Critical to the feasibility of electrochemical reduction of waste NO_x(NO_xRR), as a sustainable pathway and to close the NO_xcycle for the emerging NH₃economy, is the requirement of inexpensive, scalable and selective catalysts that can generate NH₄⁺with high yield, as indicated by our economic modelling.

Sustainable ammonia production using water and air through the coupling of plasma-driven intermediary NO_x generation and their electrocatalytic conversion.

The facile and scalable synthesis of manganese-doped nickel/nickel oxide heterostructures with high activity, outperforming the Pt benchmark, in neutral electrolytes.

The conversion of carbon dioxide into value-added products is of great industrial and environmental interest. However, as carbon dioxide is relatively stable, the input energy required for this conversion is a significant limiting factor in the system's performance. By utilising energy from the sun, through a range of key routes, this limitation can be overcome. In this review, we present a comprehensive and critical overview of the potential routes to harvest the sun's energy, primarily through solar-thermal technologies and plasmonic resonance effects. Focusing on the localised heating approach, this review shortlists and compares viable catalysts for the photo-thermal catalytic conversion of carbon dioxide. Further, the pathways and potential products of different carbon dioxide conversion routes are outlined with the reverse water gas shift, methanation, and methanol synthesis being of key interest. Finally, the challenges in implementing such systems and the outlook to the future are detailed. Keywords: Carbon dioxide conversion, Photo-thermal, Plasmonic catalysis, Solar therma