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Zhu X, Hope-Weeks LJ, Yu Y, Yuan J, Zhang X, Yu H, Liu J, Li X, Zeng X. Effect of concentration of glycidol on the properties of resorcinol-formaldehyde aerogels and carbon aerogels. RSC Adv 2022; 12:20191-20198. [PMID: 35919604 PMCID: PMC9277623 DOI: 10.1039/d2ra03270h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 07/06/2022] [Indexed: 12/03/2022] Open
Abstract
By using glycidol as a catalyst, high porosity, low-density resorcinol (R) and formaldehyde (F) aerogels and carbon aerogels (CAs) were synthesized via a sol-gel method. The effect of glycidol and water on the color, density, morphology, textual characteristics and adsorption properties of the resultant RF aerogels and CAs were investigated in detail. The results revealed that the properties of RF aerogels and CAs can be controlled by adjusting the amount of glycidol and water. The resultant RF aerogels and CAs were porous materials, the minimum densities of RF aerogels and CAs were 96 and 110 mg cm−3 respectively while the maximum specific surface areas of RF aerogels and CAs were 290 and 597 m2 g−1. The maximum adsorption capacity of CAs was about 125 mg g−1 on Rhodamine B, which was higher than that of some reported CAs catalyzed by base and acid catalysts. The sol-gel mechanisms of RF aerogels and CAs can be attributed to the opening of the epoxy group of glycidol in the mixture of R and F. The sol-gel mechanism of glycidol-catalyzed RF aerogels is the opening of the epoxy ring rather than the preservation the of epoxy ring.![]()
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Affiliation(s)
- Xiurong Zhu
- School of Physics and Electronic Information, Gannan Normal University, Ganzhou, Jiangxi, 341000, China
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas, 79409, USA
- Shanghai Key Laboratory of Special Artificial Microstructure Materials & Technology, Department of Physics, Tongji University, Shanghai 200092, China
| | - Lousia J. Hope-Weeks
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas, 79409, USA
| | - Yi Yu
- School of Physics and Electronic Information, Gannan Normal University, Ganzhou, Jiangxi, 341000, China
| | - Jvjun Yuan
- School of Physics and Electronic Information, Gannan Normal University, Ganzhou, Jiangxi, 341000, China
| | - Xianke Zhang
- School of Physics and Electronic Information, Gannan Normal University, Ganzhou, Jiangxi, 341000, China
| | - Huajun Yu
- School of Physics and Electronic Information, Gannan Normal University, Ganzhou, Jiangxi, 341000, China
| | - Jiajun Liu
- School of Physics and Electronic Information, Gannan Normal University, Ganzhou, Jiangxi, 341000, China
| | - Xiaofen Li
- School of Physics and Electronic Information, Gannan Normal University, Ganzhou, Jiangxi, 341000, China
| | - Xianghua Zeng
- School of Physics and Electronic Information, Gannan Normal University, Ganzhou, Jiangxi, 341000, China
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