模板法制備一維氧化鋅及圖案化的ABS納米材料
發(fā)布時(shí)間:2018-05-12 20:10
本文選題:氧化鋅 + 納米管; 參考:《青島大學(xué)》2010年碩士論文
【摘要】: 氧化鋅作為一種重要的Ⅱ-Ⅵ族寬禁帶隙半導(dǎo)體材料在光學(xué),光電,傳導(dǎo),傳感以及生物等眾多領(lǐng)域有許多潛在的應(yīng)用。高度有序的氧化鋅納米結(jié)構(gòu)可以制作紫外光電子器件和氣敏傳感器。 模板法具有操作容易,設(shè)備簡單等特點(diǎn),并且可以通過改變模板的孔徑大小和膜厚度來調(diào)節(jié)納米材料的直徑和長度,這就為制備納米器件提供了基礎(chǔ)。本課題采用模板法,通過控制反應(yīng)的化學(xué)環(huán)境,成功的制備了多種形貌的氧化鋅納米材料。采用掃描電子顯微鏡(SEM),透射電子顯微鏡(TEM),紫外可見吸收光譜(UV-VIS),X射線衍射(XRD)和能譜(EDS)對(duì)所得產(chǎn)物進(jìn)行了表征分析。 主要有以下幾方面的工作: 1采用溶膠-凝膠法制備氧化鋅納米顆粒分別以醋酸鋅和氫氧化鋰,醋酸鋅和氫氧化鉀為原料制備了穩(wěn)定的納米溶膠,研究了陳化時(shí)間,燒結(jié)溫度,水分對(duì)氧化鋅納米顆粒直徑和晶型的影響。結(jié)果表明,新制備的氧化鋅納米顆粒粒徑為2-4nm,顆粒分布較窄,隨著陳化時(shí)間的延長,顆粒直徑增大,燒結(jié)溫度越高,氧化鋅晶粒越大,600℃結(jié)后顆粒直徑可達(dá)到200nm,屬于六方晶系纖鋅礦結(jié)構(gòu)。 2通過減壓滲透法在陽極氧化鋁模板(AAO)中制備了氧化鋅納米管陣列,探討了模板透過面,溶解面,燒結(jié)溫度對(duì)納米管形成的影響。燒結(jié)溫度在400℃以上可以得到氧化鋅納米管,600℃時(shí)所得的納米管陣列結(jié)構(gòu)規(guī)整,700℃所得的納米管管口清晰,外徑為250nm左右,壁厚約為30-40nm。 3通過電沉積的方法在陽極氧化鋁模板中制備了氧化鋅納米線陣列,發(fā)現(xiàn)沉積時(shí)間對(duì)納米線的形貌有重要的影響,并通過控制濺射金膜的時(shí)間制備了氧化鋅納米管。采用模板浸潤法制備了圖案化的ABS納米管陣列,可以用來作為鋅納米線同軸納米電纜的包覆層。對(duì)電沉積法制備氧化鋅納米線及納米管形成機(jī)理進(jìn)行了初步探討。
[Abstract]:As an important class II - VI bandgap semiconductor material , zinc oxide has many potential applications in many fields such as optics , photoelectric , conduction , sensing and biology . Highly ordered zinc oxide nanostructures can be used to fabricate UV electronic devices and gas sensors .
The template method has the characteristics of easy operation , simple equipment and the like , and the diameter and the length of the nano material can be adjusted by changing the pore size and the film thickness of the template .
There are mainly the following aspects :
The effects of aging time , sintering temperature and moisture on the diameter and crystal form of zinc oxide nanoparticles were studied by sol - gel method .
A zinc oxide nanotube array was prepared in the anodic aluminum oxide template ( AAO ) by means of a reduced pressure infiltration method . The influence of the surface of the template , the dissolving surface and the sintering temperature on the formation of the nanotubes was discussed . The sintering temperature was 400 鈩,
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