Jump to main content
Jump to site search


A 3D net-like structured fluorescent aerogel based on carboxy-methylated cellulose nanofibrils and carbon dots for a highly effective adsorbent and sensitive optical sensor of Cr(VI)

Abstract

To effectively detect and remove Cr(VI) from aqueous solution, a 3D net-like structured fluorescent aerogel was designed and synthesized using highly photoluminescent carbon dots (CDs) and renewable natural carboxy-methylated cellulose nanofibrils (CM-CNF). The surface morphology, microstructure, chemical elements and fluorescence properties of this novel aerogel were studied. Sorption experiments were designed to investigate the sorption properties of Cr(VI) onto this fluorescent aerogel. The adsorption process was described by pseudo-second-order kinetic model and Freundlich model, and the maximum adsorption capacity for Cr(VI) reached 433.5 mg gā€“1. Furthermore, this novel aerogel emitted bright blue fluorescence with a quantum yield of 11.8 % when applied to Cr(VI) sensing, and a good linear relationship between the quantum yield and Cr(VI) concentration was demonstrated. Accordingly, this novel 3D net-like structured fluorescent aerogel should be a promising smart sorbent for the removal of Cr(VI) with advantages of the 3D net-like structure and rich functional groups that accelerate Cr(VI) sorption and the wrapped fluorescent probe that improves Cr(VI) sensing.

Back to tab navigation

Supplementary files

Article information


Submitted
08 Dec 2019
Accepted
31 Jan 2020
First published
04 Feb 2020

Environ. Sci.: Nano, 2020, Accepted Manuscript
Article type
Paper

A 3D net-like structured fluorescent aerogel based on carboxy-methylated cellulose nanofibrils and carbon dots for a highly effective adsorbent and sensitive optical sensor of Cr(VI)

H. Yuan, G. Yang, Q. Luo, T. Xiao, Y. Zuo, X. Guo, D. Xu and Y. Wu, Environ. Sci.: Nano, 2020, Accepted Manuscript , DOI: 10.1039/C9EN01394F

Social activity

Search articles by author

Spotlight

Advertisements