In this article, we prepared efficient ZnO@MoS2 composites through hydrothermal and solvothermal method for photocatalytic hydrogen evolution. The structural, morphological, surface area and optical properties were investigated using transmission electron microscopy (HR-TEM), X-ray diffractometer (XRD), Brunauer Emmett Teller (BET), UV–visible (UV-vis) absorption and Photoluminescence (PL) emission spectroscopy. The incorporating effect of MoS2 on the photocatalytic performance of ZnO photocatalyst has been studied. The PL emission spectra of prepared composites elucidate that recombination of electron/hole pairs is greatly suppressed owing to the incorporation of MoS2 sheet-like nanostructures. The composite sample (3wt % of MoS2 in ZnO) showed the excellent photocatalytic efficiency when compared to pure photocatalyst. The considerable increase in the efficiency of nanocomposites may be accredited to extended absorption region, favorable band structure, and effective separation of charge carriers, large surface area and the reactive active sites provided by layered structure of MoS2. This study demonstrates that prepared composites could be promising and efficient photocatalysts for the evolution of hydrogen through water-splitting under visible light illumination.

本文通过水热和溶剂热法制备了高效的ZnO @ MoS2复合材料，用于光催化制氢。使用透射电子显微镜（HR-TEM），X射线衍射仪（XRD），Brunauer Emmett Teller（BET），UV-可见（UV-vis）吸收和光致发光（PL）研究了结构，形态，表面积和光学性质）发射光谱。研究了MoS2对ZnO光催化剂光催化性能的影响。制备的复合材料的PL发射光谱表明，由于引入了MoS 2片状纳米结构，大大抑制了电子/空穴对的复合。与纯光催化剂相比，复合样品（ZnO中MoS2的3wt％）显示出优异的光催化效率。纳米复合材料效率的显着提高可以归因于扩展的吸收区域，有利的能带结构以及有效的载流子分离，大的表面积以及由MoS2的层状结构提供的反应活性位点。这项研究表明，制备的复合材料对于在可见光照射下通过水分解产生的氢气来说，可能是有前途的高效光催化剂。