Synthesis of bimodal mesoporous carbon nanospheres for methyl orange adsorption
| Autor: | Kechan Xia, Aibing Chen, Lei Liu, Guoxu Wang, Hongliang Zhang, Yifeng Yu, Lingli Wang |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Mechanical Engineering Langmuir adsorption model chemistry.chemical_element 02 engineering and technology Mesoporous silica 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences symbols.namesake Mesoporous organosilica chemistry.chemical_compound Adsorption Chemical engineering chemistry Mechanics of Materials Specific surface area symbols Methyl orange Organic chemistry General Materials Science 0210 nano-technology Mesoporous material Carbon |
| Zdroj: | Journal of Porous Materials. 24:1605-1612 |
| ISSN: | 1573-4854 1380-2224 |
| DOI: | 10.1007/s10934-017-0400-7 |
| Popis: | Mesoporous materials with bimodal mesopores show advantages in adsorption, energy storage, and catalysis because such unique structures are beneficial to the mass transfer. Here, we describe the synthesis of bimodal mesoporous carbon nanospheres (BMCSs) by using phenolic resin as carbon precursor, triblock copolymer Pluronic F127 as the soft template, and mesoporous silica spheres as hard templates. The BMCSs with uniform spherical morphology, high specific surface area (1489 m2 g− 1), large pore volume (0.92 cm3 g− 1), and bimodal mesoporous structure (3.8 and 6.8 nm) exhibit promising properties for adsorption of methyl orange (MO). The maximum adsorption capacity of the BMCSs is 5.5 × 102 ± 0.2 × 102 mg g− 1, which is higher than that of many adsorbents reported. The kinetics studies show a better fit of pseudo-second-order model. Meanwhile, fitting equilibrium data show that the Langmuir model is more suitable to describe the MO adsorption than Freundlich model. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink