Fluorescence “turn on” detection of Cr3+ using N-doped-CDs and graphitic nanosheet hybrids

Abstract

Nitrogen-doped CDs and graphitic nanosheet hybrids (denoted as “N-doped-CDs@GNSs”) were firstly obtained by a simple, economical, and green preparative strategy using peanut shells. The N-doped-CDs@GNSs were used for fluorescence “turn on” detection of Cr³⁺ based on fluorescence resonance energy transfer, without further surface modification.