本文選題：粘膠基活性碳纖維 + 改性��； 參考：《山東大學(xué)》2017年碩士論文

【摘要】：活性碳纖維(Actived carbon fiber,簡稱ACF)是在活性炭技術(shù)和碳纖維技術(shù)相結(jié)合的基礎(chǔ)上發(fā)展起來的新一代高效吸附材料,具有比表面積大、微孔含量大、表面官能團(tuán)豐富等結(jié)構(gòu)特性,吸附能力強(qiáng)。甲醛是一種常見室內(nèi)有機(jī)污染氣體,平面形極性分子,氣態(tài)甲醛分子直徑約為0.45nm。本文以粘膠基活性碳纖維為研究對象,研究了不同方法改性活性碳纖維的結(jié)構(gòu)特征及甲醛吸附性能:采用二次活化工藝、乙二胺接枝處理對活性碳纖維進(jìn)行改性,分別對活性碳纖維甲醛吸附性能的主要影響因素—孔隙結(jié)構(gòu)和表面官能團(tuán)進(jìn)行研究;此外,采用納米二氧化鈦、納米銀進(jìn)行催化劑負(fù)載,制備了同時(shí)具有甲醛凈化能力和抑菌能力的VACF/TiO_2復(fù)合材料和VACF/Ag復(fù)合材料。本文首次提出了功率超聲改進(jìn)的新型二次活化工藝,當(dāng)活化劑采用磷酸、氯化鋅、過氧化氫、硝酸時(shí),新型二次活化工藝可更好的改善VACF表面結(jié)構(gòu)。二次活化后VACF的比表面積、總孔容、微孔孔容均增大,平均孔徑減小,微孔的孔徑分布更為均勻。超聲浸漬為12h時(shí),采用不同活化劑二次活化處理的VACF表面物理結(jié)構(gòu)參數(shù)的大小關(guān)系為:比表面積H-VACFZ-VACFN-VACFP-VACFVACFO,總孔容積 H-VACFZ-VACFP-VACFN-VACFVACFO。VACF二次活化后表面含氧基團(tuán)含量增大,表面含氧基團(tuán)種類主要有羥基、羰基、羧基等,含氧基團(tuán)相對含量大小順序?yàn)?羥基羧基羰基。新型二次活化工藝對VACF的吸附能力具有明顯的提高作用。碘吸附值大小順序?yàn)?P-VACFZ-VACFN-VACFH-VACFVACFO;處理濃度為 1mg/m~3的甲醛氣體時(shí),甲醛凈化率大小順序?yàn)镻-VACFH-VACFZ-VACFN-VACFVACF0,其中磷酸二次活化的VACF甲醛吸附效果最好,甲醛凈化率和平衡時(shí)甲醛吸附量分別為68.93%、5.11mg/m~2。通過乙二胺(EDA)接枝處理VACF的方法制備氨基化粘膠基活性碳纖維VACF-EDAx。VACF-EDAx的甲醛吸附能力隨EDA處理濃度的增大呈現(xiàn)先增大后減小的趨勢,在EDA處理濃度為0.5mol/L時(shí),甲醛凈化率、達(dá)到吸附平衡時(shí)甲醛吸附容量、吸附速度等性能均最佳。單位體積用量為0.14rrm~2/m~3的VACF-EDA0.5處理3mg/m~3濃度的甲醛氣體時(shí),用時(shí)28min即可完成100%甲醛氣體的凈化,實(shí)際甲醛吸附量為22.0mg/m~2。達(dá)到吸附平衡時(shí)甲醛吸附容量的Bolzman擬合預(yù)測值為29.30mg/m~2,Bolzman預(yù)測值相比VACFO的甲醛吸附容量提高了 91.50%。通過紅外光譜和X射線光電子能譜的分析證明了 EDA接枝過程中主反應(yīng)為乙二胺與活性碳纖維的表面羧基反應(yīng)生成酰胺基團(tuán),副反應(yīng)主要是伯胺基或仲胺基的離子化反應(yīng)。噴涂工藝制備的VACF/TiO_2復(fù)合材料、VACF/Ag復(fù)合材料中,VACF的吸附作用能與納米TiO_2、納米Ag的催化作用產(chǎn)生協(xié)同效果,都具備良好的甲醛吸附性能和抑菌性能,其甲醛吸附性能都隨催化劑負(fù)載率的增大呈現(xiàn)先增大后減小的趨勢。VACF/TiO_2復(fù)合材料中VACF-3.57%TiO_2甲醛凈化能力最好,1mg/m~3甲醛濃度下甲醛凈化率為79.61%,達(dá)到吸附平衡時(shí)甲醛吸附量為5.90mg/m~2,對大腸桿菌、金黃色葡萄球菌的抑菌率分別為96%和98%。VACF/Ag復(fù)合材料中VACF-2.38%Ag甲醛凈化能力最好,1mg/m~3甲醛濃度下甲醛凈化率為79.61%,達(dá)到吸附平衡時(shí)甲醛吸附量為5.90mg/m~2,對大腸桿菌、金黃色葡萄球菌的抑菌率均大于99%。
[Abstract]:Actived carbon fiber (ACF) is a new high efficiency adsorption material developed on the basis of the combination of activated carbon technology and carbon fiber technology. It has large specific surface area, large micropore content, rich surface functional groups and so on. It has strong adsorption capacity. Formaldehyde is a common indoor organic pollution gas and plane pole. The molecular diameter of the molecular and gaseous formaldehyde is about 0.45nm.. In this paper, the structure characteristics of the modified activated carbon fibers and the adsorption properties of the modified activated carbon fibers are studied in this paper. The adsorption properties of active carbon fibers are modified by the two activation process. The main influencing factors, pore structure and surface functional group, are studied. In addition, nano titanium dioxide and nano silver are used to load the catalyst, and the VACF/TiO_2 composites and VACF/Ag composites with the ability to purify the formaldehyde and the bacteriostasis are prepared. In this paper, a new two activation process, which is improved by power ultrasound, is first proposed. When the activator uses phosphoric acid, zinc chloride, hydrogen peroxide and nitric acid, the new two activation process can better improve the surface structure of VACF. After two activation, the specific surface area, the total pore volume, the pore volume of the micropore are increased, the average pore size decreases and the pore size distribution is even more uniform. When the hyper acoustic impregnation is 12h, the V of two activation treatments of different activators is used. The relation between the physical structure parameters of ACF surface is as follows: the specific surface area H-VACFZ-VACFN-VACFP-VACFVACFO, the total pore volume H-VACFZ-VACFP-VACFN-VACFVACFO.VACF two times the oxygen group content increases, the species of oxygen group on the surface are mainly hydroxyl, carbonyl, carboxyl group, and the order of oxygen group relative content is the hydroxyl carboxyl group. The new two activation process has obviously improved the adsorption capacity of VACF. The order of iodine adsorption value is P-VACFZ-VACFN-VACFH-VACFVACFO. When the formaldehyde gas is 1mg/m~3, the order of formaldehyde purification rate is P-VACFH-VACFZ-VACFN-VACFVACF0, and the two activated VACF formaldehyde adsorption effect is the best, and the formaldehyde is net. The adsorption capacity of formaldehyde at the rate and balance was 68.93%, respectively, and 5.11mg/m~2. was prepared by grafting ethylene diamine (EDA) to VACF to prepare the formaldehyde adsorption capacity of the aminated viscose based active carbon fiber (VACF-EDAx.VACF-EDAx), which increased first and then decreased with the increase of EDA concentration. When the concentration of EDA was 0.5mol/L, the formaldehyde purification rate was reached. The adsorption capacity and the adsorption rate are the best when the adsorption equilibrium is balanced. When the unit volume is 0.14rrm~2/m~3 VACF-EDA0.5 for the 3mg/m~3 concentration of formaldehyde gas, the 100% formaldehyde gas can be purified by 28min. The actual formaldehyde adsorption capacity is 22.0mg/m~2. to the Bolzman fitting prediction of the adsorption capacity of the formaldehyde. The value of Bolzman is 29.30mg/m~2, compared with VACFO, the adsorption capacity of formaldehyde is increased by 91.50%. through the analysis of IR and X ray photoelectron spectroscopy. It is proved that the main reaction in the EDA grafting process is the reaction of ethylenediamine and the carboxyl group of active carbon fiber to produce amide groups, and the secondary reactions are mainly ionized reactions of primary amine or secondary amines. In the VACF/TiO_2 composites and VACF/Ag composites prepared by spraying process, the adsorption of VACF can produce synergistic effect with the catalysis of nano TiO_2 and nanoscale Ag. All of them have good formaldehyde adsorption and bacteriostasis performance. The adsorption properties of formaldehyde all increase first and then decrease with the increase of the catalyst load rate. The purification ability of VACF-3.57%TiO_2 formaldehyde in the composite was the best. The formaldehyde purification rate was 79.61% under the concentration of 1mg/m~3 formaldehyde. The adsorption amount of formaldehyde was 5.90mg/m~2 when the adsorption equilibrium was reached. The bacteriostasis rate of Escherichia coli and Staphylococcus aureus was 96% and the VACF-2.38%Ag formaldehyde in the 98%.VACF/Ag composite material was the best, and the 1mg/m~3 formaldehyde concentration was the best. The removal rate of formaldehyde was 79.61%, the adsorption capacity of formaldehyde reached 5.90mg/m~2 when the adsorption equilibrium was reached, and the inhibition rates to Escherichia coli and Staphylococcus aureus were greater than 99%.
【學(xué)位授予單位】：山東大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TQ424

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 高首山,鄧景屹,劉文川;活性碳纖維的化學(xué)改性[J];鞍山鋼鐵學(xué)院學(xué)報(bào);2000年06期

2 高強(qiáng);活性碳纖維的性能特點(diǎn)及其在汽車中的應(yīng)用[J];產(chǎn)業(yè)用紡織品;2000年08期

3 ;可防毒氣和細(xì)菌的活性碳纖維[J];國外紡織技術(shù);2000年07期

4 陳東生,敖玉輝,李永貴,李全明;活性碳纖維的研究與應(yīng)用[J];化工新型材料;2000年08期

5 黃漢生;低成本活性碳纖維新制法[J];化工新型材料;2000年10期

6 ;水蒸汽保護(hù)法制備活性碳纖維[J];今日科技;2000年11期

7 ;臺灣研發(fā)殺菌效果百分之百的活性碳纖維[J];化工學(xué)報(bào);2003年06期

8 付正芳,王慶瑞,王曙中;中空活性碳纖維概述[J];高科技纖維與應(yīng)用;2003年05期

9 宋曉峰,甘應(yīng)進(jìn),陳東生;活性碳纖維制品的研究與應(yīng)用[J];化工新型材料;2004年03期

10 王茂章;;活性碳纖維[J];合成纖維工業(yè);1979年03期

相關(guān)會(huì)議論文 前10條

1 李全明;張梅;邱發(fā)貴;張萬喜;;中孔活性碳纖維的制備及性能研究[A];第六屆中國功能材料及其應(yīng)用學(xué)術(shù)會(huì)議論文集（7）[C];2007年

2 ;含納米銀顆�？咕钚蕴祭w維的制備方法[A];廣東省材料研究學(xué)會(huì)部分單位會(huì)員成果匯編[C];2005年

3 劉漢杰;;活性碳纖維凈化有機(jī)尾氣回收有機(jī)溶劑技術(shù)[A];第二屆綠色農(nóng)藥論壇論文集[C];2004年

4 葛勇德;;活性碳纖維在環(huán)境保護(hù)中的應(yīng)用研究[A];面向21世紀(jì)的科技進(jìn)步與社會(huì)經(jīng)濟(jì)發(fā)展（上冊）[C];1999年

5 楊驥;賈金平;;活性碳纖維在環(huán)境保護(hù)中的應(yīng)用探索[A];第三屆全國環(huán)境化學(xué)學(xué)術(shù)大會(huì)論文集[C];2005年

6 趙東林;李巖;李興國;沈曾民;;瀝青基活性碳纖維的微觀結(jié)構(gòu)及其儲(chǔ)氫性能研究[A];第六屆中國功能材料及其應(yīng)用學(xué)術(shù)會(huì)議論文集（4）[C];2007年

7 許愛琴;秦振春;;活性碳纖維改性技術(shù)在改善室內(nèi)空氣質(zhì)量方面的應(yīng)用[A];全國暖通空調(diào)制冷2006學(xué)術(shù)年會(huì)資料集[C];2006年

8 吳琪琳;顧書英;張志海;潘鼎;;試制一種表面富含大孔的新型粘膠基活性碳纖維[A];第五屆中國功能材料及其應(yīng)用學(xué)術(shù)會(huì)議論文集Ⅲ[C];2004年

9 李石;鄭經(jīng)堂;趙玉翠;;活性炭纖維基礎(chǔ)理論進(jìn)展評述[A];2007高技術(shù)新材料產(chǎn)業(yè)發(fā)展研討會(huì)暨《材料導(dǎo)報(bào)》編委會(huì)年會(huì)論文集[C];2007年

10 劉漢杰;;活性碳纖維有機(jī)尾氣凈化回收技術(shù)[A];2007年全國醫(yī)藥工業(yè)技術(shù)工作年會(huì)暨科技創(chuàng)新發(fā)展交流研討會(huì)專輯[C];2007年

相關(guān)重要報(bào)紙文章 前4條

1 新言;新型活性碳纖維殺菌效果神奇[N];中國化工報(bào);2003年

2 ;德國公司研制新型活性碳纖維[N];今日信息報(bào);2003年

3 葛;德國Kynol公司研制新型活性碳纖維[N];中國紡織報(bào);2003年

4 馬東;俄羅斯研究導(dǎo)電碳纖維吸附劑[N];中國建材報(bào);2009年

相關(guān)博士學(xué)位論文 前3條

1 李全明;活性碳纖維的制備及性能研究[D];吉林大學(xué);2010年

2 余陽;新型微孔吸附劑—超細(xì)活性碳纖維的制備及其室內(nèi)甲醛吸附行為研究[D];東華大學(xué);2011年

3 曾凡龍;粘膠活性碳纖維分子和孔結(jié)構(gòu)轉(zhuǎn)變及功能性應(yīng)用研究[D];東華大學(xué);2008年

相關(guān)碩士學(xué)位論文 前10條

1 陳秋飛;活性碳纖維的制備及其應(yīng)用[D];北京化工大學(xué);2008年

2 李中振;改性活性碳纖維處理低濃度氨氮廢水研究[D];北京化工大學(xué);2015年

3 姜林妤;高比表面積活性碳材料的制備及其吸附處理VOCs的研究[D];清華大學(xué);2015年

4 苗朋;高性能PAN基活性碳纖維制備的關(guān)聯(lián)性研究[D];北京化工大學(xué);2016年

5 李圣標(biāo);活性碳纖維的低成本制備及其在染料污水凈化中的應(yīng)用[D];安徽工業(yè)大學(xué);2016年

6 蔣正江;鋅改性聚丙烯腈制成活性碳纖維對廢水中Cr(Ⅵ)吸附的研究[D];湖南大學(xué);2015年

7 唐心紅;木質(zhì)素基活性碳纖維的制備及其吸附性能的研究[D];東南大學(xué);2016年

8 胡慧君;酸性條件下微波改性活性碳纖維的制備及其對Pb(Ⅱ)的吸附研究[D];湖南大學(xué);2015年

9 方元;活性碳纖維負(fù)載鐵酞菁的制備及催化性能的研究[D];浙江理工大學(xué);2017年

10 虞軍偉;活性碳纖維改性及其甲醛吸附特性研究[D];山東大學(xué);2017年

，

本文編號：1938535