Method for detecting optical self-cleaning material photocatalysis performance by fluorophotometry
A technology for photocatalysis and detection of light, which is applied in the directions of fluorescence/phosphorescence, material excitation analysis, preparation of test samples, etc. It can solve the problems of long time consumption and low sensitivity, and achieve the effect of high sensitivity and good accuracy
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example
[0024] Example 1: Cut 4 kinds of commercial light self-cleaning glass: A, B, C, D into 4×3cm 2 of small pieces. Take 2 pieces of each light self-cleaning glass (24cm 2 ) were placed flat in a petri dish (simple reactor) with a diameter of 9cm, the reactor was placed directly under a 9W ultraviolet lamp (λmax=254nm) (distance 20cm), and 20mL of coumarin (1.0×10 -3 mol / L, pH=3), turn on the light source, and photocatalyze the oxidation of coumarin. Take out 2 mL of the solution every 10 min and use a fluorescence spectrophotometer to detect the fluorescence intensity of the solution at an excitation wavelength of 346 nm and a fluorescence wavelength of 456 nm (slit width: Ex, Em: 5 nm; sensitivity: high). Repeat 4 times. The fluorescence intensities measured by these 4 kinds of optical glass under the above-mentioned conditions are plotted to its illumination time respectively, see accompanying drawing 2, all are straight lines; The order of photocatalytic activity of these ...
Example
[0025] Example 2: Cut 4 kinds of commercial light self-cleaning glass: A, B, C, D into 4×3cm 2 of small pieces. Take 2 pieces of each light self-cleaning glass (24cm 2 ) were placed flat in a petri dish (simple reactor) with a diameter of 9 cm, the reactor was placed directly under a 9W UV lamp (λmax=254 nm) (distance 15 cm), and 30 mL of Rhodamine B (5.0×10 -4mol / L, pH=6), turn on the light source, and photocatalytically degrade Rhodamine B. Take out 2 mL of the solution every 10 min and use a fluorescence spectrophotometer to detect the fluorescence intensity of the solution at an excitation wavelength of 550 nm and a fluorescence wavelength of 573 nm (slit width: Ex, Em: 5 nm; sensitivity: high). Repeat 4 times. The fluorescence intensities of the four kinds of optical self-cleaning glasses measured under the above conditions are plotted against their illumination time respectively, and they are all straight lines; but the slopes K of these straight lines are different. ...
Example
[0026] Example 3: Cut 3 kinds of commercial light self-cleaning ceramics: E, F, G into 3×3cm 2 of small pieces. Take 4 pieces of each (36cm 2 ) were placed flat in a petri dish (simple reactor) with a diameter of 9cm, the reactor was placed directly under a 9W ultraviolet lamp (λmax=254nm) (distance 15cm), and 50mL of 8-hydroxyquinoline aluminum (2.0× 10 -4 mol / L, pH=4), turn on the light source, and photocatalytically degrade 8-hydroxyquinoline aluminum. Take out 2 mL of the solution every 10 min and use a fluorescence spectrophotometer to detect the fluorescence intensity of the solution at an excitation wavelength of 360 nm and a fluorescence wavelength of 500 nm (slit width: Ex, Em: 10 nm; sensitivity: mid). Repeat 4 times. The fluorescence intensities of the three kinds of self-cleaning ceramics measured under the above conditions are plotted against the illumination time, all of which are straight lines, and the slopes of these straight lines are different. The orde...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap