1. Biouels: An overview 2. Green approaches to blend fuels with nanomaterials 3. Nanomaterials as additives for use in conventional fuels 4. Nanomaterial-bound biocatalysts for fuel synthesis 5. Advanced techniques for the formulation of nano-additive blended fuels 6. Effect of nano-additives on the performance of ignition engines 7. Characteristics and effects on ignition of fuel with nano-sized materials 8. Biomass-derived additives as blends in fuels 9. Nano-formulated biofuels and their performance 10. Non-edible waste bio-based oils as additives in conventional fuels. Magnetic nano-fuels and their performance 11. CNT-based nano-fuels: performance and emission 12. 2D nanomaterials as lubricant additives 13. Graphene quantum dot/nanoplatelets as nano-lubricant additives 14. Metal oxide-based nanomaterials as additives in nano-fuels 15. Rare earth metals and their derivatives as additives in nano-fuels 16. Boron nanoparticles as nano-fuel additives 17. Cerium and aluminum-based nanomaterials as additives in nano-fuels 18. Radiation-mediated combustion of nano-fuels and its effects 19. Applications of nano-fuels in automobiles and industries 20. Effects of nano-fuel additives to reduce total emissions 21. Toxicity and hazardous effects of nano-additives in fuels 22. Adverse effects, on respiratory and nervous systems, of nanosized additives in fuel 23. Technical challenges and practical viability (Nano-fuels stability and durability) 24. Economy aspects and future visions