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利用水热法制备Ni S负载的Cd1-xZnxS光催化剂.结果表明:在0.35 mol·L-1Na2SO3和0.25 mol·L-1Na2S牺牲剂下,0.5%(摩尔分数,y)Ni S/Cd0.3Zn0.7S(1840μmol·h-1)获得最好活性,是Cd0.3Zn0.7S(884μmol·h-1)的2.1倍,高于0.5%(质量分数,w)Pt(1390μmol·h-1)的产氢活性.测得其在λ=420 nm附近的表观量子效率为36.8%.X射线衍射(XRD)、紫外-可见漫反射光谱(UV-Vis DRS)、透射电子显微镜(TEM)以及X射线光电子能谱(XPS)的表征结果表明,Ni S作为产氢活性位,转移光生电子,因此提高了光催化产氢活性.
NiS supported Cd1-xZnxS photocatalysts were prepared by hydrothermal method. The results showed that 0.5% (mole fraction, y) Ni S / Cd0.3Zn0 .7S (1840μmol · h-1) had the highest activity of 2.1 times higher than that of Cd0.3Zn0.7S (884μmol · h-1) and higher than 0.5% (mass fraction w) Pt Hydrogen evolution activity.The apparent quantum efficiency was measured at λ = 420 nm, and the apparent quantum efficiency was 36.8%. X-ray diffraction (XRD), UV-Vis DRS, transmission electron microscopy (TEM) The results of X-ray photoelectron spectroscopy (XPS) show that NiS acts as a hydrogen-generating active site and transfers photo-generated electrons, thereby increasing photocatalytic hydrogen production activity.