Synthesis and characterization of a molecularly imprinted polymer for Pb2+ uptake using 2-vinylpyridine as the complexing monomer

• المؤلفون الرئيسيون: Nor Azah Yusof,, Appri Beyan,, Md. Jelas Haron,, Nor Azowa Ibrahim,
• التنسيق: مقال
• اللغة: English
• منشور في: Universiti Kebangsaan Malaysia 2010
• الوصول للمادة أونلاين: http://journalarticle.ukm.my/7413/1/01_Md_Yeaminhossain.pdf; http://journalarticle.ukm.my/7413/; http://www.ukm.my/jsm/english_journals/vol39num5_2010/contentsVol39num5_2010.html

Molecularly imprinted polymer (MIP) particles for selective extraction of Pb2+ ion from aqueous media were prepared using non-covalent molecular imprinting methods. 2-vinylpyridine was chosen as the complexing monomer. The imprinted polymer was synthesised by radical polymerisation. The template (Pb2+) was removed by leaching with 0.1 M HCl. The polymer particles (imprinted and non-imprinted) were characterised by spectroscopy. The effect of different parameters such as pH, kinetic, adsorption isotherm and selectivity were evaluated. The maximum adsorption capacity is 150 μg Pb2+/mg MIP. The adsorption efficiently occurred at pH 6. The selectivity coefficients of the imprinted polymer particles for Pb2+/Zn2+ and Pb2+/Al3+ were 13.55 and 1.71, respectively.