Incidental nanomaterials are produced unintentionally (more specifically, an unintended nano-byproduct of some anthropogenic process), and as a result commonly enter the environment very soon or immediately upon formation. We will discuss typical examples of incidental NPs in the environment. How to identify them and study their environmental implications. For example, we have discovered that TiO2 minerals naturally present in coal quickly convert to titania suboxides, specifically Magnéli phases (TixO2x-1 with 4 ≤ x ≤ 9) during the coal’s heating/burning in coal-fired power plants. This is a typical example of incidental NP with significant environmental risk. Moreover, engineered NPs are being produced in amounts large enough to make them a consequential nano-component of the planet. Taking silver NP as an example, we have found that Ag0-NPs are transformed into secondary biogenic NPs with the size less than 10 nm by sulfate reducing bacteria, showing more significant bioavailability and phyto-uptake.

Incidental nanoparticles in the environment: identification and their implications

Macromolecular Chemistry: The Second Century

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ACS Spring 2020 National Meeting & Expo

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.