材料研究学报  2011, Vol. 25 Issue (2): 183-186

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锡催化生长氧化硅纳米线的制备和表征

倪自丰, 刘利国, 王永光

江南大学机械工程学院 无锡 214122

Synthesis and Characterization of Silica Nanowires Catalysted by Tin

NI Zifeng LIU Liguo WANG Yongguang

School of Mechanical Engineering, Jiangnan University, Wuxi 214122

倪自丰 刘利国 王永光. 锡催化生长氧化硅纳米线的制备和表征[J]. 材料研究学报, 2011, 25(2): 183-186.
, , . Synthesis and Characterization of Silica Nanowires Catalysted by Tin[J]. Chin J Mater Res, 2011, 25(2): 183-186.

摘要 参考文献 相关文章 Metrics 全文: PDF(740 KB)   摘要: 使用高纯SnO2粉和石墨粉混合物作为锡催化剂的来源, 硅片作为硅的来源和产物生长的基底, 用化学气相沉积法在硅片上准备了有序排列的氧化硅纳米线组成的微米结构, 用扫描电子显微镜(SEM)、X--射线能谱仪(EDX)、透射电子显微镜(TEM)和选区电子衍射谱图(SAED)对其进行了表征。结果表明: 直径为5--15 μ m, 长度达到50--100 μm的微米结构由紧密排列的非晶氧化硅纳米线组成, 氧化硅纳米线的直径为100--200 nm, 长度达到50--100 μm。根据对其生长过程的分析, 锡催化生长表现出不同于传统的VLS机制, 一颗锡催化剂液滴能同时诱导多根纳米线的生长。根据室温下的光致发光谱分析, 非晶氧化硅纳米线在395 nm(3.14 eV)处有一强峰, 激发波长为260 nm(4.77 eV)。 关键词 ： 无机非金属材料,  氧化硅纳米线,  化学气相沉积,  碳热还原法,  光致发光     Abstract：A novel micro–structure which consists of highly aligned and closely packed silica nanowires has been synthesized by using chemical vapor deposition (CVD) process. The tin droplets were supplied by carbothermal reduction of SnO2 powders as catalyst, and the source and substrate of the growth of silica nanowires was silicon wafers. This novel micro–structure was investigated by the scanning electron microscopy (SEM), energy–dispersive X–ray spectroscopy (EDX), transmission electron microscopy (TEM) and selected area electron diffraction (SAED) analyses. It was found that the diameters of the novel micro–structures and the amorphous silica nanowires are 5–15 μm and 100–200 nm with the same length of 50–100 μm, respectively. Finally, it is of interest to note that, each tin droplet can simultaneously catalyze the growth of several silica nanowires, which is quite different from the conventional vapor–liquid–solid process, and the silica nanowires tend to grow batch by batch. The PL spectra of the SiO2 nanowires showe a strong light at 395nm (3.14 eV) under excitation at 260 nm (4.77 eV). Key words： inorganic non–metallic materials    silica nanowires    chemical–vapor–deposition (CVD)    carbothermal reduction    photoluminescence 收稿日期: 2010-09-01      ZTFLH:  O469   基金资助: 中央高校基本科研业务费专项资金JUSRP11115资助项目。 服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 倪自丰 刘利国 王永光 44.8K 链接本文: https://www.cjmr.org/CN/      或      https://www.cjmr.org/CN/Y2011/V25/I2/183 1 Z.L.Wang, Z.Dai, S.Sun, Polyhedral Shapes of Cobalt Nanocrystals and Their Effect on Ordered Nanocrystal Assembly. Advanced Materials, 12(24), 1944(2000) 2 S.Bhowmick, K.Alam, Effects of source–drain underlaps on the performance of silicon nanowire on insulator transistors. Nano–Micro Letters, 2(2), 83(2010) 3 D.P.Yu, Q.L.Hang, Y.Ding, H.Z.Zhang, Z.G.Bai, J.J.Wang, Y.H.Zou, W.Qian, G.C.Xiong, S.Q.Feng, Amorphous silica nanowires: Intensive blue light emitters. 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