Synthesis of Zinc Oxide Nanoparticles

Full activity can be found here: https://education.mrsec.wisc.edu/zno-quantum-dot-nanoparticles/

Zinc oxide quantum dot nanoparticles absorb UV light but are optically transparent making them useful as the active ingredient of sunscreens. The absorption wavelength is a function of particle size when the particles are small. This synthesis involves particle growth at 65°C; samples removed at longer times give larger particles. The cut-off wavelength from the absorption spectra can be used to estimate the particle size.

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