Researchers at Dublin City University have shown that graphene can be produced from graphite recovered from electronic waste using a kitchen blender, tap water and old newspaper. The study, published in ACS Sustainable Resource Management, used liquid-phase exfoliation to separate atom-thick carbon sheets from graphite heat spreaders found inside smartphones.
Graphite consists of stacked layers of carbon, each layer being graphene. The team placed commercial graphite and material salvaged from a discarded phone into a blender with water and a pulp made from washed newspaper. The cellulose fibers from the newspaper acted as a temporary barrier that kept the newly separated graphene sheets from re-aggregating.
Without the newspaper pulp, the material settled out of the water within minutes. With it, the suspension remained usable for several hours and could be resuspended by shaking. The resulting liquid contained graphene nanosheets, confirmed by sophisticated laboratory analysis at the university.
The work builds on earlier research that produced graphene from pencil lead, soap and coffee filters. The new approach replaces specialized solvents and purified water with waste streams — newspaper and e-waste graphite — and ordinary tap water. A single phone contains only a small amount of graphite, so most experiments used a commercial equivalent, but material from a real device was also successfully exfoliated.
The researchers emphasize that the method does not replace industrial graphene production. Instead, it lowers the barrier for schools, community labs and research groups in lower-income settings to conduct nanoscience experiments locally. Advanced equipment is needed only for verification, not for the production step itself.
Electronic waste reached 62 million metric tons globally in 2022, with only 22.3% documented as properly recycled. Recovering graphite from discarded devices for graphene production offers a potential second life for a material often overlooked in recycling efforts focused on precious metals.
The study frames the result as a demonstration of accessibility rather than optimal yield. The process uses transient cellulose stabilization to enable tap-water-based production of graphene inks from electronic waste, showing that meaningful nanoscience can begin with household items.
The 'wonder material' graphene can be made using a kitchen blender, a mobile phone and a newspaper
This is an independent summary. The complete reporting, supporting context and any primary documents remain with Phys.org.