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Table 3 Characterization of nanomaterials.

From: Comparative toxicity of 24 manufactured nanoparticles in human alveolar epithelial and macrophage cell lines

Particle Name

Chemical Composition

Morphology

Spec. Surf. Area (m2/g)

Equivalent Spherical Diameter (nm)

Copper

Cu2O (71 Wt%)

CuO (22 Wt%)

Generally equiaxed particles

29.2

22.9

Copper (commercial source)

NA

Rounded agglomerated

7.18

90

Copper oxide (cuprous)

Cu2O

Rounded

10–11

83–94

Copper oxide (cupric)

CuO (95 Wt%)

Cu2O (5 Wt%)

Generally equiaxed particles

20.38

45.4

Copper oxide (cupric commercial source)

NA

Rounded

32

30

Copper-Zinc mixed oxide variants

CuO (60–69 Wt%)

ZnO (14–16 Wt%)

Soft agglomerates of nanopowder with some large particles

NA

NA

Zinc oxide stoechiometric

ZnO (99.5 Wt%)

Irregular

19.94

53.6

Zinc-Titania mixed oxide variants 50-50 mix

ZnO (28.8 Wt%)

TiO2 (5.1/12.7 Wt%)

Zn2TiO4 (53.5 Wt%)

Spherical/Rounded

36.7

36.7

Titania stoechiometric

Anatase TiO2 (99.87 Wt%)

Rounded/Spherical

114.7

12.2

Titania non-stoechiometric

Ti4O7 (39 Wt%)

Ti10O18 (18 Wt%)

Ti6O11 (10 Wt%)

Rutile TiO2 (20 Wt%)

Anatase TiO2 (13 Wt%)

Soft agglomerates of nanopowder with some large particles

12.38

112

Silver

Ag (96.3 Wt%)

AgNO2 (3.7 Wt%)

Rounded, in necklace form

1.83

312

Silver (commercial source)

NA

Irregular

4

142

Cobalt

Co (91.49 Wt%)

O (5.4 Wt%)

Rounded/Spherical

15.76

42.8

Cobalt (commercial source)

NA

Small particles necklaced together

29.2

20

Nickel-Cobalt-Manganese mixed variants

Ni (28.5 Wt%)

Co (25.5 Wt%)

Mn (21.2 Wt%)

Cuboid/Hexagonal

18.3

53.4

Nickel

Ni (96.99 Wt%)

O (2.57 Wt%)

Rounded/Spherical

9.6–10.4

64–69

Nickel oxide

NA

Cubic

18.4

48.9

Zirconia

ZrO2 (>98.5 Wt%)

Rounded/Spherical

32

32

Yttria doped Zirconia

ZrO2 (94–96 Wt%)

Y2O3 (4–6 Wt%)

Rounded/Spherical

32

33.5

Stainless steel

Fe (59.21 Wt%)

Cr (20.21 Wt%)

Ni (9.12 Wt%)

Mo (1.02 Wt%)

Si (1.01 Wt%)

Mn (0.33 Wt%)

Rounded/Spherical

18.4

40.9

Alumina

Al2O3

Rounded/Spherical

24–36

40–68

Tin oxide

Sn

Irregular

26

33

Tungsten carbide

WC (46 Wt%)

W (46 Wt%)

WO3 (8 Wt%)

Mixture of spherical and angular particles

8.89

43.07

Ceria

CeO2/TREO (Total Rare Earth Oxide)

Rounded

25.21

33.4

  1. Chemical composition was analyzed by Inductively Coupled plasma spectromtery ICPS/X ray fluorescence spectrometry(XRF) and Leco Combustion analysis. Particle morphology by field emission scanning electron microscopy, Specific surface area (Spec. Surf. Area) was quantified by BET method (Brunauer, Emmett and Telle), and the equivalent spherical sample Diameter calculated from the surface area measurement. The sample of nanopowder were supplied by QinetiQ Nanomaterials Ltd, now called Intriniq Materials Ltd, UK. NA = not available.