Birnessite 1 CO2 separation 1 History of engineering & technology 1 SERS 1 adsorption mechanism 1 amine modification 1 buckling 1 chemisorption of CO2 1 crystal silicon photoluminescence 1 dip coating 1 direct growth 1 electron selective layer 1 esterification 1 evaporation-induced self-assembly 1 first-order shear deformation theory 1 free vibration 1 host-guest materials 1 hot-spots 1 impedance spectroscopy 1 magic-angle spinning NMR (MAS-NMR) material formation 1 mesoporous TiO2 1 mesoporous films 1 mesoporous silica 1 nanoporous metal foam 1 nanoporous metal oxides 1 nanoshell 1 near-infrared 1 organocatalysis 1 perovskite solar cell 1