a modified tio 2 Coating and method for its preparation
A modification and coating technology, applied in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc., can solve problems such as poor stability and weak bonding, and achieve strong adhesion and thermal stability Sexuality, low cost and economy, and good photocatalytic activity
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
preparation example Construction
[0028] Modified TiO of the present invention 2 The preparation method of catalyst comprises the following steps:
[0029] (1) Preparation of inorganic binder aluminum dihydrogen phosphate: using phosphoric acid-aluminum hydroxide liquid phase reaction method, the main reaction formula is Al(OH) 3 +3H 3 PO 4 →Al(H 2 PO 4 ) 3 +3H 2 O. The specific operation steps are: add the mixture of aluminum hydroxide and water into the reaction kettle, stir and heat to 909100°C, then add stoichiometric phosphoric acid solution (to ensure that the molar ratio of phosphoric acid / aluminum hydroxide is 3.0:1), and react for 1h , to obtain a translucent thick material, put it in a 300°C electric furnace while it is hot, continue to heat and condense for 10h, then hydrate, dry at 120°C, and pulverize to obtain a white powdery product of aluminum dihydrogen phosphate.
[0030] Weigh 30g of aluminum dihydrogen phosphate and dissolve it in 100mL of deionized water, stir and mix well, then tr...
Embodiment 1
[0039] (1) Preparation of inorganic binder aluminum dihydrogen phosphate: adopt phosphoric acid-aluminum hydroxide liquid phase reaction method,
[0040] Add the mixture of aluminum hydroxide and water to the reaction kettle, stir and heat to 909100°C, then add stoichiometric phosphoric acid solution (to ensure that the molar ratio of phosphoric acid / aluminum hydroxide is 3.0:1), and react for 1 hour to obtain translucent Put the thick material into a 300°C electric furnace while it is hot, continue to heat and condense for 10 hours, then hydrate, dry at 120°C, and pulverize to obtain a white powdery product of aluminum dihydrogen phosphate. Weigh 30g of aluminum dihydrogen phosphate and dissolve it in 100mL of deionized water, mix well, transfer to a dry silicon tetrafluoride plastic bottle for storage, and set aside.
[0041] (2) Preparation of noble metal Pt modified titanium dioxide solution: take 1 mL of 193.08 mmol / L chloroplatinic acid solution, 180 mL of absolute ethan...
Embodiment 2
[0045] In order to examine the effect of the addition of Pt on the inorganic binder and noble metal modified TiO 2 The impact of the catalytic activity of the catalyst, control the amount of chloroplatinic acid solution added so that the Pt content is respectively P25-TiO 2 Modified TiO was prepared at 0%, 0.5%, 1.0%, 1.5%, 2.0%, 2.5% of the dosage 2 sol, and prepared TiO by the immersion-pulling method 2 The coating film, except that the Pt content is different, other conditions are all the same as the experimental conditions of Example 1. The experimental results of photocatalytic oxidative decomposition of methylene blue show that: when P25-TiO 2 When the Pt content in the catalyst is 0% and 0.5%, respectively, due to too little Pt content, the modified TiO 2 Compared with the unmodified one, the catalytic activity is almost not improved. When the Pt addition is 0%, the modified TiO 2 The catalytic activity did not decrease, which indicated that the addition of the inor...
PUM
| Property | Measurement | Unit |
|---|---|---|
| particle diameter | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More