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

doi:10.7503/cjcu20180832

Chem. J. Chinese Universities ›› 2019, Vol. 40 ›› Issue (8): 1586.doi: 10.7503/cjcu20180832

• Articles: Inorganic Chemistry • Previous Articles Next Articles

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

WANG Xiaohui, WANG Kexin, LIU Junping, HONG Xia

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).

Abstract

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

CLC Number:

O611.3

TrendMD:

WANG Xiaohui, WANG Kexin, LIU Junping, HONG Xia. Mesoporous-structure Enhanced Photothermal Effect of Fe₃O₄ Superparticles@mesoporous Silica[J]. Chem. J. Chinese Universities, 2019, 40(8): 1586.

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

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