【摘 要】
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Electrochemical synthesis of ammonia has the advantages of low energy consumption and promising environmental protection,as compared to the traditional Haber-Bosch process.However,the commercial utilization of this novel system is limited by the low Farad
【机 构】
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Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials of Liaoning Provi
论文部分内容阅读
Electrochemical synthesis of ammonia has the advantages of low energy consumption and promising environmental protection,as compared to the traditional Haber-Bosch process.However,the commercial utilization of this novel system is limited by the low Faradaic efficiency,poor ammonia yield and high overpotential due to the strong N≡N bond and the dominant competing reaction of hydrogen evolution reaction (HER).Herein,a BiOCl-modified two-dimensional (2D) titanium carbide MXenes nanocomposite(BiOCl@Ti3C2Tx) is proposed as a promising electrocatalyst for ambient nitrogen (N2) reduction reaction with excellent catalytic performance and superior long-term stability at low overpotential.In 0.1 mol/L HCl,this catalyst attains a high Faradic efficiency of 11.98％ and a NH3 yield of 4.06 μg h-1 cm-2 at-0.10 V (vs.RHE),benefiting from its strong interaction of Bi 6p band with the N 2p orbitals,combined with its large specific surface area and the facile electron transfer.
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