Facile Fabrication of Ultrafine Hollow Silica and Magnetic Hollow Silica Nanoparticles by a Dual-Templating Approach

• Published in: Nanoscale Research Letters
• Main Authors: Xiao Xiangheng, Zhang Shaofeng, Peng Tangchao, Ren Feng, Fan Lixia, Wu Wei, Jiang Changzhong
• Format: Article
• Language: English
• Published: SpringerOpen 2009-01-01
• Subjects: Hollow silica nanoparticles; Fe₃O₄; Dual-templates; Magnetic nanoparticles
• Online Access: http://dx.doi.org/10.1007/s11671-009-9452-1

<p>Abstract</p> <p>The development of synthetic process for hollow silica materials is an issue of considerable topical interest. While a number of chemical routes are available and are extensively used, the diameter of hollow silica often large than 50 nm. Here, we report on a facial route to synthesis ultrafine hollow silica nanoparticles (the diameter of <it>ca</it>. 24 nm) with high surface area by using cetyltrimethylammmonium bromide (CTAB) and sodium bis(2-ethylhexyl) sulfosuccinate (AOT) as co-templates and subsequent annealing treatment. When the hollow magnetite nanoparticles were introduced into the reaction, the ultrafine magnetic hollow silica nanoparticles with the diameter of <it>ca</it>. 32 nm were obtained correspondingly. Transmission electron microscopy studies confirm that the nanoparticles are composed of amorphous silica and that the majority of them are hollow.</p>