Laboratory of Energy and Materials (LABEM), High School of Sciences and Technology of Hammam Sousse, Sousse University-Tunisia, Hammam, 4011, Hammam Sousse, Tunisia.
Department of Environmental Technology: Chair of Environmental Process Engineering, Chemistry Department, University TU Berlin, Sekr. TC8 10623, Berlin, Germany.
Environ Sci Pollut Res Int. 2021 Jul;28(27):35991-36003. doi: 10.1007/s11356-021-13150-y. Epub 2021 Mar 8.
Photocatalysis is one of the most important process and was used to eliminate various organic pollutants as phenol in water. In this research study, a new composite containing Kaolinite, cement, and wood fibers modified by titanium oxide TiO was elaborated in order to be used in addition of building materials, as photocatalyst for the degradation of phenol. Different kinds and amounts of TiO (PC500, P90, and C-TiO) were immobilized by a simple method inside the composite materials based. The matrix of the hybrid materials was characterized by Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), N adsorption-desorption (BET), and scanning electron microscope (SEM). These investigations confirmed the dispersion of titania in the new composite materials. The FTIR result has shown that clay particles were successfully treated before their insertion in the composite, by the appearance of two peaks at 2921-2851 cm. The XRD results reveal the identification of crystalline phase of TiO as anatase. The photocatalytic activity of the composite materials was investigated towards degradation of phenol in aqueous solution under UV light irradiation (369 nm). It has been found that photocatalytic efficiency was significantly enhanced when TiO is added. The highest photocatalytic activity has been shown by 3% P90-comp of 41.65% in comparison with 3% PC500 and 3% C-TiO which are 29.88% and 22.64 %, respectively. It was shown that the experimental data of kinetic reaction are well fitted by first-order model.
光催化是最重要的过程之一，被用于消除水中的各种有机污染物，如苯酚。在这项研究中，研制了一种新型复合材料，其中包含高岭土、水泥和经过氧化钛（TiO）改性的木材纤维，以便作为建筑材料的添加剂，作为苯酚降解的光催化剂。通过简单的方法，将不同种类和数量的 TiO（PC500、P90 和 C-TiO）固定在基于复合材料的内部。通过傅里叶变换红外（FTIR）光谱、X 射线衍射（XRD）、N 吸附-解吸（BET）和扫描电子显微镜（SEM）对混合材料的基质进行了表征。这些研究证实了 TiO 在新型复合材料中的分散性。FTIR 结果表明，粘土颗粒在插入复合材料之前已成功进行处理，通过在 2921-2851 cm 处出现两个峰来证明。XRD 结果表明 TiO 为锐钛矿晶相的识别。研究了复合材料在紫外光（369nm）照射下对水溶液中苯酚的光催化降解活性。结果表明，添加 TiO 时，光催化效率显著提高。在 3% P90-comp 的 41.65%的情况下，表现出最高的光催化活性，而 3% PC500 和 3% C-TiO 分别为 29.88%和 22.64%。结果表明，动力学反应的实验数据很好地符合一级模型。
