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    Effects of dominant material properties on the stability and transport of TiO2 nanoparticles and carbon nanotubes in aquatic environments: from synthesis to fate

    Year: 2013

    Journal: Environ. Sci.: Processes Impacts, 2013,15, 169-189, 20130118

    Authors: Xuyang Liu *a, Gexin Chen a, Arturo A. Keller b and Chunming Su *c

    Last authors: Chunming Su

    Organizations: aNational Research Council Resident Research Associate at the U.S. Environmental Protection Agency, 919 Kerr Research Drive, Ada, Oklahoma 74820, USA. E-mail: liu.xuyang@epa.gov; Tel: +1 580 436-8803 bSchool of Environmental Science and Management, University of California, Santa Barbara, CA 93106, USA cGround Water and Ecosystems Restoration Division, National Risk Management Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, 919 Kerr Research Drive, Ada, Oklahoma 74820, USA. E-mail: su.chunming@epa.gov; Fax: +1 580 436-8703; Tel: +1 580 436-8638

    Country: usa, US, United States, United States of America, America

    Recently, increasing studies have focused on the environmental stability, transport, and fate of the anthropogenic nanomaterials in the environment, which contributes to the understanding of the potential risks when released. However, applying nanomaterials from different manufacturers and production methods tends to result in inconsistent experimental data and potentially a biased comparison. The aim of this review is to investigate the dominant material properties that determine the aggregation and deposition behavior of nanomaterials. Herein, we focus on two of the most popular anthropogenic nanomaterials, i.e., titanium dioxide (TiO2) and carbon nanotubes (CNTs). We start from the production methods of nanomaterials of different sources, and then examine their influence on the material properties and surface characteristics. The role of the material properties was carefully analyzed and correlated with the stability and transport in aquatic environments. These two case studies may be extended to other nanomaterials with similar surface properties, which will improve our understanding of the impact and risks of anthropogenic nanomaterials in the environment. This study highlights opportunities to design and produce “green” nanomaterials with less environmental risk and no sacrificing of the novel “nano” properties.