stober方法是一種合成單分散二氧化矽顆粒的物理化學方法，由Werner Stöber等人最先發現。
基本介紹
- 中文名：stober法
- 外文名：Stober method
- 定義：合成單分散矽顆粒的物理化學方法
- 發現：Werner Stöber
- 方法：將TEOS加入乙醇
- 時間：1968
stober方法是一種合成單分散矽顆粒的物理化學方法，由Werner Stöber等人最先發現。一般是指通過將TEOS加入乙醇和氨水中生成納米二氧化矽顆粒的方法。
將23.5 mL二次蒸餾水，63.3 mL異丙醇，13 mL氨水(25-28%)混合併35°C油浴。然後滴加0.6 mL 99% TEOS，劇烈攪拌反應30分鐘，得到二氧化矽球種子溶液。然後，再滴加5 mL TEOS，繼續反應2小時。最後離心乾燥即可（Briefly, SiO2 nanospheres were synthesized by a modified Stöbermethod. In a typical reaction, 23.5 ml of water, 63.3 ml of 2-propanol,and 13 ml of ammonia (25 to 28%) were mixed and heated in an oilbath to 35°C. Then, 0.6 ml of TEOS (99%) was added dropwise to thissolution, and the reaction was continued for 30 min under vigorousstirring to form the silica seeds. Then, 5 ml of TEOS was addeddropwise to the reaction system. The reaction mixture was kept for2 hours at 35°C. The SiO2 nanospheres were isolated by centrifugation,washed with ethanol and water repeatedly, and finally dried in air）
