Eu 3+ doped ZnAl layered double hydroxides as calibrationless, fluorescent sensors for carbonate.
Alysson Ferreira MoraisIvan G N SilvaBruno J FerreiraAlexandre C TeixeiraSreeprasanth Pulinthanathu SreeHuayna TerraschkeFernando A GarciaEric BreynaertDanilo MustafaPublished in: Chemical communications (Cambridge, England) (2023)
The photoluminescence properties (PL) of Eu 3+ hosted in the hydroxide layers of layered double hydroxides (LDHs) enables calibrationless quantification of anions in the interlayers. The concept is demonstrated during the nitrate-to-carbonate ion exchange in Zn 2+ /Al 3+ /Eu 3+ LDHs and can be implemented as a remote optical sensor to detect intrusion of anions such as Cl - or CO 3 2- .