Catalytic Oxidation of Silanes by Carbon Nanotube–Gold Nanohybrids

Abstract

ANR (Nanorings imaging); CEA-Eurotalents progra

Carbon nanotubes-gold nanohybrid as potent electrocatalyst for oxygen reduction in alkaline media

“…29,30 Yet dense, homogeneous and stable covering of the nanotubes with small metallic nanoparticles remains difficult to achieve, thus impacting the overall performances of the material. In this paper, we show that small monodispersed gold nanoparticles compactly and uniformly anchored onto CNTs through a layer-by-layer method 31 outperform other nano-Au materials for electrocatalytic ORR in alkaline medium. The non-covalent layer-by-layer anchoring of gold nanoparticles on CNTs starts with the aqueous self-assembly of amphiphilic nitrilotriacetic-diyne lipid (DANTA) on multiwalled carbon nanotubes (Fig.…”

Silver/graphene nanocomposite: Thermal decomposition preparation and its catalytic performance

“…Hybridization of graphene is an important step towards the development of multifunctional materials with synergistic properties [4e7]. Indeed, noble metal nanoparticles modified carbon materials, carbon nanotubes or graphene oxide (GO), graphene has been a subject of numerous applications in electrochemical sensing [8,9], fuel cell engineering [10,11], catalysis [12,13], lithium-ion batteries [14].…”

Heterogeneous nickel catalyst for selective hydration of silanes to silanols

“…Under high substrate/catalyst ratio (10,000) conditions, 5 mmol of the silane 1a (entry 5) was selectively oxidized to the corresponding silanol in 93% yield after 24 h at 80 • C, corresponding to TON of 9300 and TOF of 387 h −1 (based on total Ni content). [21], and AuNPore (100 h −1 ) [22], though it is lower than those of Pd/C (TOF 20,000 h −1 ) [19] and AuCNT (18,000 h −1 ) [23]. Other aliphatic silanes (Pr 3 SiH and Bu 3 SiH) were also selectively converted to the corresponding silanols (entries 6 and 7).…”

“…Among various preparation methods of silanols, recent attention has been focused on the oxidation of organosilanes with water under neutral conditions by noble-metal catalysts. Homogeneous (Ir [8], Re [9,10], Rh [11], Ru [12,13], Pt [14], Ag [15]) and heterogeneous (Ru [16,17], Ag [18], Pd [19,20], Au [21][22][23]) noble-metal catalysts were developed. Homogeneous [24] and heterogeneous [20,25] catalysts based on Cu or Ni were also reported, but their activity was lower than the noble-metal catalysts.…”