Department of Applied Chemistry, Faculty of Science, Islamic Azad University, Rasht Branch, Rasht, Iran.
J Hazard Mater. 2011 Dec 15;197:144-52. doi: 10.1016/j.jhazmat.2011.09.067. Epub 2011 Oct 1.
In this study, cyclohexane 1,3,5-tericarboxylic acid (CHA) and β-isopropylglutaric acid (IPA) were used to obtain the cross-linked forms of the extracted pectin from orange skin (PO), viz. PO-CHA and PO-IPA. These agents were used to stabilize the synthesized Fe(0) nano-particles (Fe(0) NPs) viz. the preparation of Fe(0)-PO, Fe(0)-PO-CHA and Fe(0)-PO-IPA, to compare their ability for the removal of Acid yellow 17 (AY 17) from aqueous solution. FT-IR spectra specified that bidentate bridging and monodentate interaction were the primary mechanisms for binding PO-CHA and PO-IPA molecules to Fe(0) NPs, respectively. The removal percent of AY 17 was determined 97.8, 92.8, 84.1, 79.6, 72.8, 61.5 and 45.6 by Fe(0)-PO-CHA, Fe(0)-PO-IPA, Fe(0)-PO, PO-CHA, PO-IPA, PO and Fe(0) NPs, respectively, for the dye initial concentration of 200 ppm, at the optimized conditions. In these agents, Fe(0) nano-particles performed the reduction process of AY 17, while the organic polymers performed its adsorption process.
在这项研究中，环己烷 1,3,5-三羧酸（CHA）和β-异戊二酸（IPA）被用于获得从橙皮中提取的果胶的交联形式，即 PO-CH 和 PO-IPA。这些试剂被用于稳定合成的 Fe(0)纳米粒子（Fe(0)NPs），即制备 Fe(0)-PO、Fe(0)-PO-CH 和 Fe(0)-PO-IPA，以比较它们从水溶液中去除酸性黄 17（AY 17）的能力。FT-IR 光谱表明，PO-CH 和 PO-IPA 分子与 Fe(0)NPs 的结合主要通过双齿桥联和单齿相互作用。在优化条件下，当染料初始浓度为 200ppm 时，Fe(0)-PO-CH、Fe(0)-PO-IPA、Fe(0)-PO、PO-CH、PO-IPA、PO 和 Fe(0)NPs 分别将 AY 17 的去除率确定为 97.8%、92.8%、84.1%、79.6%、72.8%、61.5%和 45.6%。在这些试剂中，Fe(0)纳米粒子进行了 AY 17 的还原过程，而有机聚合物进行了其吸附过程。
