Mn3O4/p(DCPD)HIPE nanocomposites as an efficient catalyst for oxidative degradation of phenol
Yükleniyor...
Dosyalar
Tarih
2020
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
SPRINGER
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The increase in the amount of wastewater containing organic pollutants in various industrial processes creates serious problems for the environment. Sulfate radical-based advanced oxidation process (AOP) is an effective route to remove pollutants from wastewater. However, designing a new nano-based catalyst to generate sulfate radicals is an important factor for the AOP. For this vision, porous trimanganese tetraoxide-polydicyclopentadiene (Mn3O4/pDCPD) nanocomposite, having an open-cell structure, was successfully designed via high internal phase emulsion (HIPE) and ring-opening metathesis polymerization (ROMP) approaches. The effect of Mn(3)O(4)nanoparticle concentration on the structure was investigated, and the resulting Mn3O4/p(DCPD)HIPE nanocomposites were fully characterized by FT-IR, XRD, FE-SEM, TEM, solid-state(13)C CPMAS NMR, DSC, and TGA analysis. The selected nanocomposite containing 5 wt% of Mn(3)O(4)was used as a model catalyst to mediate the heterogeneous oxidation of phenol in the presence of oxone. It is concluded that Mn3O4/p(DCPD)HIPE nanocomposite is a highly active catalyst to generate sulfate radicals for phenol degradation. Complete removal of 25 mg/L phenol was achieved in 30 min under the conditions of [catalyst] = 0.8 g/L, [oxone] = 2 g/L, andT = 25 degrees C. The phenol degradation followed the pseudo-first-order kinetic model, and the highest kinetic constant of 0.0611 min(-1)was achieved. No significant loss in the activity of the catalyst was determined after four consecutive cycles. Graphical abstract
Açıklama
Anahtar Kelimeler
PolyHIPE, Nanocomposite, Mn3O4, Nanoparticle, Porous polymer, Phenol
Kaynak
JOURNAL OF NANOPARTICLE RESEARCH
WoS Q Değeri
Q3
Scopus Q Değeri
Q2
Cilt
22
Sayı
7
Künye
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