靛红-凹凸棒石杂化材料制备

Preparation of Isatin/Palygorskite Hybrid Material

采用固相合成法制备了靛红--凹凸棒石杂化物,考察了制备工艺条件对杂化物性能的影响,分析了靛红--凹凸棒石的杂化机理。结果表明:在杂化过程中,靛红分子的共轭平面发生扭曲、凹凸棒石晶体结构发生了一定程度畸变,但杂化物无新键形成;杂化机理为靛红分子对凹凸棒石表面沟槽结构的深度嵌合和对孔道口的封堵,结合位点靠近铝氧八面体;杂化物可耐三氯甲烷高强度洗脱和30%浓度双氧水氧化,且靛红在杂化物中的热稳定性显著提升。

An isatin/palygorskite hybrid material was synthesized viathe solid state reaction.The corresponding hybrid mechanism was investigated by element analysis,Brunauer-Emmett-Teller specific surface area measurement,thermal gravity-derivative thermal gravity analysis,X-ray diffraction and Fourier transform infrared spectroscopy,respectively.It is indicated that the conjugated plan of isatin is distorted,and the crystal structure of palygorskite has some deformations.It is indicated that the conjugated plan of isatin is distorted,and the crystal structure of palygorskite has some deformations.The results show that isatin molecules insert into the crystal structure of palygorskite,which can endow this isatin/palygorskite hybrid material with the superior stability.