Reversible Adsorption of Methylene Blue as Cationic Model Cargo onto Polyzwitterionic Magnetic Nanoparticles
Reversible Adsorption of Methylene Blue as Cationic Model Cargo onto Polyzwitterionic Magnetic Nanoparticles
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DOI：
10.1002/marc.201800017
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发表时间：
2018-07-01
影响因子：
4.6
通讯作者：
Schacher, Felix H.
中科院分区：
文献类型：
--
作者：
Biehl, Philip;von der Luhe, Moritz;Schacher, Felix H.
研究了阳离子染料亚甲基蓝（MB）在聚脱氢丙氨酸（PDha）包覆的磁性多核纳米粒子（MCNP）上的可逆静电吸附。两性离子涂层材料的pH响应性使得能够通过pH的变化可逆地切换PDha@MCNP杂化颗粒的净表面电荷，从而允许在中性pH下可逆地吸附MB并在低pH值下解吸。由此产生的混合材料可以是非常有趣的系统，在水净化的背景下，可逆的吸附研究，在不同的环境条件下，使用紫外可见光谱。使用动态光散射，zeta电位测量，透射电子显微镜，和热重分析的颗粒的特征在于。
The reversible electrostatic adsorption of the cationic dye methylene blue (MB) as a model compound to polydehydroalanine (PDha)-coated magnetic multicore nanoparticles (MCNP) is presented. The pH responsiveness of the zwitterionic coating material enables reversible switching of the net surface charge of the PDha@MCNP hybrid particles by changes in pH and thus allows reversible adsorption of MB at neutral pH and desorption at low pH values. The resulting hybrid materials can be very interesting systems in the context of water purification, and the reversible adsorption is studied using UV-vis spectroscopy under varying surrounding conditions. The particles are characterized using dynamic light scattering, zeta potential measurements, transmission electron microscopy, and thermogravimetric analysis.