From peels and coffee grounds to tunable carbon nanodots: waste-derived biocarbon meets ultrafast laser ablation
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Water-soluble, photoluminescent carbon nanodots (CNDs) were produced in minutes by picosecond-laser ablation of biocarbons obtained from orange peel, avocado peel, and spent coffee grounds. Mild pyrolysis at 350 °C first transformed the wastes into ash-free b... ...
