A hexagonal boron carbon nitride(h-BCN) semiconductor was applied to intercalate cobalt ions to catalyze oxygen evolution reaction(OER) with light illumination, without using noble metals. The h-BCN with high specific...A hexagonal boron carbon nitride(h-BCN) semiconductor was applied to intercalate cobalt ions to catalyze oxygen evolution reaction(OER) with light illumination, without using noble metals. The h-BCN with high specific surface area showed a strong chemical affinity towards metal ions due to the 'lop-sided' densities characteristic of ionic B–N bonding, enabling the creation of metal/h-BCN hybrid layered structures with unique properties. As exemplified here by Co/h-BCN for water oxidation catalysis, after intercalating cobalt ions in the h-BCN host, the photocatalytic activity of the resultant layered hybrid is optimized due to their synergic catalysis that promotes charge separation and lowers reaction barriers. This finding promises a new nobel-metal-free nanocompsite using cost-acceptable and earth-abundant sustances for photocatalytic OER, and enables the facile design of duel catalytic cascades by merging transition metal catalysis with h-BCN(photo)catalysis for energy and sustainability.展开更多
基金supported by the National Basic Research Program of China (2013CB632405)the National Natural Science Foundation of China (21425309 and 21173043)
文摘A hexagonal boron carbon nitride(h-BCN) semiconductor was applied to intercalate cobalt ions to catalyze oxygen evolution reaction(OER) with light illumination, without using noble metals. The h-BCN with high specific surface area showed a strong chemical affinity towards metal ions due to the 'lop-sided' densities characteristic of ionic B–N bonding, enabling the creation of metal/h-BCN hybrid layered structures with unique properties. As exemplified here by Co/h-BCN for water oxidation catalysis, after intercalating cobalt ions in the h-BCN host, the photocatalytic activity of the resultant layered hybrid is optimized due to their synergic catalysis that promotes charge separation and lowers reaction barriers. This finding promises a new nobel-metal-free nanocompsite using cost-acceptable and earth-abundant sustances for photocatalytic OER, and enables the facile design of duel catalytic cascades by merging transition metal catalysis with h-BCN(photo)catalysis for energy and sustainability.
