PEG修饰Fe3O4纳米粒子（MNPs）的制备及催化氧化VB1研究

doi:10.19640/j.cnki.jtau.2018.04.009

Journal of Tianjin Agricultural University ›› 2018, Vol. 25 ›› Issue (4): 38-43.doi: 10.19640/j.cnki.jtau.2018.04.009

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Studies on catalytic oxidation of VB₁by PEG modified Fe₃O₄ nanoparticles

LIU Hong, MAO Xiang-shuang, LIU Huan, SHU Yue, HUANG Feng-ying, YANG Lin-yan^{Corresponding Author}

College of Animal Science and Veterinary Medicine, Tianjin Agricultural University, Tianjin 300384, China

Received:2018-06-06 Online:2018-12-20 Published:2019-11-12

Abstract

Abstract: VB₁ plays an important role in the normal life of human body. Relevant literature suggest that VB₁ could be oxidized to sulfur containing fluorescent pigment by some mild oxidant. Sulfur fluorescent dyes could fluoresced under UV irradiation, and the fluorescence intensity is proportional to the concentration of VB₁. In this study, Fe₃O₄, Fe₃O₄@SiO₂ and Fe₃O₄@SiO₂-NH₂ MNPs were prepared. Fe₃O₄@SiO₂-NH₂-PEG-COOH MNPs could be prepared by Fe₃O₄@SiO₂-NH₂ MNPs via PEG modification. Under three different test conditions, VB₁ could be oxidized by Fe₃O₄@SiO₂-NH₂-PEG-COOH MNPs, and the obtained sulfur fluorescent dyes could be detected by fluorescence spectrophotometer. The results showed that VB₁ could be catalyzed by the PEG modified Fe₃O₄MNPs in different H₂O₂concentration, different temperatures and different concentration of nanoparticles and produce fluorescent sulfur pigment, but the effect is not obvious. As for Fe₃O₄, response to temperature and concentration of nanoparticles is big.

Key words: Fe₃O₄, PEG modification, VB₁, catalytic oxidation

CLC Number:

O656.22

LIU Hong, MAO Xiang-shuang, LIU Huan, SHU Yue, HUANG Feng-ying, YANG Lin-yan. Studies on catalytic oxidation of VB₁by PEG modified Fe₃O₄ nanoparticles[J]. Journal of Tianjin Agricultural University, 2018, 25(4): 38-43.

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Studies on catalytic oxidation of VB₁by PEG modified Fe₃O₄ nanoparticles

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Studies on catalytic oxidation of VB₁by PEG modified Fe₃O₄ nanoparticles