科研之友
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摘要
This essay explores the use of the sol-gel method based on the Congo-red reagent as an effective approach to create an optical sensor for the detection and tracking of Thorium(Ⅳ)(Th4+).Upon exposure to a Th4+-containing solution,the sensor exhibits significant absorption signal change that linearly correlates with Th4+ ion concentration across a wide range.It is capable of detecting Th4+ ion in the linear dynamic range of 1.7 × 10-8 to 1.1 × 10-3 mol/L,with a detection limit of 5.3 × 10-9 mol/L.This optode’s exceptional porous network,created through the sol-gel technique,contributes to its commendable performance,reliable repeatability,improved sensitivity,swift response time,and discerning selectivity.
