Ball milling method for nanomaterials synthesis

Ball milling method for nanomaterials synthesis

1. Production of Nano Magnetic Materials: BALL MILLING METHOD PRESENTED BY: M.Ali Raza SUPERVISED BY: DR. Ajaz-un- Nabi Roll No: 230939 MPhil Physics (Nanotechnology)

2. Table of contents: Synthesis of Nano Materials(Techniques) Ball Milling History Definition Ball milling process Construction Parameters Types Applications of Ball milling Characterization Conclusion

3. Synthesis of Nano Materials Top-Down Approach Breakdown of large materials Carving or sculpting- Wide size distribution Less control over size, shape, composition More defects, contamination Bottom-Up Approach Assembly of single atoms, molecules Precise control over size, shape, composition Fewer defects, homogenous composition Narrow size distribution More straightforward, precise synthesis

4. History of Ball Milling…. Invented in 1870 by Friedrich Fischer Initially used for grinding cement and coal Later adapted for mechanical alloying and nanomaterial synthesis

5. BALL MILLING What is Ball Milling Method ? Process was developed by Benjamin And his coworkers at International Nickel company in the Late 1960. - A top-down approach for nanoparticle synthesis. Mechanical breakdown of large substances into smaller ones.  It is used in producing metallic as well as ceramic nanomaterial.

6. Ball Mill Construction.. Drum: Made of stainless steel, iron, or ceramic materials Balls : Made of stainless steel, iron, or tungsten carbide Rotator : Rotate Cylinderical part of Ball milling process Powder of substance whose Nanomaterials will form

7. Working of Ball Milling…. we fill 60% of volume of a cylinder by powder of substance ( Nanomaterial) and Metal balls . The velocity of Cylinder is responsible for this process . ( 1) If velocity of Cylinder is increases then impact is also increases ( i) velocity of Cylinder neither high nor low . ( ii) Milling Time is also responsible for Synthesis of Nanomaterial

8. Ball Milling Parameters.. Ball size and material Rotation speed: Approx (31.94) rev per min Milling time 100-150 hrs Ball-to-material mass ratio 10:1 to 20:1

9. Types of Ball Mills… Planetary ball mill Rotatory ball mill Vibration ball mill Attritor ball mill

10. Applications of Ball Milling.. Synthesis of metal oxides Synthesis of ceramics Synthesis of polymers Synthesis of magnetic materials

11. Characterization of Nanomaterial's X-ray diffraction (XRD ) Transmission electron microscopy (TEM ) Scanning electron microscopy (SEM ) Dynamic light scattering (DLS)

12. Advantages Disadvantages Can be used dry or wet High efficiency Versatility Scalability Optimal milling parameters Bulky size Energy consumption Contamination Limited control over particle shape and size distribution Noise Slow process

13. Conclusion Summary : Ball milling is a cost-effective and efficient method for synthesizing nanomaterial. Future outlook: Continued research and development to overcome challenges and improve properties.