Improvement of Mesopore Structure of Resorcinol and Formaldehyde Carbon Cryogels by Acid Solution

K. Kraiwattanawong; P. Kitchaiya; Arthit Neramittagapong; P. Praserthdam; H. Tamon

doi:10.4028/www.scientific.net/AMR.55-57.529

Paper Titles

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Novel Design of a Micro Gyroscope Based Birefringence Measurement for Sensor Applications
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Finite Element Modeling of van der Waals Interaction for Elastic Stability of Multi-Walled Carbon Nanotubes
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Improvement of Mesopore Structure of Resorcinol and Formaldehyde Carbon Cryogels by Acid Solution
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Optimization of Chemical Vapor Deposition Synthesis Conditions for Multiwall Carbon Nanotube by Statistical Analysis of Experiment
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Mechanochemical Treated Multi-Walled Carbon Nanotubes for Incorporation of Metal Ions
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Synthesis of Coil-Like Shape CNTs by Thermal CVD Method
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Attachment of Metal Oxide Nanoparticles on Carbon Nanotubes with Different Oxidation Levels
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 55-57Improvement of Mesopore Structure of Resorcinol...

Improvement of Mesopore Structure of Resorcinol and Formaldehyde Carbon Cryogels by Acid Solution

Abstract:

Resorcinol and formaldehyde (RF) carbon cryogels are prepared by sol-gel polycondensation by using sodium carbonate (C) as a catalyst with water (W) as solvent, immersed in acid solution, hydrochloric acid (HCl), dried by freeze-drying technique and then carbonized under inert atmosphere, respectively. Compared with their carbon precursors, both Vmes and mesopore size distributions of all carbon cryogels can be developed since the pore shrinkage is the crucial role in the change of pore structure of carbon gels. HCl may promote the strength of small pore structure and increase the pore shrinkage of large pore structure. Consequently, the treatment of HCl does not only enhance the partial collapse of large pore structure, the treatment also increases the strength of small pore structure to inhibit the shrinkage of this structure during carbonization as well.