Journal of Fluorine Chemistry最新文献

Tuning of Mg–Al LDH-derived nanocomposites via calcination and metal ratio control: Implications for fluoride removal efficiency 通过煅烧和金属比例控制调谐Mg-Al ldh衍生纳米复合材料：对除氟效率的影响

IF 1.9 4区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Fluorine Chemistry

Pub Date : 2026-02-01 DOI: 10.1016/j.jfluchem.2026.110539

Bholanath Panda, Supriya Mandal, Debasish Mondal, Julekha Khatun, Rajesh Singh, Debasis Dhak

Groundwater fluoride contamination is a global issue that endangers drinking water and human health. Long term human developed and environmental management both greatly depends on the defluorination of aqueous solution. The most defluorination method is adsorption, which is both economical and effective. For the defluorination of water in drinking water we have synthesized different magnesium aluminium oxide/layered double hydroxide nanocomposite material (Mg²⁺: Al³⁺ = 1:1, 1:2, and 2:1 abbreviated as MAO11–400, MAO12–500, and MAO21–600 heat treated at 400 °C, 500 °C and 600 °C respectively) by one pot solution combustion method using triethanolamine as a fuel and stabilizer. The thermal stability of the sample was checked by TGA analysis. The crystalline nature of the sample was characterised by XRD study. The functional group of the sample was identified by the FTIR study. The adsorption isotherm and pore volume of the samples were identified by the BET isotherm and BJH method respectively. Different magnesium aluminium oxide/layered double hydroxide nanocomposite materials were investigated by batch experiments. Based on the results, the Freundlich isothermal model could accurately describe the samples fluoride absorption behaviour, and the maximum adsorption capacity according to the Langmuir model was estimated as 133.51 mg/g for the sample MAO12–400. The adsorption kinetics data indicates that it follows pseudo-second-order model, and adsorption equilibrium reached within just 20 min of the sample MAO12–400. The samples have fluoride ion selectivity especially when various ions were present in real water, and work over wide pH range. XPS outcomes indicated that ion exchange between hydroxide ions of the sample and fluoride ions of the sample were mainly responsible for fluoride adsorption. Based on the kinetics data it may be concluded that all the adsorbents are quick and effective adsorbent, and may be used for fluoride mitigation from drinking water.

地下水氟化物污染是危害饮用水和人类健康的全球性问题。长期的人类发展和环境管理都在很大程度上依赖于水溶液的除氟。吸附法除氟效果好，经济有效。本文以三乙醇胺为燃料和稳定剂，采用一锅溶液燃烧法合成了不同氧化镁铝/层状双氢氧化物纳米复合材料（Mg2+: Al3+ = 1:1、1:2和2:1，分别简称为MAO11-400、MAO12-500和MAO21-600，分别经400℃、500℃和600℃热处理）。通过热重分析对样品的热稳定性进行了检验。用XRD对样品的晶体性质进行了表征。通过FTIR研究确定了样品的官能团。采用BET等温线和BJH法分别测定了样品的吸附等温线和孔隙体积。通过批量实验研究了不同的镁铝氧化物/层状双氢氧化物纳米复合材料。结果表明，Freundlich等温模型能较准确地描述样品的氟吸附行为，Langmuir模型估计样品MAO12-400的最大吸附量为133.51 mg/g。吸附动力学数据表明，该吸附过程符合准二阶模型，仅在20 min内达到吸附平衡。样品具有氟离子选择性，特别是当各种离子存在于实际水中时，并且在很宽的pH范围内工作。XPS结果表明，氟化物的吸附主要是由氢氧根离子与氟离子之间的离子交换引起的。根据动力学数据可以得出结论，所有吸附剂都是快速有效的吸附剂，可以用于饮用水中的氟减排。

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引用次数: 0

Organophotocatalytic defluorinative γ-substitution towards monofluoroalkenes 有机光催化对单氟烯烃的脱氟γ-取代

IF 1.9 4区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Fluorine Chemistry

Pub Date : 2026-01-23 DOI: 10.1016/j.jfluchem.2026.110540

Taylor Semeniuk, Dennis D. Toporkov, Tyler de Goede, Jean-Denys Hamel

An organophotocatalytic process for the defluorinative γ-substitution of allylic difluorides with N-alkylanilines, 2-oxoacids and N-protected α-amino acids was devised, which was previously reported using metal-based photoredox catalysts. In several instances, the organophotocatalytic reaction conditions produced yields comparable to or better than the metal-based catalytic processes. Additionally, our new method has expanded the functional group tolerance to include N-acetyl α-amino acids. Fine-tuning each set of reaction conditions to implement organophotocatalysis provided a greener and more affordable avenue towards the synthesis of monofluoroalkenes.

设计了一种用n -烷基苯胺、2-氧酸和n -保护α-氨基酸取代烯丙基二氟化物的有机光催化工艺，该工艺先前使用金属基光氧化还原催化剂进行了报道。在一些情况下，有机光催化反应条件产生的产率与金属基催化过程相当或更好。此外，我们的新方法扩大了功能基耐受性，包括n -乙酰基α-氨基酸。对每组反应条件进行微调以实现有机光催化，为合成单氟烯烃提供了一条更环保、更经济的途径。

引用次数: 0

Surface degradation and modification of traditional Chinese paintings exposed to fluorinated chemical agents 氟化化学试剂对中国画表面降解和改性的影响

IF 1.9 4区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Fluorine Chemistry

Pub Date : 2026-01-11 DOI: 10.1016/j.jfluchem.2026.110538

Muying Ge , Hongru Zhou , Kai Wang , Hideki Yoshioka , Haiting Wu , Ziyi Lu , Yafei Zhou , Biao Zhou

Fires in historic buildings frequently cause severe cultural heritage losses. Fluorinated fire agent can be effectively applied to protect historic buildings. However, fluorinated fire agents may exert certain impacts on the surfaces of artifacts near the fire site. It is essential to elucidate the mechanisms by which fluorinated fire agents affect the surfaces of the interior artworks. This study systematically investigates the surface corrosive and modification effects of five fluorinated fire agents (C₃H₂BrF₃, C₉F₁₈, C₅H₃OF₉, C₆F₁₂O, and C₃H₂ClF₃) on the surface of a selected Chinese painting. Colorimetric analysis, SEM, XRD, and FTIR-ATR were used to assess changes in color, microstructural morphology, crystalline composition, and molecular structure, separately. It is found that C₃H₂BrF₃ caused severe corrosion to the fiber structure and significantly altered the chemical composition. C₅H₃OF₉ induced wrinkling of fibers and disruptions to molecular bonding structures of the painting surface. C₆F₁₂O caused alterations in the crystalline phases and slight structural damage on the surface. C₃H₂ClF₃ and C₉F₁₈ exhibited comparatively milder effects on surfaces. The findings demonstrate that fluorinated fire agents inflict varying degrees of corrosion and chemical modification on the selected painting surface. It elucidates the surface modification mechanisms induced by fluorinated fire extinguishing agents and contributes to the conservation of cultural heritage.

历史建筑火灾经常造成严重的文化遗产损失。氟化灭火剂可以有效地应用于历史建筑的保护。但是，含氟灭火剂会对火灾现场附近的文物表面产生一定的影响。阐明氟化火剂对室内艺术品表面的影响机制是十分必要的。本研究系统考察了五种氟化火剂（C3H2BrF3、C9F18、C5H3OF9、c6f120、C3H2ClF3）对一幅中国画表面的腐蚀和改性效果。用比色分析、SEM、XRD和FTIR-ATR分别评估颜色、微观结构形态、晶体组成和分子结构的变化。发现C3H2BrF3对纤维结构造成了严重的腐蚀，并显著改变了纤维的化学成分。C5H3OF9引起纤维起皱，破坏了涂层表面的分子键结构。c6f120o引起了晶相的改变和表面轻微的结构损伤。C3H2ClF3和C9F18对表面的影响相对温和。研究结果表明，氟化火剂对选定的油漆表面造成不同程度的腐蚀和化学改性。阐明了含氟灭火剂引起的表面改性机理，有助于文物保护。

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引用次数: 0

Suzuki-Miyaura cross-couplings from carboxylic acids via in situ acyl fluoride electrophiles 通过原位酰氟亲电试剂从羧酸中产生的Suzuki-Miyaura交叉偶联

IF 1.9 4区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Fluorine Chemistry

Pub Date : 2026-01-10 DOI: 10.1016/j.jfluchem.2026.110537

Liam N.D. Beardmore, Alexander J. Hague, Steven L. Cobb, William D.G. Brittain

Acyl fluorides have been previously shown to be competent electrophiles in the generation of ketones via Suzuki-Miyaura Cross-Couplings. However, such methodologies rely on isolated, pre-formed acyl fluorides which hampers the scope and flexibility of these approaches. In addition many acyl fluorides are unstable under ambient conditions and they suffer from instability during synthesis, isolation, or storage. Herein we report the use of an in situ generation of acyl fluorides in combination with Suzuki-Miyaura Cross-Coupling to generate di-aryl ketones. This allows the direct conversion of ubiquitous carboxylic acids to highly valuable ketones. The developed methodology was also found to be applicable to a range of aromatic and heteroaromatic carboxylic acids, affording an increased reaction scope compared to contemporary approaches.

酰基氟化物已被证明是通过铃木-宫浦交叉偶联产生酮的亲电试剂。然而，这种方法依赖于分离的、预先形成的酰基氟化物，这妨碍了这些方法的范围和灵活性。此外，许多酰基氟化物在环境条件下是不稳定的，它们在合成、分离或储存过程中遭受不稳定。在这里，我们报告使用原位生成酰基氟化物与Suzuki-Miyaura交叉偶联相结合来生成二芳基酮。这使得无处不在的羧酸直接转化为高价值的酮。开发的方法也被发现适用于一系列芳香族和杂芳香族羧酸，与当代方法相比，提供了更大的反应范围。

引用次数: 0

Fluorine in Pharmaceuticals and Synthetic Strategies for Fluorine-Containing Molecules in Anticancer Drug Discovery: A Review 药物中的氟及抗癌药物中含氟分子的合成策略综述

IF 1.9 4区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Fluorine Chemistry

Pub Date : 2026-01-07 DOI: 10.1016/j.jfluchem.2026.110527

Vivek Kumar , Meenu , M. Shaquiquzzaman, M. Mumtaz Alam, Mymoona Akhter, Darakhshan Parveen, Mohammad Kaleem, Shyama Charan, Md. Khalid Saifullah, Sharba Tasneem

Fluorine has emerged as a key element in modern drug discovery. It influences the pharmacokinetic and pharmacodynamic properties of the drug substance, affecting the overall pharmacological profile. Its impact is reflected in the growing number of FDA-approved fluorine-containing drugs across diverse disease areas, particularly in oncology. This review provides a comprehensive account of FDA-approved fluorine-containing drugs, highlighting their clinical applications in various diseases. Special emphasis is placed on fluorine-containing anticancer agents, tracing their synthetic evolution from 1955 to 2024 as reported in the literature. By integrating structural, mechanistic, and synthetic perspectives, this work emphasises the critical role of fluorination in shaping drug design strategies and therapeutic innovation. Furthermore, a target-oriented classification and SAR evaluation of fluorinated drugs are presented to elucidate how specific fluorine substitutions shape potency, selectivity, and overall therapeutic performance. To support these analyses, a comparative SAR table is included, detailing fluorine positions, their impact on potency and pharmacokinetics, and the mechanistic rationale underlying these effects. The insights presented herein aim to guide future medicinal chemistry efforts toward the rational development of next-generation fluorinated drugs with enhanced efficacy and safety profiles.

氟已成为现代药物发现的关键因素。它影响原料药的药代动力学和药效学性质，影响整体药理学概况。它的影响反映在越来越多的fda批准的含氟药物在不同的疾病领域，特别是在肿瘤学领域。本综述全面介绍了fda批准的含氟药物，重点介绍了它们在各种疾病中的临床应用。特别强调含氟抗癌剂，追踪其合成演变从1955年到2024年的文献报道。通过整合结构、机制和合成的观点，这项工作强调了氟化在塑造药物设计策略和治疗创新中的关键作用。此外，针对氟化药物的目标导向分类和SAR评价提出了阐明特异性氟取代如何影响效力，选择性和整体治疗性能。为了支持这些分析，包括一个比较SAR表，详细说明了氟的位置，它们对效价和药代动力学的影响，以及这些影响的机制基础。本文提出的见解旨在指导未来的药物化学工作，以合理开发下一代氟化药物，提高疗效和安全性。

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引用次数: 0

Paramagnetic centers in ion bombarded poly(vinylidene fluoride) 离子轰击聚偏氟乙烯的顺磁中心

IF 1.9 4区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Fluorine Chemistry

Pub Date : 2026-01-01 DOI: 10.1016/j.jfluchem.2025.110526

Aleksandr V. Akimov , Alexandr S. Shmakov , Rostislav V. Pisarev , Sadulla R. Allayarov , Anna V. Pisareva , Uliana V. Pinaeva , Georgy A. Khromov , Andrey А. Tyutyunov , Alexander N. Nechaev , Pavel Yu. Apel , Yury A. Dobrovolsky , Sergei V. Tokarev , Matthew P. Confer , David A. Dixon

Stabilized radicals formed by irradiation of thin poly(vinylidene fluoride) films with high-energy accelerated ²²Ne⁺⁴, ¹³²Xe⁺²⁶ and ²⁰⁹Bi⁺⁵¹ ions with respective energies of 24, 158 and 670 MeV were studied by EPR, Fourier transform infrared, and UV-visible spectroscopies. The bombarding ions cause significant excitation and ionization along the ion tracks throughout the thickness of the film. The reduction of crystallinity and the formation of unsaturated bonds in the irradiated polymer were explored spectroscopically The presence of alkyl, peroxide, and polyenyl radicals were identified in the spectra of the irradiated polymer; mechanisms for radical formation are proposed. Preliminary freezing of the irradiated films to dry ice temperature and subsequent study after storage at room temperature led to quantitative estimates of the loss of radicals during storage. Computational chemistry was used to predict the thermodynamics of the degradation processes and resulting peroxide radical reactions. Localized energy due to the ion bombardment enabled thermodynamically unfavorable reactions to proceed. The results of the study should be useful for optimization of processes for creating PVDF-based membranes for various applications.

用EPR、傅里叶变换红外光谱和紫外可见光谱研究了高能加速22Ne+4、132Xe+26和209Bi+51离子分别为24、158和670 MeV辐照聚偏氟乙烯薄膜形成的稳定自由基。轰击离子在整个薄膜厚度的离子轨道上引起显著的激发和电离。研究了辐照聚合物中结晶度的降低和不饱和键的形成。在辐照聚合物的光谱中发现了烷基、过氧化物和聚烯基自由基的存在；提出了自由基形成的机理。将辐照膜初步冷冻至干冰温度，并在室温下储存后进行研究，从而定量估计了储存过程中自由基的损失。计算化学用于预测降解过程和过氧化自由基反应的热力学。离子轰击产生的局部能量使热力学上不利的反应得以进行。该研究结果将有助于优化用于各种应用的pvdf基膜的制备工艺。

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引用次数: 0

Integrated spectroscopic, DFT, docking, and molecular dynamics analysis of 4-fluoro-4′-methylchalcone as a potential therapeutic agent for Alzheimer’s disease 4-氟-4′-甲基查尔酮作为阿尔茨海默病潜在治疗剂的综合光谱、DFT、对接和分子动力学分析

IF 1.9 4区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Fluorine Chemistry

Pub Date : 2025-12-20 DOI: 10.1016/j.jfluchem.2025.110525

S. Sumathi, N. Karthik, S. Jeyavijayan

Chalcones are naturally occurring compounds that have sparked interest as potential therapeutic agents because of their potential to prevent Alzheimer's disease (AD). The spectroscopic analyses, such as FT-IR, FT-Raman, UV–Vis, and NMR spectra and computational data, have been studied for 4-fluoro-4′-methylchalcone (FMC). All basic vibrational assignments and geometric parameters were simulated using the DFT/B3LYP/6–311++G(d,p) technique. The UV–Vis spectra have been computed with gas phase and DMSO solvent using time-dependent DFT. NMR spectra of ¹H and ¹³C were acquired, and the experimental data were compared with theoretical calculations of chemical shifts. Reactive sites were identified by studying natural bond orbital studies, Mulliken atomic charges, HOMO-LUMO, charge transfer interactions, and electrostatic potential. Using the Hirshfeld surface and fingerprint methods, the inter- and intramolecular interactions of FMC were examined. The topology studies, such as LOL, ELF, RDG and NCI properties based on wave functions have been thoroughly investigated. Protein 4EY7, associated with Alzheimer’s disease, was chosen for molecular docking studies, where FMC showed a strong binding affinity (−10.6 kcal/mol), comparable to the standard drug donepezil. Molecular dynamics simulations over 100 ns confirmed the stability of the FMC–protein complex, evidenced by favorable RMSD, RMSF, hydrogen bonding, and radius of gyration profiles. In vitro acetylcholinesterase inhibition assays further demonstrated that FMC exhibits activity comparable to standard anti-Alzheimer’s drugs. Thus, the strong protein–ligand interactions and favorable pharmacokinetic properties highlight FMC as a promising lead compound for anti-Alzheimer’s drug development.

查尔酮是一种天然存在的化合物，作为潜在的治疗药物引起了人们的兴趣，因为它们具有预防阿尔茨海默病（AD）的潜力。研究了4-氟-4′-甲基查尔酮（FMC）的红外光谱、拉曼光谱、紫外-可见光谱、核磁共振光谱和计算数据。使用DFT/B3LYP/ 6-311 ++G（d,p）技术模拟了所有基本振动赋值和几何参数。用时变DFT计算了气相和DMSO溶剂的紫外可见光谱。获得了1H和13C的核磁共振谱，并将实验数据与化学位移的理论计算结果进行了比较。通过研究天然键轨道、Mulliken原子电荷、HOMO-LUMO、电荷转移相互作用和静电势来确定反应位点。采用Hirshfeld表面法和指纹图谱法研究了FMC分子间和分子内的相互作用。对基于波函数的LOL、ELF、RDG和NCI等拓扑特性进行了深入的研究。与阿尔茨海默病相关的蛋白4EY7被选择用于分子对接研究，其中FMC显示出很强的结合亲和力（−10.6 kcal/mol），与标准药物多奈哌齐相当。超过100 ns的分子动力学模拟证实了fmc -蛋白复合物的稳定性，证明了良好的RMSD， RMSF，氢键和旋转半径曲线。体外乙酰胆碱酯酶抑制实验进一步表明，FMC具有与标准抗阿尔茨海默病药物相当的活性。因此，强大的蛋白质-配体相互作用和良好的药代动力学特性突出了FMC作为抗阿尔茨海默病药物开发的有前途的先导化合物。

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引用次数: 0

Multigram Synthesis and Physicochemical Characterization of cis-β-CHF2- and cis-β-CF3-α-Proline 顺式β- chf2 -和顺式β- cf3 -α-脯氨酸的多元谱合成及理化性质研究

IF 1.9 4区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Fluorine Chemistry

Pub Date : 2025-12-11 DOI: 10.1016/j.jfluchem.2025.110524

Mykhailo O. Redka , Olga A. Sherstiuk , Anastasia Hurieva , Ivan S. Kondratov , Oleksandr Liashuk , Oleksandr O. Grygorenko

In this work, we present the multigram-scale synthesis of individual cis-β-trifluoromethyl- and cis-β-difluoromethylproline via catalytic hydrogenation (10 % Pd on activated carbon) of the synthetically available pyrrole precursors. Diastereomerically pure materials were obtained via chromatographic separation (CHF₂) or kinetic resolution under mild basic conditions (CF₃). Derivatization of the ethoxycarbonyl residue enabled efficient preparation of aminomethyl products on multigram scale, underscoring the synthetic versatility of these scaffolds. Experimentally established pK_a values of the obtained fluorinated prolines were compared with those of commercially available β-substituted proline analogues and naturally occurring aminoacids, illustrating their suitability for incorporation into peptide frameworks. © 2025 Elsevier Ltd. All rights reserved.

在这项工作中，我们提出了多克尺度合成单个顺式-β-三氟甲基-和顺式-β-二氟甲基脯氨酸通过催化加氢（10% Pd在活性炭上）的合成有效的吡咯前体。通过色谱分离（CHF2）或温和碱性条件下的动力学解析（CF3）得到非对映体纯材料。乙氧羰基残基的衍生化可以在多图尺度上有效地制备氨基甲基产品，强调了这些支架的合成通用性。实验确定的氟化脯氨酸的pKa值与市售的β-取代脯氨酸类似物和天然存在的氨基酸的pKa值进行了比较，说明它们适合纳入肽框架。©2025 Elsevier Ltd.版权所有。

引用次数: 0

Comparative evaluation of quantifiable PFAS generated as byproducts from polytetrafluoroethylene (PTFE) incineration 聚四氟乙烯（PTFE）焚烧副产物产生的可量化PFAS的比较评价

IF 1.9 4区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Fluorine Chemistry

Pub Date : 2025-12-02 DOI: 10.1016/j.jfluchem.2025.110523

Takashi Fujimori , Ayame Saido , Taichi Murakami , Takaki Mine , Hidekazu Okamoto

There is a need for quantitative data on generation of per- and polyfluoroalkyl substances (PFAS) during incineration of polytetrafluoroethylene (PTFE) at the end of the lifecycle of PTFE products. This study quantified the temperature-dependent generation of PFAS byproducts that were formed during the thermal decomposition of PTFE in an oxidizing atmosphere. The PFAS analyzed were C₄ to C₁₈ perfluoroalkyl carboxylic acids (PFCAs) and four compounds of perfluoroalkyl ether carboxylic acids (PFECAs). As a result of the blank tests, trace amounts of PFAS were detected. Therefore, the results for byproduct PFAS were discussed after subtracting the blank values. After incineration, total PFAS byproducts formed at a maximum of 0.028 % (700 °C) and a minimum of 6.9 × 10⁻⁶ % (950 °C) relative to the PTFE input. Comparative evaluation of total PFAS byproducts generated during PTFE incineration showed that the changes observed were comparable to or were one order of magnitude lower than those observed for PFAS byproducts generated during the thermal decomposition of perfluorooctanoic acid (PFOA) and perfluorooctadecanoic acid (PFOcDA). Analysis of individual PFAS data revealed relatively high levels of short-chain PFCAs as byproducts, high-temperature suppression of long-chain PFCAs, characteristic generation patterns of PFECAs, and trace residues of PFOA at elevated temperatures. Based on the distribution behavior of individual PFAS by medium, we found that in addition to adsorption by resins, capture using solutions such as toluene or NaOH is necessary depending on the carbon number. This report demonstrated that decomposition of PTFE at temperatures above 850 °C can suppress the generation of PFAS byproducts to the levels equivalent to or lower than those produced during decomposition of regulated PFAS.

需要在聚四氟乙烯产品生命周期结束时，对聚四氟乙烯（PTFE）焚烧过程中产生的全氟烷基和多氟烷基物质（PFAS）进行定量数据分析。本研究量化了在氧化气氛中聚四氟乙烯热分解过程中形成的PFAS副产物的温度依赖性产生。分析的PFAS为C4至C18全氟烷基羧酸（PFCAs）和四种全氟烷基醚羧酸（PFECAs）化合物。作为空白测试的结果，检测到微量的PFAS。因此，在减去空白值后讨论副产物PFAS的结果。焚烧后，总PFAS副产物形成的最大值为0.028%(700°C)，最小值为6.9 × 10⁻26 %(950°C)，相对于PTFE输入。对聚四氟乙烯焚烧过程中产生的全氟辛烷酸副产物总量的比较评价表明，所观察到的变化与全氟辛酸（PFOA）和全氟十八烷酸（PFOcDA）热分解过程中产生的全氟辛烷酸副产物的变化相当或低一个数量级。对单个PFAS数据的分析显示，短链PFCAs作为副产物的含量相对较高，长链PFCAs的高温抑制，PFCAs的特征生成模式以及高温下PFOA的痕量残留。基于单个PFAS在介质中的分布行为，我们发现除了树脂吸附外，根据碳数的不同，还需要使用甲苯或NaOH等溶液进行捕获。该报告表明，在850°C以上的温度下分解聚四氟乙烯可以将PFAS副产物的产生抑制到相当于或低于受控PFAS分解期间产生的水平。

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引用次数: 0

Temperature-induced modulation and adsorption mechanism: Its effect on deep defluoridation by Mg-Al-LDO 温度诱导调制及其吸附机理：对Mg-Al-LDO深度除氟的影响

IF 1.9 4区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Fluorine Chemistry

Pub Date : 2025-11-29 DOI: 10.1016/j.jfluchem.2025.110518

Jiale Zou, Qing Wang, Peien Huang, Shixun Chen, Yongzhi Tu, Ziming Zhang, Jianxin Chen, Zhifei Ma

The issue of fluoride pollution is posing significant threats to the global ecological environment. Layered Double Hydroxides (LDHs) have attracted widespread attention from researchers due to their high adsorption capacity, strong adaptability, and excellent selectivity. In this study, the Mg/Al-CO₃ LDHs material was synthesized using the co-precipitation method, and the corresponding Layered Double Oxides (LDOs) were further obtained through pyrolysis at various temperatures. The results indicate that as the calcination temperature increases, the maximum adsorption capacity of the material gradually improves, with Mg/Al-LDO-1000 achieving an adsorption capacity of 84.01 mg/g. Notably, these materials maintain stable adsorption performance and good environmental adaptability over a wide pH range of 3 to 11. The structural properties of the materials were further characterized using SEM, XRD, FT-IR, and BET analyses to elucidate the influence of pyrolysis temperature on their adsorption performance. Within the pyrolysis temperature range of 400–600 °C, ion exchange was identified as the dominant adsorption mechanism. However, when the pyrolysis temperature exceeded 800 °C, the mechanism gradually shifted toward chemical adsorption, involving the interaction between F⁻ and Mg²⁺ on the material surface. This work expands the traditional LDHs research, further clarifies the influence of pyrolysis temperature on adsorption performance, and provides new ideas for the development of efficient fluoride removal agents.

氟化物污染问题对全球生态环境构成重大威胁。层状双氢氧化物（Layered Double Hydroxides, LDHs）因其高吸附能力、强适应性和优异的选择性而受到广泛关注。本研究采用共沉淀法合成了Mg/Al-CO₃LDHs材料，并通过不同温度的热解得到了相应的层状双氧化物（LDOs）。结果表明：随着煅烧温度的升高，材料的最大吸附容量逐渐提高，Mg/Al-LDO-1000的吸附容量达到84.01 Mg/ g；值得注意的是，这些材料在3 ~ 11的广泛pH范围内保持稳定的吸附性能和良好的环境适应性。采用SEM、XRD、FT-IR、BET等分析手段对材料的结构性能进行表征，以阐明热解温度对其吸附性能的影响。在400 ~ 600℃热解温度范围内，离子交换吸附为主要吸附机制。然而，当热解温度超过800℃时，热解机理逐渐转向化学吸附，涉及到材料表面的F−和Mg2+的相互作用。本工作拓展了传统LDHs的研究，进一步阐明了热解温度对吸附性能的影响，为高效除氟剂的开发提供了新的思路。

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引用次数: 0