石墨烯-PET复合纤维的制备及其对水中结晶紫的吸附
|
摘要
为解决印染废水的环境污染问题,以涤纶(PET)纤维为基体,还原氧化石墨烯(rGO)作为功能涂层,采用浸渍-还原法制备rGO-PET纤维,研究复合纤维对水中结晶紫的吸附情况.实验结果表明,当温度为30℃,pH值为6,吸附剂用量为200mg及吸附时间为60min时,对溶液中结晶紫的吸附量最高;复合纤维对结晶紫的吸附行为符合准二级动力学吸附模型,且最大理论吸附量为30.528mg/g.吸附结束后,取出复合纤维进行解吸附再生,可实现吸附剂的循环使用.
To solve the problem of environmental pollution of printing and dyeing wastewater,rGO-PET fibers which were made of polyester(PET)fiber as matrix and reduced graphene oxide(rGO)as functional coating were prepared by dipping-reduction method.The composite fiber was used as a kind of renewable adsorbent to study its adsorption of crystal violet.Results show that the amount of adsorption of crystal violet reaches highest value under the conditions of 30℃,the pH 6,the composite dosage of 200 mg,and the adsorption time of 60 min.The ad-sorption behavior of the composite fibers on the crystal violet was in accordance with the pseudo-second order kinetic model,and the maximum theoretical adsorption was 30.528 mg/g.After the adsorption,remove the composite fiber for desorption regeneration which can achieve the recycling of adsorbents.
To solve the problem of environmental pollution of printing and dyeing wastewater,rGO-PET fibers which were made of polyester(PET)fiber as matrix and reduced graphene oxide(rGO)as functional coating were prepared by dipping-reduction method.The composite fiber was used as a kind of renewable adsorbent to study its adsorption of crystal violet.Results show that the amount of adsorption of crystal violet reaches highest value under the conditions of 30℃,the pH 6,the composite dosage of 200 mg,and the adsorption time of 60 min.The ad-sorption behavior of the composite fibers on the crystal violet was in accordance with the pseudo-second order kinetic model,and the maximum theoretical adsorption was 30.528 mg/g.After the adsorption,remove the composite fiber for desorption regeneration which can achieve the recycling of adsorbents.
引文
[1]冯敏.现代水处理技术[M].北京:化学工业出版社,2006:120-131.FENG M.Modern water treatment technology[M].Beijing:Chemical Industry Press,2006:120-131.
[2]陈志德.印染行业污水处理工艺探析[J].环境与发展,2014,26(1):135-137.CHEN Z D.Sewage treatment process analysis for printing and dyeing industry[J].Environment and Development,2014,26(1):135-137.
[3]肖蓝,王祎龙,唐玉霖,等.石墨烯及其复合材料在水处理中的应用[J].化学进展,2013,25(z1):419-430.XIAO L,WANG Y L,TANG Y L,et al.Graphene-containing composite materials for water treatment[J].Progress in Chemistry,2013,25(z1):419-430.
[4]吴媛,李昕,余水江,等.氧化还原石墨烯对NH3的敏感性研究[J].西安工程大学学报,2014,28(6):720-724.WU Y,LI X,YU S J,et al.Study of gas sensing properties of reduced graphene oxide to NH3[J].Journal of Xian Polytechnic University,2014,28(6):720-724.
[5]邢奕,刘敏,洪晨,等.石墨烯改性有机膨润土吸附性能及其动力学[J].工程科学学报,2016,38(3):438-445.XING Y,LIU M,HONG C,et al.Adsorption performance and kinetics of organobentonite modified with graphene[J].Chinese Journal of Engineering,2016,38(3):438-445.
[6]APUL O G,WANG Q,ZHOU Y,et al.Adsorption of aromatic organic contaminants by graphene nanosheets:Comparison with carbon nanotubes and activated carbon[J].Water Research,2013,47(4):1648-1654.
[7]XU J,WANG L,ZHU Y.Decontamination of bisphenol A from aqueous solution by graphene adsorption[J].Langmuir the Acs Journal of Surfaces&Colloids,2012,28(22):8418-8425.
[8]ZHU P,SHEN M,XIAO S,et al.Experimental study on the reducibility of graphene oxide by hydrazine hydrate[J].Physica B:Condensed Matter,2011,406(3):498-502.
[9]YANG K,LEE J S,KIM J,et al.Polydopamine-mediated surface modification of scaffold materials for human neural stem cell engineering[J].Biomaterials,2012,33(29):6952-6964.
[10]LYNGE M E,VAN D W R,POSTMA A,et al.Polydopamine A nature-inspired polymer coating for biomedical science[J].Nanoscale,2011,3(12):4916-4928.
[11]胡忠良,李雪锋,席柳江,等.石墨烯材料在水处理方面的研究进展[J].功能材料,2016,47(S1):1-6.HU Z L,LI X F,XI L J,et al.Research progress on graphene based materials for water treatment[J].Journal of Functional Materials,2016,47(S1):1-6.
[12]NAIR R R,WU H A,JAYARAM P N,et al.Unimpeded permeation of water through helium-leak-tight graphenebased membranes[J].Science,2012,335(6067):442-444.
[13]ZHANG Z,HUANG H,YANG X,et al.Tailoring electronic properties of graphene byπ-πstacking with aromatic molecules[J].Journal of Physical Chemistry Letters,2011,2(22):2897-2905.
[14]葛昊,田辉,李明霞,等.反应条件对水合肼还原氧化石墨烯表面官能团还原效率的影响[J].辽宁大学学报(自然科学版)2014,41(3):243-250.GE H,TIAN H,LI M X,et al.Influence of reaction conditions on the reduction efficiency of the surface function groups of graphene oxide reduced by hydrazine hydrate[J].Journal of Liaoning University(Natural Sciences Edition),2014,41(3):243-250.
[15]RAMESHA G K,KUMARA A V,MURALIDHARA H B,et al.Graphene and graphene oxide as effective adsorbents toward anionic and cationic dyes[J].Journal of Colloid&Interface Science,2011,361(1):270-277.
[16]张彩宁,王煦漫,孙菲,等.淀粉-g-PAM/MMT对结晶紫的脱色研究[J].纺织高校基础科学学报,2015,28(3):375-378.ZHANG C N,WANG X M,SUN F,et al.Study on the decolorization of crystal violet by starch-g-PAM/MMT[J].Basic Sciences Journal of Textile Universities,2015,28(3):375-378.
[17]HUBER M M,GOBEL A,JOSS A,et al.Oxidation of pharmaceuticals during ozonation of municipal wastewater effluents:A pilot study[J].Environmental Science&Technology,2005,39(11):4290-4299.
[18]SHU Y,JIA X.The mechanisms for CTMAB-bentonites to adsorb CBs from water in the adsorption kinetics and thermodynamics view[J].Acta Scientiae Circumstantiae,2005,25(11):1530-1536.
[2]陈志德.印染行业污水处理工艺探析[J].环境与发展,2014,26(1):135-137.CHEN Z D.Sewage treatment process analysis for printing and dyeing industry[J].Environment and Development,2014,26(1):135-137.
[3]肖蓝,王祎龙,唐玉霖,等.石墨烯及其复合材料在水处理中的应用[J].化学进展,2013,25(z1):419-430.XIAO L,WANG Y L,TANG Y L,et al.Graphene-containing composite materials for water treatment[J].Progress in Chemistry,2013,25(z1):419-430.
[4]吴媛,李昕,余水江,等.氧化还原石墨烯对NH3的敏感性研究[J].西安工程大学学报,2014,28(6):720-724.WU Y,LI X,YU S J,et al.Study of gas sensing properties of reduced graphene oxide to NH3[J].Journal of Xian Polytechnic University,2014,28(6):720-724.
[5]邢奕,刘敏,洪晨,等.石墨烯改性有机膨润土吸附性能及其动力学[J].工程科学学报,2016,38(3):438-445.XING Y,LIU M,HONG C,et al.Adsorption performance and kinetics of organobentonite modified with graphene[J].Chinese Journal of Engineering,2016,38(3):438-445.
[6]APUL O G,WANG Q,ZHOU Y,et al.Adsorption of aromatic organic contaminants by graphene nanosheets:Comparison with carbon nanotubes and activated carbon[J].Water Research,2013,47(4):1648-1654.
[7]XU J,WANG L,ZHU Y.Decontamination of bisphenol A from aqueous solution by graphene adsorption[J].Langmuir the Acs Journal of Surfaces&Colloids,2012,28(22):8418-8425.
[8]ZHU P,SHEN M,XIAO S,et al.Experimental study on the reducibility of graphene oxide by hydrazine hydrate[J].Physica B:Condensed Matter,2011,406(3):498-502.
[9]YANG K,LEE J S,KIM J,et al.Polydopamine-mediated surface modification of scaffold materials for human neural stem cell engineering[J].Biomaterials,2012,33(29):6952-6964.
[10]LYNGE M E,VAN D W R,POSTMA A,et al.Polydopamine A nature-inspired polymer coating for biomedical science[J].Nanoscale,2011,3(12):4916-4928.
[11]胡忠良,李雪锋,席柳江,等.石墨烯材料在水处理方面的研究进展[J].功能材料,2016,47(S1):1-6.HU Z L,LI X F,XI L J,et al.Research progress on graphene based materials for water treatment[J].Journal of Functional Materials,2016,47(S1):1-6.
[12]NAIR R R,WU H A,JAYARAM P N,et al.Unimpeded permeation of water through helium-leak-tight graphenebased membranes[J].Science,2012,335(6067):442-444.
[13]ZHANG Z,HUANG H,YANG X,et al.Tailoring electronic properties of graphene byπ-πstacking with aromatic molecules[J].Journal of Physical Chemistry Letters,2011,2(22):2897-2905.
[14]葛昊,田辉,李明霞,等.反应条件对水合肼还原氧化石墨烯表面官能团还原效率的影响[J].辽宁大学学报(自然科学版)2014,41(3):243-250.GE H,TIAN H,LI M X,et al.Influence of reaction conditions on the reduction efficiency of the surface function groups of graphene oxide reduced by hydrazine hydrate[J].Journal of Liaoning University(Natural Sciences Edition),2014,41(3):243-250.
[15]RAMESHA G K,KUMARA A V,MURALIDHARA H B,et al.Graphene and graphene oxide as effective adsorbents toward anionic and cationic dyes[J].Journal of Colloid&Interface Science,2011,361(1):270-277.
[16]张彩宁,王煦漫,孙菲,等.淀粉-g-PAM/MMT对结晶紫的脱色研究[J].纺织高校基础科学学报,2015,28(3):375-378.ZHANG C N,WANG X M,SUN F,et al.Study on the decolorization of crystal violet by starch-g-PAM/MMT[J].Basic Sciences Journal of Textile Universities,2015,28(3):375-378.
[17]HUBER M M,GOBEL A,JOSS A,et al.Oxidation of pharmaceuticals during ozonation of municipal wastewater effluents:A pilot study[J].Environmental Science&Technology,2005,39(11):4290-4299.
[18]SHU Y,JIA X.The mechanisms for CTMAB-bentonites to adsorb CBs from water in the adsorption kinetics and thermodynamics view[J].Acta Scientiae Circumstantiae,2005,25(11):1530-1536.