期刊
SEPARATION SCIENCE AND TECHNOLOGY
卷 49, 期 2, 页码 258-266出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/01496395.2013.837073
关键词
microparticles; molecular recognition; molecularly imprinted polymer; precipitation polymerization; synephrine
资金
- National Natural Science Foundation of China [21366019, 20806037, 20876131]
- Jiangxi Province Young Scientists (Jinggang Star) Cultivation Plan [20112BCB23002]
- Natural Science Foundation of Jiangxi, China [2007GQH1752]
- Jiangxi Province Higher School Science and Technology Landing Plan Projects [KJLD13012]
- Open Foundation of Key Laboratory of Poyang Lake Ecology, Bio-Resource Utilization of the Ministry of Education [Z04998]
- Special Funds for Graduate Student Innovation in Jiangxi Province [YC2011-S005, YC2012-S017]
Uniformly sized synephrine molecularly imprinted polymer (MIP) microparticles were prepared via precipitation polymerization. The presence of the template, the amount of monomer, crosslinker, and porogenic solvent could affect the size distribution and morphology of the polymers. The pseudo-second-order kinetic model could provide a better correlation for the adsorption than the pseudo-first-order model. The intraparticle diffusion study showed that the sorption involved intraparticle diffusion, but that was not the only rate-controlling step. The equilibrium data better fit the Freundlich model than the Langmuir model. The Scatchard plot of MIPs revealed MIPs had two groups of sites with different affinities. Subsequent recognition selectivity experiments demonstrated preferential structural selectivity for synephrine with respect to other structurally similar compounds (i.e., octopamine and tyramine). Compared with the bulk MIP of SYN, the SYN MIP microparticles in this work had higher adsorption selectivity and capacity due to their smaller particle sizes; moreover, the precipitation polymerization was time-saving due to not using a crash-and-sieve process.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据