The optical sensitive detection of molybdate ions by layered europium hydroxides

被引：15
作者：
Shao, Baiyi [1 ,2 ]
Zhang, Xiaobao [1 ,2 ]
Wang, Xinying [1 ]
Cui, Fangming [2 ]
Yang, Xiaojing [1 ]
机构：
[1] Beijing Normal Univ, Coll Chem, Beijing Key Lab Energy Convers & Storage Mat, 19 Xinjiekouwai St, Beijing 100875, Peoples R China
[2] China Acad Space Technol, Qian Xuesen Lab Space Technol, 104 Youyi Rd, Beijing 100094, Peoples R China
来源：
OPTICAL MATERIALS | 2020年 / 100卷
基金：
中国国家自然科学基金;
关键词：
Layered europium hydroxides; Molybdate ions; Detection; Antenna effect; ENHANCED LUMINESCENCE; PHOTOLUMINESCENCE; INTERCALATION; MOLYBDENUM; ANIONS; NANOPARTICLES; HYDROTALCITE; GUESTS; TB; EU;
D O I：
10.1016/j.optmat.2019.109597
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A mild and effective way working over a wide pH range (from 2 to 12) to detect selectively trace amounts of molybdate ions in aqueous solutions in a short time was realized by the antenna effect between the molybdate ions and the layered europium hydroxide (LEuH). The efficient energy transfer from molybdate ions to LEuH allowed 0.1 g LEuH to detect concentration as low as 100 ppm in 30 min. According to the exploration of different experimental conditions, the photoluminescence (PL) intensity of Eu3+ is gradually enhanced with the increased adsorption for molybdate ions. When the quantity of molybdenum adsorbed is within a certain range, the multiple of PL increase has an exponential function relation with the adsorption quantity providing a new idea to detect molybdate ions in industry.
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页数：7
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