Fe doped NiS nanosheet arrays grown on carbon fiber paper for a highly efficient electrocatalytic oxygen evolution reaction.

Developing efficient and low-cost non-noble metal catalysts for the oxygen evolution reaction (OER) is important for hydrogen production through water electrolysis. Herein, Fe doped NiS nanosheets directly grown on conductive carbon fiber paper (Fe-NiS@CFP) were fabricated through a two-step hydrothermal process. The microstructure, interface and electronic states of the prepared sample were modulated by Fe doping, exhibiting small internal and interface charge-transfer resistance.

Atomic origins of the strong metal-support interaction in silica supported catalysts.

Silica supported metal catalysts are most widely used in the modern chemical industry because of the high stability and tunable reactivity. The strong metal-support interaction (SMSI), which has been widely observed in metal oxide supported catalysts and significantly affects the catalytic behavior, has been speculated to rarely happen in silica supported catalysts since silica is hard to reduce. Here we revealed at the atomic scale the interfacial reaction induced SMSI in silica supported Co and Pt catalysts under reductive conditions at high temperature using aberration-corrected environmental transmission electron microscopy coupled with electron energy loss spectroscopy.

Au@CoP core/shell nanoparticles as a nano-electrocatalyst for enhancing the oxygen evolution reaction.

Core/shell nanoparticles (NPs) of Au@CoP, each comprising a Au core with a CoP shell, were prepared, and shown to efficiently catalyze the oxygen evolution reaction (OER). In particular, Au@CoP has a small overpotential of 321 mV at 10 mA cm in 1 M KOH aqueous solution at room temperature, which is about 95 mV less than pure CoP. More importantly, the Tafel slope of Au@CoP, at 57 mV dec, is 44 mV dec lower than that of CoP.

Porous Pt-NiO nanostructures with ultrasmall building blocks and enhanced electrocatalytic activity for the ethanol oxidation reaction.

Oxidized species on surfaces would significantly improve the electrocatalytic activity of Pt-based materials. Constructing three-dimensional porous structures would endow the catalysts with good stability. Here, we report a simple strategy to synthesize porous Pt-NiO nanostructures composed of ultrasmall (about 3.