Crystal phase-selective synthesis of intermetallic palladium borides and their phase-regulated (electro)catalytic properties

Abstract

Three crystal phases of Pd-B intermetallics, including Pd6B, Pd5B2 and Pd2B, are synthesized, and their phase-dependent catalytic activities toward electrochemical water splitting and Suzuki coupling reaction are studied. In both...

d–sp orbital hybridization: a strategy for activity improvement of transition metal catalysts

“…Similar d-band regulations through changing B contents were also This journal is © The Royal Society of Chemistry 2022 verified in the other intermetallic boride systems (e.g., W-B, Mo-B, and Pd-B). 79,81,82 In addition to the contents, the distribution and order of interstitial B atoms largely affect the d-band properties of transition metals. Our research group used Pd-B as a model to investigate the influence of these factors in detail.…”

Recent Progress on Phase Engineering of Nanomaterials

“…Li et al synthesized Pd 2 B intermetallic compound via solid phase reactions, which was applied to catalyze the Suzuki coupling reaction. 1136 After reacting for 16 h, Pd 2 B exhibited a high conversion of 89%, while the Pd counterpart generated the desired product only at a rate of 50%. The theoretical and experimental studies showed that an increase in B content in the Pd lattice can cause a downshift in the d-band center and improve the surface adsorption properties.…”

“…Li et al . synthesized Pd 2 B intermetallic compound via solid phase reactions, which was applied to catalyze the Suzuki coupling reaction . After reacting for 16 h, Pd 2 B exhibited a high conversion of 89%, while the Pd counterpart generated the desired product only at a rate of 50%.…”

Inorganic non-carbon supported Pt catalysts and synergetic effects for oxygen reduction reaction

“…Transition metal diborides have emerged as promising electrocatalysts theoretically due to the strong hybridization between d orbitals of the transition metal and sp orbitals of boron. [340][341][342] Metal borides also show resistance against alkaline corrosion as an eletrocatalyst. 343 Yin et al synthesized TiB 2 by selfpropagating high-temperature synthesis as the support for Pt loading by the Nafion film in ORR.…”