Table 1.

Characterization of pristine nanoparticles (NPs). TiO₂-NPs were provided by ICN2, Ag-NPs by Fraunhofer IME and ZnO-NPs by JRC. TMAOH: tetramethylammonium hydroxide. PGT: polyoxyethylene glycerol trioleate. PEG: polyethylene glycol, TEM: transmission electron microscopy. NA: not available.

NP	Code	Product Type	Solvent	Polymorph	Morphology	Surface Functionali-zation	TEM Diameter (nm)	Surface Area (m2/g)	Ref.
TiO2	-	Dispersion	TMAOH	Anatase	Quasi-sphere	TMAOH	5.54 ± 0.98	NA
Ag	NM300K	Dispersion	PGT (4%), Tween 20 (4%)	Metallic	Sphere	PEG	<20 nm	NA	[42]
ZnO	NM110/JRCNM01100a	Powder	-	Zincite	Variable	Uncoated	147 ± 149	12.4 ± 0.2	[43]