Synthesize and Characterization of Mesoporous ZrFe2O4@SiO₂ Core-shell Nanocomposite Modified with APTES and TCPP

IF 1.4 Q4 NANOSCIENCE & NANOTECHNOLOGY

Journal of Nanostructures Pub Date : 2020-04-01 DOI:10.22052/JNS.2020.02.018

R. Rahimi, M. Rabbani, H. Khosravi, A. Maleki

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引用次数: 2

Abstract

The mesoporous ZrFe2O4 nanocauliflowers were synthesized via the solvothermal method. The core-shell ZrFe2O4@SiO2 nanocomposite was successfully prepared by a simple wet route using tetraethylorthosilicate, then modified with (3-aminopropyl)triethoxisilan (APTES) as linker and tetrakis(4-carboxyphenyl)porphyrin (TCPP) as agent for light harvesting, to fabricate ZrFe2O4@SiO2-NH-TCPP nanocomposite. The characterizations of samples were done by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), energy dispersive spectroscopy (EDS), nitrogen adsorption and desorption isotherms (BET), vibrating sample magnetometer (VSM), diffuse reflectance spectroscopy (DRS) and fluorescence spectroscopy. The prepared samples were applied as photocatalyst to remove of methyl orange (MO) under visible LED light irradiation. The obtained results showed that the presence of SiO2 and TCPP decreased the size of particles and improve the photocatalytic activity of samples, too, led to increase of photodegradation of MO. The final fabricated nanocomposite (ZrFe2O4@SiO2-NH-TCPP) could degrade MO about 100% under only 10 W visible LED irradiation and be separated easily by an external magnetic field.

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APTES和TCPP改性介孔ZrFe2O4@SiO₂核壳纳米复合材料的合成与表征

采用溶剂热法制备了ZrFe2O4介孔纳米花椰菜。以四乙基硅酸盐为原料，采用简单湿法制备了核-壳纳米复合材料ZrFe2O4@SiO2，然后以(3-氨基丙基)三乙氧基硅烷(APTES)为连接剂，四(4-羧基苯基)卟啉(TCPP)为光捕获剂进行改性，制备了ZrFe2O4@SiO2-NH-TCPP纳米复合材料。采用傅里叶变换红外光谱(FT-IR)、x射线衍射(XRD)、场发射扫描电镜(FE-SEM)、能量色散光谱(EDS)、氮吸附和脱附等温线(BET)、振动样品磁强计(VSM)、漫反射光谱(DRS)和荧光光谱对样品进行表征。将制备的样品作为光催化剂，在可见光LED照射下去除甲基橙(MO)。结果表明，SiO2和TCPP的存在减小了颗粒的尺寸，提高了样品的光催化活性，从而提高了MO的光降解率。最终制备的纳米复合材料(ZrFe2O4@SiO2-NH-TCPP)在10 W可见光led照射下即可降解100%左右的MO，并且易于被外磁场分离。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Nanostructures NANOSCIENCE & NANOTECHNOLOGY-

CiteScore

2.60

自引率

0.00%

发文量

审稿时长

7 weeks

期刊介绍： Journal of Nanostructures is a medium for global academics to exchange and disseminate their knowledge as well as the latest discoveries and advances in the science and engineering of nanostructured materials. Topics covered in the journal include, but are not limited to the following: Nanosystems for solar cell, energy, catalytic and environmental applications Quantum dots, nanocrystalline materials, nanoparticles, nanocomposites Characterization of nanostructures and size dependent properties Fullerenes, carbon nanotubes and graphene Self-assembly and molecular organization Super hydrophobic surface and material Synthesis of nanostructured materials Nanobiotechnology and nanomedicine Functionalization of nanostructures Nanomagnetics Nanosensors.