Phase Controlled Intermetallic Platinum Tin Nanoparticles In Seeded Growth Synthesis For Catalytic Applications
2018 IEEE 18TH INTERNATIONAL CONFERENCE ON NANOTECHNOLOGY (IEEE-NANO)(2018)
Abstract
Here we present platinum-tin nanoparticles, which were obtained by sequential reduction. First monometallic platinum particles are prepared by reduction of platinum(IV) chloride with tetrabutylammonium borohydride in toluene at room temperature with dodecylamine as a stabilizer. In the presence of these as-prepared particles, we reduce various amounts of bis[bis(trimethylsilyl) amino] tin(II) with diisobutylaluminum hydride. Depending on the amount of bis[bis(trimethylsilyl) amino] tin(II), we obtain different intermetallic platinum-tin phases like PtSn and PtSn2 as well as PtSn4 nanocrystals. Especially tin-rich particles provide an interesting surface structure for potential catalytic application. All particles were characterized by transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), energy-dispersive x-ray spectroscopy (EDX), and powder x-ray diffraction (XRD).
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Key words
seeded growth synthesis,monometallic platinum particles,plati-num(IV)chloride,tetrabutylammonium borohydride,potential catalytic application,energy-dispersive x-ray spectroscopy,PtSn nanocrystals,powder X-ray diffraction,bis[bis(trimethylsilyl)amino]tin(II),diisobutylaluminum hydride,high-resolution transmission electron microscopy,surface structure,EDX,HTEM,XRD,scanning electron microscopy,dodecylamine,toluene,chemical reduction,phase controlled intermetallic platinum tin nanoparticles,temperature 293 K to 298 K,PtSn
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