Presentation on pervoskite nanoparticles

This presentation is all about pervoskite nanoparticles

1. Presentation on Perovskite Nanoparticles By Y o u n i s H a m e e d

2. Outline Introduction Importance Inspiration Objective Methodology Conclusion

3. Introduction Perovskite is a material with general chemical formula ABX 3 , where A and B are different sized cations and X is an anion which bonds to both. They exist mostly as oxides i.e. X is often oxygen but other big ions such as halides, nitrides and sulphides are also probable.

4. Importance Perovskites possess wide range of features such as ferromagnetism, antiferromagnetism , multiferroicity, superconductivity, clossal magnetoresistance (CMR) and catalytic activity. Due to these properties, they find potential applications in sensors, solid oxide fuel cells, solar cells, bio-medical area, catalysts etc.

5. Inspiration Advances in nanotechnology have sparked renewed attention in nanostructures such as quantum d ots (QDs), nanoparticles (NPs), nanowires (NWs) and nanorods (NRs). Nanoscale materials exhibit different properties than their bulk counterparts because of : large surface area to volume ratio, which inturn increases the surface energy and affects the way they react with each other and with other substances. Hence, leading to different chemical, optical, electronic, magnetic and mechanical properties. NPs play a great role in electronics, optics, textiles, food technology, medicine etc.

6. Objective To synthesize perovskite NPs and predict their capability in different practical applications.

7. Methodology Nano-materials are synthesized under two basic approaches viz Top-down approach and Bottom-up approach. According to these two approaches, synthesis methods are further divided into three types which are given in the next slide as a flow chart.

8. Methodology Continued Applied for synthesis of Nano-materials Physical Methods Biological Methods Chemical Methods Ball Mill Vaporization Melt Mixing etc. Fungi, Yeast, Bacteria Plant extract and enzymes e tc. Solvothermal Hydrothermal Sol-gel e tc.

9. Methodology Continued Important criteria for synthesis of NPs are control over size, shape and various properties of NPs. However, the choice of method depends upon the material of interest, type of nano -structure, size, quantity etc. After successful synthesis of NPs, different properties can be investigated by using different characterization techniques.

10. Conclusion Perovskite NPs of interested material can be synthesized by using a suitable method and different characterization techniques can be used to study their exhibiting properties. Further, their potential for different practical applications can be looked into.

11. Thank You