Solvothermal Synthesis of Ca2Nb2O7 Fine Particles and Their High Activity for Photocatalytic Water Splitting into H2 and O2 under UV Light Irradiation

Fine particles of calcium niobate Ca2Nb2O7 with diameters of 200-300 nm were prepared via combination of solvothermal synthesis and post-calcination; the obtained Ca2Nb2O7 particles with orthorhombic phase showed much higher activity for photocatalytic water-splitting under UV light irradiation than those prepared via other conventional synthesis methods.