CAJ | 학술논문

利用水热法制备 NiS 负载的 Cd1-xZnxS 光催化剂.结果表明：在0.35 mol?L-1 Na2SO3和0.25 mol?L-1 Na2S牺牲剂下,0.5%(摩尔分数, y) NiS/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, NiS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.
이용수열법제비 NiS 부재적 Cd1-xZnxS 광최화제.결과표명：재0.35 mol?L-1 Na2SO3화0.25 mol?L-1 Na2S희생제하,0.5%(마이분수, y) NiS/Cd0.3Zn0.7S (1840μmol?h-1)획득최호활성,시Cd0.3Zn0.7S (884μmol?h-1)적2.1배,고우0.5%(질량분수, w) Pt (1390μmol?h-1)적산경활성.측득기재λ=420 nm부근적표관양자효솔위36.8%. X사선연사(XRD)、자외-가견만반사광보(UV-Vis DRS)、투사전자현미경(TEM)이급X사선광전자능보(XPS)적표정결과표명, NiS작위산경활성위,전이광생전자,인차제고료광최화산경활성.
NiS-modified Cd1-xZnxS has been prepared using a simple hydrothermal method. Notably, the H2 evolution rate of 0.5% (y, molar fraction) NiS/Cd0.3Zn0.7S (1840 μmol?h-1) was found to be 2.1- and 1.3-fold greater than those of Cd0.3Zn0.7S (884 μmol?h-1) and 0.5% (w, mass fraction) Pt (1390 μmol?h-1), respectively, when 0.35 mol?L-1 Na2SO3 and 0.25 mol?L-1 Na2S were used as sacrificial agents. The apparent quantum efficiency of 0.5%(y) NiS/Cd0.3Zn0.7S at 420 nm was 36.8%. The characterization of this material by X-ray diffraction (XRD), ultraviolet-visible diffuse reflection spectroscopy (UV-Vis DRS), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS) showed that the NiS particles provided the active sites required for H2 evolution and transferring the photo generated electrons, and therefore enhanced the photocatalytic activity of the catalyst towards H2 production.