孔径和比表面积调控对SBA-15上溶菌酶吸附动力学的影响

J4 ›› 2011, Vol. 49 ›› Issue (01): 139-144.

孔径和比表面积调控对SBA-15上溶菌酶吸附动力学的影响

代文彦¹, 邹永存², |王海果¹, 张琪¹, 曹希传¹, 李国栋²

1. 中国矿业大学材料科学与工程学院, 江苏徐州 221116;2. 吉林大学无机合成与制备国家重点实验室, 长春 130012

收稿日期:2010-04-16 出版日期:2011-01-26 发布日期:2011-02-19
通讯作者: 李国栋 E-mail:lgd@jlu.edu.cn

Effects of Regulation of Specific Surface Area and Pore Diameteron Adsorption Kinetics of Lysozyme on SBA-15

DAI Wenyan¹, ZOU Yongcun², |WANG Haiguo^1, |ZHANG Qi¹, CAO Xichuan¹, LI Guodong²

1. School of Materials Science and Engineering, China University of Mining and Technology, Xuzhou 221116, Jiangsu Province, China; |2. State Key Laboratory of |Inorganic Synthesis and Preparative Chemistry, Jilin University, Changchun 130012, China

Received:2010-04-16 Online:2011-01-26 Published:2011-02-19
Contact: LI Guodong E-mail:lgd@jlu.edu.cn

摘要/Abstract

摘要：

研究具有不同孔径和比表面积的介孔二氧化硅SBA15对溶菌酶的吸附行为, 并分析了材料孔径和比表面积对吸附性质的影响. 研究结果表明: 材料对溶菌酶的最大吸附量受控于材料的比表面积, 关系式为q=0.602 53S_BET-130.58；用3种吸附动力学模型分析溶菌酶的吸附动力学过程, 发现吸附行为符合准二级动力学模型；用外部扩散传质模型和粒内扩散模型分析吸附机理, 在一定孔径范围内, 整体吸附速率和外扩散初始吸附速率随孔径的增加而快速增大, 粒内扩散速率则缓慢增加；此外, FT-IR表明SBA15对溶菌酶的结构无影响.

关键词: SBA-15, 溶菌酶, 吸附动力学, 粒内扩散

Abstract:

The adsorption behavior of lysozyme (LYZ) on SBA-15 mesoporous silica with different pore diameters and specific surface areas was inv
estigated. Adsorption capacities of LYZ were controlled by the specific surface area, and the relationship between the adsorption and the special surface area is q=0.602 53S_BET-130.58. Adsorption kinetic processes were analyzed with three kinds of adsorption reaction models. It wasshown that adsorption kinetics followed the pseudo second order model very well. Adsorption mechanism was analyzed with intraparticle diffusion and simplified external mass transfer diffusion model. The adsorption rates were dependent upon the pore diameter of mesoporous materials. In certain ranges of pore diameters, the overall adsorption rate and initial adsorption rate of external diffusion increased quickly while intraparticle diffusion rate increased slowly. It was also suggested that SBA15 did not affect the lysozyme structure evidenced by FTIR analysis.

Key words: SBA-15, lysozyme, adsorption kinetics, intraparticle diffusion

中图分类号:

O643

代文彦, 邹永存, 王海果, 张琪, 曹希传, 李国栋. 孔径和比表面积调控对SBA-15上溶菌酶吸附动力学的影响[J]. J4, 2011, 49(01): 139-144.

DAI Wen-Pan, JU Yong-Cun, Wang-Hai-Guan, ZHANG Qi, CAO Xi-Chuan, LI Guo-Dong. Effects of Regulation of Specific Surface Area and Pore Diameteron Adsorption Kinetics of Lysozyme on SBA-15[J]. J4, 2011, 49(01): 139-144.

[1]	徐玲, 包晓燕, 邢向英, 张景超, 冯志强, 毛丽丽, 李久明. 负载型磷钨酸催化剂在癸二酸二辛酯合成中的应用[J]. 吉林大学学报(理学版), 2017, 55(05): 1323-1328.
[2]	赵婷婷, 毕淑云, 王瑜, 王天娇, 庞博. Meso-四(对-羟基苯基)卟啉和溶菌酶的相互作用机理[J]. 吉林大学学报(理学版), 2014, 52(04): 820-824.