Hollow Microsphere with Mesoporous Shell by Pickering Emulsion Polymerization as a Potential Colloidal Collector for Organic Contaminants in Water

详细信息    查看全文

• 作者：Yinyan Guan ; Xiaohui Meng ; Dong Qiu
• 刊名：Langmuir
• 出版年：2014
• 出版时间：April 8, 2014
• 年：2014
• 卷：30
• 期：13
• 页码：3681-3686
• 全文大小：386K
• 年卷期：v.30,no.13(April 8, 2014)
• ISSN：1520-5827

文摘

Submicrometer hollow microspheres with mesoporous shells were prepared by a simple one-pot strategy. Colloidal silica particles were used as a particle stabilizer to emulsify the oil phase, which was composed of a polymerizable silicon monomer (TPM) and an inert organic solvent (PEA). The low interfacial tension between colloidal silica particles and TPM helped to form a Pickering emulsion with small droplet sizes. After the polymerization of TPM, the more hydrophobic PEA formed a liquid core, leading to a hollow structure after its removal by evaporation. BET results indicated that the shell of a hollow particle was mesoporous with a specific surface area over 400 m²路g^鈥?. With PEA as the core and silica as the shell, each resultant hollow particle had a hydrophobic cavity and an amphiphilic surface, thus serving as a good colloidal collector for hydrophobic contaminants in water.