Department of Chemistry, Faculty of Science, Isra University, Amman 11622, Jordan.
Department of Chemistry, The University of Jordan, Amman 11942, Jordan.
Molecules. 2023 Jan 18;28(3):989. doi: 10.3390/molecules28030989.
TiO-Kaolinite nanocomposite photocatalysts were synthesized using the sol-gel method, with titanium isopropoxide/HCl as reactants and Jordanian kaolinite clay as a support material. The samples' TiO content ranged from 10% to 70% (m/m). TiO-Kaolinite composites were characterized using FTIR, SEM, XRF, and XRD. According to XRD measurements of the nano-composite samples, the intensity of the anatase peaks increased as the TiO percentage of the composition increased. As the percentage of TiO increased, so did the peaks of Ti-O-Si in FTIR. The extent of photocatalytic degradation of Congo-red dye was used to evaluate the photocatalytic activity of the prepared nanocomposites. After four hours under the sun, the percentage of Congo-red degradation ranged from 27 to 99 percent depending on the TiO content of the used nanocomposite. Meanwhile, the concentration drop in the dark did not exceed 10%. Photodegradation outperforms traditional treatment methods in terms of target degradation. Using naturally abundant materials such as clay in conjunction with metal oxides is widely regarded as an effective method of modifying the photoresponse properties of TiO particles, thereby improving solar light harvesting for target degradation.
采用溶胶-凝胶法制备了 TiO-Kaolinite 纳米复合材料，以钛异丙醇盐/HCl 为反应物，以约旦高岭土粘土为支撑材料。样品中的 TiO 含量在 10%-70%（m/m）之间。采用 FTIR、SEM、XRF 和 XRD 对 TiO-Kaolinite 复合材料进行了表征。根据纳米复合材料样品的 XRD 测量结果，随着组成中 TiO 百分比的增加，锐钛矿峰的强度增加。随着 TiO 百分比的增加，FTIR 中 Ti-O-Si 的峰也增加。使用刚果红染料的光催化降解来评估制备的纳米复合材料的光催化活性。在阳光下四个小时后，根据使用的纳米复合材料中 TiO 的含量，刚果红的降解率在 27%到 99%之间。同时，在黑暗中浓度下降不超过 10%。光降解在目标降解方面优于传统处理方法。使用粘土等天然丰富的材料与金属氧化物结合，被广泛认为是一种有效的方法，可以改善 TiO 颗粒的光响应特性，从而提高太阳能的收集，以实现目标降解。
