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ion imprinted polymer particles of neodymium:synthesis,characterization and selective recognition

Journal of Rare Earths 2009年第1期27卷 22-27页

作者：郭佳佳蔡继宝苏庆德 Department of Chemistry University of Science and Technology of China

neodymium ion imprinted polymer（Nd^3＋-IIP） particles for selective solid-phase extraction of Nd^3＋ were prepared and determined with inductively coupled plasma atomic emission spectrometry（ICP-AES）.The unleached Nd^3＋-IIP particles were prepared by the copoly-merization of Nd^3＋-5,7-dichloroquinoline-8-ol-4-vinylpyridine ternary complex with styrene and divinyl benzene, then Nd^3＋ was leached to obtain Nd^3＋-IIP *** adsorption capacity of the Nd3＋-IIP was 35.18 mg/*** largest selectivity coefficient for Nd3＋ in the presence of competitive ions such as La^3＋, Ce^3＋, Pr^3＋ and Sm^3＋ was over *** proposed method was validated by analyzing two certified reference materials（GBW07301a sediment and GBW07401 soil） and the determined values were in a good agreement with standard *** method was convenient, selective, sensitive and applicable to the determination of trace Nd^3＋ in environmental samples with complicated matrix.

关键词： ion imprinted polymer neodymium ion selective separation lanthanides

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A STUDY ON THE NANOCRYSTALLINE TITANIUM DIOXIDE SYNTHESIZED BY ULTRASONIC-ASSISTED SOL-GEL PROCESS

A STUDY ON THE NANOCRYSTALLINE TITANIUM DIOXIDE SYNTHESIZED ...

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第三届全国压电和声波理论及器件技术研讨会

作者： Wan-song CHEN,Yue-tao YANG,Hai-yan WANG,Xiao-jun LIU,Shu-yi ZHANG Lab of Modern Acoustics,Institute of Acoustics,Nanjing University,Nanjing,Jiangsu 210093,China

In this work,nanocrystalline titanium dioxide(TiO) powders doped with rare earth ion(Nd) were prepared by sol-gel process via ultrasonic *** frequency of ultrasonic was 20 *** nanocrystalline powders were investigated by X-ray diffraction spectroscopy(XRD),transmission electron microscopy(TEM),photoacoustic spectroscopy(PAS) which has been widely used to investigate the chemical and physical properties of many kinds of *** the special electronic structure of the rare earth ion,Nd was used as a probe by photoacoustic spectroscopy to study the structural variation of the samples treated by ultrasonic irradiation during the sol-gel *** the temperature of heat treatment increasing,the nephelauxetic effect(1-β) of Nd ion *** the temperature over 500℃,the nephelauxetic(1-β) effect changes little.

关键词： Titanium dioxide ultrasonic irradiation neodymium ion photoacoustic

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