Interdisciplinary Laboratory for Advanced Materials-LIMAV, UFPI, 64049-550 Teresina, PI, Brazil.
Federal Institute of Education, Açailândia Campus, IFMA, 65930-000, Maranhão, MA, Brazil.
Carbohydr Polym. 2019 Dec 1;225:115246. doi: 10.1016/j.carbpol.2019.115246. Epub 2019 Aug 25.
A new adsorbent matrix (Cel-SiN) for the adsorption of the dye eosin yellow (EY) and the drug amitriptyline (AMI) from aqueous media has been synthesized. The Cel-SiN matrix was obtained via chemical modification of cellulose with (3-aminopropyl)trimethoxysilane. Successful modification was confirmed using Fourier transform infrared (FTIR) and C and Si solid state nuclear magnetic resonance (SSNMR) spectroscopies, thermal analysis (TG/DTG), X-ray diffraction (XRD), and elemental analysis. The effects of pH, contact time, concentration, and temperature were evaluated in batch adsorption tests. Cel-SiN efficiently adsorbed AMI and EY in aqueous media, with maximum adsorption capacities of 92.28 ± 1.34 mg g for AMI (pH = 7, time =240 min, and temperature = 318 K) and 61.0 ± 0.36 mg g for EY (pH = 5, time =80 min, and temperature = 298 K). The adsorption process occurs mainly via hydrogen bonding interactions for AMI and electrostatic interactions for EY.
一种用于从水介质中吸附染料曙红黄（EY）和药物阿米替林（AMI）的新型吸附剂基质（Cel-SiN）已被合成。Cel-SiN 基质是通过纤维素与（3-氨丙基）三甲氧基硅烷的化学修饰获得的。成功的修饰通过傅里叶变换红外（FTIR）和 C 和 Si 固态核磁共振（SSNMR）光谱、热分析（TG/DTG）、X 射线衍射（XRD）和元素分析得到确认。在批处理吸附实验中评估了 pH、接触时间、浓度和温度的影响。Cel-SiN 在水介质中有效地吸附 AMI 和 EY，对 AMI 的最大吸附容量为 92.28±1.34mg g（pH=7，时间=240 min，温度=318 K），对 EY 的最大吸附容量为 61.0±0.36mg g（pH=5，时间=80 min，温度=298 K）。吸附过程主要通过 AMI 的氢键相互作用和 EY 的静电相互作用发生。
