OICC Press Journal of Nanostructure in Chemistry 2193-8865 5 1 (March 2015) 2014 12 10 Gold–platinum alloy nanoparticles through water-in-oil microemulsion 10.1007/s40097-014-0136-8 EN Angshuman Pal Chemistry and Biomolecular Science, Clarkson University, Potsdam, NY, 13699, US Journal Article 2014 12 10 Abstract Au–Pt alloy nanoparticles have been synthesized by the reduction of tetrachloroauric acid (HAuCl 4 ) and chloroplatinic acid (H 2 PtCl 6 ) using sodium borohydride in water-in-oil (w/o) microemulsion of water/Triton X-100/cyclohexene/1-hexanol at 25 ± 2 °C. The observed nanoparticles looked like a chain with diameter of 2.5 nm. The particles formation was characterized by UV–visible spectrometry and transmission electron microscopy images. The particles are crystalline confirmed by high-resolution transmission electron microscopy and diffraction pattern. A bright-field and dark-field images were compared to find out the nature of the nanochains.