Abstract:In decades, heterogeneous catalysis has played a more significant role in social progress. However, the exorbitant price and low reserves vastly limit the application of noble metal catalysts, which are extensively used in heterogeneous catalysis. The single-atom-alloy catalysts (SAAs) have been regarded as a crucial way to improve the dispersion ratio of noble metal while maintaining great heterogeneous catalytic performance by dispersing noble metal single atoms on the surface of another metal. Besides the b… Show more
“…Studies on SAA catalyst are important in the development of heterogeneous catalysts at the atomic scale, which have become one of the future development directions of heterogeneous catalysts. 69 In this section, we summarize the applications of SAA materials in heterogeneous catalytic reactions, including selective hydrogenation, dehydrogenation, oxidation and hydrogenolysis reactions.…”
Single-atom alloys (SAAs) are a different type of alloy where a guest metal, usually a noble metal (e.g., Pt, Pd, and Ru), is atomically dispersed on a relatively more inert (e.g., Ag and Cu) host metal.
“…Studies on SAA catalyst are important in the development of heterogeneous catalysts at the atomic scale, which have become one of the future development directions of heterogeneous catalysts. 69 In this section, we summarize the applications of SAA materials in heterogeneous catalytic reactions, including selective hydrogenation, dehydrogenation, oxidation and hydrogenolysis reactions.…”
Single-atom alloys (SAAs) are a different type of alloy where a guest metal, usually a noble metal (e.g., Pt, Pd, and Ru), is atomically dispersed on a relatively more inert (e.g., Ag and Cu) host metal.
Ammonia is an essential commodity in the food and chemical industry. Despite the energy‐intensive nature, the Haber–Bosch process is the only player in ammonia production at large scales. Developing other strategies is highly desirable, as sustainable and decentralized ammonia production is crucial. Electrochemical ammonia production by directly reducing nitrogen and nitrogen‐based moieties powered by renewable energy sources holds great potential. However, low ammonia production and selectivity rates hamper its utilization as a large‐scale ammonia production process. Creating effective and selective catalysts for the electrochemical generation of ammonia is critical for long‐term nitrogen fixation. Single‐atom alloys (SAAs) have become a new class of materials with distinctive features that may be able to solve some of the problems with conventional heterogeneous catalysts. The design and optimization of SAAs for electrochemical ammonia generation have recently been significantly advanced. This comprehensive review discusses these advancements from theoretical and experimental research perspectives, offering a fundamental understanding of the development of SAAs for ammonia production.
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