Modification of NiAlLayered Double Hydroxide with Dodecylsulfate Ion as Dye Adsorbent
Abstract
In this work, NiAl-layered double hydroxide (NiAl-LDH) modified with dodecylsulfate was prepared by the reaction between an aqueous solution of dodecylsulfate (DS-) and an aqueous suspension of NiAl-LDH under hydrothermal reaction at 120 °C for 24 h. Various amounts of DS- were studied with the controlled amount of the LDH which referred to subscript x in DSx@NiAl-LDH for the as-prepared products. The XRD patterns of all products revealed that the interlayer space was increased with increasing the amount of DS- up to 3.52 nm where x = 50 owing to the paraffin bilayer arrangement of DS- molecules in the interlayer space. DS50@NiAl-LDH was used as the representative adsorbent for elimination of methyl orange, methylene blue and alizarin from solution. The modified adsorbent showed the highest removal efficiency of methyl orange at 97% due to the electrostatic interaction. In addition, for every type of dye tested, the adsorption capacity of the surface-modified NiAl-LDH was superior to the pristine NiAl-LDH due to the improved hydrophobic and hydrogen bonding interactions in the former. Keywords : NiAl-layered double hydroxide, dodecylsulfate, adsorbent, dyeReferences
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Kong, Y., Huang, Y., Meng, C. & Zhang, Z. (2018a). Sodium dodecylsulfatelayered double hydroxide and its use in the adsorption of 17estradiol in wastewater. RSC Advances, 8, 3144031454.
Kong, Q., Wu, T., Wang, J., Liu, H. & Zhang, J. (2018b). Improving the thermal stability and flame retardancy of PP/IFR composites by NiAllayered double hydroxide. Journal of Nanoscience and Nanotechnology, 18, 36603665.
Liu, Z., Ma, R., Osada, M., Iyi, N., Ebina, Y., Takada, K. & Sasaki, T. (2006). Synthesis, anion exchange, and delamination of CoAl layered double hydroxide: Assembly of the exfoliated nanosheet/polyanion composite films and magnetooptical studies. Journal of the American Chemical Society, 128, 48724880.
Ogawa, M. & Hiramine, M. (2014). Direct correlation between nanostructure and particle morphology during intercalation. Crystal Growth & Design, 14, 15161519.
Ontam, A., Khaorapapong, N. & Ogawa, M. (2012). Immobilization of cadmium telluride nanoparticles on the surface of hexadecyltrimethylammoniummontmorillonite. Journal of Materials Chemistry, 22, 2000120007.
Sun, Y., Zhou, J., Cai, W., Zhao, R. & Yuan, J. (2015). Hierarchically porous NiAlLDH nanoparticles as highly efficient adsorbent for pnitrophenol from water. Applied Surface Science, 349, 897903.
Wang, H., Xiang, X. & Li, F. (2010). Facile synthesis and novel electrocatalytic performance of nanostructured NiAl layered double hydroxide/carbon nanotube composites. Journal of Materials Chemistry, 20, 39443952.
Yang, Z.Z., Wei, J.J., Zeng, G.M., Zhang, H.Q., Tan, X.F., Ma, C., Li, X.C., Li, Z.H. & Zhang, C. (2019). A review on strategies to LDHbased materials to improve adsorption capacity and photoreduction efficiency for CO2. Coordination Chemistry Reviews, 386, 154182.
Zhang, C., Yang, S., Chen, H., He, H. & Sun, C. (2014). Adsorption behavior and mechanism of reactive brilliant red X3B in aqueous solution over three kinds of hydrotalcitelike LDHs. Applied Surface Science, 301, 329337.
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2020-01-15
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บทความวิจัยจากการประชุมวิชาการระดับชาติ"วิทยาศาสตร์วิจัย"ครั้งที่ 11
