Abstract
Discarded dental alginate impression materials are used as carbon sources to prepare novel carbon microflakes via an industrially feasible pyrolysis–etching approach. Various characterizations reveal that the sulfur-doped carbon materials are porous layered-like microflakes with thicknesses of ~100–400nm. These microflakes have a high specific surface area of ~1000m2g−1, a large pore volume of 1.30cm3g−1 and a high mesoporosity of 95.6% without any activation, thereby making them promising for energy storage applications. Therefore, this study provides technological guidance in the use of discarded alginate impression materials to produce high-quality carbon materials.
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