磁性埃洛石复合材料的制备及其对亚甲基蓝吸附性能研究
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摘要
利用简单的化学共沉淀法成功合成了磁性埃洛石复合材料,并用静态批示法对其吸附亚甲基蓝的行为进行研究。采用红外光谱仪(FT-IR)、透射电子显微镜(TEM)、X射线衍射仪(XRD)和振动样品磁强计(VSM)对磁性埃洛石进行表征,考察了埃洛石/FeCl_3·6H_2O质量比、吸附剂投入量、亚甲基蓝初始浓度、溶液初始p H值和吸附时间等因素对亚甲基蓝在磁性埃洛石上吸附的影响,并进行了吸附动力学研究。结果表明:Fe_3O_4纳米粒子成功地复合到埃洛石的表面;溶液初始p H值对磁性埃洛石吸附亚甲基蓝的影响较大;磁性埃洛石复合材料对亚甲基蓝的吸附行为符合准二级动力学模型。
Magnetic halloysite composite was synthesized by chemical co-precipitation method. The adsorption performance for magnetic halloysite composite was synthesized by static experimental method.The adsorption performance for methylene blue was investigated by static experimental method. The adsorbent was characterized by Fourier transfer infrared( FT-IR),Transmission Electron Microscope( TEM),X-Ray Diffractome( XRD) and vibrating sample magnetometer( VSM). Batch adsorption experiments were conducted to study the influence of various factors,such as HNTs/FeCl_3·6H_2O mass ratio,adsorbent dose,initial concentration of methylene blue,initial pH,contact time on the adsorption of methylene blue. At the same time,the adsorption kinetics was investigated. The results indicate that magnetic halloysite composite is successfully obtained. The adsorption of magnetic halloysite for methylene blue is strongly affected by initial pH. The adsorption behavior is fitted well to the pseudosecond-order kinetic model.
Magnetic halloysite composite was synthesized by chemical co-precipitation method. The adsorption performance for magnetic halloysite composite was synthesized by static experimental method.The adsorption performance for methylene blue was investigated by static experimental method. The adsorbent was characterized by Fourier transfer infrared( FT-IR),Transmission Electron Microscope( TEM),X-Ray Diffractome( XRD) and vibrating sample magnetometer( VSM). Batch adsorption experiments were conducted to study the influence of various factors,such as HNTs/FeCl_3·6H_2O mass ratio,adsorbent dose,initial concentration of methylene blue,initial pH,contact time on the adsorption of methylene blue. At the same time,the adsorption kinetics was investigated. The results indicate that magnetic halloysite composite is successfully obtained. The adsorption of magnetic halloysite for methylene blue is strongly affected by initial pH. The adsorption behavior is fitted well to the pseudosecond-order kinetic model.
引文
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[28]Duan J M,Liu R C,Chen T,et al.Halloysite nanotube-Fe3O4composite for removal of methyl violet from aqueous solutions[J].Desalination,2012,293:46-52.
[29]Dong Y H,Liu Z J,Chen L.Removal of Zn(II)from aqueous solution by natural halloysite nanotubes[J].Journal of Radioanalytical and Nuclear Chemistry,2012,292:435-443.
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[2]Luo P,Zhao Y F,Zhang B,et al.Study on the adsorption of Neutral Red from aqueous solution onto halloysite nanotubes[J].Water Research,2010,44(5):1489-1497.
[3]师兰.新型吸附材料的制备及对重金属离子和染料吸附性能研究[D].吉林:吉林大学,2014.
[4]曹慧玲.功能复合材料降解有机染料的研究[D].广州:华南师范大学文,2007.
[5]钟金汤.偶氮染料及其代谢产物的化学结构与毒性关系的回顾与前瞻[J].环境与职业医学,2004,21(1):58-62.
[6]马俊俊.多孔磁性碳复合材料的制备及去除亚甲基蓝的研究[D].兰州:兰州大学,2012.
[7]李庄.高浓度染料废水(含偶氮染料废水)处理技术放入研究[D].长沙:湖南大学,2001.
[8]包维维.吸附材料的制备及其对重金属离子和染料吸附性能研究[D].吉林:吉林大学,2013.
[9]李冉冉,黄昊,董星龙,等.碳包覆磁性镍纳米离子对亚甲基蓝的吸附性能[J].材料研究学报,2015,29(9):663-670.
[10]Zhao M F,Liu P.Adsorption behavior of methylene blue on halloysite nanotubes[J].Microporous and Mesoporous Materials,2008,112:419-424.
[11]赫文芳,陈元涛,张炜,等.磁性埃洛石复合材料的制备及其对十八烷胺吸附性能研究[J].环境科学学报,2016,36(3):873-879.
[12]胡春莲,陈元涛,张炜,等.Co(Ⅱ)在磁性埃洛石上的吸附行为研究[J].环境科学学报,2015,35(9):2813-2819.
[13]吴璇.碱性钙基膨润土的制备及其应用研究[D].南宁:广西大学,2006.
[14]唐登勇,郑正,林志荣,等.天然沸石吸附低浓度氨氮废水的研究[J].环境科学与技术,2010,33(12):206-209.
[15]林少华,徐鹏,周培国.凹凸棒石对水中Cu2+的吸附研究[J].森林工程,2011,27(1):72-74.
[16]蒋明琴.改性高岭土对废水中重金属离子的吸附性能研究[D].福州:福建师范大学,2009.
[17]汤琪,刘攀,文永林,等.稻杆作为Cr6+吸附剂的改性剂优选[J].应用化工,2015,44(7):1210-1222.
[18]张庆芳,杨国栋,孔秀琴,等.改性花生壳吸附水中Cr6+的研究[J].化学与生物工程,2008,25(2):29-31.
[19]刘晓艳,刘芳佞.锯末吸附处理染料废水中的初步研究[J].工业安全与环保,2010,36(10):22-23.
[20]冯宁川.橘子皮化学改性及其对重金属离子吸附行为的研究[D].长沙:中南大学,2009.
[21]张中杰,王旭,邱世鑫,等.磁性埃洛石对水溶液中盐酸土霉素的吸附[J].环境工程学报,2013,7(10):3921-3926.
[22]王阳.新型磁性纳米吸附材料的制备及其对重金属汞离子选择性吸附的研究[D].兰州:兰州大学,2011.
[23]孙海平.磁性纳米粒子的表面修饰及功能化[D].扬州:扬州大学,2008.
[24]封余贤,乔磊磊,蓝平,等.磁性纳米四氧化三铁制备研究进展[J].化学世界,2014,(1):50-54.
[25]蔡晓峰,张黎明,戴长松.超顺磁性四氧化三铁纳米颗粒的制备及表征[J].北京生物医学工程,2012,31(6):603-606.
[26]Yang S T,Zong P F,Hu J,et al.Fabrication of b-cyclodextrin conjugated magnetic HNT/iron oxide composite for high-efficient decontamination of U(VI)[J].Chemical Engineering Journal,2013,214:376-385.
[27]Xie Y F,Qian D Y,Wu D L,et al.Magnetic halloysite nanotubes/iron oxide composites for the adsorption of dyes[J].Chemical Engineering Journal,2011,168(2):959-963.
[28]Duan J M,Liu R C,Chen T,et al.Halloysite nanotube-Fe3O4composite for removal of methyl violet from aqueous solutions[J].Desalination,2012,293:46-52.
[29]Dong Y H,Liu Z J,Chen L.Removal of Zn(II)from aqueous solution by natural halloysite nanotubes[J].Journal of Radioanalytical and Nuclear Chemistry,2012,292:435-443.
[30]陈培.磁性高岭石/高岭石纳米管制备及对亚甲基蓝的吸附研究[D].郑州:郑州大学,2015.