吸附
热重分析
弗伦德利希方程
朗缪尔
化学
傅里叶变换红外光谱
热重分析
褐藻酸
亚甲蓝
朗缪尔吸附模型
Zeta电位
核化学
X射线光电子能谱
物理化学
有机化学
无机化学
材料科学
化学工程
催化作用
纳米颗粒
纳米技术
工程类
光催化
生物化学
作者
Lemya Boughrara,Farouk Zaoui,M’hamed Guezzoul,Fatima Zohra Sebba,Boumediene Bounaceur,Seghier Ould Kada
标识
DOI:10.1016/j.ijbiomac.2022.02.087
摘要
In this paper, the application of ester materials prepared by grafting different carbon chain lengths of diols in alginic acid (AA) by a simple, fast and efficient method for the adsorption of methylene blue (MB) is studied. The AA ester derivatives are characterized by Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), thermogravimetric analysis (TGA), derivative thermogravimetry (DTG), scanning electron microscopy (SEM), atomic force microscopy (AFM), and Zeta potential before and after MB adsorption. This study shows a significant improvement in the adsorption capacity of MB by AA after its esterification with a Qmax value up to 454.545 mg/g for the best adsorbent "Poly(AA-g-EG)". The experimental data are studied according to two isothermal models (Langmuir and Freundlich) and two kinetic models (pseudo-second order and intra-particle diffusion). The adsorption of MB is also evaluated thermodynamically. An adsorption mechanism of MB is established.
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