Reaction of Platinum and Boron under Pressure

Boron under Pressure: Phase Diagram and Novel High-pressure Phase

Boron has a unique chemistry, responsible for remarkable complexities even in the pure element. I review some of the history of the discovery of this element, and recent surprises found in boron under pressure. I discuss the recent discovery of a new high-pressure phase, γ-B28, consisting of icosahedral B12 clusters and B2 pairs in a NaCl-type arrangement: (B2)(B12), and displaying a significan...

LiB and its boron-deficient variants under pressure

Andreas Hermann,1,* Ainhoa Suarez-Alcubilla,2,4 Idoia G. Gurtubay,2,3 Li-Ming Yang,3 Aitor Bergara,2,3,4 N. W. Ashcroft,5 and Roald Hoffmann1 1Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY 14853, USA 2Materia Kondentsatuaren Fisika Saila, Zientzia eta Teknologia Fakultatea, Euskal Herriko Unibertsitatea, UPV/EHU, 644 Postakutxatila, 48080 Bilbo, Basque Country, Sp...

Boron choreographs a double reaction

sciencemag.org SCIENCE is a long-standing question in geology. Sarafian et al. present a clever set of experiments to determine the impact of small amounts of water on the melting temperature of mantle rock (see the Perspective by Asimow). This allowed them to reinterpret geophysical observations of melting in the mantle and revise estimates of mantle temperature upward. A hotter mantle has a m...

Electrocatalytic properties of platinum and it's binary alloy with vanadium in oxygen reduction reaction(ORR)

The electrocatalysis of the oxygen reduction reaction (ORR) on carbon supportedPt-V (1:1) catalyst in polymer electrolyte fuel cells (PEFC) was investigated. Atan oxygen pressure of one atm an enhanced electrocatalytic property of Pt-V/Ccompared with Pt/C is revealed. These results indicate the occurrence of adifferent electrocatalytic mechanism for the ORR on Pt/C and Pt-V/C. Anincrease of mas...

Transformation-induced plasticity and cascading structural changes in hexagonal boron nitride under high pressure and shear