Facile Synthesis of Luffa Sponge Activated Carbon Fiber Based Carbon Quantum Dots with Green Fluorescence and Their Application in Cr(VI) Determination
Binhua Luo, Hang Yang, Boxun Zhou, Sanjrani Manzoor Ahmed, Yi Zhang, Hua‐Min Liu, Xiaowen Liu, Yong He, Shibin Xia
Abstract
Carbon quantum dots (CQDs) were prepared by a chemical oxidation method using luffa sponge based activated carbon fiber as the raw material. The obtained CQDs were well characterized. The fluorescence quenching effect of Cr(VI) ion on CQDs was investigated. The results show that the addition of Cr(VI) changes the intensity of the ultraviolet characteristic absorption peak of CQDs, and causes static quenching of the fluorescence of CQDs. With the increase in the Cr(VI) concentration, the fluorescence of CQDs was gradually extinguished linearly.
Topics & Concepts
FluorescenceQuenching (fluorescence)Carbon fibersCarbon quantum dotsAbsorption (acoustics)Materials scienceUltravioletFiberPhotochemistryActivated carbonIonChemistryQuantum dotNanotechnologyAdsorptionComposite materialOptoelectronicsOrganic chemistryOpticsComposite numberPhysicsCarbon and Quantum Dots ApplicationsNanocluster Synthesis and ApplicationsAdvanced Nanomaterials in Catalysis