원문정보
초록
영어
This experiment investigated the effects of adding nano zinc oxide (ZnO) in talcum powder. We observed an increase in ultraviolet (UV) light absorption (or decrease in UV transmission) with the addition of nano ZnO in talcum powder. Commercial talcum powder (with 25% ZnO content) allowed a transmission of 0.3% UV light. However, our homemade talcum powder, with an addition of only 5% nano ZnO, performed much better with a transmission of less than 0.1% UV light even though the ZnO content is 5 times less than that of commercial talcum powder. Electron microscopy micrographs showed that nano ZnO possessed nanorods and nanoplates. This work offers a new promising application of nano ZnO in improving the UV absorption of commercial talcum powder thereby offering superior UV protection that can reduce UV-related skin problems including sunburn and skin cancer.
목차
1. INTRODUCTION
1.1. Background of Study
1.2. Statement of Problem
2. EXPERIMENTAL DETAILS
2.1. Process Flowchart
2.2 Raw Materials and Sample Preparation
2.3 Characterization
3. RESULTS AND DISCUSSIONS
3.1 Optical and Electrical Characterization
3.2 Electron Microscopy
4. SUMMARY AND CONCLUSION
5. RECOMMENDATION
6. ACKNOWLEDGEMENTS
7. REFERENCES