本文選題：碳納米管陣列　切入點(diǎn)：金屬　出處：《蘇州大學(xué)》2015年碩士論文

【摘要】：碳納米管作為一維碳納米材料,具有十分獨(dú)特的結(jié)構(gòu)與物理化學(xué)性質(zhì)。碳納米管的空腔是具有納米尺寸的一維受限管道,當(dāng)其他分子填充進(jìn)入該空腔后,原有分子的諸多性質(zhì),如電學(xué)性質(zhì),光學(xué)性質(zhì),催化性能等都會(huì)發(fā)生明顯改變。經(jīng)填充修飾后的碳納米管復(fù)合材料在納米運(yùn)輸,納米催化,超級(jí)電容器以及納米傳感器等領(lǐng)域有著廣泛的應(yīng)用前景。然而傳統(tǒng)的填充方法普遍存在填充效率低,在填充過程中無法避免外部包覆,填充過程十分復(fù)雜,需要高溫或超高真空等苛刻條件,同時(shí)易造成碳納米管的破壞等諸多缺點(diǎn)。本課題采用預(yù)先取向排列的碳納米管陣列多孔膜為起始原料,在濃度差的驅(qū)動(dòng)下促使金屬前驅(qū)體溶液(包括氯金酸,硝酸銀和硫酸銅)自發(fā)擴(kuò)散進(jìn)入碳納米管空腔,最后利用電化學(xué)沉積的方法(包括循環(huán)伏安掃描以及恒電位沉積),在碳納米管內(nèi)部成功填充Au,Ag,Cu等貴金屬材料。反應(yīng)產(chǎn)物通過掃描電鏡(SEM),透射電鏡(TEM),高分辨透射電鏡(HRTEM),拉曼光譜(RAMAN),能量色散X射線能譜分析(EDAX),X射線衍射(XRD)等手段進(jìn)行分析表征。結(jié)果表明我們?cè)趦?nèi)徑為15nm的多壁碳納米管內(nèi)部成功填充Au,Ag,Cu三種金屬納米棒,納米棒完全按照碳管的長(zhǎng)軸方向取向生長(zhǎng),同時(shí)發(fā)現(xiàn)其良好的單晶結(jié)構(gòu),充分體現(xiàn)了碳納米管的一維納米模板效應(yīng)。與傳統(tǒng)方法相比,本方法具有操作簡(jiǎn)單,普適性強(qiáng),同時(shí)可以確保電化學(xué)沉積過程完全在碳納米管內(nèi)部發(fā)生,所獲納米晶體晶型可控等優(yōu)點(diǎn),克服了傳統(tǒng)填充方法的一些不足,具有很好的應(yīng)用前景。所制備的貴金屬填充碳納米管陣列復(fù)合薄膜在新型光學(xué)器件,納米傳感器以及納米催化方面具有重要的潛在應(yīng)用。
[Abstract]:As one-dimensional carbon nanotubes, carbon nanotubes have very unique structure and physical and chemical properties. The cavity of carbon nanotubes is a one-dimensional confined pipe with nanometer size. When other molecules are filled into the cavity, there are many properties of the original molecules. For example, electrical properties, optical properties, catalytic properties and so on will be obviously changed. Supercapacitors and nanosensors have a wide range of applications. However, traditional filling methods have low filling efficiency, so it is impossible to avoid the external coating in the filling process, and the filling process is very complex. It needs harsh conditions such as high temperature or ultra-high vacuum, and it is easy to cause the destruction of carbon nanotubes. In this paper, the prealigned porous films of carbon nanotubes arrays are used as the starting materials. Driven by the concentration difference, the metal precursor solution (including chlorgold acid, silver nitrate and copper sulfate) diffuses spontaneously into the carbon nanotube cavity. Finally, the noble metal materials such as Au-Ag-Cu were successfully filled in the carbon nanotubes by electrochemical deposition (including cyclic voltammetry and potentiostatic deposition). The reaction products were prepared by SEM, TEM, TEM, and high resolution TEM. The results show that we have successfully filled three kinds of metal nanorods, Au-Ag-Cu nanorods, in multi-walled carbon nanotubes with the inner diameter of 15nm, by means of X-ray diffraction and energy dispersive X-ray spectroscopy (EDS). The nanorods are grown in accordance with the long axis orientation of carbon tubes, and their good single crystal structure is found, which fully reflects the one-dimensional template effect of carbon nanotubes. Compared with the traditional method, this method has the advantages of simple operation and strong universality. At the same time, the electrochemical deposition process can be ensured to take place completely in the carbon nanotubes, and the nanocrystalline crystal shape can be controlled, which overcomes some shortcomings of the traditional filling method. The prepared carbon nanotube array composite thin films have important potential applications in new optical devices, nano-sensors and nano-catalysis.
【學(xué)位授予單位】：蘇州大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TB383.1

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 蔡道炎;顧家琳;黃正宏;康飛宇;;鎳鈷合金包覆碳納米管復(fù)合材料[J];材料科學(xué)與工程學(xué)報(bào);2007年05期

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本文編號(hào)：1671318