Synthetic Tuning of the Catalytic Properties of Au‐Fe3O4 Nanoparticles

Dumbbell-like Au-Fe3O4 nanoparticles and their single-component counterparts, Au and Fe3O4, were compared regarding their H2O2 reduction capability. The Au-Fe3O4 nanoparticles are catalytically more active, which is attributed to polarization effects from Au to Fe3O4. This activity can be further tuned by the size of the nanoparticles. Detailed facts of importance to specialist readers are published as "Supporting Information". Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.