Vitamin C-Assisted Fabrication of Aerogels from Industrial Graphene Oxide for Gaseous Hexamethyldisiloxane Adsorption
| العنوان: | Vitamin C-Assisted Fabrication of Aerogels from Industrial Graphene Oxide for Gaseous Hexamethyldisiloxane Adsorption |
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| المؤلفون: | Xiaolong Ma, Zichuan Ma, Yanhui Zheng, Zelin Hao, Xifeng Hou |
| المصدر: | Applied Sciences Volume 11 Issue 18 Applied Sciences, Vol 11, Iss 8486, p 8486 (2021) |
| بيانات النشر: | Multidisciplinary Digital Publishing Institute, 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Hexamethyldisiloxane, Technology, Materials science, QH301-705.5, QC1-999, Oxide, law.invention, Contact angle, chemistry.chemical_compound, symbols.namesake, Adsorption, law, Specific surface area, General Materials Science, Vitamin C, Biology (General), Instrumentation, QD1-999, reduced graphene oxide aerogel, Fluid Flow and Transfer Processes, Graphene, siloxane, Process Chemistry and Technology, Physics, General Engineering, Engineering (General). Civil engineering (General), hexamethyldisiloxane, Computer Science Applications, Chemistry, chemistry, Chemical engineering, adsorption, Siloxane, symbols, TA1-2040, Raman spectroscopy |
| الوصف: | Volatile methyl siloxanes (VMSs) as a trace impurity in biogas decreases its energy utilization, and thus need to be removed. In this paper, a one-step hydrothermal reduction was performed to produce three-dimensional reduced graphene oxide aerogels (rGOAs) using industrial-grade graphene oxide (IGGO) as raw material and vitamin C (VC) as a reductant to facilitate the fabrication of rGOAs. The synthesis of rGOAs was a simple, green, and energy-efficient process. The developed rGOAs were characterized using the Brunauer–Emmett–Teller method, Raman spectrometry, scanning electron microscopy, Fourier-transform infrared spectroscopy, X-ray diffraction measurements and contact angle. The results obtained showed that rGOA-1 with a VC/IGGO ratio of 1/1 (m/m) exhibited a hierarchical porous structure and super-hydrophobicity, yielding a high specific surface area (137.9 m2 g−1) and superior water contact angle (143.8°). The breakthrough adsorption capacity of rGOA-1 for hexamethyldisiloxane (L2, a VMS model) was 11 times higher than that of IGGO. Low inlet concentration and bed temperature were considered beneficial for the L2 adsorption. Interestingly, rGOA-1 was less sensitive to water, and it was readily regenerated for reuse by annealing at 80 °C. The rGOAs have been demonstrated to have great potential for the removal of siloxanes from biogas. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 2076-3417 |
| DOI: | 10.3390/app11188486 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9c16c3afc7bdf6ec34aff0a9df43b68f |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....9c16c3afc7bdf6ec34aff0a9df43b68f |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 20763417 |
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| DOI: | 10.3390/app11188486 |