Study on structural, morphology, optical and photocatalytic activity of a novel mesoporous ZrFe2O4@SiO2 core-shell nanocomposite modified with APTES and TCPP

سال انتشار: 1398
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 382

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شناسه ملی سند علمی:

IICC21_064

تاریخ نمایه سازی: 5 آذر 1398

چکیده مقاله:

In this study, the mesoporous ZrFe2O4 with nanocauliflowers structure was first synthesized via solvothermal method [1,2]. Then the core-shell composite of ZrFe2O4@SiO2 was successfully prepared by a simple wet route using tetraethyl orthosilicate (TEOS) as precursor of silica [3]. Furthermore, the core-shells were modified with tetrakis (4-carboxyphenyl) porphyrin (TCPP) for improving the photocatalytic activity [4] and 3-aminopropyltriethoxysilane (APTES) was used as the linker which TCPP could be easily grafted to it [5]. The samples characterizations were defrofrep by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), energy dispersive spectroscopy (EDS), nitrogen adsorption and desorption isotherms (BET), vibrating sample magnetometer (VSM), diffuse reflectance spectroscopy (DRS).The photocatalytic activity of ZrFe2O4@SiO2-NH2-TCPP on the degradation of methyl orange (MO) was shown the excellent catalytic activity in comparison of nanocomposite without linker. The higher surface area is beneficial to raise the number of active sites for degrade methyl orange

نویسندگان

Hamideh Balooch Khosravi

Department of Chemistry, Iran University of Science and Technology, Tehran, Iran

Rahmatollah Rahimi

Department of Chemistry, Iran University of Science and Technology, Tehran, Iran

Mahboubeh Rabbani

Department of Chemistry, Iran University of Science and Technology, Tehran, Iran