Controlling the photoactivity of nanoparticles

P. Casey, S. Boskovic, K. Lawrence, T. Turney

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

5 Citations (Scopus)

Abstract

The relative photoactivity of a series of nanophase ZnO powders with varying crystallite size (20-140nm) was determined using a chemical method based on the photobleaching behaviour of the stable radical 1,1-diphenyl-2- picrylhydrazyl (DPPH). It was confirmed that photoactivity behaviour increased (one to twofold) with decreasing crystallite size for crystallites <100nm. A further series of nanophase ZnO powders doped with metal ions showed that, depending on the type and/or level of dopant, the photoactivity behaviour of nanoparticles could be reduced by more than an order of magnitude.

Original languageEnglish
Title of host publication2004 NSTI Nanotechnology Conference and Trade Show - NSTI Nanotech 2004
EditorsM. Laudon, B. Romanowicz
Pages370-374
Number of pages5
Publication statusPublished - 2 Nov 2004
Externally publishedYes
EventNanotechnology Conference and Trade Show (Nanotech) 2004 - Boston, United States of America
Duration: 7 Mar 200411 Mar 2004

Publication series

Name2004 NSTI Nanotechnology Conference and Trade Show - NSTI Nanotech 2004
Volume3

Conference

ConferenceNanotechnology Conference and Trade Show (Nanotech) 2004
Abbreviated titleNSTI Nanotech 2004
CountryUnited States of America
CityBoston
Period7/03/0411/03/04

Keywords

  • Doped
  • Nanoparticle
  • Photoactivity
  • Zinc oxide

Cite this