Materials List:
Nanoparticles at Photocatalytic Speed!
https://www.teachengineering.org/activities/view/rice2-2254-nanoparticles-photocatalytic-speed-filtration-system
Each group needs:
- 8 clear plastic 2-oz. cups with lids
- methyl orange solution; 3 ml for each sample and 3 ml for the control (equivalent to 1 full pipette, approx. 12 ml); 30 ml for $4.50 from Home Science Tools
- methylene blue solution; 3 ml for each sample and 3 ml for the control (equivalent to 1 full pipette, approx. 12 ml); 30 ml for $4.50 from Home Science Tools
- titanium dioxide (TiO2) sample solution (prepared by teacher using 5 g TiO2); enough for both dye samples (3 drops = 1 sample); 100 g of TiO2 nanopowder for $64 from SkySpring Nanomaterials
- magnesium oxide (MgO) sample solution (prepared by teacher using 5 g MgO); enough for both dye samples (3 drops = 1 sample); 25-g MgO nanopowder for $43 from SkySpring Nanomaterials
- zinc oxide (ZnO) sample solution (prepared by teacher using 5 g ZnO); enough for both dye samples (3 drops = 1 sample); 100-g ZnO nanopowder for $50 from SkySpring Nanomaterials
- 220 ml distilled water
- stopwatch
- 6 plastic pipettes
- 50-ml graduated cylinder, to measure distilled water
- black permanent marker pen, to label samples
- safety equipment: lab apron, safety goggles, gloves
To share with the entire class:
- Photocatalysis Presentation, Microsoft® PowerPoint® file
- Titanium dioxide (TiO2) smart coat photocatalyst YouTube video
- computer with internet connection and projector, to show the slide presentation and online video
- access to outside; sunlight is the UV light necessary for photocatalytic reactions
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