synthesis of metal sulphate of nanoparticles

Kwon

1. Synthesis of metal sulphite of nanoparticles

2. INTRODUCTION: Nanoparticles are materials with dimensions in the range of 1–100 nm. Metal sulfide nanoparticles have unique electrical, optical, and catalytic properties. They are widely used in sensors, solar cells, antibacterial agents, and photocatalysis . Their properties depend strongly on size, shape, and synthesis method. Conventional synthesis methods can be expensive and involve toxic chemicals Eco-friendly and cost-effective synthesis methods are gaining attention This project focuses on the synthesis and study of metal sulfide nanoparticles with controlled features.

3. Research problem 1. Difficulty in achieving uniform nanoparticle size and shape.
2. Limited control over crystal structure during synthesis.
3. Use of toxic or hazardous chemicals in conventional methods.
4. Poor stability and agglomeration of nanoparticles over time.
5. High cost and complexity of some synthesis techniques.
6. Incomplete understanding of structure–property relationships.

4. Review of literature survey 1. *Patel et al. (2019)* synthesized ZnS nanoparticles via chemical precipitation and reported size control through pH variation.
2. *Kumar and Singh (2020)* used the hydrothermal method for CuS nanoparticles, achieving good crystallinity and optical properties.
4. *Rani et al. (2021)* demonstrated green synthesis of metal sulfides using plant extracts, reducing toxicity and cost.
5. *Ali et al. (2020)* studied the photocatalytic activity of CdS nanoparticles under visible light, showing efficient dye degradation.
6. * Meena and Roy (2017)* explored the effect of temperature on particle size in sol-gel synthesized PbS nanoparticles.

5. Objectives 1. To synthesize metal sulfide nanoparticles using an eco-friendly and cost-effective method.
2. To control particle size and morphology through optimized synthesis parameters.
3. To characterize the structural and optical properties of the synthesized nanoparticles.
4. To evaluate the stability and dispersibility of the nanoparticles.
5. To study the photocatalytic or antibacterial activity of the metal sulfide nanoparticles.
6. To compare the effectiveness of different synthesis techniques or doping element

6. Result 1. Metal sulfide nanoparticles were successfully synthesized with controlled size and shape.
2. XRD analysis confirmed the crystalline nature of the nanoparticles.
3. SEM/TEM images revealed uniform morphology with minimal agglomeration.
4. UV-Vis spectroscopy showed strong absorption in the visible region, indicating good optical properties.
5. The nanoparticles exhibited notable stability and dispersibility in solution.
6. Antibacterial/ photocatalytic tests showed enhanced activity compared to undoped sample

7. Decision 1. The selected synthesis method proved effective for producing high-quality metal sulfide nanoparticles.
2. Controlled parameters led to uniform particle size and reduced agglomeration.
3. Structural and optical characterizations confirmed the desired nanoparticle properties.
4. The use of eco-friendly methods reduced chemical hazards and cost.
5. Doping or synthesis variation enhanced functional properties like antibacterial or photocatalytic activity.
6. The synthesized nanoparticles are suitable for further application-based studies

8. Metal sulfides in future 1. Synthesis method improve panni particle size-um shape-um better control that
2. Different doping elements use panni nanoparticles properties enhance that
3. Stability and dispersibility -a improve panna studies take
4. Photocatalytic , antibacterial activity-la deeper research done
5. Real-world applications-la nanoparticles use pannurathukku testing that
6. Green synthesis methods explore panni environment-friendly process-a develop that

9. Conclusion Metal sulfide nanoparticles were successfully synthesized with controlled size and shape. Characterization techniques confirmed the crystalline structure and uniform morphology. Optical properties showed strong absorption, indicating good potential for applications. Eco-friendly synthesis methods reduced toxicity and production costs. The nanoparticles demonstrated enhanced antibacterial/ photocatalytic activity. These findings support further research and practical applications of metal sulfide nanoparticles

10. Thank you 😊