Taming interfacial electronic properties of platinum nanoparticles on vacancy-abundant boron nitride nanosheets for enhanced catalysis

Citations Over TimeTop 1% of 2017 papers

Abstract

Taming interfacial electronic effects on Pt nanoparticles modulated by their concomitants has emerged as an intriguing approach to optimize Pt catalytic performance. Here, we report Pt nanoparticles assembled on vacancy-abundant hexagonal boron nitride nanosheets and their use as a model catalyst to embrace an interfacial electronic effect on Pt induced by the nanosheets with N-vacancies and B-vacancies for superior CO oxidation catalysis. Experimental results indicate that strong interaction exists between Pt and the vacancies. Bader charge analysis shows that with Pt on B-vacancies, the nanosheets serve as a Lewis acid to accept electrons from Pt, and on the contrary, when Pt sits on N-vacancies, the nanosheets act as a Lewis base for donating electrons to Pt. The overall-electronic effect demonstrates an electron-rich feature of Pt after assembling on hexagonal boron nitride nanosheets. Such an interfacial electronic effect makes Pt favour the adsorption of O₂, alleviating CO poisoning and promoting the catalysis.

Related Papers

• → The influence of Pt particle size on the surface oxidation of titania supported platinum(2009)47 cited
• → A Study of Surface Oxides on Platinum Electrodes(1964)48 cited
• → Correlations of platinum-195-phosphorus-31 coupling constants with platinum-ligand and platinum-platinum bond lengths in platinum(I) dimers and in related platinum(II) complexes(1986)26 cited
• → Mechanistic aspects of cathodic oxygen reduction in alkaline solution on the platinum-coated SnO2/Si electrode(1982)2 cited
• → Triplet Ps annihilation parameters in ethanol/c i s-2-pentene/platinum mixtures containing platinum or platinum on charcoal(1990)1 cited