高等学校化学学报 ›› 2019, Vol. 40 ›› Issue (8): 1586-1592.doi: 10.7503/cjcu20180832

• 研究论文:无机化学 • 上一篇    下一篇

介孔结构增强的Fe3O4超粒子@介孔SiO2的光热性能

王晓慧, 王可心, 刘俊平, 洪霞   

  1. 东北师范大学物理学院, 紫外光发射材料与技术教育部重点实验室, 长春 130024
  • 收稿日期:2018-12-12 修回日期:2019-07-23 出版日期:2019-08-10 发布日期:2019-07-12
  • 通讯作者: 洪霞,女,博士,副教授,主要从事纳米生物医用材料研究.E-mail:xiahong@nenu.edu.cn E-mail:xiahong@nenu.edu.cn
  • 基金资助:
    国家自然科学基金(批准号:51272040,11604043)、吉林省教育厅"十三五"科技研究项目(批准号:JJKH20170910KJ)和东北师范大学紫外光发射材料与技术教育部重点实验室开放课题(批准号:130028853)资助.

Mesoporous-structure Enhanced Photothermal Effect of Fe3O4 Superparticles@mesoporous Silica

WANG Xiaohui, WANG Kexin, LIU Junping, HONG Xia   

  1. Key Laboratory of UV-Emitting Materials and Technology, Ministry of Education, School of Physics, Northeast Normal University, Changchun 130024, China
  • Received:2018-12-12 Revised:2019-07-23 Online:2019-08-10 Published:2019-07-12
  • Supported by:
    Supported by the National Natural Science Foundation of China(Nos.51272040, 11604043), the Thirteenth Five-Year Science and Tech-nology Research Project of Education Department of Jilin Province, China(No.JJKH20170910KJ) and the Open Project of of Key Laboratory UV-Emitting Materials and Technology of Northeast Normal University, China(No.130028853).

摘要: 采用湿化学法制备了多功能Fe3O4超粒子@介孔SiO2复合材料.该纳米复合材料具有超顺磁性,在商用磁铁下可实现快速富集、分离.SiO2的包覆增强了Fe3O4超粒子在近红外光区的吸收,提高了其光热性能;介孔结构的构建提高了近红外光的利用率,进一步提升了纳米复合物的光热性能,且介孔SiO2的壳层越厚,光热性能越优.细胞实验结果表明,Fe3O4超粒子@介孔SiO2在近红外光照射下具有较高的癌细胞杀伤能力.

关键词: 四氧化三铁超粒子, 介孔二氧化硅, 超顺磁性, 光热性能

Abstract: Fe3O4 superparticles@mesoporous SiO2(Fe3O4SPs@mSiO2) were synthesized by the wet chemical method. The nanocomposites exhibited superparamagnetic property. They can rapidly accumulate near a commercial permanent magnet and redisperse in the aqueous solution with gently shaking. The absorption of Fe3O4SPs@mSiO2 in the near-infrared region was increased due to the coating of SiO2. And thus, their photothermal effect was improved. The construction of mesoporous structure facilitated to raise the utilization of near-infrared light, resulting in a further improvement of the photothermal performance of the nanocomposites. Moreover, the thicker the shell of the mesoporous SiO2 was, the superior the photothermal effect of the nanocomposites became. The vitro cell experiments confirmed that Fe3O4SPs@mSiO2 can effectively kill the cancer cells under the near infrared light irradiation.

Key words: Fe3O4 superparticles, Mesoporous SiO2, Superparamagnetism, Photothermal effect

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