开发多功能工程吸附剂是从各种污染物中净化环境的有效策略。在这项研究中,多官能化碳框架复合材料,MSC-CFM,是合成的。该复合材料包含富含各种官能团的芳香碳骨架,包括磁性纳米粒子,羟基,和氨基。MSC-CFM用于净化酸性废水中的Cr(VI)和多环芳族氮化物(对二甲基氨基偶氮苯磺酸(DAS)和二苯基-4,4'-二[钠(偶氮-2-)-1-氨基-萘-4-磺酸盐](DANS))。MSC-CFM对Cr(VI)的吸附能力,DAS和DANS,使用Langmuir等温线模型量化,分别为161.28、310.83和1566.09mg/g,分别。Cr(VI)和PAHs(DAS和DANS)是由化学吸附控制的单层吸附。MSC-CFM在长达6次吸附和解吸循环后可以保持良好的吸附效率。多环芳香氮化物的存在促进了Cr(VI)在Cr(VI)-DAS/DANS二元体系中的吸附。MSC-CFM去除污染物涉及多种未报道的反应机理,比如静电吸引,氧化还原反应,阴离子交换,分子间氢键,络合反应,π-π相互作用,和阴离子-π相互作用。MSC-CFM,丰富了各种官能团,是一种很有前途的环保新材料。它在处理污染废水中具有很好的实际应用潜力。
Developing multifunctional engineered adsorbents is an effective strategy for decontaminating the environment from various pollutants. In this study, a polyfunctionalized carbon-framework composite, MSC-CFM, was synthesized. The composite comprises an aromatic carbon framework enriched with various functional groups, including magnetic nanoparticles, hydroxyl, and amino groups. MSC-CFM was used to decontaminate Cr(VI) and polycyclic aromatic nitrides (p-dimethylaminoazobenzene sulfonate (DAS) and diphenyl-4, 4 \'-di [sodium (azo-2 -) -1-amino-naphthalene-4-sulfonate] (DANS)) from acidic wastewater. The adsorption capacities of MSC-CFM for Cr(VI), DAS and DANS, quantified using the Langmuir isotherm model, were 161.28, 310.83, and 1566.09 mg/g, respectively. Cr(VI) and PAHs (DAS and DANS) were monolayer adsorbed controlled by chemisorption. MSC-CFM could maintain good adsorption efficiency after up to 6 adsorption and desorption cycles. The presence of polycyclic aromatic nitrides promoted the adsorption of Cr(VI) in the Cr(VI)-DAS/DANS binary systems. Removal of pollutants by MSC-CFM involved a variety of unreported reaction mechanisms, such as electrostatic attraction, redox reaction, anion exchange, intermolecular hydrogen bonding, complexation reaction, π-π interaction, and anion-π interaction. MSC-CFM, enriched with a variety of functional groups, is a promising new material for environmental protection. It has good potential for practical application in treating polluted wastewater.