In the present work, we elaborated the CdS–TiO₂ (CSTO) composite materials and considered their micro-structural and optical properties were investigated. The micro-structure and optical properties were examined by TEM, XRD, absorption and PL. The particles dimensions of composite have been varied from 18 to 22 nm while the typical crystalline size of TiO₂ sample materials was varied involving the 9 nm and 14 nm. The direct band-gap of TiO₂ nano-particles is 3.33 eV and E_g of CSTO sample is enlarged to 3.31 eV. The TEM show the existence of the CdS could efficiently hibit the agglomeration of the CSTO and progress the dispersion of particles. The photo-luminescence (PL) spectra illustrate that the CSTO sample has two tough emissions. These clarification results from the creation of the CSTO bond and the existence of CdS roughly anatase, which would impede the development of TiO₂ powder. The internal micro-structure, thus obtained will make the permanence of our composite sample, allowing a development of optical features of TiO₂ composite.

中文翻译：

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TiO 2纳米颗粒和CdS–TiO 2纳米复合材料的微观结构演变和光学性能

在目前的工作中，我们精心制作了CdS-TiO ₂（CSTO）复合材料，并考虑了它们的微观结构和光学性能。通过TEM，XRD，吸收和PL检查了显微结构和光学性质。复合材料的颗粒尺寸在18到22 nm之间变化，而TiO ₂样品材料的典型晶体尺寸在9 nm和14 nm之间变化。TiO ₂纳米粒子的直接带隙为3.33 eV和E _gCSTO样本的最大值扩大到3.31 eV。TEM显示CdS的存在可以有效地抑制CSTO的团聚并促进颗粒的分散。光致发光（PL）光谱说明CSTO样品具有两个强发射。这些澄清是由于CSTO键的产生和CdS大致为锐钛矿的存在，这将阻碍TiO ₂粉末的发展。由此获得的内部微观结构将使我们的复合材料样品具有永久性，从而可以开发TiO ₂复合材料的光学特性。