Modrogan Cristina, Cǎprǎrescu Simona, Dǎncilǎ Annette Madelene, Orbuleț Oanamari Daniela, Grumezescu Alexandru Mihai, Purcar Violeta, Radițoiu Valentin, Fierascu Radu Claudiu
Department of Analytical Chemistry and Environmental Engineering, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, Ghe. Polizu Street No 1-7, 011061 Bucharest, Romania.
Inorganic Chemistry, Physical Chemistry and Electrochemistry Department, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, Ghe. Polizu Street No 1-7, 011061 Bucharest, Romania.
Polymers (Basel). 2021 Nov 12;13(22):3911. doi: 10.3390/polym13223911.
The goal of the present paper was to synthesize, characterize, and evaluate the performance of the modified composite based on magnetite (FeO) and polyvinyl alcohol (PVA). The obtained composite was used to degrade Methyl Orange dye from synthetic wastewater by a laboratory photocatalytic reactor. Various parameters of the photodegradation process were tested: composite dosage, amount of hydrogen peroxide (HO), and pH. The composite was characterized by Fourier Transform Infrared (FTIR) Spectroscopy, X-ray Diffraction (XRD), and Scanning Electron Microscopy (SEM). The degradation experiments indicated that the complete dye decolorization depended on the amount of HO. In addition, the HO could accelerate Methyl Orange degradation to more highly oxidized intermediates in the presence of UV light (99.35%). The results suggested that the obtained modified composite could be used to treat wastewater containing various types of dyes.
本文的目的是合成、表征并评估基于磁铁矿（FeO）和聚乙烯醇（PVA）的改性复合材料的性能。通过实验室光催化反应器，使用所得复合材料降解合成废水中的甲基橙染料。测试了光降解过程的各种参数：复合材料用量、过氧化氢（HO）用量和pH值。通过傅里叶变换红外（FTIR）光谱、X射线衍射（XRD）和扫描电子显微镜（SEM）对复合材料进行了表征。降解实验表明，染料的完全脱色取决于HO的用量。此外，在紫外光（99.35%）存在下，HO可加速甲基橙降解为氧化程度更高的中间体。结果表明，所得改性复合材料可用于处理含各种染料的废水。
