Faster H recovery in Pd nanoparticle layer based Gd switchable mirrors: Size-induced geometric and electronic effects

Abstract

Articles you may be interested inSize and alloying induced shift in core and valence bands of Pd-Ag and Pd-Cu nanoparticles Size and alloying induced changes in lattice constant, core, and valance band binding energy in Pd-Ag, Pd, and Ag nanoparticles: Effect of in-flight sintering temperature

Size dependence of nanostructures: Impact of bond order deficiency

“…Using XRD, Reddy and Reddy [158] measured w8% contraction of the lattice parameter of a 12.5 nm sized ZnMnTe nanosolid. GAXRD studies of the asdeposited Pd overlayer on the hydrogen-induced changes in the Gd switchable mirrors reveal a positive shift in the XRD peak position indicating lattice contraction with decrease in Pd nanoparticle size [159]. Extended XAFS investigation revealed that the CueCu distance in copper nanosolids with 0.7e1.5 nm mean diameter contracts with size in a D ÿ1 way and the CueCu dimer bond is reduced by 13% from 0.2555 to 0.221 nm of the 0.7 nm-sized particle [160].…”

Size dependence of core and valence binding energies in Pd nanoparticles: Interplay of quantum confinement and coordination reduction

“…10 Prior to deposition, the growth chamber has been evacuated to 1 ϫ 10 −6 Torr, and repeated argon purging was carried out to minimize the oxygen concentration in the growth chamber. High deposition pressure ͑10 −4 −10 −3 Torr of Ar͒, low substrate temperature ͑T s =30°C͒, and high flow rate of argon ͑FR= 20 SCCM͒ ͑SCCM denotes cubic centimeter per minute at STP͒ resulted in the formation of Pd nanoparticles.…”

Size and alloying induced shift in core and valence bands of Pd-Ag and Pd-Cu nanoparticles

“…The Pd nanoparticles have shown better hydrogenation properties in comparison to their thin film and bulk counterparts. [10][11][12][13][14] The increased surface area and quantum confinement effects in the nanoparticles alter their electronic properties, resulting in enhanced activity and specificity of the catalysts. 15 The effect of alloying and size on the electronic properties of Pd can be clearly understood by synthesizing Pd-alloy nanoparticles with controlled dimensions.…”