Recycling and photodegradation processes of organic hazardous materials on polyaniline-titanium dioxide quantum dots catalyst

Q1 Earth and Planetary Sciences
Amr A. El Sammak , Walied A.A. Mohamed , Elsayed M. Elnaggar , Badr A. El-Sayed
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引用次数: 0

Abstract

A photo-catalyst with conducting polymers doped with titanium dioxide, known as TiO2 quantum dots (TiO2 QDs), has a high efficiency for photocatalytic usage. The organic hue methyl orange was broken down in the current study using polyaniline (PANI) and polyaniline titanium dioxide quantum dots (PANI-TiO2 QDs) polymers. PANI and PANI-TiO2 QDs have been produced by chemical oxidative polymerization in an aqueous solution. By characterization of PANI-TiO2 QDs nanocomposites using ultraviolet–visible (UV–vis), Fourier transform infrared (FTIR), and X-ray powder diffraction (XRD), it was demonstrated that the chemical structure of polymer composites had not changed after being doped with TiO2 QDs. To determine the form, size, surface area, and thermal analyses of the produced PANI-TiO2 QDs samples, EDX, BET, and TGA were used. The photocatalytic activity of the PANI-TiO2 QDs in the photo-degradation of methyl orange dye as an organic hazardous chemical in an aqueous medium was assessed using a 50-watt xenon lamp light source and direct sunlight. PANI-TiO2 QDs demonstrated high photocatalytic properties, with a 93% efficiency, as opposed to 35% and 60.1%, respectively, for PANI and TiO2 QDs. When PANI, titanium dioxide quantum dots, and PANI-TiO2 QDs are present during the recycling processes in the presence of all created samples up to four times, the photo-degradation rate decreases by about 50.2%, 15.4%, and 17.4%, respectively.

聚苯胺-二氧化钛量子点催化剂上有机有害物质的回收及光降解过程
二氧化钛量子点(TiO2 QDs)是一种掺杂二氧化钛的导电聚合物的光催化剂,具有很高的光催化效率。本研究采用聚苯胺(PANI)和聚苯胺二氧化钛量子点(PANI- tio2 QDs)聚合物对有机色相甲基橙进行了分解。在水溶液中通过化学氧化聚合制备了聚苯胺和聚苯胺-二氧化钛量子点。通过紫外-可见(UV-vis)、傅里叶变换红外(FTIR)和x射线粉末衍射(XRD)对聚苯胺-TiO2量子点纳米复合材料进行表征,结果表明掺杂TiO2量子点后聚合物复合材料的化学结构没有发生变化。为了确定生成的PANI-TiO2量子点样品的形状、大小、表面积和热分析,使用了EDX、BET和TGA。在50瓦氙灯光源和直射阳光下,研究了PANI-TiO2量子点在水介质中光催化降解甲基橙染料的活性。PANI-TiO2量子点的光催化效率为93%,而PANI和TiO2量子点的光催化效率分别为35%和60.1%。当PANI、二氧化钛量子点和PANI- tio2量子点在所有生成的样品中存在四次以上时,光降解率分别下降了约50.2%、15.4%和17.4%。
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来源期刊
Egyptian Journal of Petroleum
Egyptian Journal of Petroleum Earth and Planetary Sciences-Geochemistry and Petrology
CiteScore
7.70
自引率
0.00%
发文量
29
审稿时长
84 days
期刊介绍: Egyptian Journal of Petroleum is addressed to the fields of crude oil, natural gas, energy and related subjects. Its objective is to serve as a forum for research and development covering the following areas: • Sedimentation and petroleum exploration. • Production. • Analysis and testing. • Chemistry and technology of petroleum and natural gas. • Refining and processing. • Catalysis. • Applications and petrochemicals. It also publishes original research papers and reviews in areas relating to synthetic fuels and lubricants - pollution - corrosion - alternate sources of energy - gasification, liquefaction and geology of coal - tar sands and oil shale - biomass as a source of renewable energy. To meet with these requirements the Egyptian Journal of Petroleum welcomes manuscripts and review papers reporting on the state-of-the-art in the aforementioned topics. The Egyptian Journal of Petroleum is also willing to publish the proceedings of petroleum and energy related conferences in a single volume form.
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