Tuning the properties of ZnO, hematite, and Ag nanoparticles by adjusting the surface charge

Adv Mater. 2012 Mar 2;24(9):1232-7. doi: 10.1002/adma.201104535. Epub 2012 Feb 2.

Abstract

A poly (acryl acid) (PAA) post-treatment method is performed to modify the surface charge of ZnO nanospheres, hematite nanocubes, and Ag nanoprisms from highly positive to very negative by adjusting the PAA concentration, to and greatly modify their photoluminescence, cytotoxicity, magnetism, and surface plasmon resonance. This method provides a general way to tune the nanoparticle properties for broad physicochemical and biological applications.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Acrylic Resins / chemistry*
  • Cell Line
  • Cytotoxins / chemistry
  • Cytotoxins / toxicity
  • Ferric Compounds / chemistry*
  • Ferric Compounds / toxicity
  • Humans
  • Luminescence
  • Nanoparticles / chemistry*
  • Nanoparticles / toxicity
  • Nanoparticles / ultrastructure
  • Silver / chemistry*
  • Silver / toxicity
  • Static Electricity
  • Surface Plasmon Resonance
  • Surface Properties
  • Zinc Oxide / chemistry*
  • Zinc Oxide / toxicity

Substances

  • Acrylic Resins
  • Cytotoxins
  • Ferric Compounds
  • ferric oxide
  • Silver
  • carbopol 940
  • Zinc Oxide