羧甲基纤维素钠印迹材料的制备及吸附性能测定
|
摘要
以羧甲基纤维素钠为原料,在水介质中,通过交联作用,制备了羧甲基纤维素钠吸附材料。采用红外光谱(FT-IR)对吸附材料的结构进行表征。用电感耦合等离子体质谱仪(ICP-MS)测定了其对金属离子La(Ⅲ)的吸附性能。表征结果说明,吸附材料表面具羟基和羧基活性基团。吸附动力学结果表明符合准二级反应动力学模型,饱和吸附容量为243.90 mg·g~(-1)。
The carboxymethyl cellulose adsorbent was prepared with carboxymethyl cellulose by cross-linking interaction in an aqueous medium.These obtained adsorbents were characterized by fourier transform infrared spectroscopy(FT-IR).The adsorption of La(Ⅲ) ions on adsorbents from aqueous solutions were measured with inductively coupled plasma mass spectrophotometer(ICP-MS). The characterization results indicated that the adsorbents with active groups such as hydroxyl groups and carboxyl groups. The adsorption kinetics followed the mechanism of the pseudo-second-order equation with a saturated adsorption capacity of243.90 mg·g~(-1).
The carboxymethyl cellulose adsorbent was prepared with carboxymethyl cellulose by cross-linking interaction in an aqueous medium.These obtained adsorbents were characterized by fourier transform infrared spectroscopy(FT-IR).The adsorption of La(Ⅲ) ions on adsorbents from aqueous solutions were measured with inductively coupled plasma mass spectrophotometer(ICP-MS). The characterization results indicated that the adsorbents with active groups such as hydroxyl groups and carboxyl groups. The adsorption kinetics followed the mechanism of the pseudo-second-order equation with a saturated adsorption capacity of243.90 mg·g~(-1).
引文
[1]Bayramoglu G,Arica M Y.Synthesis of Cr(VI)-imprinted poly(4-vinyl pyridine-co-hydroxyethyl methacrylate)particles:its adsorption propensity to Cr(VI)[J].Journal of Hazardous Materials,2011,187(1-3):213-221.
[2]Ren Y,Liu P,Feng J,et al.Selective recognition of molybdenum(VI)from water by Mo(VI)oxy ion-imprinted particle as an adsorbent[J].Chemical Engineering Journal,2013,219(3):286-294.
[3]张继国,王艳,张琼,等.聚乙烯亚胺-羧甲基纤维素的合成及对金属离子的吸附性能[J].高分子材料科学与工程,2014,30(3):15-20.
[4]曹向宇,李垒,陈灏.羧甲基纤维素/Fe3O4复合纳米磁性材料的制备、表征及吸附性能的研究[J].化学学报,2010,68(15):1461-1466.
[5]Ho Y S,Mc Kay G.The kinetics of sorption of divalent metal ions onto sphagnum moss peat[J].Water Research,2000,34(3):735-742.
[6]Wu F C,Tseng R L,Juang R S.Kinetic modeling of liquid-phase adsorption of reactive dyes and metal ions on chitosan[J].Water Research,2001,35(3):613-618.
[2]Ren Y,Liu P,Feng J,et al.Selective recognition of molybdenum(VI)from water by Mo(VI)oxy ion-imprinted particle as an adsorbent[J].Chemical Engineering Journal,2013,219(3):286-294.
[3]张继国,王艳,张琼,等.聚乙烯亚胺-羧甲基纤维素的合成及对金属离子的吸附性能[J].高分子材料科学与工程,2014,30(3):15-20.
[4]曹向宇,李垒,陈灏.羧甲基纤维素/Fe3O4复合纳米磁性材料的制备、表征及吸附性能的研究[J].化学学报,2010,68(15):1461-1466.
[5]Ho Y S,Mc Kay G.The kinetics of sorption of divalent metal ions onto sphagnum moss peat[J].Water Research,2000,34(3):735-742.
[6]Wu F C,Tseng R L,Juang R S.Kinetic modeling of liquid-phase adsorption of reactive dyes and metal ions on chitosan[J].Water Research,2001,35(3):613-618.