N2 adsorption curve of mesoporous SiO2: A neglected characterization technique |
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| Authors: | Xingtao Jia Wen He Xudong Zhang |
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| Affiliation: | a Department of Materials Science and Engineering, Shandong Institute of Light Industry, Jinan, 250353, China
b College of Chemistry and Chemical Engineering, China University of Petroleum, Dongying, 257061, China |
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| Abstract: | Mesoporous SiO2 sieve and SiO2 nanoparticles were synthesized by a traditional method in the presence and absence of tri-block copolymer surfactant P123 as structure directed agent respectively. The characterization results show that the mesoporous SiO2 sieve has larger specific area (789 m2/g) than SiO2 nanoparticles (373 m2/g), and there exists a substantial difference in the N2 adsorption curves between the two samples. A speculative scheme shows that the formation of bottleneck during the N2 adsorption process of mesoporous SiO2 sieve should be responsible for the phenomenon. |
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| Keywords: | Mesoporous SiO2 Nanomaterials Characterization methods N2 adsorption curve |
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