Pick your carats: nanoparticles of gold–silver–copper alloy produced in vivo
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Engineered gold nanoparticle catalysts containing a mixture of metals enable enhanced specificity and reactivity. We report the synthesis by plants of mixed metal nanoparticles suggesting the possibility of using plants to produce catalysts of specific composition, perhaps even those difficult to synthesise by traditional methods. The nanoparticles contain Au, Ag and Cu as an alloy. The structure and composition are confirmed by scanning transmission electron microscopy (STEM) and energy dispersive X-ray analysis (EDX).
Keywordscatalysis gold silver copper nanoparticles phytomining phytoremediation alloy TEM biosynthesis in vivo in plants
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This study was supported in part by the US Airforce grant AOARD054068 and by The MacDiarmid Institute for Advanced Materials and Nanotechnology.
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