Efficient hydrogen production by composite photocatalyst CdS–ZnS/Zirconium–titanium phosphate (ZTP) under visible light illumination
Efficient hydrogen production by composite photocatalyst CdS–ZnS/Zirconium–titanium phosphate (ZTP) under visible light illumination
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DOI：
10.1016/j.ijhydene.2011.07.106
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发表时间：
2011-10
影响因子：
7.2
通讯作者：
N. Biswal;D. Das;Satyabadi Martha;K. Parida
中科院分区：
文献类型：
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作者：
N. Biswal;D. Das;Satyabadi Martha;K. Parida
采用两步硫化法制备了一种新型可见光下工作的CdS-ZnS /磷酸锆钛（ZTP）复合光催化剂。在空穴清除剂硫化物（S2−）存在的情况下，评价了硫化镉-硫化锌负载型复合催化剂的产氢活性，并与未使用任何助催化剂的纯CdS、ZnS、ZTP、CdS - ZnS、CdS/ZTP和ZnS/ZTP进行了比较。采用x射线衍射（小角x射线衍射研究和广角x射线衍射研究）、n2吸附-解吸、漫反射紫外-可见光谱（DRUV-vis）、光致发光（PL）、SEM/EDX、x射线光电子能谱（XPS）、透射电子显微镜（TEM）等手段对催化剂进行了表征。在可见光下，5CdS-ZnS /ZTP的产氢效率最高，为2142.7 μmol，表观量子效率为9.6%。
A novel composite CdS–ZnS/Zirconium–titanium phosphate (ZTP) photocatalyst working under visible light was successfully prepared by a two-step sulfidation procedure. The photocatalytic activity of the cadmium sulfide–zinc sulfide supported composite catalyst was evaluated toward hydrogen energy production in the presence of hole scavenger, sulfide (S2−) and compared with the activity of neat CdS, ZnS, ZTP, CdS–ZnS, CdS/ZTP and ZnS/ZTP without using any co-catalyst. The photocatalysts were characterized by X-ray diffraction (Small Angle X-ray diffraction Studies and Broad-Angle X-ray Diffraction studies), N2adsorption–desorption, diffuse reflectance UV–vis spectroscopy (DRUV-vis), photoluminescence (PL) studies, SEM/EDX, X-ray photoelectron spectroscopic (XPS) studies, transmission electron microscopy (TEM) etc. Amongst all the catalysts, 5CdS–ZnS/ZTP showed highest results toward hydrogen production (2142.7 μmol) with an apparent quantum efficiency of 9.6% under visible light illumination.