The Double‐Laser Ablation Source Approach

Composition-Tuned Pt-Skinned PtNi Bimetallic Clusters as Highly Efficient Methanol Dehydrogenation Catalysts

“…Furthermore, the involvement of stabilizing chemicals in wet chemistry, such as ligand molecules, greatly alters the intrinsic properties of nanomaterials, making the understanding of their composition-and structure-dependent activity more complex. [35][36][37][38][39][40] Depositing preformed Pt-based bimetallic clusters/nanoparticles, with precisely-defined size, composition and surface coverages [41][42][43][44] on various oxide supports, using the Cluster Beam Deposition (CBD) technology could be one of the key solutions to design better fuel-cell catalysts. 45 Clusters are particles typically composed of less than a thousand atoms and have dimensions smaller than a few nanometres.…”

The effect of size, charge state and composition on the binding of propene to yttrium-doped gold clusters

“…In brief, pure Au n + and doped Au n −1 Y + clusters were produced by laser ablation, in a source described in detail elsewhere. 74 Two independent YAG lasers ablate almost simultaneously Au and Y targets, creating a plasma that is cooled down by the inclusion of He carrier gas (backing pressure of 8 bar). The mixture of Au–Y–He then expands supersonically into vacuum, through a conical nozzle, creating a molecular beam composed of Au n + and Au n −1 Y + clusters.…”

Free carrier enhanced depletion in ZnO nanorods decorated with bimetallic AuPt nanoclusters

“…45 ZnO NRs were then decorated with a series of small Au, Pt, and AuPt nanoclusters produced under ultrahigh-vacuum (UHV) conditions (base pressure as low as 1 × 10 −9 mbar) using a LACBD setup. 46 Two pulsed (10 Hz) Nd:YAG laser beams (wavelength = 532 nm, power = 25 mJ per pulse) were used to ablate the target materials (Au, Pt, or Au 50 Pt 50 , 99.95% pure) and induce nanocluster formation. Details on the synthesis technique are provided in ref.…”