Adsorption of Gold Ions from Aqueous Solution with Photocrosslinked Molecularly Imprinted Hydrogels

Year 2014, Volume: 26 Issue: 3, 115 - 120, 16.03.2015

Soner Çubuk , Memet Vezir Kahraman Ece Kök Yetimoğlu Melike Fırlak

https://doi.org/10.7240/mufbed.36082

Cited By: 1

Abstract

In this study, gold (III) ion-imprinted (Au(III)-Imp) and non-imprinted (N-Imp) new hydrogels was prepared for the purpose of adsorption of the aqueous solution of gold (III) ion. The functional groups of hydrogels were investigated by attenuated total reflectance infrared spectroscopy technique (ATR-IR). The surface morphologies of hydrogels were characterized by scanning electron microscopy (SEM). Au(III) ions adsorptions with Au(III)-Imp and N-Imp hydrogels was investigated and the suitable conditions for maximum adsorption was found as pH:1 and adsorption time: 3 hours. Under this conditions maximum adsorption was determined as 78.4 mg Au(III)/g hydrogel at 500 mg/L.

Keywords

Imprinted hydrogel, gold(III) ion, UV curing, adsorption

Moleküler Olarak Baskılanmış Çapraz Bağlanan Hidrojeller ile Sulu Çözetideki Altın İyonlarının Adsorpsiyonu

Abstract

Bu çalışmada sulu çözeltideki altın (III)  iyonu adsorpsiyonu amacıyla altın (III) iyonu baskılanmış (Au(III)-Imp) ve baskılanmamış (N-Imp) yeni hidrojeller hazırlanmıştır. Hidrojellerin fonksiyonel grupları seyreltilmiş toplam reflektans infrared spektroskopi (ATR-IR) ile araştırılmıştır. Hidrojellerin yüzey morfolojileri taramalı elektron mikroskobu (SEM) ile karakterize edilmiştir. Hazırlanan bu iyon baskılı ve baskılanmamış hidrojellerinin  Au(III) iyonlarını adsorpsiyonunu etkileyen parametreler incelenerek maksimum adsorpsiyon için uygun şartlar ortam pH’ı 1, adsorpsiyon süresi 3 saat ve bu şartlar altında maksimum adsorpsiyon 500 mg/L’ de 78,4 mg Au(III)/g hidrojel olarak belirlenmiştir.

Keywords

Baskılanmış hidrojel, Au(III) iyonu, UV ile sertleşme, adsorpsiyon

References

• Prasada Rao, T., Kala, R. and Daniel, S. (2006). Review Metal ion-imprinted polymers, novel materials for selective recognition of inorganics. Anal. Chimi. Acta., 578, 105–116.
• Ahmadia, S. J., Noori-Kalkhoranb, O. and Shirvani-Arani, S. (2010). Synthesis and characterization of new ion-imprinted polymer for separation and preconcentration of uranyl (UO2 2+
• ) ions. J. Haz. Mat.,175, 193–197.
• Fırlak, M., KökYetimoğlu, E., Kahraman, M. V., Kayaman Apohan, N. and Deniz, S. (2010). Removal of Lead and Cadmium ions from Aqueous Solutions Using Sulphur and Oxygen Donor Ligand Bearing Hydrogels. Polym. Sep. Sci. Technol., 45, 116-128.
• Zhang, L., Yang, S., Han, Zhong, L. Ma, C., Zhou, Y. and Han, X. (2012). Improvement of Ag(I) adsorption onto chitosan/ triethanolamine composite sorbent by an ion-imprinted technology. Appl. Surf. Sci., 263, 696–703.
• Xua, S.; Chena, L., Li, J., Guanb, Y. and Lu, H. (2012). Novel Hg 2+-imprinted polymers based on thymine–Hg2+–thymine interaction for highly selective preconcentration of Hg 2+
• in water samples. J. Haz. Mat., 237– 238, 347– 354.
• Monier, M. and Abdel-Latif, D.A. (2013). Synthesis and characterization of ion- imprinted chelating fibers based on PET for selective removal of Hg2+. Chem. Eng. J. , 221, 452–460.
• Sheng, P.P., Etsell, T. H. (2007) Recovery of gold from computer circuit board scrap using aqua regia. Waste Manag. Res., 25, 380–383.
• Rivas, B. L., Villegas, S. and Ruf, B. (2006). Water-insoluble polymers containing amine, sulfonic acid, and carboxylic acid groups, Synthesis, characterization, and metal-ion-retention properties. J. Appl. Polym. Sci., 99(6), 3266-3274.
• Liu, Y., Cao, X., Hua, R., Wang, Y., Liu, Y., Pang, C. and Wang, Y. (2010). Selective adsorption of uranyl ion on ion-imprinted chitosan/PVA cross-linked hydrogel, Hydrometallurgy, 104(2), 150-155.
• Mülazim, Y., Çakmakçı, E. and Kahraman, M. V. (2011). Preparation of photo
• curable highly hydrophobic coatings using a modified castor oil derivative as a sol–
• gel component. Prog. Org. Coat., 72(3), 394-401.