Study on structural, morphology, optical and photocatalytic activity of a novel mesoporous ZrFe2O4@SiO2 core-shell nanocomposite modified with APTES and TCPP
محل انتشار: بیست و یکمین سمینار شیمی معدنی انجمن شیمی ایران
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