Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Reusable Hyperbranched Polyethylenimine-Functionalized Ethyl Cellulose Film for the Removal of Phosphate with Easy Separation
ACS Omega ( IF 3.7 ) Pub Date : 2020-12-24 , DOI: 10.1021/acsomega.0c04955 Enmin Zong 1, 2 , Binlu Guo 1 , Jiayao Yang 3 , Chao Shi 3 , Shengtao Jiang 1 , Zhongqing Ma 3 , Xiaohuan Liu 3
ACS Omega ( IF 3.7 ) Pub Date : 2020-12-24 , DOI: 10.1021/acsomega.0c04955 Enmin Zong 1, 2 , Binlu Guo 1 , Jiayao Yang 3 , Chao Shi 3 , Shengtao Jiang 1 , Zhongqing Ma 3 , Xiaohuan Liu 3
Affiliation
|
The design of a reusable film adsorbent with easy solid–liquid separation for the removal of phosphate is necessary and significant but remains hugely challenging. Herein, the hyperbranched polyethylenimine-functionalized ethyl cellulose (HPEI-EC) film was successfully synthesized by a one-step solution-casting method. The structure and elemental composition of the HPEI-EC film were characterized by Fourier transform-infrared spectroscopy, X-ray photoelectron spectroscopy, and scanning electron microscopy. The phosphate adsorption capacity of the HPEI-EC film was 15.53 mg g–1, which is 12 times higher than that of EC. Significantly, the elongation at break of the HPEI-EC film was 13.43%, which is higher than that of the EC film (8.9%), and the HPEI-EC film had a considerable tensile strength of 13.21 MPa. Such good mechanical properties of the HPEI-EC film bring about the advantage of the saturated HPEI-EC film, allowing it to be easily taken out using a pair of tweezers, which significantly reduces the operation time and saves the cost in the application process. Furthermore, the HPEI-EC film possessed good reusability, and 71.6% of the original adsorption capacity of phosphate was retained even after five cycles. Moreover, the electrostatic interaction between protonated the amine group (-NH3+) and the phosphate ion (PO43–) is mainly responsible for the adsorption process. This study presents a low-cost and reusable film adsorbent for the effective removal of phosphate from water and provides an easy solid–liquid separation method for use in the adsorption field.
中文翻译：
可重复使用的超支化聚乙烯亚胺官能化乙基纤维素膜，用于轻松分离去除磷酸盐
设计一种可重复使用且易于固液分离的薄膜吸附剂来去除磷酸盐是必要且重要的，但仍然具有巨大的挑战性。在此，通过一步溶液流延法成功合成了超支化聚乙烯亚胺功能化乙基纤维素（HPEI-EC）薄膜。通过傅里叶变换红外光谱、X射线光电子能谱和扫描电子显微镜对HPEI-EC薄膜的结构和元素组成进行了表征。 HPEI-EC膜对磷酸盐的吸附能力为15.53 mg g –1 ，是EC的12倍。值得注意的是，HPEI-EC薄膜的断裂伸长率为13.43%，高于EC薄膜的断裂伸长率（8.9%），并且HPEI-EC薄膜具有相当大的拉伸强度，为13.21 MPa。 HPEI-EC薄膜良好的机械性能带来了饱和HPEI-EC薄膜的优势，可以使用镊子轻松取出，大大减少了操作时间，节省了应用过程中的成本。此外，HPEI-EC膜具有良好的可重复使用性，即使经过5次循环，仍保留了71.6%的原始磷酸盐吸附能力。此外，质子化的胺基（-NH 3 + ）和磷酸根离子（PO 4 3– ）之间的静电相互作用主要负责吸附过程。本研究提出了一种低成本且可重复使用的薄膜吸附剂，用于有效去除水中的磷酸盐，并为吸附领域提供了一种简单的固液分离方法。
更新日期：2021-01-12
中文翻译：
可重复使用的超支化聚乙烯亚胺官能化乙基纤维素膜，用于轻松分离去除磷酸盐
设计一种可重复使用且易于固液分离的薄膜吸附剂来去除磷酸盐是必要且重要的，但仍然具有巨大的挑战性。在此，通过一步溶液流延法成功合成了超支化聚乙烯亚胺功能化乙基纤维素（HPEI-EC）薄膜。通过傅里叶变换红外光谱、X射线光电子能谱和扫描电子显微镜对HPEI-EC薄膜的结构和元素组成进行了表征。 HPEI-EC膜对磷酸盐的吸附能力为15.53 mg g –1 ，是EC的12倍。值得注意的是，HPEI-EC薄膜的断裂伸长率为13.43%，高于EC薄膜的断裂伸长率（8.9%），并且HPEI-EC薄膜具有相当大的拉伸强度，为13.21 MPa。 HPEI-EC薄膜良好的机械性能带来了饱和HPEI-EC薄膜的优势，可以使用镊子轻松取出，大大减少了操作时间，节省了应用过程中的成本。此外，HPEI-EC膜具有良好的可重复使用性，即使经过5次循环，仍保留了71.6%的原始磷酸盐吸附能力。此外，质子化的胺基（-NH 3 + ）和磷酸根离子（PO 4 3– ）之间的静电相互作用主要负责吸附过程。本研究提出了一种低成本且可重复使用的薄膜吸附剂，用于有效去除水中的磷酸盐，并为吸附领域提供了一种简单的固液分离方法。
京公网安备 11010802027423号