酸性橙插层锌铝水滑石的组装及其结构与性能  

Assembly, Structure and Properties of Acid Orange 7-Pillared Zn/Al Hydrotalcite

作　　者：何书珩[1] 蒲敏[1] 李军男[1] 何静[1] EVANS David G. 

机构地区：[1]北京化工大学化工资源有效利用国家重点实验室,北京100029

出　　处：《物理化学学报》2010年第1期259-264,共6页Acta Physico-Chimica Sinica

基　　金：国家自然科学基金(20773009;20531010);国家重点基础研究发展计划项目(973)(2009CB939802);长江学者和创新团队发展计划(IRT0406);高等学校学科创新引智计划(B07004)资助~~

摘　　要：采用共沉淀法合成酸性橙阴离子插层锌铝水滑石(Zn/Al-AO7 LDHs),研究不同pH值及原料金属离子配比对产物结构的影响,利用X射线粉末衍射(XRD),热分析(TG-DTA),傅里叶变换红外(FT-IR)等表征手段,对插层产物的结构进行表征,确定了制备酸性橙插层锌铝水滑石的最适宜条件.用量子化学的B3PW91/6-31G(d,p)方法对Zn/Al-AO7 LDHs模型分子的空间几何构型进行了优化,通过结构组合得到的层间距为2.33 nm,接近XRD测试得到的层间距,从而说明了酸性橙离子在水滑石层板间的排列方式.进一步以甲酰胺为溶剂对水滑石层板进行剥离,得到澄清溶液,根据剥离产物的XRD谱可以确定剥离实验成功.Acid orange 7（AO7）-pillared Zn/Al layered double hydroxides（Zn/Al-AO7 LDHs） were successfully synthesized using the co-precipitation method.In this experiment,synthetic parameters such as the pH value and the ratios of raw materials were varied to study their influences on the structure of Zn/Al-AO7 LDHs.Sample characterization was carried out using X-ray diffraction（XRD）,thermal analysis（TG-DTA）,and Fourier transform infrared（FT-IR） spectroscopy.The molecular geometries of the Zn/Al-AO7 LDHs model were calculated at the B3PW91/6-31G（d,p） level and the gallery heights were 2.33 nm,which agreed well with the experimental results.Formamide was chosen as a solvent for the layered double hydroxide delamination experiment.XRD patterns showed that all the layers had been delaminated.

关 键 词：密度泛函理论 锌铝水滑石 酸性橙 层板剥离 量子化学计算 

分 类 号：O611.3[理学—无机化学]