New SERS based sensors for detection of water chemical pollutant
 


Objectives and activities

1. Obtaining highly porous type A composites
1a.  The preparation of the type A composites by:
- impregnation of TiO2 gels with various concentrations of colloidal suspensions of Au nanoparticles of a certain dimension (this activity has an iterative character for different dimensions of the Au colloidal nanoparticles)
- supercritical drying with liquid CO2 of the impregnated TiO2 gels
1b. Thermogravimetric analyses (DTG) of the synthesized composites
1c. Heat-treatment of the type A composites at temperatures as determined from DTG to remove the organic residues

2. Testing the sensor capacity of the type A composites to detect by SERS and SERRS chemical pollutants from water
2a. Evaluating the type A composites capacity to detect by SERS organic pollutants from water
2b. Evaluating the type A composites capacity to detect by SERRS organic pollutants from water
2c. Identifying the porous composites with the greatest SERS and SERRS-sensor capacity for a specific water pollutant type

3. Analyzing the structure and morphology of the highly porous type A composites
3a. Morphological investigations of the type A composites with the greatest SERS and SERRS-sensor capacity for a specific water pollutant type (previously identified) by UV-Vis, SEM, TEM and measurements of pores volume distribution and their specific area (BET and Langmuir)
3b. Structural investigations (Raman and IR spectroscopy, XRD measurements, etc.) of the type A composites previously identified
3c. Correlation of the results derived from the morpho-structural analysis with the sensor capacity of the composites to detect by SERS and SERRS chemical pollutants from water

4. Obtaining highly porous type B composites
4a. The preparation of the type B composites by:
- impregnation of TiO2 gels with various concentrations of colloidal suspensions of Ag nanoparticles of a certain dimension (this activity has an iterative character for different dimensions of the Ag colloidal nanoparticles)
- supercritical drying with liquid CO2 of the impregnated TiO2 gels

4b. Thermogravimetric analyses (DTG) of the synthesized composites
4c. Heat-treatment of the type B composites at temperatures as determined from DTG to remove the organic residues

5. Testing the sensor capacity of the type B composites to detect by SERS and SERRS chemical pollutants from water
5a. Testing the sensor capacity of the type B composites to detect by SERS and SERRS chemical pollutants from water
5b.  Evaluating the type B composites capacity to detect by SERRS organic pollutants from water
5c. Identifying the porous composites with the greatest SERS and SERRS-sensor capacity for a specific water pollutant type

 

6. Analyzing the structure and morphology of the highly porous type B composites
6a. Morphological investigations of the type B composites with the greatest SERS and SERRS-sensor capacity for a specific water pollutant type (previously identified) by UV-Vis, SEM, TEM and measurements of pores volume distribution and their specific area (BET and Langmuir)
6b. Structural investigations (Raman and IR spectroscopy, XRD measurements, etc.) of the type B composites previously identified
6c. Correlation of the results derived from the morpho-structural analysis with the sensor capacity of the composites to detect by SERS and SERRS chemical pollutants from water

 

7. Obtaining highly porous type C samples
7a. Preparation of higly porous films

7b. Thermogravimetric analyses (DTG) of the synthesized composites
4c. Heat-treatment of the type C samples at temperatures as determined from DTG to remove the organic residues

 

8. Testing the sensor capacity of the type C samples to detect by SERS and SERRS chemical pollutants from water
8a. Evaluating the type C samples capacity to detect by SERS and SERRS organic pollutants from wate
8b.  Identifying the type C samples with the greatest SERS and SERRS-sensor capacity for a specific water pollutant type
8c. Testing the sensor capacity of the type C samples to detect by SERS and SERRS chemical pollutants from industrial and medical wastewaters

 

9. Analyzing the structure and morphology of the highly porous type C samples
9a. Morphological investigations of type C samples by UV-Vis, SEM, TEM and measurements of pores volume distribution and their specific area (BET and Langmuir)
9b. SStructural investigations (Raman and IR spectroscopy, XRD measurements, etc.) of the type C samples
9c. Correlation of the results derived from the morpho-structural analysis with the sensor capacity of the type C samples to detect by SERS and SERRS chemical pollutants from water