Effects of humic acid and electrolytes on photocatalytic reactivity and transport of carbon nanoparticle aggregates in water.

Journal Article (Journal Article)

The effects of naturally occurring macromolecules such as humic acid (HA) and electrolytes on four fullerene nanoparticle suspensions (i.e., C(60), C(60)(OH)(24), single- and multiwall carbon nanotubes) were explored with respect to: (1) characteristics of nanoparticle aggregates, (2) transport of the aggregates through a silica porous media, and (3) production of reactive oxygen species (ROS) from the photosensitized fullerene aggregates. The presence of HA and salts increased the size of aggregates and relative hydrophobicity associated with transport through silica beads, while decreasing ROS production. These data illustrate the importance that transformation of engineered nanomaterials (ENMs) through interactions with aquatic solutes may have in altering the environmental behavior of nanomaterials.

Full Text

Duke Authors

Cited Authors

  • Chae, S-R; Xiao, Y; Lin, S; Noeiaghaei, T; Kim, J-O; Wiesner, MR

Published Date

  • September 2012

Published In

Volume / Issue

  • 46 / 13

Start / End Page

  • 4053 - 4062

PubMed ID

  • 22673338

Electronic International Standard Serial Number (EISSN)

  • 1879-2448

International Standard Serial Number (ISSN)

  • 0043-1354

Digital Object Identifier (DOI)

  • 10.1016/j.watres.2012.05.018


  • eng