木材结构分级多孔ZnO的同步辐射XAFS研究  

Synchrotron radiation XAFS investigation on wood structure hierarchical porous ZnO

作　　者：朱鹏波[1] 丁剑[1] 郭萃萍[1] 范雪露[1] 刘兆婷[1] 范同祥[1] 张获[1] 郭其新[2] 鎌田雅夫 

机构地区：[1]上海交通大学金属基复合材料国家重点实验室,上海200240 [2]日本佐贺大学同步辐射应用研究中心,佐贺840-8502

出　　处：《功能材料》2011年第3期452-454,458,共4页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(50401005);上海市浦江人才计划资助项目(06PJ14050);青浦-上海交通大学科技合作基金资助项目(QP200801)

摘　　要：利用同步辐射XAFS(X-ray AbsorptionFine Structure)实验及FEFF计算进行数据拟合,研究遗态转化工艺制备的ZnO产物的微观晶体结构参数。研究结果表明,遗态转化工艺得到了ZnO产物,木材结构分级多孔ZnO产物的第一壳层Zn-O距离为0.1986nm,第二壳层Zn-Zn距离为0.3240nm。根据得到的配位壳层Debye-Waller因子较小(ss1=0.00346,ss=0.00780)得出ZnO产物具有较好的有序晶体结构,同时表明在ZnO中,Zn原子第一近邻壳层的O原子有序程度高于其它次近邻壳层原子。The micro-crystal structural parameters of ZnO derived from morph-genetic transformation technology is studied by synchrotron radiation XAFS experiment and the data fitting of FEFF calculation.The results showed that we indeed obtained ZnO product after morph-genetic transformation process,and the Zn-O bonding length of first shell of hierarchical porous ZnO was 0.1986nm,the second shell Zn-Zn bonding length was 0.3240nm.Meanwhile,the ZnO had good ordered crystal structure for the obtained small Debye-Waller factor（ss1=0.00346,ss=0.00780）.At the same time,it showed that the degree of the order of first neighbor O shell of the absorbing Zn atom was higher than that of the secondary nearest neighbor shell.

关 键 词：ZNO 同步辐射 XAFS 

分 类 号：O433.51[机械工程—光学工程]