Nanodiamond supplies have potential as low-cost photocatalysts. However till now, such carbon nanoparticles required high-energy UV gentle to turn out to be energetic. The DIACAT consortium has subsequently produced and analysed variations of nanodiamond supplies. The work exhibits: If the floor of the nanoparticles is occupied by adequate hydrogen atoms, even the weaker power of blue daylight is adequate for excitation. Future photocatalysts primarily based on nanodiamonds would possibly be capable to convert CO2 or N2 into hydrocarbons or ammonia with daylight.