Nickel phosphide modified phosphorus doped gallium oxide for visible light photocatalytic water splitting to hydrogen
Nickel phosphide(Ni2P)modified phosphorus doped gallium oxide(Ga2O3)(x-Ni2P/Ga2O3-Py,x represents the molar ratio of Ni2+and Ga2O3,y represents the molar ratio of NaH2PO·H2O and Ga2O3)photocatalyst was pre-pared by impregnation and low temperature phosphating method using Ga2O3 semiconductor as a precursor.5％-Ni2P/Ga2O3-P6 exhibits excellent photocatalytic hydrogen evolution activity in pure water and has a photo quantum efficiency of 0.22％under 430 nm monochromatic light irradiation.The mechanism study shows that phosphorus doping and Ni2P cocatalyst modification extend the photo-response range and promote carrier separation and migra-tion efficiency.The long-term photocatalytic stability is better than that of a non-phosphating catalyst.
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维普
