本文關(guān)鍵詞：多壁碳納米管表面苯酚印跡聚合物的合成及性能研究　出處：《太原理工大學(xué)》2016年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 苯酚 多壁碳納米管 分子印跡 固相萃取

【摘要】：分子印跡技術(shù)合成的聚合物具有預(yù)構(gòu)定型特異識(shí)別性以及實(shí)用性,受到科研工作者的廣泛關(guān)注。由于傳統(tǒng)的聚合方法具有很多缺點(diǎn),費(fèi)時(shí)費(fèi)力產(chǎn)率低,合成出的聚合物交聯(lián)度較高,模板分子被牢固的固定在內(nèi)部,很難被完全洗脫。此外,印跡位點(diǎn)包埋過(guò)深導(dǎo)致吸附平衡時(shí)間較長(zhǎng),使其應(yīng)用受到限制。而多壁碳納米管是一種具有高比表面積和高反應(yīng)活性的納米材料,具有很多優(yōu)良特性,使它可以作為分子印跡聚合物的載體材料。為了彌補(bǔ)傳統(tǒng)聚合方法的缺點(diǎn),利用多壁碳納米管的優(yōu)異性能,提出了基于多壁碳納米管表面新型分子印跡材料,這種印跡材料中的分子識(shí)別位點(diǎn)分布在印跡材料的表面,可以使印跡識(shí)別位點(diǎn)與模板分子快速結(jié)合,能顯著改善在介質(zhì)中對(duì)特定化合物的可接近性,使得多壁碳納米管表面分子印跡材料在痕量物質(zhì)富集領(lǐng)域中顯示出廣闊的應(yīng)用前景。本論文具體研究?jī)?nèi)容如下:(1)以苯酚為模板分子,采用沉淀聚合法在碳納米管表面制備了多壁碳納米管表面苯酚印跡材料。優(yōu)化多壁碳納米管表面苯酚印跡材料的制備條件和吸附條件;用掃描電鏡和紅外光譜表征該苯酚印跡材料的形貌特征;采用紫外分光光度法考查該印跡材料對(duì)苯酚的動(dòng)態(tài)吸附和等溫吸附,并且進(jìn)行斯卡查德(Scatchard)模型分析;通過(guò)對(duì)苯酚類似物的吸附測(cè)定印跡材料的特異性吸附性能。結(jié)果顯示印跡材料對(duì)苯酚的最大吸附量達(dá)到25.50mg/g;當(dāng)動(dòng)態(tài)吸附90 min時(shí),吸附量達(dá)到了最大吸附量的90%以上,吸附接近平衡,實(shí)現(xiàn)了快速吸附的目的。印跡因子最大達(dá)到3.64,選擇因子最大為2.78,說(shuō)明了該印跡材料具有較好的特異性和選擇性吸附性能。(2)以二氧化硅改性的多壁碳納米管為基體,氨丙基三乙氧基硅烷為功能單體,正硅酸乙酯為交聯(lián)劑,采用溶膠-凝膠法制備二氧化硅修飾的多壁碳納米管表面苯酚印跡材料。對(duì)該印跡聚合材料的結(jié)構(gòu)和形貌進(jìn)行表征,并對(duì)苯酚的動(dòng)力學(xué)吸附、等溫吸附及特異性吸附等性能進(jìn)行了測(cè)定。實(shí)驗(yàn)結(jié)果顯示,多壁碳納米管表面成功的合成了苯酚印跡層,制備得到苯酚印跡材料。此印跡材料對(duì)模板分子最大表觀結(jié)合量為19.90 mg/g,只有一種結(jié)合位點(diǎn),印跡因子最大達(dá)到3.48,選擇性因子最大為3.44,該印跡材料在120 min達(dá)到動(dòng)態(tài)吸附平衡。因此證明該印跡材料具有大量的印跡位點(diǎn)和良好的吸附能力。(3)把已制備好的苯酚印跡材料裝入固相萃取小柱,對(duì)化妝品中的苯酚進(jìn)行富集分離,結(jié)合高效液相色譜法進(jìn)行測(cè)定。實(shí)驗(yàn)結(jié)果表明,此固相萃取柱可以很好的富集分離化妝品中的苯酚。
[Abstract]:Molecular imprinting technology synthetic polymers with prefabricated stereotypes? Specific recognition and practicability, is widely concerned by researchers. Because the traditional polymerization method has many shortcomings, time-consuming and laborious?? low yield, the synthesized polymer crosslinking degree, molecular template is firmly fixed in the interior, it is difficult to be completely eluted. In addition, imprinted sites are embedded too deep lead to longer adsorption equilibrium, which limits its applications. And multi walled carbon nanotubes is a kind of nano material with high specific surface area and high activity, has many excellent characteristics, so that it can be used as carrier material of molecularly imprinted polymer. In order to make up for the traditional polymerization method disadvantages of using excellent properties of multi walled carbon nanotubes, put forward multi walled carbon nanotube surface molecularly imprinted materials based on the imprinted materials in molecular recognition sites in imprinted material The surface of the material, can make imprinted recognition sites and template molecule rapid combination can significantly improve in the medium for compound specific accessibility, making multi walled carbon nanotube surface molecular imprinting materials show broad application prospects in the field of enrichment of trace substances. The specific contents are as follows: (1) from phenol the template molecule was prepared by polymerization of multi walled carbon nanotube surface phenol imprinted material on the surface of carbon nanotubes. Preparation of precipitated conditions and adsorption conditions of preparation and optimization of multi walled carbon nanotube surface with phenol imprinted materials; morphology scanning electron microscopy and infrared spectroscopy characterization of the phenol imprinted material; UV on phenol adsorption and dynamic isothermal adsorption spectrophotometric method to examine the imprinted material, and Scatcherd (Scatchard) model; through the specific adsorption of phenol analogues of the determination of imprinted material absorption Report of performance. The results show that the maximum adsorption capacity of phenol imprinted material reached 25.50mg/g; when the dynamic adsorption of 90 min, the adsorption capacity reached more than 90% of the maximum adsorption capacity, adsorption close to balance, to achieve a rapid adsorption. The imprinting factor selection factor achieves 3.64, a maximum of 2.78, shows that the imprinted material has specific and the selective adsorption performance. (2) with multi walled carbon nanotubes modified silica matrix aminopropyltriethoxysilane as functional monomer, TEOS as crosslinking agent, multi walled carbon nanotube surface imprinted material for preparing two phenol oxidation silicon modified by sol-gel method. The the imprinted polymer structure and morphology of the materials were characterized, and the kinetics of the adsorption of phenol, isothermal adsorption and specific adsorption properties were determined. The experimental results show that the surface of multi walled carbon nanotubes synthesized by benzene The imprinted layer was prepared by phenol, phenol imprinted material. The imprinted material of the template molecule apparent maximum binding capacity of 19.90 mg/g, only one binding site, imprinted factor reached 3.48, the selectivity is 3.44, the polymer can reach dynamic adsorption equilibrium at 120 min. This proves that the imprinted material has imprinted sites and a lot of good adsorption ability. (3) have been prepared into solid phase extraction column of phenol imprinted materials prepared, for phenol in cosmetics for separation and enrichment, combined with high performance liquid chromatography. The experimental results show that the solid phase extraction column can enrichment and separation of phenol in cosmetics as well.

【學(xué)位授予單位】：太原理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：O631.3

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 蔡亞岐,牟世芬;分子印跡固相萃取及其應(yīng)用[J];分析測(cè)試學(xué)報(bào);2005年05期

2 朱秀芳,侯能邦,汪國(guó)松,王穎臻,曹秋娥,丁中濤;非共價(jià)分子印跡體系的快速篩選方法[J];云南化工;2005年01期

3 閆長(zhǎng)領(lǐng);盧雁;;核-殼結(jié)構(gòu)蛋白分子印跡微球的制備及性能研究[J];河南師范大學(xué)學(xué)報(bào)(自然科學(xué)版);2006年04期

4 王學(xué)軍;許振良;邴乃慈;;分子印跡的印跡效率及其評(píng)價(jià)[J];化學(xué)世界;2007年04期

5 仰云峰;車愛馥;吳健;徐志康;;表面分子印跡研究進(jìn)展[J];化學(xué)通報(bào);2007年05期

6 劉偉;王兵;;氟哌酸分子印跡共混膜的制備及結(jié)構(gòu)表征[J];離子交換與吸附;2009年01期

7 李琰;;量子點(diǎn)表面分子印跡的研究與進(jìn)展[J];實(shí)驗(yàn)室科學(xué);2009年02期

8 黃健祥;胡玉斐;潘加亮;許志剛;李攻科;;分子印跡樣品前處理技術(shù)的研究進(jìn)展[J];中國(guó)科學(xué)(B輯:化學(xué));2009年08期

9 王斌;王榕妹;王俊卿;鄧安平;;分子印跡材料研究進(jìn)展[J];化學(xué)研究與應(yīng)用;2010年02期

10 王紅飛;張黎明;;多糖基分子印跡功能材料[J];化學(xué)進(jìn)展;2010年11期

相關(guān)會(huì)議論文 前10條

1 鄭海富;杜學(xué)忠;;含糖配體二元單層膜增強(qiáng)靶向蛋白識(shí)別及其生物傳感:表面分子印跡[A];中國(guó)化學(xué)會(huì)第十二屆膠體與界面化學(xué)會(huì)議論文摘要集[C];2009年

2 湯又文;黃招發(fā);楊挺;;利用分子印跡固相萃取測(cè)定人血清中的頭孢硫脒[A];大環(huán)化學(xué)和超分子化學(xué)研究進(jìn)展——中國(guó)化學(xué)會(huì)全國(guó)第十二屆大環(huán)第四屆超分子化學(xué)學(xué)術(shù)討論會(huì)論文集[C];2004年

3 董文國(guó);閆明;吳國(guó)是;劉錚;;溶劑對(duì)分子印跡介質(zhì)吸附特性的影響:分子模擬與實(shí)驗(yàn)研究[A];第一屆全國(guó)化學(xué)工程與生物化工年會(huì)論文摘要集(上)[C];2004年

4 蘇海佳;譚天偉;;菌絲體表面分子印跡吸附劑紅外譜圖的研究[A];第一屆全國(guó)化學(xué)工程與生物化工年會(huì)論文摘要集(下)[C];2004年

5 劉俊秋;羅貴民;沈家驄;;設(shè)計(jì)高效分子印跡人工酶[A];2005年全國(guó)高分子學(xué)術(shù)論文報(bào)告會(huì)論文摘要集[C];2005年

6 伍智仲;梁堅(jiān);丁學(xué)全;潘勇;王艷武;趙建軍;劉衛(wèi)衛(wèi);;單[6-脫氧(1,10癸二硫醇)巰基]β-環(huán)糊精的分子印跡及應(yīng)用研究[A];中國(guó)化學(xué)會(huì)第二十五屆學(xué)術(shù)年會(huì)論文摘要集（下冊(cè)）[C];2006年

7 周靖;侯建國(guó);周漢坤;干寧;;基于磁性分子印跡的電化學(xué)發(fā)光免疫分析法檢測(cè)艾滋病毒[A];中國(guó)化學(xué)會(huì)第28屆學(xué)術(shù)年會(huì)第9分會(huì)場(chǎng)摘要集[C];2012年

8 陳志勇;;輔助模板法合成均勻分子印跡納米顆粒[A];中國(guó)化學(xué)會(huì)第28屆學(xué)術(shù)年會(huì)第9分會(huì)場(chǎng)摘要集[C];2012年

9 許秀竹;陳水挾;;羅丹明B分子印跡纖維的制備及其選擇性吸附研究[A];熱烈慶祝中國(guó)化學(xué)會(huì)成立80周年——中國(guó)化學(xué)會(huì)第16屆反應(yīng)性高分子學(xué)術(shù)研討會(huì)論文集[C];2012年

10 卜忐忐;田園;單慧燕;胡碧煒;何娟;;氧氟沙星分子印跡固相微萃取的研制及其性能研究[A];河南省化學(xué)會(huì)2012年學(xué)術(shù)年會(huì)論文摘要集[C];2012年

相關(guān)重要報(bào)紙文章 前1條

1 經(jīng)濟(jì)報(bào)記者 侯力明 通訊員 張明平;“分子印跡”期待叩響產(chǎn)業(yè)化“大門”[N];江蘇經(jīng)濟(jì)報(bào);2014年

相關(guān)博士學(xué)位論文 前10條

1 李會(huì)香;分子印跡與納米修飾技術(shù)在生物、藥物分子識(shí)別與檢測(cè)中的應(yīng)用基礎(chǔ)研究[D];復(fù)旦大學(xué);2013年

2 趙s钅，

本文編號(hào)：1396118