Fabrication of gold nano- and microstructures in ionic liquids—A remarkable anion effect

Ionic Liquids as Size‐ and Shape‐Regulating Solvents for the Synthesis of Cobalt Nanoparticles

“…Over the last few years, various types of nanoparticles have been prepared in ILs including monometallic and bimetallic particles (e.g., Pd [3], Pt [5], Au, Ag [6], Fe [7], Ru [7], Os [7], Ir [8], Rh [8], Co [8,9], Cr [10], Mo [10], W [10], Cu/Zn [11], Ni/Ga [12], Ru/Cu [13], Ru/Fe [14]) and nanoparticle metal oxides (e.g., Fe 3 O 4 [15], CoFe 2 O 4 [15a], or CeO 2 [16]). The shape-regulating effect of ILs in nanoparticle synthesis has also been reported, e.g., for Co nanocubes [17], and Au nanorods [18], nanoprisms [19], or nanoplates [20]. In addition, various physical methods have been reported where ILs were used as capture media, e.g., in combination with sputter techniques [21], thermal evaporation [22], or laser ablation [23].…”

Ionic Liquids as Designer Solvents for the Synthesis of Metal Nanoparticles

“…The ionic nature and thermal stability of imidazoliumbased ILs also make them good absorbers of microwaves. The microwave absorbing ability of ILs was utilized for the formation of Au nanosheets of 50 nm thickness and size larger than 30 µm by microwave heating of HAuCl 4 in [BMIm] [BF 4 ] IL, wherein role of both the IL and the microwave heating in shape control was claimed (Ren et al, 2008). Zhu and co-workers synthesized 60 nm thick hexagonaland triangular-shaped Au nanosheets by a photochemical reduction method in [BMIm] [BF 4 ] (Zhu et al, 2007).…”

Preparation of mesoporous titania particles using ionic liquid dissolving starch as templates

“…As the dehydration and condensation of starch increased, more water molecules were produced in the network of starch, which reacted with the TBT molecules to form TiO 2 /IL/starch composite particles. Starch molecules in the IL were decomposed as the temperature increased, resulting in the porous structure [11]. In this work, the TiO 2 precursor/IL ratio was kept unchanged for the synthesis of TiO 2 particles.…”

“…Recently, ILs provided new routes for the preparation of nanoparticles. For example, Ren and co-workers prepared gold nanoparticles in ILs [11]. Li and co-workers prepared silica microrods with nano-sized pores in IL microemulsions [12].…”