Improving thermal stability and light fastness of Acid Red 114 by incorporating its anions in a ZnAl-layered double hydroxides matrix

作     者：Haifeng Zhu Liren Wang Pinggui Tang Yongjun Feng Dianqing Li Haifeng Zhu;Liren Wang;Pinggui Tang;Yongjun Feng;Dianqing Li

作者机构：State Key Laboratory of Chemical Resource EngineeringBelting University of Chemical TechnologyBeijing 100029China 

出 版 物：《Particuology》 (颗粒学报（英文版）)

年 卷 期：2012年第10卷第4期

页      面：503-508页

核心收录：

学科分类：070702[理学-海洋化学] 07[理学] 0707[理学-海洋科学] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 070301[理学-无机化学] 0702[理学-物理学] 

基　　金：supported by National Natural Science Foundation of China 

主　　题：Layered double hydroxidesAnion exchangeIncorporationThermal stabilityLight fastness 

摘      要：Incorporation of anions of Acid Red 114 dye （1,3-naphthalenedisulfonic acid, 8-[2-[3,3＇-dimethyl-4＇-[2-[4- [l（4-methylphenyl）sulfonyl]oxy] phenyl]diazenyl] [1,1＇-biphenyl]-4-yl]diazenyl]-7-hydroxy-, disodium salt） （denoted as NPDA） into ZnAl-layered double hydroxides （LDHs） has been carried out by an anion- exchange method in an effort to improve their thermal stability and light fastness. After intercalation of NPDA anions, the interlayer distance of the LDHs increases from 0.87 to 2.18 nm, confirming their incorporation into the interlayer galleries of the LDHs host. Infrared spectroscopy and thermogravimetric analysis revealed the presence of host-guest interactions between LDHs layers and NPDA anions. The thermal stability of NPDA and ZnAI-NPDA-LDHs was compared by thermogravimetric-differential ther- mal analysis, UV-visible spectroscopy and infrared spectroscopy. It was found that the thermal stability of NPDA anions was markedly improved by incorporation into the ZnA1-LDHs matrix, while the light fastness was also enhanced.