Lattice-strain and Lewis acid sites synergistically promoted nitrate electroreduction to ammonia over PdBP nanothorn arrays

Abstract

Electrocatalytic reduction of nitrate to ammonia is a promising approach to mitigating nitrate pollution and simultaneously yielding value-added chemicals, which however suffers from insufficient current efficiency and ammonia yield rate....

Recent progress and strategies on the design of catalysts for electrochemical ammonia synthesis from nitrate reduction

“…Recently, both experiments and theoretical calculations have suggested that noble-metal materials (Pt, Pd, Ru, and Rh) are promising electrocatalysts for the NO 3 − RR under ambient conditions, as listed in Table 1. 20,38–42,45–48,50,52 For example, Li et al 42 designed Ru/oxygen-doped Ru core/shell nanoclusters (Fig. 2a and b) as an NO 3 − RR electrocatalyst for the production of NH 3 , in which the introduction of oxygen can increase the size of the Ru unit cell to induce tensile strains (Fig.…”

“…Thus, the electrochemical performance for reducing NO 3 − to NH 3 was significantly enhanced after B and P doping. 50…”

Self‐Supported Pd Nanorod Arrays for High‐Efficient Nitrate Electroreduction to Ammonia

“…In recent years, more and more studies on NO 3 − RR have shown that devising and building the efficient electrocatalysts with high stability and selectivity are necessary. [ 24 ] Hence, the development of electrocatalysts will affect the reaction rate, the process of hydrogenation, and the production selectivity of NO 3 − to NH 3 . [ 25,26 ] It is a usual practice to utilize noble metal catalysts, which focus primarily on the adsorption of anions and hydrogen, including investigating the reaction mechanism of NO 3 − reduction to NH 3 .…”

“…[21][22][23] In recent years, more and more studies on NO 3 − RR have shown that devising and building the efficient electrocatalysts with high stability and selectivity are necessary. [24] Hence, the development of electrocatalysts will affect the reaction rate, the process of hydrogenation, and the production selectivity of NO 3…”

Energy-Efficient Ammonia Synthesis from Nitrate via CoNi Alloys Incorporated in Carbon Frameworks

“…Ammonia occupies a crucial location in the sustainable energy system as it is an indispensable chemical feedstock that is extensively used in modern industries as well as a potential hydrogen carrier. − Currently, ammonia production mainly relies on the Haber–Bosch method, which demands high energy costs and produces higher levels of carbon dioxide emissions than the production of other chemicals − Considering the growing demand of ammonia in future energy systems, alternative green and sustainable strategies should be explored. Electrochemical synthesis of ammonia with renewable electricity inputs such as wind or solar energy offers a promising sustainable and economical technology. − Among all available N-containing species, nitrogen (N 2 ) gas present in air is identified as the most abundant N source for the renewable method through electrochemical nitrogen reduction reaction. , Unfortunately, the difficulty in cleaving the NN bond, limited solubility of N 2 , and competitive hydrogen production considerably hinder the development of this process. , …”