期刊
出版社
MDPI
DOI: 10.3390/ijerph19095681
关键词
titanium dioxide; nanotoxicity; industrial applications; photocatalysis; food preservative; sunscreen agent; health controversies
Titanium dioxide, a significant white mineral, has various applications in industries such as photocatalysis, pharmaceuticals, and food processing. Recent research revealed that restructuring its surface properties can either enhance or inhibit its reactivity, while its potential carcinogenicity has caused controversies.
Titanium dioxide, first manufactured a century ago, is significant in industry due to its chemical inertness, low cost, and availability. The white mineral has a wide range of applications in photocatalysis, in the pharmaceutical industry, and in food processing sectors. Its practical uses stem from its dual feature to act as both a semiconductor and light scatterer. Optical performance is therefore of relevance in understanding how titanium dioxide impacts these industries. Recent breakthroughs are summarised herein, focusing on whether restructuring the surface properties of titanium dioxide either enhances or inhibits its reactivity, depending on the required application. Its recent exposure as a potential carcinogen to humans has been linked to controversies around titanium dioxide's toxicity; this is discussed by illustrating discrepancies between experimental protocols of toxicity assays and their results. In all, it is important to review the latest achievements in fast-growing industries where titanium dioxide prevails, while keeping in mind insights into its disputed toxicity.
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