* NIMS: National Institute for Materials Science
The silver phosphate as a photocatalytic material discovered this time 1) photocatalytically reacts with water under visible light irradiation at normal temperature, and 2) the quantum efficiency of the silver phosphate is about 90% under visible light irradiation.
The photocatalyst is now attracting great attention.
For somewhat more detail, visit here (New Photocatalytic Material, 90% Quantum Efficiency Under Visible Light Irradiation).