نرگس مرادي اشرف ابادي

From the very beginning of human civilization, environmental pollution has been associated with humans, and with the growth of urban communities and lifestyle changes, the type of pollution and pollutants has increased. With the increase of pollution and the development of human knowledge about the dangers of environmental pollution, in recent decades, more attention has been paid to this issue. Climate pollution not only causes irreversible effects on health and the environment, but also pollutes and pollutes urban landscapes. Industrialized and developed countries, regardless of the continuous efforts to reduce or eliminate sources of pollution, have long used a variety of appropriate solutions to solve the problem of pollution. One of these solutions is the use of photocatalytic coatings. Photocatalytic dyes are polymeric compounds containing nanocatalysts that are used to convert hazardous contaminants into low-hazardous compounds. In addition to having a clean surface during service, these coatings also have the ability to purify and destroy contaminants around them. In this research, photocatalytic dye based on water-based acrylic resin with modified cerium oxide nanoparticles with the help of silane compounds has been studied. In this study, the effect of two types of surface modification with the help of silane amine bonding compounds on the photocatalytic properties of cerium oxide nanodarate has been investigated. For this purpose, cerium oxide nanoparticles were surface treated with four different concentrations of these two silane compounds. The success rate of the preparation process was measured by two tests of thermal gravimetry (TGA) and infrared spectroscopy (FTIR), which confirmed the chemical bond between the surface of nanoparticles and the modifying compounds. In this study, the effect of moisture on the nanoparticles was investigated and the results showed that the nanoparticles had the highest surface modification by moisture pretreatment (hydrothermal method). Tensile and visible-ultraviolet (UV-Vis) spectroscopy tests were used to eva‎luate the mechanical and photocatalytic properties of color-like samples. The results showed that modification of the surface of cerium oxide nanoparticles with silane modifiers with moisture pretreatment increases the mechanical and photocatalytic properties of the dye under ultraviolet and solar light. According to the results, after 300 minutes of UV irradiation, the percentage of MB degradation for CeO2, CeO2-1122-OH, CeO2-1151-OH were 30.61, 67.39 and 56.84, respectively. Also, under solar light, the destruction percentages were 26.32, 57.59 and 53.68, respectively.

فتوكاتاليست , نانوذرات سريم اكسايد , سيلان آميني , پيوندزني , لاتكس اكريليك , شبه رنگ

Photocatalyst , Cerium oxide nanoparticles , Amino silane , hybridization , Surface modification , Acrylic latex , Pseudo-paint

Narges Moradi

Dr. Masoud Jamshidi Dr. Mohammad Reza Moghbeli