(1. 中南大學(xué) 粉末冶金研究院，長沙 410083；2. 中南大學(xué) 出版社，長沙 410083)
摘 要: 采用金屬催化法結(jié)合化學(xué)氣相沉積法制備一維W納米結(jié)構(gòu)陣列，對一維W納米結(jié)構(gòu)陣列可控制備進(jìn)行系統(tǒng)的研究。結(jié)果表明：一維W納米結(jié)構(gòu)陣列的直徑主要受到催化劑和N2流量的影響，隨著催化劑顆粒尺寸的減小或者N2流量的減小，催化生長后W納米線直徑的尺寸也相應(yīng)變小；一維W納米結(jié)構(gòu)陣列的長度主要受到生長時(shí)間的影響，生長時(shí)間的延長會使W納米線陣列的長度也相應(yīng)的增加，有利于超長W納米線陣列的合成；一維W納米結(jié)構(gòu)陣列的密度主要受到催化劑和WO3粉末粒徑的影響，隨著催化劑顆粒的密度的增加或者WO3粒徑的減小，W納米線陣列的密度也相應(yīng)增加；一維W納米結(jié)構(gòu)陣列的形貌主要受到生長溫度和基片材料的影響。
關(guān)鍵字: 一維納米材料；鎢納米結(jié)構(gòu)；陣列；金屬催化法；氣相沉積法；可控制備
（1. Powder Metallurgy Research Institute, Central South University, Changsha 410083, China;
2. Central South University Press, Changsha 410083, China）
Abstract:One-dimensional tungsten nano-structure arrays were successfully prepared by metal-catalyzed chemical vapor deposition method. Controllable preparation of W nanowire arrays was studied. The results show that the diameter of the W nanowire arrays is mainly decided by the influence of the catalyst and N2 flow. The diameter of the W nanowires correspondingly decreases with the reduction in size of the catalyst particles, or the reduction of the N2 flow rate. The length of the W nanowire arrays is mainly influenced by the growth time. The extension of the growth time will correspondingly increase the length of W nanowire arrays, which is beneficial to synthesis extra long W nanowire arrays. The density of the W nanowire arrays is mainly decided by the influence of the catalyst and N2 flow. The density of the W nanowires correspondingly increases with increasing the density of the catalyst particles or decreasing the WO3 particle size. The morphology of W nanowire arrays is mainly influenced by the growth temperature and the substrate material.
Key words: one-dimensional nano-materials; tungsten nano-structure; array; metal catalyzed method; chemical vapor deposition method; controllable preparation
