化工新型材料

化工新型材料 ›› 2018, Vol. 46 ›› Issue (9) : 121-124.

新材料与新技术

磁性荧光双功能纳米材料Fe₃O₄/CS@CQDs的制备与表征

^1,2

作者信息 +

Preparation and characterization of Fe₃O₄/CS@CQDs bifuntional magnetic fluorescent composite

Dong Shuling¹, Weng Ting¹, Wang Xiuling¹, Wang Hongxia¹, Liu Yongjian^1,2

Author information +

文章历史 +

Received
2017-04-19
Issue Date	Revised Date
2018-11-05	2017-04-19

PDF (2075K)

摘要

以化学共沉淀法制备出Fe₃O₄磁性纳米粒子,通过壳聚糖(CS)修饰制备得Fe₃O₄/CS磁性微球,再将Fe₃O₄/CS磁性微球与表面富含羧基的碳量子点(CQDs)连接,合成了以碳量子点为荧光材料的磁性荧光双功能纳米微球Fe₃O₄/CS@CQDs。经过红外光谱仪(FT-IR)、X射线衍射仪(XRD)、荧光分光光度计、振动样品磁强计(VSM)、荧光显微镜及透射电子显微镜(TEM)对该纳米材料表征。结果表明:双功能纳米微球Fe₃O₄/CS@CQDs饱和磁化强度达到13.66emu/g,分散性良好,粒径约为45nm,具有良好的荧光性能及磁响应性,有望取代以半导体量子点作为荧光材料的磁性复合材料,在生物医学等方面得到广泛应用。

Abstract

Magnetic nanoparticles Fe₃O₄ were prepared by hydrothermal coprecipitation,which were modified by chitosan (CS) and then formed magnetic microspheres of Fe₃O₄/CS.At last,the carboxyl-rich carbon quantum dots as fluorescent materials were connected to as-prepared nanoparticles,and then Fe₃O₄/CS@CQDs bifunctional magnetic/luminescent nanocomposites were obtained successfully.By fourier transform infrared spectroscopy (FT-IR),X-ray diffraction (XRD),fluorescence spectrophotometer,vibrating sample magnetometer (VSM),fluorescence microscope and transmission electron microscopy (TEM) for the characterization of nano materials,the results showed that the saturation magnetic intensity of nanocomposites was 13.66emu/g,with good dispersibility and particle diameter of 45nm.This kind of nanocomposites had good fluorescence properties and magnetic response,and was expected to replace the magnetic nanocomposite of semiconductor quantum dots,which can be widely used in biomedicine and so on.

关键词

碳量子点 / Fe₃O₄磁性纳米粒子 / 壳聚糖 / 双功能纳米微球

Key words

carbon quantum dots / Fe₃O₄ magnetic nanoparticle / chitosan / bifunctional nanocomposite

引用本文

引用格式 ▾

磁性荧光双功能纳米材料Fe₃O₄/CS@CQDs的制备与表征[J]. 化工新型材料, 2018, 46(9): 121-124 DOI:

登录浏览全文

4963

注册一个新账户忘记密码

参考文献

原文顺序 | 出版日期 | 本文引用

[1]Kim J,Kim H S,Lee N,et al.Multifunctional uniform nanoparticles composed of a magnetite nanocrystal core and a mesoporous silica shell for magnetic resonance and fluorescence imaging and for drug delivery[J].Angew Chem Int Ed Engl,2008,47(44):8438-8441.
[2]黄孟琼,王秀玲,刘勇健,等.双功能荧光磁性复合物的合成及应用[J].应用化工,2010,39(4):595-599.
[3]Paulino A T,Belfiore L A,Kubota L T,et al.Effect of magnetite on the adsorption behaveior of Pb(Ⅱ),Cd(Ⅱ),and Cu(Ⅱ) in chitosan-based hydrogels[J].Desalination,2011,275(1-3):187-196.
[4]Pospiskova K,Safarik I.Low-cost,easy-to-prepare magnetic chitosan microparticles for enzymes immobilization[J].Carbohydrate Polymers,2013,96(2):545-548.
[5]Podzus P E,Daraio M E,Jacobo S E.Chitosan magnetic microspheres for technological applications:preparation and characterization[J].Physica B:Condensed Matter,2009,404(18):2710-2712.
[6]顾银君,王秀玲,赵勤,等.荧光磁性双功能树状分子微球的制备与表征[J].高等学校化学学报,2012,33(5):885-891.
[7]甫亚锋,王秀玲,刘勇健,等.新型磁性荧光双功能纳米复合物的制备与表征[J].现代化工,2016,36(7):109-113.
[8]Wang X L,Wei L,Tao G H,et al.Synthesis and characterization of magnetic and luminescent Fe₃O₄/CdTe nanocomposites using aspartic acid as linker[J].Chin Chem Lett,2011,22(2):233-236.
[9]Wang X L,Gu Y J,Dong S L,et al.Preparation and characterization of bifunctional dendrimer modified Fe₃O₄/CdTe nanoparticles with both luminescent and superparamagnetic properties[J].Materials Research Bulletin,2015,70:122-128.
[10]颜范勇,邹宇,王蒙,等.荧光碳点的制备与应用[J].化学进展,2014,2(1):61-74.
[11]翁婷,王胜男,王秀玲,等.碳量子点磁性纳米复合材料的制备与表征[J].化工新型材料,2018,46(2):222-225.
[12]Wang Y H,Yu C M,Gu H Y,et al.The hemoglobin-modified electrode with chitosan/Fe₃O₄ nanocomposite for the detection of trichloroacetic acid[J].Journal of Solid State Electrochemistry,2016,20(5):1337-1344.
[13]Li F,Liu C,Yang J,et al.Mg/N double doping strategy to fabricate extremely high luminescent carbon dots for bioimaging[J].Rsc Advances,2014,4(7):3201-3205.
[14]尤晓刚,贺蓉,高峰,等.核/壳型CdTe/SiO₂荧光纳米复合粒子的制备与表征[J].化学学报,2007,65(6):561-565.