendations are presented, even though the potential inhalation of TiO2 -containing particles appears to be minor compared with that of particles emitted by combustions, with the obvious exception of workers manufacturing or using TiO2 particles.
© 2016 by Walter de Gruyter Berlin/Boston
Artikel in diesem Heft
- Preface
- A Brief Survey of the Potential Health Risks of TiO2 Particles and TiO2- Containing Photocatalytic or Non-Photocatalytic Materials
- What Are Titania Photocatalysts?―An Exploratory Correlation of Photocatalytic Activity with Structural and Physical Properties
- Considerations of Particle Size in Aqueous Phase Photocatalysis kinetics with TiO2
- Binary Cationic BDDAC/Anionic DoS Surfactant Systems of Variable Compositions.Mineralization by an Advanced Oxidation Process in Aqueous Dispersions
- The Role of Non-Metal Doping in TiO2 Photocatalysis
- Photocatalysis and Catalytic Properties of Nano-sized N-TiO2 Catalyst Synthesized by Sol-gel Methods
- Effects of Surface Modification on the Photocatalytic Activity of TiO2
- Carbon-modified TiO2 as Photocatalysts
- Photocatalytic Reduction of Organic Compounds
- Photocatalytic Activity for NO Degradation by Construction Materials: Parametric Study andMultivariable Correlations
Artikel in diesem Heft
- Preface
- A Brief Survey of the Potential Health Risks of TiO2 Particles and TiO2- Containing Photocatalytic or Non-Photocatalytic Materials
- What Are Titania Photocatalysts?―An Exploratory Correlation of Photocatalytic Activity with Structural and Physical Properties
- Considerations of Particle Size in Aqueous Phase Photocatalysis kinetics with TiO2
- Binary Cationic BDDAC/Anionic DoS Surfactant Systems of Variable Compositions.Mineralization by an Advanced Oxidation Process in Aqueous Dispersions
- The Role of Non-Metal Doping in TiO2 Photocatalysis
- Photocatalysis and Catalytic Properties of Nano-sized N-TiO2 Catalyst Synthesized by Sol-gel Methods
- Effects of Surface Modification on the Photocatalytic Activity of TiO2
- Carbon-modified TiO2 as Photocatalysts
- Photocatalytic Reduction of Organic Compounds
- Photocatalytic Activity for NO Degradation by Construction Materials: Parametric Study andMultivariable Correlations
