My project is supposed to considered solar irradiation as an important variable for heterogeneous photocatalysis. I haven't found any study that considers solar geometry as a variable of study in said topic. I know heterogenenous photocatalysis depends mainly on light wavelenght (at less, with titanium dioxide) rather than on light intensity; some authors reported lower photocatalytic performance at higher light intensities.

If anyone could refer me to an study which relates any aspect related to solar geometry to heterogenous photocatalysis, I will be grateful.

Thank you so much for reading, and I do apologize in advance for any grammar mistakes in my post.