TY - JOUR TI - Biogenic SiO₂ Nanoparticles Derived from Diatomaceous Biosludge for Sub-ambient Radiative Cooling Geopolymer Coatings AU - Gayathri S AU - Swetha A AU - Arun Kumar AU - Muniyasamy M K AU - Premkumar S AU - Pavithra G PY - 2026 DO - 10.13074/jent.2026.03.2612083 T2 - Journal of Environmental Nanotechnology JF - Journal of Environmental Nanotechnology JA - J. Environ. Nanotechnol. SP - 643 EP - 657 VL - 15 IS - 1 PB - Institute for Environmental Nanotechnology ER -