Improved photocatalytic hydrogen production property over Ni/NiO/N-TiO2−x heterojunction nanocomposite prepared by NH3 plasma treatment

Ni species are in intimate contact with TiO2 in Ni/NiO/N-TiO2−x nanocomposite, which cause the formation of heterostructure, thus improve the photogenerated charge separation and thereby promote the photocatalytic efficiency.