ZnO nanoparticles have been previously synthesized by a facile precipitation procedure by mixing aqueous solutions of Zn(II) acetate and dissolved Na₂CO₃ at pH ca. 7.0 without the addition of a template. The as-prepared ZnO material was anealed at 400 °C in air for 2 h. The Pt-ZnO catalysts (0.5 or 1.0 Pt wt.%) were obtained by photochemical deposition method on the surface of the prepared ZnO sample, using hexachloroplatinic acid (H₂PtCl₆). It has been shown that Zn²⁺ is lost from the photocatalyst to the medium and a replacement of the cationic vacancies of Zn²⁺ by Pt⁴⁺ cations occurs during the platinization process of the ZnO samples, regardless of whether the platinum metal photodeposition process. The as-prepared catalysts were characterized by XRD, BET, FE-SEM, TEM, XPS and diffuse reflectance spectroscopy (DRS). Three different probe molecules were used to evaluate the photocatalytic properties under UV-illumination: Methyl Orange and Rhodamine B were chosen as dye substrates and Phenol as a transparent substrate. High conversion values (ca. 100%) and a total organic carbon (TOC) removal of 90–96%, were obtained over these photocatalysts after 160 min of UV illumination. In general, it was observed that the presence of Pt on ZnO affects the lattice parameters and the crystallite size. Although ZnO can completely degrade RhB, MO and Phenol totally in ca. 60 min, the process is more efficient for Pt–ZnO photocatalysts.

ZnO纳米颗粒事先通过简便的沉淀步骤合成，方法是将醋酸Zn（II）的水溶液和溶解的Na ₂ CO ₃在pH约pH的条件下混合。7.0无需添加模板。将制备好的ZnO材料在空气中于400°C密封2小时。使用六氯铂酸（H ₂ PtCl ₆），通过光化学沉积法在制得的ZnO样品表面上获得Pt-ZnO催化剂（0.5或1.0 Pt wt。％）。已经表明，Zn ²⁺从光催化剂流失到介质中，并且用Pt ⁴⁺代替了Zn ²⁺的阳离子空位。不论铂金属是否进行光沉积过程，阳离子都会在ZnO样品的镀铂过程中发生。所制备的催化剂通过XRD，BET，FE-SEM，TEM，XPS和漫反射光谱法（DRS）进行表征。三种不同的探针分子用于评估在紫外线照射下的光催化性能：选择甲基橙和若丹明B作为染料底物，选择苯酚作为透明底物。在160分钟的紫外线照射下，这些光催化剂获得了很高的转化率（约100％）和90-96％的总有机碳去除率。通常观察到，ZnO上Pt的存在会影响晶格参数和微晶尺寸。尽管ZnO可以完全降解RhB，MO和苯酚。60分钟