Sci-Fi (YA?) novel in space with human photosynthesis, read around 2010

[Lukas]

Hello, I am currently searching for a book that I read as a soft-cover in around 2011, possibly earlier.

Some meta-infos:
- Book was probably somewhat new at that time
- Read it in german, there might be a chance it's not known internationally
- I was 14-15 at that time, so it couldn't have been super complex
- Must have owned (or borrowed?) it as a soft-cover

About the contents of the book:
I remember there was a selected group of people that had the ability to do photosynthesis with their skin. I believe there was an emphasis on chlorophyll being in their blood. As a result, they had some slight superhuman capabilities. Nothing supernatural, mostly increased strength and resistances. A lot of the plot took place on space ships and/or space stations.
I am unsure what the overarching point of the plot was, possibly some cliché world-saving stuff.

Sorry for the rather vague description. I would be very surprised, yet pleased, if you could make something of this. Spent a fair bit of research before posting without any luck.
Thanks for reading.

[David]

Hi, Lukas

Do you remember anything about the cover? Might be helpful

[Lukas]

Hi, David. Unfortunately I do not remember what the cover looked like.