Abstract
Studies on synthesis of hollow particles have received considerable attention because these particles can be used for wide range applications. However, current methods have problems in the agglomeration phenomena and must be proceeded in the multi-step, complicated, and time-consuming procedures. Therefore, purpose of this study is to show a new method to produce agglomeration-free hollow silica particles with spherical shape and controllable diameter (from 90 to 200nm). Different from other reports that typically used a liquid-phase synthesis method, we used an electrospray deposition followed by template removal process. Polystyrene and silica were used as models of template and host material, respectively. The prepared particles were characterized using a fourier transform infra red and a scanning and a transmission electron microscopes. Experimental results showed that size and agglomeration condition of hollow particles were controllable only by changing core diameter, electrospray flow rate, and precursor concentration. The successful and unsuccessful condition was also described.
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