Synthesis and field emission of diamond-like carbon nanorods on TiO2/Ti nanotube arrays

Synthesis and field emission of diamond-like carbon nanorods on TiO2/Ti nanotube arrays
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TiO2/Ti 纳米管阵列上类金刚石碳纳米棒的合成及场发射

DOI:
10.1016/j.apsusc.2009.07.049
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发表时间:
2009-10
影响因子:
6.7
通讯作者:
J. Wang
J. Wang
中科院分区:
材料科学1区
文献类型:
--
作者:
C. W. Wang;B. H. Ma;W. M. Liu;J. B. Chen;Y. Li;R. S. Guo;F. Zhou;J. Wang

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在0.5wt%HF溶液中用阳极氧化法制备了高度有序的TiO{sub 2}/Ti纳米管阵列。以制备的TiO{sub 2}/Ti纳米管阵列为基体,采用化学气相沉积法在750 ℃下合成了高质量的类金刚石碳纳米棒(DLCNRs)。C在氮气气氛中。用场发射扫描电镜和拉曼光谱仪对DLCNRs进行了分析。有趣的是,DLCNRs呈宝塔状,长度为3-10 μ m.拉曼光谱在1332 cm{sup-1}和1598 cm{sup-1}处出现两个强峰,表明类金刚石碳的形成。场发射测试结果表明,DLCNRs/TiO 2/Ti具有良好的场发射性能,其开启场强约为3 0 V/μ m,在3 4 mA/cm 2下480 min内无明显衰减。
Highly ordered TiO{sub 2}/Ti nanotube arrays were fabricated by anodic oxidation method in 0.5 wt% HF. Using prepared TiO{sub 2}/Ti nanotube arrays deposited Ni nanoparticles as substrate, high quality diamond-like carbon nanorods (DLCNRs) were synthesized by a conventional method of chemical vapor deposition at 750 deg. C in nitrogen atmosphere. DLCNRs were analyzed by filed emission scanning electron microscopy and Raman spectrometer. It is very interesting that DLCNRs possess pagoda shape with the length of 3-10 {mu}m. Raman spectra show two strong peaks about 1332 cm{sup -1} and 1598 cm{sup -1}, indicating the formation of diamond-like carbon. The field emission measurements suggest that DLCNRs/TiO{sub 2}/Ti has excellent field emission properties, a low turn-on field about 3.0 V/{mu}m, no evident decay at 3.4 mA/cm{sup 2} in 480 min.
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