| 孔径和比表面积调控对SBA-15上溶菌酶吸附动力学的影响 |
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| 引用本文： | 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].吉林大学学报(理学版),2011,49(1):139-144. |
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| 作者姓名： | 代文彦 邹永存 王海果 张琪 曹希传 李国栋 |
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| 作者单位： | 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 |
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| 基金项目： | 国家自然科学基金，江苏省自然科学基金，中国矿业大学科技基金，吉林大学无机合成与制备化学国家重点实验室开放项目基金 |
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| 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 53SBET-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...
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| 关 键 词： | SBA-15 溶菌酶 吸附动力学 粒内扩散 |
| 收稿时间： | 2010-04-16 |
Effects of Regulation of Specific Surface Area and Pore Diameter on Adsorption Kinetics of Lysozyme on SBA-15 |
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| DAI Wen-yan,ZOU Yong-cun,WANG Hai-guo,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].Journal of Jilin University: Sci Ed,2011,49(1):139-144. |
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| Authors: | DAI Wen-yan ZOU Yong-cun WANG Hai-guo ZHANG Qi CAO Xi-chuan LI Guo-dong |
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| Institution: | 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 |
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| 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 53SBET-130.58. Adsorption kineticprocesses 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. |
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| Keywords: | SBA-15 |
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