In‐Situ‐Generated MoO₂ on MoS₂/ZnO Heterostructures with Enriched S,O‐Vacancies for Enhanced Electrocatalytic Reduction of N₂ to NH₃

Abstract

Electrocatalytic nitrogen reduction reaction (NRR) is a green method for synthesis ammonia under mild condition compared to energy‐intensive Haber‐Bosch process. Herein, a novel heterojunction material (MMZ‐900) is prepared as an excellent electrocatalyst for NRR at 900 °C, which is composed of MoS2, MoO2 and ZnO with nonuniform charge distribution of rich S and O vacancies. As a result, MMZ‐900 exhibits about 8 times higher Faradaic efficiency and 5 times higher NH3 yields for NRR than pure MoS2, respectively. These new insights may open up opportunities for exploiting efficient NRR electrocatalysts by simultaneously improving sulfur and oxygen vacancies on heterojunction material.

Ru/La2S3 nanorods as an electrocatalyst for efficient N2 fixation under ambient conditions

“…The Watt–Chrisp 38 method was used to detect possible hydrazine products. A chromogenic reagent was prepared with p -dimethylaminobenzaldehyde (5.99 g), ethanol (300 mL) and hydrochloric acid (30 mL) as raw materials.…”

Hydrothermal Self‐Assembly of Gold Nanoparticles Embed on Carbon Felt for Effective Nitrogen Reduction

“…[4][5][6] However, the energy of the N≡N triple bond of a molecular N 2 is too high (%940 kJ mol À1 ), reducing the likelihood of N 2 activation on an electrocatalytic surface. [7] Besides, the reaction potentials of e-NRR and hydrogen evolution reaction (HER) are very close, leading to a competition in electron consumption and low ammonia yields. [8] Therefore, promising e-NRR catalysts should possess high N 2 adsorption and activation capacities and good electrical conductivities.…”