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OALib Journal期刊
ISSN: 2333-9721
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阳极氧化tio2纳米管阵列的制备及场发射性能*
Keywords: 无机非金属材料,tio2纳米管阵列,阳极氧化,ph值,xps,场发射
Abstract:
？采用阳极氧化法以hf水溶液为电解液制备二氧化钛(tio2)纳米管阵列,用场致发射扫描电子显微镜和x射线光电子能谱对纳米管阵列的表面形貌、断面结构及元素组成进行表征,并使用场发射测试系统测试其场发射性能,研究了hf水溶液的ph值对tio2纳米管阵列形貌(管径及管长)的影响。结果表明:调节电解液的ph值可改变tio2纳米管阵列的形貌,从而提高其场发射性能。当电解液ph值为2.0时tio2纳米管阵列的场发射开启场强降为2.52v/μm,且具有较好的电流稳定性。
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