Table 14 Role guise meanings in Brooks et al. (2013)

4.1

as chemical potential

6.3,

as a mobile fuel.

7.1

as a promising candidate

15

as a transportable, abundant solar fuel

16.1

as a renewable solar fuel

20

as PSs

23.2

as photocatalysts

28.2

as a solar fuel

4

3

1

1