Preparation of hollow tubular polyaniline fibers and adsorption studies of sulfadiazine

IF 4.7 3区材料科学 Q1 CHEMISTRY, APPLIED Microporous and Mesoporous Materials Pub Date : 2025-05-15 Epub Date: 2025-03-06 DOI:10.1016/j.micromeso.2025.113581

Huixian Liu , Guohao Zhai , Nana Xue , Yuxuan Ma , Shanshan Wang , Shuai Liu

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Abstract

To address the problem of water pollution caused by antibiotics, hollow tubular polyaniline (PANI) was prepared using a chemical oxidation method to study the adsorption behavior of sulfadiazine (SDZ) in water. The results showed that the prepared material was hollow tubular emerald green imine-type PANI with abundant amino and imino groups and a large specific surface area, capable of high-efficiency adsorption. XRD, XPS, BET, FT-IR, and Raman demonstrated that the adsorption mechanism of the pollutants by PANI mainly involves electrostatic attraction, hydrogen-bonding adsorption, hydrophobic force interaction between benzene rings, and π-π conjugate adsorption. The adsorption behavior is more consistent with the pseudo-secondary kinetic equation, and the adsorption isotherms at different temperatures conformed to the model differently. The adsorption thermodynamic experiments showed that the adsorption of SDZ by the material was spontaneous and exothermic. The prepared PANI has excellent adsorption and removal ability for SDZ in water, and the theoretical adsorption value fitted by its Langmuir isotherm model can reach 22.39 mg/g.

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中空管聚苯胺纤维的制备及对磺胺嘧啶的吸附研究

为解决抗生素对水体的污染问题，采用化学氧化法制备了中空管状聚苯胺（PANI），研究了其对磺胺嘧啶（SDZ）在水中的吸附行为。结果表明，制备的材料为空心管状翠绿色亚胺型聚苯胺，具有丰富的氨基和亚胺基团，比表面积大，具有高效吸附能力。XRD、XPS、BET、FT-IR、Raman等实验结果表明，聚苯胺对污染物的吸附机理主要包括静电吸引、氢键吸附、苯环间疏水力相互作用和π-π共轭吸附。吸附行为更符合拟二次动力学方程，不同温度下的吸附等温线与模型符合程度不同。吸附热力学实验表明，材料对SDZ的吸附是自发的、放热的。制备的聚苯胺对水中SDZ具有优异的吸附和去除能力，其Langmuir等温线模型拟合的理论吸附值可达22.39 mg/g。

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来源期刊

Microporous and Mesoporous Materials 化学-材料科学：综合

CiteScore

10.70

自引率

5.80%

发文量

649

审稿时长

26 days

期刊介绍： Microporous and Mesoporous Materials covers novel and significant aspects of porous solids classified as either microporous (pore size up to 2 nm) or mesoporous (pore size 2 to 50 nm). The porosity should have a specific impact on the material properties or application. Typical examples are zeolites and zeolite-like materials, pillared materials, clathrasils and clathrates, carbon molecular sieves, ordered mesoporous materials, organic/inorganic porous hybrid materials, or porous metal oxides. Both natural and synthetic porous materials are within the scope of the journal. Topics which are particularly of interest include: All aspects of natural microporous and mesoporous solids The synthesis of crystalline or amorphous porous materials The physico-chemical characterization of microporous and mesoporous solids, especially spectroscopic and microscopic The modification of microporous and mesoporous solids, for example by ion exchange or solid-state reactions All topics related to diffusion of mobile species in the pores of microporous and mesoporous materials Adsorption (and other separation techniques) using microporous or mesoporous adsorbents Catalysis by microporous and mesoporous materials Host/guest interactions Theoretical chemistry and modelling of host/guest interactions All topics related to the application of microporous and mesoporous materials in industrial catalysis, separation technology, environmental protection, electrochemistry, membranes, sensors, optical devices, etc.