Process for the preparation of titanium dioxide with nanometric dimensions and controlled shape
一种纳米、尺寸的技术，应用在染料敏化太阳能电池领域，能够解决没有提供二氧化钛、不适于生产锐钛矿相纳米棒、不能类似地分离等问题，达到降低生产费用、易于实现工业化规模的效果
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Examples
Embodiment 1
[0081] Benzyl alcohol (403 g; 3.88 moles), acetic acid (90 g; 1.51 moles) and titanium tetraisopropoxide (106.7 g; 0.375 moles) were mixed by mechanical stirring in a 1000 ml flask equipped with a bubble condenser at room temperature. The mixture was heated to a reflux temperature of around 110°C. After 5 hours, the solution became cloudy and tended to gradually thicken. The stirring speed was increased and the mixture was kept at reflux for about 24 hours. The suspension turned into a liquid, which showed an intense white color. The mixture was transferred to a flask and concentrated in vacuo (0.5 mmHg) at about 70°C until a sticky paste formed. The residue obtained was washed with ethanol followed by diisopropyl ether, then filtered and dried at low pressure to give TiO 2 (26.5 g), characterized by XRPD (Figure Ia) and TEM (Figure Ib).
Embodiment 2
[0083] Following the same procedure as Example 1, but using benzoic acid (184 g, 1.15 moles) instead of acetic acid, TiO 2 (26.5 g), characterized by XRPD (Figure 2a) and TEM (Figure 2b).
Embodiment 3
[0085] Using the same procedure as Example 1, but using oleic acid (76.26 g, 0.27 moles) instead of acetic acid, TiO 2 (26.5 g), characterized by XRPD (Figure 3a) and TEM (Figure 3b).
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Abstract
Description
Claims
Application Information
- IPC
- C01G23/053; B01J21/06; B82B3/00; H01L31/04
- CPC
- Y02E10/52; C01G23/047; C01P2004/64; B82Y30/00; C01G23/053; C01P2004/54; C25B1/003; C01P2004/16
- Inventors
- 朱塞佩·西卡尔利; 罗伯托·钦戈拉尼