Noble surface molecularly imprinted polymer modified titanium dioxide toward solanesol adsorption selectivity study
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FOCUS ISSUE
THERMODYNAMICS OF COMPLEX SOLIDS
Noble surface molecularly imprinted polymer modified titanium dioxide toward solanesol adsorption selectivity study Chenglong Duan1, Zhenbin Chen1,a), Xiaojiao Liu1, Ke Li1, Xudong Wang1, Weiwei Jia1, Zhenghua Tang2, Juan M. Ruso3, Zhen Liu4,b) 1
State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China; and School of Material Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, China Guangzhou Key Laboratory for Surface Chemistry of Energy Materials, New Energy Research Institute, School of Environment and Energy, Guangzhou Higher Education Mega Centre, South China University of Technology, Guangzhou 5100067, China; and Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, Guangdong Provincial Engineering and Technology Research Center for Environmental Risk Prevention and Emergency Disposal, School of Environment and Energy, Guangzhou Higher Education Mega Centre, South China University of Technology, Guangzhou 510006, China 3 Soft Matter and Molecular Biophysics Group, Department of Applied Physics, University of Santiago de Compostela, Santiago de Compostela 15782, Spain 4 Department of Physics and Engineering, Frostburg State University, Maryland 21532, USA a) Address all correspondence to these authors. e-mail: [email protected] b) e-mail: [email protected] 2
Received: 16 January 2019; accepted: 9 April 2019
Surface molecularly imprinted polymer of solanesol (SA-SMIP) was prepared by reversed phase suspension polymerization using modified titanium dioxide (TiO2) as carrier, and operation conditions were investigated and optimized. Structures of modified TiO2 and SA-SMIP obtained at optimal conditions were characterized by Fourier transform infrared spectrometer adopting original TiO2 and non-surface molecularly imprinted polymer as reference. The SA-SMIP synthesized under optimal conditions displayed an excellent recognition of SA from the mixture of SA and triacontanol. The maximum separation degree of SA was 2.90. Finally, the adsorption kinetics and isotherm were investigated and analyzed. Adsorption kinetics results indicated that the adsorption of SA-SMIP to SA was a pseudo-second order process, and the adsorption of beginning and later stages was controlled by homogeneous particle diffusion and adsorption reaction process, respectively. Adsorption isotherm results documented hereby were two sorts of bonding sites, complete imprinted cavities and defective imprinted cavities. The adsorption for two bonding sites could be well lined up with the Langmuir model.
Introduction Solanesol (SA), a nine polyisoprene primary alcohol with alltrans configuration, was reported as the starting material for the synthesis of coenzyme Q10, vitamin K2, and SDB, an anticancer synergist agent [1, 2]. Besides its use as a precursor to prepare above medicine, SA itself also possesses extensive pharmaceutical value, such as antibiosis and antiphlog
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