A new paper from Junqing Yan, titled "Understanding the effect of surface/bulk defects on the photocatalytic activity of TiO2: Anatase versus Rutile", was accepted by Phys Chem Chem Phys.

A direct correlation between the surface specific photocatalytic activity and the surface/bulk defect density ratio is drawn for TiO2

²⁰¹²IF_{Phys Chem Chem Phys}=3.573