【摘 要】
：
Developing efficient and low-cost electrocatalysts is essential for the electroreduction of N2 to NH3.Here,highly monodispersed MoO3 clusters loaded on a coral-
【机 构】
：
State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engi
论文部分内容阅读
Developing efficient and low-cost electrocatalysts is essential for the electroreduction of N2 to NH3.Here,highly monodispersed MoO3 clusters loaded on a coral-like CeOx compound with abundant oxygen vacancies are successfully prepared by an impregnation-reduction method.The MoO3 clusters with small sizes of 2.6 ± 0.5 nm are induced and anchored by the oxygen vacancies of CeOx,resulting in excellent nitrogen reduction reaction (NRR) performance.Additionally,the synergistic effects between MoO3 and CeOx lead to a further improvement of the electrochemical performance.The as-prepared MoO3-CeOx catalyst shows an NH3 yield rate of 32.2 μg h-1 mgcat-1 and a faradaic efficiency of 7.04％ at -0.75 V (vs.reversible hydrogen electrode) in 0.01 M Dulbecco's Phosphate Buffered Saline.Moreover,it displays decent electrochemical stability over 30,000 s.Besides,the electrochemical NRR mechanism for MoO3-CeOx is investigated by in-situ Fourier transform infrared spectroscopy.N-H stretching,H-N-H bending,and N-N stretching are detected during the reaction,suggesting that an associative pathway is followed.This work provides an approach to designing and synthesizing potential electrocatalysts for NRR.
其他文献
Development of high-performance and cost-effective catalysts for electrocatalytic hydrogen evolution reaction (HER) play crucial role in the growing hydrogen ec
In this work,a facile chelation-mediated route was developed to fabricate ultrathin cobalt (oxy)hydroxides (CoOOH) nanosheets on hematite photoanode (Fe2O3).The
All-solid-state batteries (ASSB) with lithium anode have attracted ever-increasing attention towards developing safer batteries with high energy densities.While
Al-ion batteries(AIBs) have been identified as one of the most hopeful energy storage systems after Li-ion batteries on account for the ultrahigh volumetric capacity,high safety and low cost from the rich abundance of Al.Nonetheless,some inevitable shortc
Synthesis of spherical carbon beads with effective CO_2 capture capability is highly desirable for large scale application of CO2 sorption, but remains challenging. Herein, a facile and efficient strategy to prepare nitrogen-doped hierarchically porous ca
For the first time, we developed porous Pt-Ni alloying nanoparticles with predominant(111) facets under intense magnetic fields. Electrochemical analysis revealed that the Pt-Ni alloying nanoparticles obtained at 2 Tesla exhibited a superior catalytic act
Poor cycling performance caused by the shuttle effect of polysulfides is the main obstacle in the development of advanced lithium-sulfur (Li-S) batteries.Functi
Developing high-performance anodes for potassium ion batteries (KIBs) is of paramount significance but remains challenging.In the normal sense,electrode materia
Metal-modified H-ZSM-5 has a high selectivity of aromatics in methanol to aromatics(MTA)reaction,which is often attributed to the metal promoting the aromatizat
Currently,lithium-sulfur(Li-S)batteries still suffer from fast capacity decay,poor coulombic efficiency(CE)and short cycling lifespan,which result from the seve