Photo catalytic degradation by using Nanocatalyst

Presentation on photocatalytic degradation of industrial dyes, pollutants and CO2 reduction

1. Controlled Synthesis of Ag- S n / α - Nanocomposites for Improving Visible-Light Catalytic Activities of Pollutant Degradation and C Reduction   Presented by : Muhammad Zaka Ansar 133-FoS/ PhDPHY /F-23 Presented to: Dr. Imran Murtaza

2. Purpose of the research Environmental pollution is increasing day by day. The US Environmental Protection Agency has listed 2,4-DCP as one of the most toxic pollutants It is highly desirable to develop green and efficient techniques to degrade organic pollutants, such as 2,4-DCP, in water.

3. Research Problem Low Efficiency of Traditional Photocatalysts Limited Light Absorption Stability and Recyclability Selective Catalysis Scalability and Cost-effectiveness

4. The Strategy The hematite α - is a promising photocatalyst candidate but it has short recombination time and hence poor charge separation One of the most applied strategies is to introduce another semiconductor to couple with α - , forming a heterojunction To increase the catalytic efficiency a co catalyst is also needed to be attached with the heterojunction  

5. Degradation Mechanism

6. The Synthesis Process for FO nanosheets

7. The Synthesis Process for SO nanosheets

8. Synthesis of SO/FO

9. Synthesis of Ag-SO/FO SO/FO in ethanol AgNO3 with different % age Sonication Beaker is sealed, O2 is flushed out

10. XRD and DRS

11. Morphology of Samples by using TEM

12. Analysis of Ag-Sn /- Nanocomposites   XPS of NCs SEM Micrographs of Sn nanosheets and Ag nanorods  

13. FS related to produced hydroxyl radicals under visible-light irradiation SS-SPS signals for FO, 5SO/FO, and 2Ag-5SO/FO, respectively Charge Separation Characteristics Degradation & Reduction Characteristics Photocatalytic activities for 2,4-DCP degradation of FO, 5SO/FO, and 2Ag-5SO/FO respectively, under visible-light irradiation in the presence of different scavengers.

14. Degradation of DCP Photocatalytic aerobic degradation for 2,4-DCP over (a) FO, x SO /FO; (b) y Ag-5SO/FO samples under visible-light irradiation. Note :( x indicates the mass ratio (1, 3, 5, and 7%) of SO relative to FO, and y indicates the mass ratio (0.5, 1, 2, and 3%) of Ag NPs relative to 5SO/FO respectively.

15. Degradation of BPA and MO and C Reduction   Visible light aerobic degradation of ( a ) MO and BPA; ( b ) and CO 2 reduction Recycle test of 2Ag-5SO/FO for photocatalytic 2,4-DCP degradation.

16. 17 Thank you for your attention Questions……?