Material

Abbreviation in this study

Primary particle size (nm)

Specific surface area (m2/g)

NiO

nNiO

<100

74.9

NiO

fNiO

600 - 1400

3.44

ZnO

ZnO

21

31.5

CuO

CuO

48

12.8

MgO

MgO

20

44.2

CaCO3

CaCO3

30

ND