1. Artificial Photosynthesis: Developing catalysts that can mimic natural photosynthesis to produce fuels like hydrogen from water and sunlight. 2. CO2 Reduction: Designing catalysts that can convert carbon dioxide into valuable chemicals, thus mitigating greenhouse gas emissions. 3. Biomass Conversion: Creating efficient catalytic processes to convert biomass into biofuels and biochemicals, providing a sustainable alternative to fossil fuels.