دورية أكاديمية
A Study on Modified Bitumen with Metal Doped Nano-TiO2 Pillared Montmorillonite
| العنوان: | A Study on Modified Bitumen with Metal Doped Nano-TiO2 Pillared Montmorillonite |
|---|---|
| المؤلفون: | Jiao Jin, Bozhen Chen, Lang Liu, Ruohua Liu, Guoping Qian, Hui Wei, Jianlong Zheng |
| المصدر: | Materials, Vol 12, Iss 12, p 1910 (2019) |
| بيانات النشر: | MDPI AG, 2019. |
| سنة النشر: | 2019 |
| المجموعة: | LCC:Technology LCC:Electrical engineering. Electronics. Nuclear engineering LCC:Engineering (General). Civil engineering (General) LCC:Microscopy LCC:Descriptive and experimental mechanics |
| مصطلحات موضوعية: | bitumen, montmorillonite, metals doped, automobile exhaust, photocatalytic, Technology, Electrical engineering. Electronics. Nuclear engineering, TK1-9971, Engineering (General). Civil engineering (General), TA1-2040, Microscopy, QH201-278.5, Descriptive and experimental mechanics, QC120-168.85 |
| الوصف: | TiO2 pillared montmorillonite (T/M) modifiers have been studied to alleviate the aging of asphalt pavement and degrade automobile exhaust, but the photocatalytic activity of ordinary TiO2 is not good enough. In this study, in order to improve the photocatalytic performance of T/M, different metal (Ce, Cu, Fe) doped modifiers were prepared based on T/M. Metal doped TiO2 pillared montmorillonite was prepared by the sol-gel method. The modifier was characterized by X-ray diffraction (XRD) and an Ultraviolet visible (UV-Vis) spectrophotometer. The results show that TiO2 with different metal ions successfully entered into the layer of organic montmorillonite (OMMT) to form a pillared structure. Compared with the undoped TiO2 pillared montmorillonite (T/M), the optical absorption edge of the metal doped TiO2 pillared montmorillonite has an obvious red shift. In addition, the influences of the different content of modifiers on the properties of the original bitumen and catalytic capacities for automobile exhaust were also investigated. The results show that Ce doped TiO2 (Ce-T/M) pillared montmorillonite has the best improvement in high temperature performance and ultraviolet (UV) resistance of bitumen. In the experiment of automobile exhaust degradation, the degradation law of NO and HC showed Cu-T/M > Ce-T/M > Fe-T/M > T/M. These three kinds of metal ions can effectively improve the photocatalytic degradation efficiency of T/M. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1996-1944 43755488 |
| Relation: | https://www.mdpi.com/1996-1944/12/12/1910; https://doaj.org/toc/1996-1944 |
| DOI: | 10.3390/ma12121910 |
| URL الوصول: | https://doaj.org/article/3028a6e437554885b8726988613534c0 |
| رقم الأكسشن: | edsdoj.3028a6e437554885b8726988613534c0 |
| قاعدة البيانات: | Directory of Open Access Journals |
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