1,3-dibromopropane in organic carbonates: A dissolvent for Au, Pt, Pd, and Rh: A simple way for mastering nanoparticle deposition at inert cathodic materials

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• 作者：Jacques Simonet ; ^{jacques.simonet@univ-rennes1.fr}
• 关键词：Gold nanoparticles ; Platinum nanoparticles 1 ; 3-dibromopropane ; Electro-catalysis ; Carbon&ndash ; halogen bond
• 刊名：Electrochemistry Communications
• 出版年：2012
• 期刊代码：29_13882481
• 类别：ch
• 出版时间：June, 2012
• 卷：19
• 期：Complete
• 页码：93-96
• 文件大小：692 K

摘要

The use of solvents with very high dielectric permittivity like propylene carbonate (PC) or ethylene carbonate (EC) appears to be the basis of the electro-catalytic reduction of 1,3-dibromopropane (DB3) at metallic interfaces, in particular at common precious metals (M = Au, Pt, Pd, and Rh). Quite unexpectedly, mixtures DB3/PC + EC were shown to efficiently dissolve those metals possibly via organo-metallic intermediates (through oxidative insertion of the metal M into the C-Br bond). Electrodeposition of nanoparticles M⁰ of small size (often << 50 nm) could be easily achieved onto cathodically polarized inactive materials like glassy carbon or graphite. Such modified solid surfaces were shown to possess electro-catalytical properties towards organic halides. The present method permits electro-deposition of a large series of metals under neutral conditions and useful for the building of composite materials.