character: Dr. Emily Chen
topic: Nanomaterials for Water Purification
grade: 11
subject: Chemistry
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character: Professor John Smith
topic: Advanced Materials in Environmental Chemistry
grade: 11
subject: Chemistry
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character: Dr. Sarah Patel
topic: Innovative Filtration Techniques Using Nanotechnology
grade: 11
subject: Chemistry
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character: Dr. Michael Lee
topic: Nanostructured Materials for Sustainable Development
grade: 11
subject: Chemistry
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