Pore Parameters-Dependent Adsorption Behavior of Volatile Organic Compounds on Graphene-Based Material
| Autor: | Myunggoo Kang, Jihye Lee, Dong Heon Lee, In-Keun Shim, Aran Kim, Hyun Jung |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
0211 other engineering and technologies Biomedical Engineering Oxide Bioengineering Graphite oxide 02 engineering and technology 010402 general chemistry 01 natural sciences law.invention chemistry.chemical_compound Adsorption law Specific surface area General Materials Science Porosity chemistry.chemical_classification 021110 strategic defence & security studies Graphene General Chemistry Polymer Condensed Matter Physics 0104 chemical sciences chemistry Chemical engineering Mesoporous material |
| Zdroj: | Journal of Nanoscience and Nanotechnology. 18:6995-7003 |
| ISSN: | 1533-4880 |
| DOI: | 10.1166/jnn.2018.15448 |
| Popis: | Mesoporous graphenes (MPGs) with interpenetrating porous networks are successfully obtained by the pyrolysis of composite gel consisting of graphite oxide (GO) and the amphiphilic triblock copolymer (Pluronic P123) under Ar atmosphere, wherein P123 is used as a soft-template. The as-prepared composite gel is obtained following self-assembly and freeze-drying. The obtained MPGs have high BET specific surface area (531-746 m2 g-1 and ink-bottle like pores with three dimensional interconnected network. Furthermore, the specific surface area and porous parameters such as pore volume, pore size, and pore size distribution of MPGs can be rationally controlled by regulating the initial mass ratio of P123 to GO. With the increase of P123 ratio, the average mesopore size is decreased from ∼16.4 nm to ∼9.5 nm, which is similar to the diameter size of P123 micelles. Also, the adsorption capacities of MPG-20 for 52 indoor air standard components (100 μg mL-1, Supelco) are compared with two different materials, namely commercial porous polymers (2,6-diphenyleneoxide) and reduced graphene oxide (RGO). The result shows that MPG-20 has significantly better adsorption capacity than RGO but also similar or slightly better than commercial porous polymer. The mesoporous structure and surface chemistry of MPGs were the most important factors for the enhancement of the adsorption efficiency for volatile organic compounds. |
| Databáze: | OpenAIRE |
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