TSANG, Michael P.; PHILIPPOT, Gilles; AYMONIER, Cyril; SONNEMANN, Guido

doi:10.1021/acssuschemeng.7b04800

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TSANG, Michael P.
Institut des Sciences Moléculaires [ISM]
Three Pillars Consulting

PHILIPPOT, Gilles
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

AYMONIER, Cyril
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

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Article de revue

Ce document a été publié dans

ACS Sustainable Chemistry & Engineering. 2018-03-05, vol. 6, n° 4, p. 5142-5151

American Chemical Society

Résumé en anglais

Supercritical fluid flow synthesis exploits unique properties of solvents in order to achieve reactions that proceed quickly to produce high-quality nanocrystals. Supercritical fluids are often referred to “green” solvents because they can proceed at moderate temperatures. Therefore, this study sought to compare the supercritical fluid flow synthesis of TiO2 to that of a conventional precipitation method from an environmental and human health perspective. A life-cycle assessment was conducted to determine the impacts of producing 1 kg of dry TiO2 nanoparticles using either the supercritical or precipitation route. While the results suggest that supercritical fluid flow synthesis may indeed be a preferable synthesis route compared with a conventional route such as precipitation, the inherent uncertainty underlying this emerging technology indicates that there are a number of trade-offs in switching from one technology to another. Supercritical fluid flow synthesis was likely a better technology option from a cumulative energy demand and climate change perspective; however, there was less evidence for this from a human health and ecotoxicological perspective, for example. In particular, occupational exposure to emissions of TiO2 nanoparticles could be an issue for this emerging industry if the proper protective controls are not put in place.< Réduire

Mots clés en anglais

Green chemistry

Green solvents

Life-cycle assessment

Monte Carlo analysis

Supercritical fluids

Uncertainty

DOI

http://dx.doi.org/10.1021/acssuschemeng.7b04800

Project ANR

Initiative d'excellence de l'Université de Bordeaux - ANR-10-IDEX-0003

Origine

Importé de hal

Unités de recherche

Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB) - UMR 5026