氮化碳奈米管之合成與特性鑑定

Abstract

本研究將分成兩部份，第一部分是在低溫下(623 K)將氫化鈉粉末熱裂解，生成表面積較大的熔融態金屬鈉，使氣態的氰尿醯氯通入與熔融態金屬鈉在623 K反應，生成奈米氮化碳球、奈米孔洞性氮化碳材料及副產物氯化鈉。 第二部份以具有排列整齊的多孔性陽極處理氧化鋁當作反應模板，同樣在623 K 時將氫化鈉熱裂解成熔融態的金屬鈉，並流入模板的孔道中，形成具有化學反應性的模板，之後將氣態的氰尿醯氯通入與金屬鈉在623 K反應，在孔道內形成奈米氮化碳管。以去離子水去除副產物氯化鈉，用48%氫氟酸除去陽極處理氧化鋁模板，即可得到高產率、高含氮量的氮化碳奈米管，直徑為200 – 300 nm，長度為60 μm，壁厚為50 nm。

The thesis are divided into two parts. In the first part, we used 2,4,6-trichloro-1,3,5-triazine as the precursor to react with sodium which have been achieved by decomposing sodium hydrate at 623 K. At a low reaction temperature of 623 K, carbon nitride nanosphere、porous carbon nitride material and byproduct sodium chloride, would be produced. In the second part, we used porous anodic alumina oxide as the template. At 623 K, 2,4,6-trichloro-1,3,5-triazine reacted with the reactive template, which formed from thermally decomposing NaH on AAO, generated carbon nitride nanotube and byproduct sodium chloride inside the template channels. Well-ordered carbon nitride nanotube bundles with a high content of nitrogen were isolated after the sodium chloride and template were removed by deionized water and 48% HF, respectively. The diameter of the carbon nitride nanotubes was 300 nm, the length was 60 μm, and the wall thickness was 50 nm.