Schiff碱功能化镉离子印迹材料的制备及对Cd(Ⅱ)的选择性吸附性能
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摘要
制备了Schiff碱功能化镉离子印迹材料,并研究了其对Cd(Ⅱ)离子的选择性吸附性能。利用水热法制备了Schiff碱功能化镉离子印迹材料,采用静态法测量了相关的吸附数据。结果表明:Schiff碱功能化镉离子印迹材料对Cd(Ⅱ)离子的吸附容量为48.5 mg/g,吸附平衡20 min完成,最佳p H值范围为4～8,且Schiff碱功能化镉离子印迹材料对Cd(Ⅱ)离子选择性好。Schiff碱功能化镉离子印迹材料对Cd(Ⅱ)离子的吸附具有高选择性,吸附速率快,且吸附容量较高等特点。
Schiff alkali functionalized Cd(Ⅱ)-imprinted sorbent was prepared by the hydrothermal method, and the adsorption of Cd(Ⅱ) ions onto the sorbent was investigated by determining the adsorption data with the static method. The adsorption capacity of the Schiff alkali functionalized Cd(Ⅱ)-imprinted sorbent for Cd(Ⅱ) was found to be 48.5 mg/g. The adsorption reached the equilibrium within 20 min and the suitable pH was in the range of 4～8. the Schiff alkali functionalized Cd(Ⅱ)-imprinted sorbent showed good selectivity of Cd(Ⅱ) ions and high adsorption capacity.
Schiff alkali functionalized Cd(Ⅱ)-imprinted sorbent was prepared by the hydrothermal method, and the adsorption of Cd(Ⅱ) ions onto the sorbent was investigated by determining the adsorption data with the static method. The adsorption capacity of the Schiff alkali functionalized Cd(Ⅱ)-imprinted sorbent for Cd(Ⅱ) was found to be 48.5 mg/g. The adsorption reached the equilibrium within 20 min and the suitable pH was in the range of 4～8. the Schiff alkali functionalized Cd(Ⅱ)-imprinted sorbent showed good selectivity of Cd(Ⅱ) ions and high adsorption capacity.
引文
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[2]杨威,刘灿波,余敏,等.微污染水源水中重金属镉的去除[J].化工学报, 2014, 65(3):1076-1083.
[3]马时申.用改进型CARIX离子交换技术去除水中镉,铜离子的研究[J].环境科学, 1989(4):36-40.
[4]张铮,吴燕,刘禹杨,等.生物淋滤法对疏浚淤泥中镉去除率及性质的影响[J].中国环境科学, 2013, 33(4):685-690.
[5]王燕燕,徐镜波,盛连喜.不同作物种苗对水中重金属镉去除的比较研究[J].环境科学, 2007, 28(5):987-992.
[6]张明磊,张朝晖,罗丽娟,等.磁性Fe3O4@Si O2@CS镉离子印迹聚合物的制备及吸附性能[J].高等学校化学学报,2011,32(12):2763-2768.
[7]陈美希,曹晓晴,余自友,等.镉离子印迹硅胶的制备与吸附性能[J].高分子材料科学与工程,2012, 28(8):163-166.
[8]SUIDP,CHENHX,LIUL,etal.Ion-ImprintedSilicaAdsorbent ModifiedDiffusiveGradientsinThinFilmsTechnique:Toolfor SpeciationAnalysisofFreeLeadSpecies[J].Talanta,2016,148:285-291.
[9]郭萌萌,章东升,范雪蕾,等.镉离子印迹硅胶材料的制备、表征及其吸附性能研究[J].功能材料,2013, 44(6):800-804.
[10]FAN H-T, SUN X-T, ZHANG Z-G, et al. Selective Removal of Lead(II)fromAqueousSolutionbyanIon-ImprintedSilicaSorbent Functionalized with Chelating N?Donor Atoms[J]. J. Chem. Eng. Data,2014, 59(6):2106-2114.