阳极氧化铝模板上热扩散法制备MoO_x纳米阵列  

Synthesis of MoO_x Nano-arrays on Anodic Aluminum Oxide Template by Thermal Diffusion

作　　者：王凡[1] 张玉玲[1] 卫庆硕[1] 吴凯[1] 谢有畅[1] 

机构地区：[1]北京大学化学与分子工程学院物理化学研究所分子动态与稳态结构国家重点实验室,北京100871

出　　处：《物理化学学报》2004年第6期637-641,共5页Acta Physico-Chimica Sinica

基　　金：国家自然科学基金(20125309;90206012);国家重点基础研究发展规划(G2000077503);教育部博士点基金和留学回国人员基金资助项目~~

摘　　要：采用简单的热扩散法,MoO3可在模板纳米孔道内有序生长,经还原后获得MoO2和金属Mo纳米管/线阵列.运用XRD、SEM、TEM、HRTEM等技术对产物进行了表征.结果表明:在70 nm孔径的阳极氧化铝模板上,H2/N2气氛下600℃时的还原产物为单晶MoO2;而在50 nm的模板上,同样条件的还原产物为MoO2微晶聚合体.乙醇的加入能够大大改善产物的形貌.H2气氛,650℃以上温度下进一步还原得到了金属Mo纳米管阵列.MoO2 nano-arrays were simply prepared by reduction of thermally diffused MoO3 on anodic aluminum oxide(AAO) template. The structure and morphology of the nano-arrays were studied by XRD, SEM, TEM and HRTEM. The results showed that, after hydrogenation of the evaporates under 600degreesC in H-2/N-2 mixture, single crystalline MoO2 nanotubes/narowires were produced on 70 nm AAO template, while on 50 nm AAO template yielded was the piling-up Of MoO2 nanocrystallites in nanotubes. Addition of ethanol into the powdered MoO3 precursors greatly improved the morphology of the nanowires. Further reduction Of MoO2 at above 650 degreesC in H-2 led to the production of Me nanotube arrays.

关 键 词：钼 氧化钼 阳极氧化铝 模板 纳米阵列 热扩散 

分 类 号：TB383[一般工业技术—材料科学与工程]