College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China.
College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China.
J Colloid Interface Sci. 2017 Jan 1;485:39-50. doi: 10.1016/j.jcis.2016.09.025. Epub 2016 Sep 13.
The removal of toxins is important due to the damage to aquatic environment. In this work, a facile and green approach based on mussel-inspired coatings was used to fabricate amino-coated particles via the reaction between amine and catechol, using hexanediamine as the representative amine. The particles were characterized by Attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR), X-ray photoelectron spectroscopy (XPS), thermo gravimetric analysis (TGA), and scanning electron microscopy (SEM). The particles showed selective adsorption capability to Congo red (CR) and the adsorption process fitted the pseudo-second-order model, the intraparticle diffusion model, the Langmuir isotherm, the Freundlich isotherm and the Sips isotherm well. Furthermore, this approach was verified to have applicability to various amines such as diethylenetriamine (DETA), triethylenetetramine (TETA) and tetraethylenepentamine (TEPA), and the amino-coated particles exhibited diverse adsorption capacities to CR, Cu and bilirubin. Considering that the approach is easy to operate and the whole preparation process is in an aqueous solution, it is believed that the facile, green and economical approach has great potential to prepare particles for wastewater treatment.
由于对水生环境的破坏，去除毒素很重要。在这项工作中，使用了一种基于贻贝启发的涂层的简便、绿色的方法，通过胺和儿茶酚之间的反应，使用六亚甲基二胺作为代表性胺来制备氨基涂层颗粒。通过衰减全反射傅里叶变换红外光谱（ATR-FTIR）、X 射线光电子能谱（XPS）、热重分析（TGA）和扫描电子显微镜（SEM）对颗粒进行了表征。颗粒对刚果红（CR）表现出选择性吸附能力，吸附过程符合准二级模型、颗粒内扩散模型、朗缪尔等温线、弗伦德利希等温线和 Sips 等温线。此外，该方法已被证明适用于各种胺，如二乙烯三胺（DETA）、三亚乙基四胺（TETA）和四乙烯五胺（TEPA），并且氨基涂层颗粒对 CR、Cu 和胆红素表现出不同的吸附能力。考虑到该方法易于操作，整个制备过程在水溶液中进行，因此相信这种简便、绿色和经济的方法在制备用于废水处理的颗粒方面具有很大的潜力。
