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Photoluminescence and Detection of Hg(II) Ions of Layered Yttrium Hydroxide Composite with Fluorescein
Author NameAffiliationE-mail
LI Jian Chemistry & Chemical and Environmental Engineering College, Weifang University, Weifang, Shandong 261061, China  
SU Fei-Fei College of Chemistry, Beijing Normal University, Beijing 100875, China  
GUO Rong College of Chemistry, Beijing Normal University, Beijing 100875, China  
LIANG Zu-Pei Chemistry & Chemical and Environmental Engineering College, Weifang University, Weifang, Shandong 261061, China zupeiliang@163.com 
MA Shu-Lan College of Chemistry, Beijing Normal University, Beijing 100875, China mashulan@bnu.edu.cn 
Abstract: The layered yttrium hydroxide (LYH) composite (FN/OS-LYH, where FN is fluorescein, 2-(6-hydroxy-3-oxo-(3H)-xanthen-9-yl)benzoic acid, and OS is the anionic surfactant of 1-octane sulfonic acid sodium) is synthesized. The photoluminescence property of the FN/OS-LYH and the application on detection of Hg(II) ions of the delaminated FN/OS-LYH is studied. In solid state, pure FN salt shows no any emission, while the FN/OS-LYH composite displays yellow-green emission at 564 nm, and at delaminated state in formamide (FM), it displays a green emission at 540 nm (with 24 nm blue shift), in contrast to the 572 nm emission of free FN anions with a 32 nm blue shift. The delaminated FN/OS-LYH colloidal suspension exhibits high selectivity for Hg2+ over other ions (Mg2+, Ni2+, Co2+, Cu2+, Zn2+, Pb2+, and Cd2+) with fluorescence quenching. The detection limit of Hg2+ is determined to be 2.73×10-7 mol·L-1 and the quenching constant (Ksv) is 4.82×102 L·mol-1.
Keywords: LRH composite  luminescence  delamination  ion detection  fluorescence recognition
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LI Jian,SU Fei-Fei,GUO Rong,LIANG Zu-Pei,MA Shu-Lan.Photoluminescence and Detection of Hg(II) Ions of Layered Yttrium Hydroxide Composite with Fluorescein[J].Chinese Journal of Inorganic Chemistry,2018,34(10):1826-1832.
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Chinese Journal of Inorganic Chemistry