Electrocatalytic conversion of environmental molecules (CO₂, CH₄, N₂O, NOx, biomass) into valuable chemicals or fuels is crucial for achieving carbon neutrality and sustainable nitrogen cycles. The technique, nevertheless, still suffers from low efficiency, poor selectivity, and high energy consumption. Our research focus on extracting metals from solid waste to create eco-friendly electro-catalysts,supporting waste-to-resource paradigm that aligns with circular economy goals. We are also working on the application of high energy radiation for energy and electronics.