期刊論文
| 學年 | 97 |
|---|---|
| 學期 | 2 |
| 出版（發表）日期 | 2009-02-01 |
| 作品名稱 | A Self-Templated Route to Hollow Silica Microspheres |
| 作品名稱（其他語言） | |
| 著者 | Zhang, Tierui; Zhang, Qiao; Ge, Jianping; Goebl, James; Sun, Min-wei; Yan, Yushan; Liu, Yi-sheng; 張經霖; Chang, Ching-lin; Guo, Jinghua; Yin, Yadong |
| 單位 | 淡江大學物理學系 |
| 出版者 | American Chemical Society (ACS) |
| 著錄名稱、卷期、頁數 | Journal of Physical Chemistry C 113(8), pp.3168-3175 |
| 摘要 | A simple, mild, and effective self-templated approach has been developed to directly convert solid SiO2 microspheres into hollow structures. The reaction involves initial partial dissolution of silica cores in a NaBH4 solution and subsequent shell formation due to the redeposition of the silicate species back onto the colloid surfaces. The increasing concentration of NaBO2 as the result of the slow decomposition of NaBH4 in water is found to be responsible for the regrowth of the silica shell. This method allows the production of hollow silica spheres with sizes ranging from 70 nanometers to several micrometers, largely determined by the size of the starting silica colloids. The solid-to-hollow transformation mechanism is investigated in detail by transmission electron microscopy (TEM), scanning electron microscopy (SEM), Fourier Transform Infrared (FTIR) spectrometry, X-ray absorption spectroscopy (XAS), N2 adsorption−desorption, and X-ray diffraction (XRD). We also study the reaction conditions that allow control over the wall thickness, surface morphology, and shell porosity. |
| 關鍵字 | |
| 語言 | en |
| ISSN | 1932-7447 |
| 期刊性質 | 國內 |
| 收錄於 | |
| 產學合作 | |
| 通訊作者 | |
| 審稿制度 | 否 |
| 國別 | TWN |
| 公開徵稿 | |
| 出版型式 | ,電子版 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/50349 ) |