Prussian blue goes from pigment to purification
Phys.org
February 23, 2026
AI-Generated Deep Dive Summary
Prussian blue, the iconic pigment that gave its name to traditional blueprints and adorned masterpieces like Hokusai's "Great Wave off Kanagawa," has transcended its artistic origins to become a versatile industrial material. Originally used for laundry detergents, battery components, and even poison control, this inexpensive and abundant chemical is now gaining attention for its potential in water purification and energy storage. Researchers at the University of Chicago Pritzker School of Molecular Engineering (UChicago PME) have uncovered new applications for Prussian blue analogs (PBAs), revealing their unique mechanisms that could revolutionize fields ranging from environmental science to renewable energy.
The study highlights how PBAs' porous, crystalline structure enables them to trap and filter harmful substances, such as heavy metals and dyes, making them ideal candidates for water purification. This ability stems from the material's ability to adsorb contaminants effectively, a property that has been well-documented but not fully understood until now. By delving into the molecular interactions within PBAs, researchers have unlocked insights into how these materials can be fine-tuned for specific industrial uses. For instance, modifying PBAs could enhance their capacity to store energy in batteries or improve their efficiency in capturing pollutants.
This breakthrough matters because it addresses pressing global challenges: environmental sustainability and clean energy. Prussian blue's affordability and scalability make it a promising solution for industries seeking cost-effective materials. Its potential applications extend beyond water purification and battery technology; PBAs could also play a role in advancing hydrogen storage, which is critical for transitioning to renewable energy sources. By understanding the science behind PBAs, researchers are paving the way for innovations that could have far
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Originally published on Phys.org on 2/23/2026