1. Global CO2 emissions and their impact 2. Impact of presence of CO2 in natural gas streams 3. CO2 capture and conversion technologies 4. Synthesis of nanomaterials and their characterization techniques 5. Nanomaterials for CO2-sensing applications 6. Nano-sorbents for CO2 removal 7. Nanofluids for CO2 removal 8. Waste and biomass-based nanomaterials for CO2 removal 9. Graphene-based nanomaterials for capture and conversion 10. Carbon nanotubes for CO2 capture and conversion 11. Metallic organic frameworks embedded with nanoparticles for CO2 capture and conversion 12. Nanosized zeolites for CO2 capture and conversion 13. Mesoporous silica nanoparticles for CO2 mitigation 14. Titanium-based nanomaterials for CO2 reduction 15. Copper-based nanomaterials for CO2 reduction 16. Amine-functionalized nanomaterials for CO2 mitigation 17. Ionic liquid-functionalized nanomaterials for CO2 18. Perovskite-based nanomaterials for CO2 removal 19. Nanomaterial-based membranes for CO2 removal 20. Future challenges and perspectives for the use of nanomaterials for CO2 mitigation technologies