摘要
污水治理是当今社会面临的一大难题。通过傅-克反应以三聚氰氯和三苯胺为原料合成一种新型共价三嗪聚合物并加镍磁化用于污水中硝基苯酚的吸附。从化学结构上看,三嗪环和芳香环的存在提供疏水和π-π相互作用。测得三嗪-三苯胺材料S BET=680 m^(2)·g^(-1),孔径在2 nm左右,磁化后的比表面积仅为170 m^(2)·g^(-1),这与Ni占据了少量吸附位点有关。从热力学、动力学角度介绍了吸附过程和吸附机理,同时评价了不同pH和盐浓度对吸附的影响。吸附实验表明,对硝基苯酚和2,4-二硝基苯酚的吸附主要为物理吸附,而2,4,6-三硝基苯酚的吸附为化学吸附。
Nowadays,the sewage treatment is a major problem in society.A novel covalent triazine polymer was synthesized from cyanuric chloride and triphenylamine by Friedel-Crafts reaction and magnetized with nickel for the adsorption of nitrophenol in sewage.From the chemical structure,the presence of triazine and aromatic rings provides hydrophobic and π-π interactions.The Brunauer-Emmett-Teller(BET)surface area of triazine-trianiline material is 680 m^(2)·g^(-1) and the pore size is about 2 nm.The specific surface area after magnetization is only 170 m^(2)·g^(-1).The adsorption process and mechanism were introduced from thermodynamics and kinetics,and the effects of different pH values and salt concentrations on the adsorption were evaluated.Adsorption experiments show that the adsorptions of p-nitrophenol and 2,4-dinitrophenol belong to the physical adsorption,while the adsorption of 2,4,6-trinitrophenyl phenol belongs to chemical adsorption.
作者
王媛
甘修培
付蒙蒙
赵文杰
WANG Yuan;GAN Xiupei;FU Mengmeng;ZHAO Wenjie(College of Chemistry and Chemical Engineering,Henan University of Technology,Zhengzhou 450001,Henan,China)
出处
《化学研究》
CAS
2021年第2期152-159,共8页
Chemical Research
基金
国家自然科学基金资助项目(21675040)
河南省高校科技创新人才资助项目(20HASTIT007)。
