Mainly 2 euhedral morphologies: aspect ratio of 1 (20–250 nm and 400 nm) and 2:7,5 (50-350 nm)
circles, ellipses, rectangles or squares
equi-axed and rounded, or slightly elongated
Mainly 2 euhedral morphologies: aspect ratio 1(20–250 nm) and aspect ratio 2:8.5 (10–450 nm)
Two structures found; type 1 show agglomerates in the 50–1500 nm range
Heterogeneous (round, triangular or trapezium-like)
irregular spheres (1–4 nm), euhedral particle (10–100 nm), fractal-like structures (100–200 nm), big irregular polyhedral parti
near spherical rather than polyhedral with regular morphology
Entangled irregular, mostly bent, some no-onions
Irregular entangled kinked and mostly bent
Mainly euhedral (some elongated or sub-spherical)