酸性黄25插层水滑石薄膜的制备及其性能研究  

Synthesis and Properties of Acid Yellow 25 Dye-Intercalated Layered Double Hydroxides Film

作　　者：祝海峰[1] 唐平贵[1] 冯拥军[1] 李殿卿[1] 段雪[1] 

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：《无机化学学报》2012年第4期662-668,共7页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.21036001)资助项目

摘　　要：采用原位生长法在铝片基底表面制备了ZnAl-NO3-LDHs水滑石薄膜,以其为前驱体,在弱酸性条件下通过离子交换反应将酸性黄25阴离子插层至ZnAl-LDHs/Al薄膜层间,制备了酸性黄25插层水滑石薄膜,并采用XRD、SEM、FTIR、TG-DTA、UV-Vis和色差计等手段对薄膜进行了表征。XRD和FTIR表征结果表明,酸性黄25阴离子成功地插层到了水滑石薄膜层间,ZnAl-LDHs的层间距由0.87 nm增加到2.96 nm,NO3-阴离子在1 384 cm-1处的特征吸收峰消失,同时出现了酸性黄25阴离子的特征吸收峰。SEM照片显示,水滑石晶片主要以c轴平行于铝片基底生长。TG-DTA分析、UV-Vis分析、色差分析和紫外光老化结果表明,插层后酸性黄25阴离子的耐热性和耐光性均得到了提高。A ZnA1-NO3-LDHs film was fabricated on aluminum by in situ growth method. The Acid Yellow 25 （p -[5-hydroxy-3-methyl-4-[[3-（phenylsulfamoyl）-p-tolyl]azo]-pyrazol-l-yl] benzenesulfonic acid monosodium salt） （denoted as PTAB） anion intercalated LDHs/A1 film was synthesized through ion-exchange method using the ZnA1-NO3-LDHs/AI film as precursor. The prepared film was investigated by powder X-ray diffraction （XRD）, Fourier transform infrared spectroscopy （FTIR）, Scanning electron microscopy （SEM）, Thermogravimetric- differential thermal analysis （TG-DTA）, UV-visible spectroscopy and automatic colorimeter. XRD patterns and FTIR spectra confirm the successful incorporation of PTAB anions into the interlayer galleries of ZnA1-LDHs with an expansion of d-spacing from 0.87 nm to 2.96 nm, the disappearance of characteristic absorption band of NO3- anions at 1 384 cm-~ and the presence of the characteristic absorption of PTAB anions. The SEM morphologies show that the LDHs films are mainly oriented with the c axis of the platelet crystallites parallel to the substrate surface. The TG-DTA analysis, UV-Vis analysis, aberration analysis and photoaging results demonstrate that both the thermal stability and light fastness of PTAB are enhanced after intercalated into ZnA1-LDHs.

关 键 词：水滑石 薄膜 离子交换 热稳定性 耐光性 

分 类 号：O614.241[理学—无机化学] O614.31[理学—化学]