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Creators/Authors contains: "Leeth Holterhoff, Andrew"

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  1. ; ; (, Chemical Communications)
    Self-propelling, light-activated colloidal particles can be actuated in water alone. Here we study the effect of adding different amounts of a gold/palladium alloy to titanium dioxide-based, active colloids. We observe a correlation between alloy-thickness and the average speed of the particles, and we discover an intermediate thickness leads to the highest activity for this system. We argue that a non-continuous thin-film of the co-catalyst improves the efficiency of water-splitting at the surface of the particles, and in-turn, the performance of “fuel-free” self-propulsion. 
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  2. ; ; (, The Journal of Physical Chemistry Letters)
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