A fluorescent DNAzyme-based biosensor for the detection of lead ions using carbon quantum dots prepared from grapefruit peel

Abstract

The key design strategy lies in hemin/G-CQDs. The fluorescence of G-CQDs was quenched after binding with hemin and recovered after removing hemin by combining with a G-quadruplex.

Detection of GSH with a dual-mode biosensor based on carbon quantum dots prepared from dragon fruit peel and the T-Hg(ii)-T mismatch

“…A large number of biomass materials, such as crayfish shell, watermelon, pomegranate, grapefruit, had been utilized as carbon sources for the preparation of CQDs. 20–25 Recently, dragon fruit peel was frequently regarded as agricultural waste and discarded. Dragon fruit peel contains numerous natural organic ingredients.…”