Constructing Ternary Photocatalyst Ag/Ni(OH)2/g‐C3N4 for Efficient Photocatalytic Hydrogen Production

Abstract A series of ternary Ag/Ni(OH) 2 /g‐C 3 N 4 composite photocatalysts were prepared by a facile method. The as‐prepared samples were characterized by powder X‐ray diffraction (XRD), Fourier transform infrared (FT‐IR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and UV‐vis diffuse reflectance spectra (DRS). Photocatalytic water splitting for hydrogen was carried out to evaluate the photocatalytic performance of the as‐prepared samples and the effect of Ag and Ni(OH) 2 content was explored. The results indicated that the A5N5−CN sample shows the optimal hydrogen evolution of 1663.2 μmol g −1 h −1 , which was 114.7 times higher than that of bulk g‐C 3 N 4 . The enhanced photocatalytic activity can be ascribed to the synergistic effect of cocatalysts Ag and Ni(OH) 2 .