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Updated: Dec 17, 2025

Surface Functionalization of Metal-Organic Frameworks for Improved Moisture Resistance
Published on: September 5, 2018
Highly selective detection of Cu2+ in aqueous media based on Tb3+-functionalized metal-organic framework
Xiong-Xin Peng1, Guang-Ming Bao2, Yu-Fei Zhong1
1Institute of Functional Materials and Agricultural Applied Chemistry, Jiangxi Agricultural University, Nanchang 330045, PR China.
Abstract:
In this work, a metal-organic framework UiO-66-(COOH)2 has been synthesized and is further functionalized with Tb3+ through coordination interactions. The functionalized MOF, denoted as Tb3+@UiO-66-(COOH)2, is fully characterized and further developed as an excellent fluorescent probe to monitor Cu2+ ions in aqueous media by fluorescence quenching effect. Tb3+@UiO-66-(COOH)2 exhibits high selectivity and sensitivity, broad linear concentration range (0-200 μM), low detection limits (0.23 μM), fast response speed (within 1 min), as well as in situ naked eye observation under UV light for sensing Cu2+ ion. Furthermore, this probe was successfully employed to detect Cu2+ ion in real water with good recovery. Hence, this work developed a very excellent fluorescent sensor with high potential practical applications for detection of Cu2+ ion in environmental water samples.
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