1. Xiaopeng Min, Li Wang, Yin Wang (Advisor)
Catalytic Destruction of Pharmaceuticals by Structured Palladium-based Material
Xiaopeng Min, Li Wang, Yin Wang (Advisor)
Department of Civil and Environmental Engineering
University of Wisconsin-Milwaukee

2. Content Background Catalyst Design and Characterization
Catalyst Performance
Conclusion
Future Work

3. Background
Growing number of anthropogenic trace contaminants was detected in wastewater and drinking water sources
Supported nanophase catalysts being developed to treat emerging contaminants

4. Background Pd H H H H -Cl -H
Pd converts H2 to Hads, a potent reductant and hydrogenating agent
Rational design of advanced structured material to enhance its water treatment suitability

5. Catalyst Design Synthesis Steps: Synthesis of magnetic Fe3O4 particle
Synthesis of SiO2
Synthesis of SiO2
Modification of with -NH2
Deposition of Pd on

6. Catalyst Characterization

7. Catalyst Characterization

8. Catalyst Performance
Diclofenac: 2-[(2,6-dichlorophenyl)amino]phenylacetate
the anti-inflammatory drug
low biodegradability 
detected in surface and drinking waters

9. Catalyst Performance

10. Catalyst Performance

11. Catalyst Performance

12. Conclusion
For the diclofenac concentrations of 10 and 20 mg/L, structured Pd-based catalyst can destruct the diclofenac by about 99.7% after 120 min and 99.1% after 240 min, respectively.
Compared with commercial material, immobilization of Pd in mesoporous structure enhanced the activity of catalytic dechlorination of diclofenac.

13. Future Work Immobilization of Pd using different functional group
Treatment of various emerging contaminants
Determination of the effectiveness in recycling application

14. Thank you ! Acknowledgment
This work was financially supported by the fund from College of Engineering and Applied Science, University of Wisconsin-Milwaukee.
Thank you !