锌铝水滑石层板与层间离子调变及其光催化性能研究  

Study on the laminates and interlayer ion modulation and photocatalytic properties of ZnAl hydrotalcite

作　　者：樊鑫宇 郭玉华 潘国祥 周梦榆 裘城聪 徐博 徐敏虹 FAN Xin-yu;GUO Yu-hua;PAN Guo-xiang;ZHOU Meng-yu;QIU Cheng-cong;XU Bo;XU Min-hong(Department of Materials Engineering,Huzhou University,Huzhou 313000,China)

机构地区：[1]湖州师范学院材料工程系,浙江湖州313000

出　　处：《化学研究与应用》2023年第11期2759-2764,共6页Chemical Research and Application

基　　金：浙江省自然科学基金(LY21E040001)资助;浙江省尖兵领雁研发攻关计划项目(2023C01112)资助。

摘　　要：采用双滴共沉淀法,结合水滑石层板阳离子和层间阴离子调变,制备十种锌铝水滑石,运用X射线衍射(XRD)、红外光谱(FT-IR)和差热分析(DTA)技术对合成样品的结构进行表征,考察了催化剂种类和用量、光照时间等变量对水滑石光催化降解罗丹明B的影响。研究结果表明,合成产物均具有典型水滑石特征衍射峰,调变阳离子种类合成的六种水滑石中,Zn-Al-Ni-CO_(3)-LDHs的催化效果最好;不同阴离子插层水滑石中,以ZnAl-CO_(3)-LDHs的光催化效果最佳;最佳反应条件为:催化剂用量0.1 g,光照时间65 min,两种水滑石材料光催化降解率可达82%以上。Ten kinds of zinc-aluminum hydrotalcites were prepared by Laminate cation and interlayer anion modulation using double-drop coprecipitation method.The structure of the synthesized samples was characterized by X-ray diffraction(XRD),infrared spec-troscopy(FT-IR)and differential thermal analysis(DTA)techniques.The effects of variables such as the type and dosage of catalyst,and illumination time on the photocatalytic degradation of rhodamine B by hydrotalcite was investigated.The results showed that the synthesized products all have characteristic diffraction peaks of typical hydrotalcite.Among the six hydrotalates synthesized by modi-fied cation species,Zn-Al-Ni-CO_(3)-LDHs had the best catalytic effect.The photocatalytic effect of ZnAl-CO_(3)-LDHs was the best in different anion-intercalated hydrotalcite.The optimal reaction conditions were the catalyst amount of o.1 g,the light time of 65 min,and the photocatalytic degradation rate of the two hydrotalc materials could reach more than 82%.

关 键 词：水滑石 共沉淀 光催化 罗丹明B 

分 类 号：O614.2[理学—无机化学]