發(fā)布時(shí)間：2018-01-16 04:23

  本文關(guān)鍵詞：新型POSS基雜化材料的制備及BPA吸附性能研究　出處：《江蘇大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 雙酚A 吸附性能 籠型倍半硅氧烷 有機(jī)-無機(jī)雜化 分子印跡 碳納米管 聚合離子液體

【摘要】：BPA是典型的內(nèi)分泌干擾物,因大量生產(chǎn)與廣泛使用已對(duì)水環(huán)境造成嚴(yán)重污染,所以對(duì)其污染的治理已引起人們的關(guān)注。吸附法因具有成本低廉、操作簡(jiǎn)便、吸附效率高、二次污染風(fēng)險(xiǎn)小等優(yōu)勢(shì),已成為應(yīng)用最廣的BPA處理方法之一。因此,研究設(shè)計(jì)新型高性能吸附材料已成為該領(lǐng)域的研究熱點(diǎn)。POSS基納米雜化材料通常具有較大的比表面積、優(yōu)良的熱穩(wěn)定性和化學(xué)穩(wěn)定性、環(huán)境友好、易于剪裁等特點(diǎn),可作為潛在的理想吸附材料。因此,本論文利用具有分子水平雜化結(jié)構(gòu)的POSS納米顆粒,制備得到一系列POSS基有機(jī)-無機(jī)雜化材料,并考察其對(duì)BPA的吸附性能,主要包括以下內(nèi)容:1.以不同比例的乙二醇二甲基丙烯酸酯(EGDMA)、八乙烯基籠型倍半硅氧烷(OV-POSS)為共交聯(lián)劑,分別以丙烯酰胺(AM)、甲基丙烯酸(MAA)為功能單體,以BPA為模板分子,采用自由基聚合法制備POSS基印跡雜化材料。利用紅外(FT-IR)、掃描電鏡(SEM)、熱失重(TGA)對(duì)其結(jié)構(gòu)進(jìn)行表征,證實(shí)POSS成功引入到聚合物中,且POSS的引入提高了聚合物基體的熱穩(wěn)定性。通過吸附動(dòng)力學(xué)、靜態(tài)吸附及選擇性吸附表明:POSS的引入可以改善聚合物基體的吸附速率及容量,分別以1-M-A(POSS用量為5%,AM為功能單體)和5-M-M(POSS用量為5%,MAA為功能單體)為最好,30min內(nèi)對(duì)BPA的去除率分別達(dá)95%、96%,且對(duì)BPA的識(shí)別能力明顯高于其結(jié)構(gòu)類似物。經(jīng)Scatchard分析,材料1-M-A對(duì)BPA存在兩種不同作用的識(shí)別位點(diǎn),最大表觀吸附容量分別為240.35μmol/g和440.08μmol/g。2.以碳納米管為基材,通過酸化和酰胺化在其表面引入雙鍵,然后與OV-POSS進(jìn)行表面聚合,得到OV-POSS/MWCNTs雜化材料。利用FT-IR對(duì)其性能進(jìn)行表征,證實(shí)POSS成功嫁接到CNTs表面。通過吸附動(dòng)力學(xué)和靜態(tài)吸附對(duì)其吸附性能進(jìn)行評(píng)價(jià),OV-POSS/MWCNTs在30 min內(nèi),對(duì)BPA的去除率已達(dá)97.5%,且吸附過程符合二級(jí)動(dòng)力學(xué)模型。在吸附過程中,外部擴(kuò)散為主要的控速步驟。3.以八氯丙基POSS和二聯(lián)咪唑?yàn)殛P(guān)鍵中間體,經(jīng)過季銨化反應(yīng),制備得到兩種POSS基聚合離子液體,E-POSS-PIL和A-POSS-PIL。利用FT-IR、SEM、TGA對(duì)其性能進(jìn)行表征,E-POSS-PIL為多面體結(jié)構(gòu),A-POSS-PIL為球型結(jié)構(gòu)。并初步研究了E-POSS-PIL和A-POSS-PIL對(duì)BPA的吸附性能,結(jié)果表明E-POSS-PIL對(duì)BPA具有更高的吸附容量。
[Abstract]:BPA is a typical endocrine disrupting substance, because mass production and extensive use have caused serious pollution to the water environment, so the treatment of its pollution has attracted people's attention. Because of its low cost and simple operation, adsorption method is easy to operate. The advantages of high adsorption efficiency and low secondary pollution risk have become one of the most widely used BPA treatment methods. Research and design of novel high-performance adsorption materials has become a research hotspot in this field. Poss based nano-hybrid materials usually have a large specific surface area, excellent thermal and chemical stability, environmentally friendly. Therefore, POSS nanoparticles with molecular level hybrid structure are used in this paper. A series of organic-inorganic hybrid materials based on POSS were prepared and their adsorption properties for BPA were investigated. The main contents are as follows: 1. Using different proportion of ethylene glycol dimethacrylate (EGDMAA) and octavinylcage-type silsesquioxane (OV-POSS) as co-crosslinking agent. Acrylamide (AM) and methacrylate (MAA) were used as functional monomers and BPA as template molecules respectively. The POSS based imprinted hybrid materials were prepared by free radical polymerization and their structures were characterized by FTIR, SEM and TGA. It was proved that POSS was successfully introduced into the polymer, and the thermal stability of the polymer matrix was improved by the introduction of POSS. The static adsorption and selective adsorption showed that the adsorption rate and capacity of the polymer matrix were improved by the introduction of 1: poss, with the dosage of 1-M-APOSS being 5%, respectively. The removal rates of BPA were 95% and 96% respectively in 30 minutes. The recognition ability of BPA was significantly higher than that of its structural analogues. By Scatchard analysis, there were two different recognition sites for BPA by 1-M-A. The maximum apparent adsorption capacities were 240.35 渭 mol/g and 440.08 渭 mol / g 路2, respectively. Carbon nanotubes were used as substrates and double bonds were introduced on the surface of carbon nanotubes by acidification and amidation. OV-POSS/MWCNTs hybrid materials were obtained by surface polymerization with OV-POSS and their properties were characterized by FT-IR. It was confirmed that POSS was grafted onto the surface of CNTs successfully. The adsorption performance of OV-POSS / MWCNTs was evaluated in 30 min by adsorption kinetics and static adsorption. The removal rate of BPA has reached 97.5%, and the adsorption process accords with the second-order kinetic model. Using octachloropropyl POSS and diimidazole as the key intermediates, two kinds of POSS based polymeric ionic liquids were prepared by quaternary ammonium reaction. E-POSS-PIL and A-POSS-PIL. the properties of E-POSS-PIL were characterized by FT-IRSS-SEMGA-TGA. The structure of E-POSS-PIL was polyhedron. The adsorption properties of E-POSS-PIL and A-POSS-PIL for BPA were studied. The results show that E-POSS-PIL has higher adsorption capacity for BPA.
【學(xué)位授予單位】：江蘇大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：X703

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 許新新;何麗君;蔡天培;游利琴;向國強(qiáng);趙文杰;江秀明;;聚合離子液體固載石墨烯復(fù)合物的制備及固相萃取有機(jī)磷農(nóng)藥的研究[J];分析化學(xué);2015年06期

2 趙冬梅;李振偉;劉領(lǐng)弟;張艷紅;任德財(cái);李堅(jiān);;石墨烯/碳納米管復(fù)合材料的制備及應(yīng)用進(jìn)展[J];化學(xué)學(xué)報(bào);2014年02期

3 劉慧慧;徐英江;鄧旭修;宮向紅;宋秀凱;李凡;張煥君;田秀慧;張秀珍;;萊州灣海域雙酚A污染現(xiàn)狀調(diào)查[J];漁業(yè)科學(xué)進(jìn)展;2013年04期

4 劉劍洪;吳雙泉;何傳新;卓海濤;朱才鎮(zhèn);李翠華;張黔玲;;碳納米管和碳微米管的結(jié)構(gòu)、性質(zhì)及其應(yīng)用[J];深圳大學(xué)學(xué)報(bào)(理工版);2013年01期

5 馬希璐;曲榮君;孫昌梅;紀(jì)春暖;;硅膠基吸附材料的合成方法[J];魯東大學(xué)學(xué)報(bào)(自然科學(xué)版);2013年01期

6 張晏晏;高乃云;高玉瓊;戎文磊;周圣東;陸納新;;高級(jí)氧化技術(shù)去除水中雙酚A研究進(jìn)展[J];水處理技術(shù);2012年08期

7 張照韓;馮玉杰;高鵬;孫清芳;任南琪;;松花江水內(nèi)分泌干擾物及雌激素活性調(diào)查[J];哈爾濱工業(yè)大學(xué)學(xué)報(bào);2011年12期

8 楊飛;喻澤斌;黃俊;;水體中典型環(huán)境激素處理技術(shù)比較[J];水處理技術(shù);2011年01期

9 張鎖江;姚曉倩;劉曉敏;王金泉;;離子液體構(gòu)效關(guān)系及應(yīng)用[J];化學(xué)進(jìn)展;2009年11期

10 婁忠良;孟子暉;王鵬;孟文君;;分子印跡技術(shù)用于模擬酶及分子反應(yīng)器的研究進(jìn)展[J];有機(jī)化學(xué);2009年11期

相關(guān)會(huì)議論文 前1條

1 張存良;;淮南市平山頭水廠水源水中壬基酚、雙酚A污染情況研究[A];2014中國環(huán)境科學(xué)學(xué)會(huì)學(xué)術(shù)年會(huì)（第四章）[C];2014年

，

本文編號(hào)：1431541