标题：Green synthesis of poly(pyrrole methane) for enhanced adsorption of anionic and cationic dyes from aqueous solution

作者：Yajun Ji, Wenlong Zhang, Honghui Yang, Fang Ma, Feiya Xu

来源出版物：Journal of Colloid and Interface Science，2021年，590卷

DOI：10.1016/j.jcis.2021.01.073

出版年: 2021

文献类型：Article

语种：英文

摘要：The presence and accumulation of dyestuff in the environment is posing great harm to human beings. In this study, a novel poly (pyrrole methane) (PPm) adsorbent with abundant AOH was greenly synthesized via a facile polymerization method. Its physicochemical properties were characterized in detail. Furthermore, the adsorption performance of PPm for anionic dye (acid red G, ARG) and cationic dye (methylene blue, MB) was comparatively studied with a typical dye adsorbent (polyprrrole, PPy). The results revealed that the adsorption of ARG or MB onto PPm followed pseudo-second-order model and Langmuir mode. The adsorption processes were endothermic and spontaneous. The maximum capacities of PPm to adsorb ARG and MB were 555.56 mg/g and 99.11 mg/g, which were about 10 and 2 times higher than that of PPy, respectively. PPm could be reused for 5 cycles without a significant decrease of its adsorption rate. The adsorption of ARG and MB is mainly attributed to electrostatic interaction and hydrogen bonding between ARG or MB and AOH in PPm. Additionally, ARG could be adsorbed by ion exchange with the doped Cl in PPm. Therefore, this study provides a new strategy to synthesis efficient adsorbent for the removal of both anionic and cationic dyes.

关键词：Poly(pyrrole methane)；Polypyrrole；Adsorption；Acid red G；Methylene blue

影响因子：8.128

论文连接：https://doi.org/10.1016/j.jcis.2021.01.073