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    Rights: The University of Waikato Published 30 May 2008 Size: 25 KB Referencing Hub media

    In the ball-shaped nanoparticle of catalyst atoms on the left, the atoms in the middle are surrounded and cannot take part in a reaction. On the right, a core-shell particle has catalyst atoms only on the outside, so it has the advantage in that all the catalyst atoms can take part in reactions.