本文主要研究内容
作者王贝寒（2019）在《硅藻土基碳纳米管复合吸附材料的制备及其吸附性能的研究》一文中研究指出：随着国内工业的快速发展,工业废水肆意排放成了普遍存在的问题,越来越严重的环境污染已经引起公众的广泛关注。被排放的废水中存在各种有害物质,这些有害物质毒性很强,抗降解,并对人类的健康造成极其严重的破坏。因此,对于具有高效、成本和操作性等优势的新型吸附剂材料的开发成了刻不容缓的趋势。本研究结合两种常规的吸附剂的优势和特点,以改性硅藻土作为合成基底,硝酸镍为催化剂,C2H2、H2和N2分别作为碳源、还原气体和保护气氛,采用化学气相沉积法制备了硅藻土基碳纳米管复合吸附剂材料,研究了此吸附剂对酚类化合物和有机染料的吸附性能。采用化学气相沉积法合成硅藻土基碳纳米管,以对苯酚的吸附能力作为响应值,探究了催化剂浓度、合成温度、合成时间、气体流量比等对硅藻土基碳纳米管的组成和孔结构的影响。结果表明:当合成参数控制为合成温度为600°C、合成时间为60min、硝酸镍浓度为0.1mol·L-1、乙炔和氮气流量比为1:8时得到的复合材料中碳纳米管产率较高,且缺陷较少,具有更好的孔结构,对苯酚具有更好的吸附效果;采用空气氧化和酸化两种纯化方式在硅藻土基碳纳米管表面成功引入了酸性基团,可以进一步提高对苯酚的吸附能力。研究硅藻土基碳纳米管对酚类化合物的吸附性能和吸附机理,结果表明:硅藻土基碳纳米管对苯酚、对甲基苯酚、对氯苯酚和对硝基苯酚的吸附过程更符合Langmuir等温模型和伪二阶动力学模型;热力学分析表明吸附过程是自发的放热反应,对苯酚和对甲基苯酚的吸附过程无序度减小,其他两种的无序度增加,其中前三者主要是物理吸附,后者为化学吸附;吸附-脱附实验表明硅藻土基碳纳米管复合材料具有极好的吸附再生性能。研究硅藻土基碳纳米管对有机染料的吸附性能和吸附机理,结果表明:硅藻土基碳纳米管对甲基橙的吸附过程更符合Freundlich等温模型,对亚甲基蓝和罗丹明B的吸附过程用Langmuir模型和Freundlich模型两种模型均有较好的拟合效果;复合吸附剂对三种染料的吸附过程更符合伪一阶动力学模型;热力学分析表明吸附剂材料对甲基橙吸附过程为自发的、无序性减小的、物理吸附主导的放热反应,对亚甲基蓝和罗丹明B是自发的、无序性增加的、物理吸附主导的吸热反应。研究硅藻土基碳纳米管在亚甲基蓝-对硝基苯酚二元废水系统中的竞争吸附特性,结果表明:复合吸附剂对二元系统中的两种吸附质的吸附过程与Freundlich等温吸附模型相容性更好,二者竞争吸附行为属于拮抗作用;吸附剂的吸附表面存在三类吸附位点,亚甲基蓝的存在会大大影响对吸附剂对对硝基苯酚的吸附过程,而对硝基苯酚的存在对吸附亚甲基蓝的影响不是十分显著。
Abstract
sui zhao guo nei gong ye de kuai su fa zhan ,gong ye fei shui si yi pai fang cheng le pu bian cun zai de wen ti ,yue lai yue yan chong de huan jing wu ran yi jing yin qi gong zhong de an fan guan zhu 。bei pai fang de fei shui zhong cun zai ge chong you hai wu zhi ,zhe xie you hai wu zhi du xing hen jiang ,kang jiang jie ,bing dui ren lei de jian kang zao cheng ji ji yan chong de po huai 。yin ci ,dui yu ju you gao xiao 、cheng ben he cao zuo xing deng you shi de xin xing xi fu ji cai liao de kai fa cheng le ke bu rong huan de qu shi 。ben yan jiu jie ge liang chong chang gui de xi fu ji de you shi he te dian ,yi gai xing gui zao tu zuo wei ge cheng ji de ,xiao suan nie wei cui hua ji ,C2H2、H2he N2fen bie zuo wei tan yuan 、hai yuan qi ti he bao hu qi fen ,cai yong hua xue qi xiang chen ji fa zhi bei le gui zao tu ji tan na mi guan fu ge xi fu ji cai liao ,yan jiu le ci xi fu ji dui fen lei hua ge wu he you ji ran liao de xi fu xing neng 。cai yong hua xue qi xiang chen ji fa ge cheng gui zao tu ji tan na mi guan ,yi dui ben fen de xi fu neng li zuo wei xiang ying zhi ,tan jiu le cui hua ji nong du 、ge cheng wen du 、ge cheng shi jian 、qi ti liu liang bi deng dui gui zao tu ji tan na mi guan de zu cheng he kong jie gou de ying xiang 。jie guo biao ming :dang ge cheng can shu kong zhi wei ge cheng wen du wei 600°C、ge cheng shi jian wei 60min、xiao suan nie nong du wei 0.1mol·L-1、yi gui he dan qi liu liang bi wei 1:8shi de dao de fu ge cai liao zhong tan na mi guan chan lv jiao gao ,ju que xian jiao shao ,ju you geng hao de kong jie gou ,dui ben fen ju you geng hao de xi fu xiao guo ;cai yong kong qi yang hua he suan hua liang chong chun hua fang shi zai gui zao tu ji tan na mi guan biao mian cheng gong yin ru le suan xing ji tuan ,ke yi jin yi bu di gao dui ben fen de xi fu neng li 。yan jiu gui zao tu ji tan na mi guan dui fen lei hua ge wu de xi fu xing neng he xi fu ji li ,jie guo biao ming :gui zao tu ji tan na mi guan dui ben fen 、dui jia ji ben fen 、dui lv ben fen he dui xiao ji ben fen de xi fu guo cheng geng fu ge Langmuirdeng wen mo xing he wei er jie dong li xue mo xing ;re li xue fen xi biao ming xi fu guo cheng shi zi fa de fang re fan ying ,dui ben fen he dui jia ji ben fen de xi fu guo cheng mo xu du jian xiao ,ji ta liang chong de mo xu du zeng jia ,ji zhong qian san zhe zhu yao shi wu li xi fu ,hou zhe wei hua xue xi fu ;xi fu -tuo fu shi yan biao ming gui zao tu ji tan na mi guan fu ge cai liao ju you ji hao de xi fu zai sheng xing neng 。yan jiu gui zao tu ji tan na mi guan dui you ji ran liao de xi fu xing neng he xi fu ji li ,jie guo biao ming :gui zao tu ji tan na mi guan dui jia ji cheng de xi fu guo cheng geng fu ge Freundlichdeng wen mo xing ,dui ya jia ji lan he luo dan ming Bde xi fu guo cheng yong Langmuirmo xing he Freundlichmo xing liang chong mo xing jun you jiao hao de ni ge xiao guo ;fu ge xi fu ji dui san chong ran liao de xi fu guo cheng geng fu ge wei yi jie dong li xue mo xing ;re li xue fen xi biao ming xi fu ji cai liao dui jia ji cheng xi fu guo cheng wei zi fa de 、mo xu xing jian xiao de 、wu li xi fu zhu dao de fang re fan ying ,dui ya jia ji lan he luo dan ming Bshi zi fa de 、mo xu xing zeng jia de 、wu li xi fu zhu dao de xi re fan ying 。yan jiu gui zao tu ji tan na mi guan zai ya jia ji lan -dui xiao ji ben fen er yuan fei shui ji tong zhong de jing zheng xi fu te xing ,jie guo biao ming :fu ge xi fu ji dui er yuan ji tong zhong de liang chong xi fu zhi de xi fu guo cheng yu Freundlichdeng wen xi fu mo xing xiang rong xing geng hao ,er zhe jing zheng xi fu hang wei shu yu jie kang zuo yong ;xi fu ji de xi fu biao mian cun zai san lei xi fu wei dian ,ya jia ji lan de cun zai hui da da ying xiang dui xi fu ji dui dui xiao ji ben fen de xi fu guo cheng ,er dui xiao ji ben fen de cun zai dui xi fu ya jia ji lan de ying xiang bu shi shi fen xian zhe 。
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论文详细介绍
论文作者分别是来自华南理工大学的王贝寒，发表于刊物华南理工大学2019-10-23论文，是一篇关于化学气相沉积法论文,碳纳米管论文,硅藻土论文,酚类化合物论文,有机染料论文,华南理工大学2019-10-23论文的文章。本文可供学术参考使用，各位学者可以免费参考阅读下载，文章观点不代表本站观点，资料来自华南理工大学2019-10-23论文网站，若本站收录的文献无意侵犯了您的著作版权，请联系我们删除。
标签：化学气相沉积法论文; 碳纳米管论文; 硅藻土论文; 酚类化合物论文; 有机染料论文; 华南理工大学2019-10-23论文;