Silica-coated magnetic Fe3O4 nanoparticles as efficient nano-adsorbents for the improvement of the vapor-phase adsorption of benzene
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Tarih
2021
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
This study focused on the preparation of silica-coated Fe3O4(Fe3O4@SiO2) for the improvement of the vapor-phaseadsorption of benzene. The Fe3O4@SiO2 was prepared via theco-precipitation method, while its characterization was carriedout using FT-IR, SEM and BET surface area analyses. Theexperimental parameters were evaluated for the vapor-phaseadsorption of benzene using response surface methodology(RSM). The Fe3O4@SiO2 adsorbed 197.50 mg g-1 of the vaporphase benzene under the following optimum conditions: 39.93min residence time, 13.57 mg l-1 initial benzene concentrationand 26.87°C temperature. The vapor-phase adsorptionmechanism of benzene on the Fe3O4@SiO2 was clarified byinvestigating the isotherms including Dubinin-Radushkevich(D-R), Freundlich and Langmuir, and the experimenatal datawere well fitted to the D-R model. The vapor-phase adsorptionkinetics of benzene on the Fe3O4@SiO2 was clarified byinvestigating the kinetics such as pseudo first-order (PFO)model and pseudo second-order (PSO) model, and theexperimantal results obeyed the PSO model. This studydemonstrated the application potential of magneticFe3O4@SiO2 as promising low-cost nano-adsorbent.
Açıklama
Anahtar Kelimeler
Response surface methodology, vapor-phase adsorption of benzene
Kaynak
International Journal of Chemistry and Technology (IJCT)
WoS Q Değeri
Scopus Q Değeri
Cilt
5
Sayı
1
