Dual-function cellulose composites for fluorescence detection and removal of fluoride. (February 2018)

• Record Type: Journal Article
• Authors: Li, Meng; Liu, Zhijiang; Wang, Hui-Chen; Sedgwick, Adam C.; Gardiner, Jordan E.; Bull, Steven D.; Xiao, Hui-Ning; James, Tony D.
• Is Part Of: Dyes and pigments. Volume 149(2018)
• Page Start: 669
• Page End: 675
• Publication Date: 2018-02
• Subjects: Fluorescent sensor -- Cellulose support -- Fluoride sensing -- Boronic acid sensor -- Functional materials; Dyes and dyeing -- Periodicals; Pigments -- Periodicals; 667.2
• DOI: 10.1016/j.dyepig.2017.11.033
• Languages: English
• ISSNs: 0143-7208

Abstract

Abstract: A biodegradable and robust fluorogenic cellulose material for simultaneous fluoride recognition and adsorption at environmentally significant levels is presented. The fluorescent modified cellulose (FMC) containing a boronic acid-based anthracene group as a fluorescent signaling unit displays a selective fluorescence enhancement with F − . On the other hand, Cl −, Br −, SO4 2−, H2 PO4 − and ClO4 − did not induce significant changes in fluorescence. Furthermore, FMC shows excellent F − adsorption over a wide range of pH with a low dosage. Equilibrium studies demonstrate that the adsorption of F − follows the Langmuir model in an aqueous solution. While, adsorption kinetics were found to follow the pseudo-second-order model. The simplicity of the method and the ability to detect and remove fluoride in waste water is noteworthy given the problems associated with fluoride pollution in drinking water. Graphical abstract: Highlights: A fluorecent modified cellulose (FMC) material for fluoride recognition and adsorption was successfully synthesised. FMC showed a selective fluorescence enhancement with F − over simple anions such as Cl −, Br −, SO4 2−, H2 PO4 − and ClO4 − . FMC showed excellent adsorption capacity for F − at environmentally significant levels.