负载Fe_3O_4/TiO_2β-环糊精聚合物的制备及应用
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摘要
实验采用β-环糊精与丙二酸反应获得一种β-环糊精(β-CD)的聚合物,通过分解负载法,将制得的Fe_3O_4/Ti O2磁性复合物负载到该聚合物上得到负载Fe_3O_4/Ti O2β-CD聚合物。制备聚合物的优化实验条件为:β-CD与丙二酸物质的量比为1:4,100℃下反应4h。当Fe_3O_4/Ti O2磁性复合物与丙二酸-β-CD聚合物质量比为1:5制备到的负载Fe_3O_4/Ti O2β-CD聚合物含钛量84577.16 mg·kg-1、含铁量12811.82 mg·kg-1,SEM表明它的粒径为0.033μm。该负载Fe_3O_4/Ti O2β-CD聚合物对罗丹明B的光催化降解效率为56.04%。对金属离子的吸附实验表明对Cr6+吸附率为59.64%,对Cu2+吸附率为71.02%。
A β-cyclodextrin(β-CD) polymer was obtained by the reaction of β-cyclodextrin and malonic acid.The prepared Fe_3O_4/TiO_2 magnetic complex was loaded onto the polymer by decomposing the loading method,and the loaded Fe_3O_4/TiO_2 beta-CD polymer was obtained.Experiments showed that the best preparation condition of polymer was that the mole ratio of β-CD to malonic acid was 1: 4 for 4 hours at 100℃. When the mass ratio of Fe_3O_4/TiO_2 magnetic compound to malonic acid-beta-CD polymer is 1: 5,Titanium content in the β-CD Polymer supported Fe_3O_4/TiO_2 is 84577. 16 mg·kg-1,and the iron content is 12811. 82 mg·kg-1.SEM shows that the size of the particles is 0. 033μm. The photocatalytic degradation efficiency of the β-CD Polymer supported Fe_3O_4/TiO_2 to Rhodamine B was 56. 04%. The adsorption experiments on metal ions showed that the adsorption rate of Cr6+was59. 64%and the adsorption rate of Cu2+was 71. 02%.
A β-cyclodextrin(β-CD) polymer was obtained by the reaction of β-cyclodextrin and malonic acid.The prepared Fe_3O_4/TiO_2 magnetic complex was loaded onto the polymer by decomposing the loading method,and the loaded Fe_3O_4/TiO_2 beta-CD polymer was obtained.Experiments showed that the best preparation condition of polymer was that the mole ratio of β-CD to malonic acid was 1: 4 for 4 hours at 100℃. When the mass ratio of Fe_3O_4/TiO_2 magnetic compound to malonic acid-beta-CD polymer is 1: 5,Titanium content in the β-CD Polymer supported Fe_3O_4/TiO_2 is 84577. 16 mg·kg-1,and the iron content is 12811. 82 mg·kg-1.SEM shows that the size of the particles is 0. 033μm. The photocatalytic degradation efficiency of the β-CD Polymer supported Fe_3O_4/TiO_2 to Rhodamine B was 56. 04%. The adsorption experiments on metal ions showed that the adsorption rate of Cr6+was59. 64%and the adsorption rate of Cu2+was 71. 02%.
引文
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[2]雍国平,查正根,李光水.水溶液中几种苯衍生物与β-环糊精包合物的热力学研究[J].化学研究与应用,2002(03):308-309+273.
[3]王南平,余晓冬,陈洪渊.环糊精超分子化学研究的新进展[J].化学研究与应用,2001(01):27-32.
[4]Huang H,Fan Y,Wang J W,et al.Adsorption kinetics and thermodynamics of water-insoluble crosslinkedβ-cyclodextrin polymer for phenol in aqueous solution[J].Macromol Res,2013,21(7):726-731.
[5]Li Chen,Richard M.B,Kam C.Tam.Synthesis ofβ-Cyclodextrin-Modified Cellulose Nanocrystals(CNCs)@Fe3O4@Si O2 Superpara-magnetic Nanorods[J].Acs Sustain Chem Engin,2014,2(4):951–958.
[6]张来新,朱海云.环糊精的修饰改性及应用研究新进展[J].化学工程师,2013,27(07):45-47.
[7]李瑞雪,刘述梅,赵建青.交联β-环糊精聚合物/Fe3O4核壳结构复合纳米颗粒的制备和性能研究[J].材料导报,2010,24(12):33-36.
[8]Zhao F,Repo E,Yin D,et al.EDTA-cross-linkedβ-cyclodextrin:An environmentally friendly bifunctional adsorbent for simultaneous adsorption of metals and cationic dyes[J].Environ Sci Techn,2015,49(17):10570-10580.
[9]周波,汪舒,康文泽,等.三维石墨烯的制备及其对罗丹明B的吸附性能[J].黑龙江科技大学学报,2015,25(03):242-246.