Transformation of waste rice straw to carbon quantum dots and their potential chemical sensing application: green and sustainable approach to overcome stubble burning issues

Peanut shell carbon quantum dots modified with citric acid: amplifying visual detection of fluorescence sensitivity for Cu2+

“…16 Different preparation methods have used different chemicals as the source of carbon or the surface passivation reagent. Previously, the bottom-up method has been widely used for the pyrolysis of green materials, such as banana fruit peel waste, 17 passion fruit shells, 18 dragon fruit peels, 19 waste tea leaves, 20 lychee seeds, 21 coconut husk, 22 walnut shells, 5 lemon peels 23 rice straw, 24 date seeds, 25 and peanut shells. 26 These green materials have received the most attention in previous years.…”