Academic Journal
Flexible hierarchical Pd/SiO2-TiO2 nanofibrous catalytic membrane for complete and continuous reduction of p-nitrophenol
| العنوان: | Flexible hierarchical Pd/SiO2-TiO2 nanofibrous catalytic membrane for complete and continuous reduction of p-nitrophenol |
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| المؤلفون: | Zhiwei Pan, Xinru Zhu, Hong Jiang, Yefei Liu, Rizhi Chen |
| المصدر: | Journal of Experimental Nanoscience, Vol 16, Iss 1, Pp 62-80 (2021) |
| بيانات النشر: | Taylor & Francis Group, 2021. |
| سنة النشر: | 2021 |
| المجموعة: | LCC:Materials of engineering and construction. Mechanics of materials LCC:Chemical technology |
| مصطلحات موضوعية: | nanofibrous catalytic membrane, flexible, hierarchical, tio2 nanorods, p-nitrophenol, Materials of engineering and construction. Mechanics of materials, TA401-492, Chemical technology, TP1-1185 |
| الوصف: | Flexible and hierarchical nanostructured Pd/SiO2-TiO2 nanofibrous catalytic membranes were fabricated via combining electrospinning technique and a two-step hydrothermal method. The size and distribution of TiO2 nanorods immobilised on SiO2 nanofibrous membranes can be regulated via adjusting the dosage of TiCl3 solution in the first step hydrothermal process. When using an optimal TiCl3 solution dosage of 0.2 mL, a hierarchical structured Pd/SiO2-TiO2-0.2 nanofibrous catalytic membrane with uniformly dense TiO2 nanorods loaded on SiO2 nanofibers is obtained, and still shows good tensile strength and flexibility. The catalytic activity of Pd/SiO2-TiO2-0.2 increases 5 times as compared to Pd/SiO2-TiO2-0 in the reduction of p-nitrophenol (PNP) to p-aminophenol (PAP). The modification with TiO2 nanorods can provide more surface areas for loading the Pd nanoparticles, thereby increased active sites. The three-dimensional open-cell network stacked and assembled by thousands of SiO2 nanofibers and TiO2 nanorods enhances the contact between the reactants and Pd nanoparticles. Both aspects contribute the superior catalytic activity of Pd/SiO2-TiO2-0.2. Furthermore, a continuous and complete conversion of PNP to PAP can be stably operated over 240 min in a gravity-driven catalytic membrane reactor constructed by Pd/SiO2-TiO2-0.2. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1745-8080 1745-8099 17458080 |
| Relation: | https://doaj.org/toc/1745-8080; https://doaj.org/toc/1745-8099 |
| DOI: | 10.1080/17458080.2021.1904137 |
| URL الوصول: | https://doaj.org/article/8b8c996521cd49428450c95cef89e5d8 |
| رقم الانضمام: | edsdoj.8b8c996521cd49428450c95cef89e5d8 |
| قاعدة البيانات: | Directory of Open Access Journals |
| تدمد: | 17458080 17458099 |
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| DOI: | 10.1080/17458080.2021.1904137 |