Layered double hydroxide/polyacrylamide nanocomposite hydrogels: Green preparation, rheology and application in methyl orange removal from aqueous solution
Layered double hydroxide/polyacrylamide nanocomposite hydrogels: Green preparation, rheology and application in methyl orange removal from aqueous solution
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DOI：
10.1016/j.molliq.2019.02.033
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Qingshan Jason Niu
中科院分区：
文献类型：
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作者：
Xiu-Jie Yang;Peng Zhang;Peng Li;Zhongtao Li;Wei Xia;Hongyu Zhang;Zhigang Di;Muli Wang;Hanqing Zhang;Qingshan Jason Niu
Layered double hydroxide (LDH)/polyacrylamide (PAM) nanocomposite (NC) hydrogels were successfully pre-.pared utilizing Co/Al-LDH nanosheet as inorganic crosslinker, acrylamide as monomer via in-situ free radical po-.lymerization at room temperature in water. The Co/Al-LDH used here is freshly prepared Co/Al-LDH solution.with a Tyndall phenomenon, which avoids the exfoliation and dispersion process of LDH using toxic organic sol-.ventormodifiers.Thehydrogelformationmechanismcanbeascribedtothecoordinationandhydrogenbonding.interactionsbetweenhydroxylgroupsonLDHnanosheetandamidegroupsonacrylamide.TheeffectofLDHcon-.tent on viscoelasticpropertieswere studied by rheologymeasurement. The removal of methyl orangeas a probe.dye by Co/Al-LDH/PAM NC hydrogel accords with Langmuir adsorption isotherm and pseudo-second-order.equation.
