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Ghobashy MM, Bassioni G, Zaher A, El-Wahab HA, Nady N, El-Sayed A, Osman A, Ahmed Abd El-Sattar NED. Radiation Synthesis of Carbon/Aluminum/Silica Aerogel Nanoporous Structure Derived from Polyacrylamide Hydrogel for High Temperature and Oil Removal Applications. ACS OMEGA 2023; 8:20283-20292. [PMID: 37323399 PMCID: PMC10268019 DOI: 10.1021/acsomega.2c07335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Accepted: 01/26/2023] [Indexed: 06/17/2023]
Abstract
Aerogel is a high-performance thermal resistance material desired for high-temperature applications like dye-sensitized solar cells, batteries, and fuel cells. To increase the energy efficiency of batteries, an aerogel is required to reduce the energy loss arising from the exothermal reaction. This paper synthesized a different composition of inorganic-organic hybrid material by growing the silica aerogel inside a polyacrylamide (PAAm) hydrogel. The hybrid PaaS/silica aerogel was synthesized using different irradiation doses of gamma rays (10-60 kGy) and different solid contents of PAAm (6.25, 9.37, 12.5, and 30 wt %). Here, PAAm is used as an aerogel formation template and carbon precursor after the carbonization process at a temperature of (150, 350, and 1100 °C). The hybrid PAAm/silica aerogel was converted into aluminum/silicate aerogels after soaking in a solution of AlCl3. Then, the carbonization process takes place at a temperature of (150, 350, and 1100 °C) for 2 h to provide C/Al/Si aerogels with a density of around 0.18-0.040 gm/cm3 and porosity of 84-95%. The hybrid C/Al/Si aerogels presented interconnected networks of porous structures with different pore sizes depending on the carbon and PAAm contents. The sample with a solid content of 30% PAAm in the C/Al/Si aerogel was composed of interconnected fibrils whose diameter was about 50 μm. The structure after carbonization at 350 and 1100 °C was a condensed opening porous 3D network structure. This sample gives the optimum thermal resistance and a very low thermal conductivity of 0.073 (w/m·k) at low carbon content (2.71% at temperature 1100 °C) and high vpore (95%) compared with carbon content 42.38% and vpore (93%) which give 0.102 (w/m·k). This is because at 1100 °C, the carbon atoms evolve to leave an area between Al/Si aerogel particles, increasing the pore size. Furthermore, the Al/Si aerogel had excellent removal ability for various oil samples.
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Affiliation(s)
- Mohamed Mohamady Ghobashy
- Radiation
Research of Polymer Chemistry Department, National Center for Radiation
Research and Technology (NCRRT), Egyptian
Atomic Energy Authority (EAEA), P.O.
Box 8029, Cairo 4441501, Egypt
| | - Ghada Bassioni
- Faculty
of Engineering, Ain Shams University, Cairo 11517, Egypt
| | - Ahmed Zaher
- Chemistry
Department, Faculty of Science, El-Mansoura
University, El-Mansoura 35516, Egypt
| | - H. Abd El-Wahab
- Department
of Chemistry Faculty of Science, Al-Azher
University, P.O. Box 11754, Nasr City, Cairo 387130, Egypt
| | - Norhan Nady
- Polymeric
Materials Research Department, City of Scientific
Research and Technological Applications (SRTA-City), Borg El-Arab City, Alexandria 21934, Egypt
| | - Amira El-Sayed
- Department
of Chemistry, Faculty of Science, Ain Shams
University, Cairo 11517, Egypt
| | - Amr Osman
- Department
of Chemistry, Faculty of Science, Ain Shams
University, Cairo 11517, Egypt
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Influence of supercritical fluid parameters on the polyimide aerogels in a high-efficiency supercritical drying process. POLYMER 2023. [DOI: 10.1016/j.polymer.2023.125713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Solvent-resistant polyimide aerogel film as ultrapermeable support for thin-film composite and covalent organic framework nanofiltration membranes. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Nie Y, Yi X, Zhao X, Yu S, Zhang J, Liu X, Liu S, Yuan Z, Zhang M. Directional porous polyimide/polyethylene glycol composite aerogel with enhanced CO 2 uptake performance. HIGH PERFORM POLYM 2022. [DOI: 10.1177/09540083221136051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The cost of CO2 separation and energy consumption can be decreased through the use of CO2 adsorption. Due to the electron-rich heteroatoms in its network, polyimide (PI) has a remarkable affinity for CO2. Polyethylene glycol (PEG) can increase the layer spacing of polymers, so as to change the mass transfer of CO2 in it. Furthermore, the ether bond (-O-) in PEG has good affinity for CO2. In this study, PEG-1000 was introduced into PI aerogel by mild sol-gel method at low temperature, and freeze-drying was used to produce PI/PEG composite aerogels with directional pore structure. The effect of PEG-1000 content and directional pore structure of the PI/PEG composite aerogels on CO2 adsorption performance were further studied. The L-PI/PEG-4 composite aerogel, which contains 4 g PEG and is directionally frozen in liquid nitrogen, has a CO2 adsorption capacity of 16.76 cm3/g at 25°C and 1 bar. L-PI/PEG-4 aerogel also exhibits high CO2/N2 selectivity and adsorption cycle stability.
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Affiliation(s)
- Yihao Nie
- Shandong Provincial Key Laboratory of Special Silicone-Containing Materials, Advanced Materials Institute, QiLu University of Technology (Shandong Academy of Sciences), Jinan, P. R. China
| | - Xibin Yi
- Shandong Provincial Key Laboratory of Special Silicone-Containing Materials, Advanced Materials Institute, QiLu University of Technology (Shandong Academy of Sciences), Jinan, P. R. China
| | - Xinfu Zhao
- Shandong Provincial Key Laboratory of Special Silicone-Containing Materials, Advanced Materials Institute, QiLu University of Technology (Shandong Academy of Sciences), Jinan, P. R. China
| | - Shimo Yu
- Shandong Provincial Key Laboratory of Special Silicone-Containing Materials, Advanced Materials Institute, QiLu University of Technology (Shandong Academy of Sciences), Jinan, P. R. China
| | - Jing Zhang
- Shandong Provincial Key Laboratory of Special Silicone-Containing Materials, Advanced Materials Institute, QiLu University of Technology (Shandong Academy of Sciences), Jinan, P. R. China
| | - Xiaochan Liu
- Shandong Provincial Key Laboratory of Special Silicone-Containing Materials, Advanced Materials Institute, QiLu University of Technology (Shandong Academy of Sciences), Jinan, P. R. China
| | - Sijia Liu
- Shandong Provincial Key Laboratory of Special Silicone-Containing Materials, Advanced Materials Institute, QiLu University of Technology (Shandong Academy of Sciences), Jinan, P. R. China
| | - Zhipeng Yuan
- Shandong Provincial Key Laboratory of Special Silicone-Containing Materials, Advanced Materials Institute, QiLu University of Technology (Shandong Academy of Sciences), Jinan, P. R. China
| | - Minna Zhang
- Shandong Provincial Key Laboratory of Special Silicone-Containing Materials, Advanced Materials Institute, QiLu University of Technology (Shandong Academy of Sciences), Jinan, P. R. China
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