Inorganic Chemistry Communications最新文献_第5页

Sustainable electrospun PAN@SiO₂*Ag nanofiber composites for efficient removal of toxic Cr(VI) from contaminated water 可持续静电纺PAN@SiO₂*Ag纳米纤维复合材料，用于有效去除污染水中的有毒Cr（VI）

IF 5.4 3区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Communications

Pub Date : 2026-02-02 DOI: 10.1016/j.inoche.2026.116266

Mohamed R. El-Aassar

Hexavalent chromium (Cr(VI)), a highly toxic and persistent water pollutant, poses serious environmental and public health risks. Therefore, the development of effective, reusable, and nanostructured adsorbents is essential for improving wastewater treatment technologies. In this study, electrospun polyacrylonitrile@silica*silver (PAN@SiO₂*Ag) composite nanofibers were developed and characterized to synergistically enhance surface functionality, adsorption efficiency, and reusability for Cr(VI) removal. PAN@SiO₂*Ag composite nanofibers were fabricated via a sol–gel synthesis of SiO₂Ag followed by electrospinning and characterized using FE-SEM, TEM, FTIR, XRD, TGA, and BET analyses. The nanofibers exhibited enhanced mesoporosity and thermal stability, achieving a maximum Cr(VI) adsorption capacity of 221.73 mg/g at pH 2.0, with adsorption kinetics following a pseudo-second-order model and equilibrium behavior best described by the Freundlich isotherm. Adsorption kinetics were well described by a pseudo-second-order model, while equilibrium data followed the Freundlich isotherm, indicating heterogeneous, multilayer adsorption. Thermodynamic analysis indicated that the adsorption process was both spontaneous and endothermic, reflecting favorable interfacial interactions between Cr(VI) ions and the composite surface. Moreover, the nanofibers exhibited excellent regeneration and reuse performance over multiple adsorption–desorption cycles, highlighting their structural stability and practical applicability. These results demonstrate the practical potential of PAN@SiO₂*Ag nanofibers as a potential and reusable way to remove heavy metals from wastewater treatment systems.

六价铬（Cr(VI)）是一种剧毒和持久性水污染物，对环境和公众健康构成严重风险。因此，开发有效的、可重复使用的纳米结构吸附剂对于改善废水处理技术至关重要。在这项研究中，电纺丝polyacrylonitrile@silica*银（PAN@SiO₂*Ag）复合纳米纤维被开发和表征，以协同增强表面功能，吸附效率和可重复使用性去除Cr（VI）。采用溶胶-凝胶法制备了PAN@SiO₂*Ag复合纳米纤维，并采用FE-SEM、TEM、FTIR、XRD、TGA和BET等手段对其进行了表征。纳米纤维表现出增强的介孔性和热稳定性，在pH为2.0时最大吸附Cr（VI）容量为221.73 mg/g，吸附动力学符合准二阶模型，平衡行为最好用Freundlich等温线描述。吸附动力学用拟二阶模型很好地描述，而平衡数据遵循Freundlich等温线，表明非均相的多层吸附。热力学分析表明，吸附过程是自发和吸热的，反映了Cr（VI）离子与复合材料表面良好的界面相互作用。此外，纳米纤维在多次吸附-解吸循环中表现出优异的再生和再利用性能，突出了其结构稳定性和实用性。这些结果证明了PAN@SiO₂*Ag纳米纤维作为一种潜在的可重复使用的方法从废水处理系统中去除重金属的实际潜力。

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引用次数: 0

Photophysical behavior and selective Cu(II) and Hg(II) sensing of a Cyclen-Dansyl macrocyclic ligand with thiourea functionalization 具有硫脲功能化的环-丹酰大环配体的光物理行为和选择性Cu（II）和Hg（II）传感

IF 5.4 3区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Communications

Pub Date : 2026-02-02 DOI: 10.1016/j.inoche.2026.116289

Inês Pereira-Gomes , Frederico Duarte , Georgi M. Dobrikov , Atanas Kurutos , Ivaylo Slavchev , Clara S.B. Gomes , José Luis Capelo-Martinez , Hugo M. Santos , Carlos Lodeiro

A cyclen-dansyl derivative functionalized with three thiourea moieties (L1) was synthesized and fully characterized by a combination of techniques such as UV–Vis absorption and fluorescence spectroscopy in various solvents, ¹H and ¹³C NMR, Mass Spectrometry, FTIR spectroscopy, exhibiting notable fluorescent quantum yields of up to 49%. Its solvatochromic behavior, verified by the yellow to greenish emission in solution, was analyzed using the Kamlet-Taft equation, confirming a dependence of the emission properties based on the solvent polarity. Furthermore, L1 was evaluated as a fluorescent sensor for heavy metal ions, Co²⁺, Ni²⁺, Cu⁺, Cu²⁺, Hg⁺, Hg²⁺, Pb²⁺, Ag⁺, Zn²⁺, and Cd²⁺, particularly Cu²⁺ and Hg²⁺, displaying a remarkable fluorescence quenching effect upon coordination. The minimal LOD and LOQ values were found toward Hg(II) being 1.0 and 3.0 μM, respectively, with a significant association constant (logK_ass = 10.432). The corresponding [HgL1](OTf)₂ complex was also synthesized and characterized, providing additional insight into the coordination behavior and the actual sensing mechanism of the ligand.

合成了一种具有3个硫脲基团（L1）官能化的环丹酰衍生物，并通过紫外可见吸收光谱、荧光光谱、1H和13C NMR、质谱、FTIR光谱等综合技术对其进行了表征，其荧光量产率高达49%。利用Kamlet-Taft方程分析了其溶剂致变色行为，并通过溶液中的黄色至绿色发射来验证，证实了基于溶剂极性的发射性质的依赖性。此外，L1作为重金属离子Co2+、Ni2+、Cu+、Cu2+、Hg+、Hg2+、Pb2+、Ag+、Zn2+和Cd2+的荧光传感器，特别是Cu2+和Hg2+，在配位时表现出显著的荧光猝灭效应。对Hg（II）的最小LOD和LOQ值分别为1.0 μM和3.0 μM，具有显著的关联常数（logKass = 10.432）。合成并表征了相应的[HgL1](OTf)2配合物，为进一步了解配体的配位行为和实际传感机制提供了新的思路。

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引用次数: 0

Reductive hydroxymethylation reactions catalyzed by recyclable ruthenium complexes immobilized on Fe3O4 magnetic nanoparticles Fe3O4磁性纳米颗粒固定化可回收钌配合物催化还原羟甲基化反应

IF 5.4 3区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Communications

Pub Date : 2026-02-02 DOI: 10.1016/j.inoche.2026.116228

Rinae N. Mudau, Thandeka A. Tshabalala

The immobilization of 2-((E)-1-(3-(triethoxysilyl)propylimino)ethyl)phenol (L1) on Fe₃O₄ magnetic nanoparticles afforded the immobilized ligands (L2). Reactions of Fe₃O₄-(E)-2-(1-((3-(triethoxysilyl)propyl)imino)ethyl)phenol (L2) with the appropriate metal precursors ([Ru₃CO₁₂], [RuHClCO(PPh₃)₃] and [Ru(p-cymene)Cl₂]₂) afforded the respective immobilized ruthenium complexes (C1 – C3). The immobilized ligand (L2) and complexes (C1 – C3) were characterized by different solid-state techniques such as FT-IR- spectroscopy, powder X-ray diffraction (PXRD), Brunauer–Emmett–Teller (BET), thermogravimetric analyses (TGA), scanning electron microscopy - Energy-dispersive X-ray spectroscopy (SEM-EDX), transmission electron microscopy (TEM), X-ray Photoelectron Spectroscopy (XPS) and inductively coupled plasma optical emission spectroscopy (ICP-OES). The immobilized catalysts were active in the hydroxymethylation of cyclohexene, with 100% selectivity towards alcohol. The catalytic performance of complex C1 was strongly influenced by the nature of the substrate, with cycloalkenes showing complete selectivity towards linear alcohols. In contrast, styrene under the same conditions produced a mixture of alcohols and aldehydes. All catalysts were recycled at least three times with no loss in activity and conversion.

将2-(（E)-1-（3-（三乙氧基硅基）丙基）乙基）苯酚（L1）固定在Fe3O4磁性纳米颗粒上，得到了固定配体（L2）。Fe3O4-（E)-2-（1-（3-（三乙氧基硅基）丙基）亚氨基）乙基）苯酚（L2）与相应的金属前驱体([Ru3CO12], [RuHClCO（PPh3)3]和[Ru（对花枝烃）Cl2]2）反应，得到各自的固定化钌配合物（C1 - C3）。采用FT-IR光谱、粉末x射线衍射（PXRD）、Brunauer-Emmett-Teller （BET）、热重分析（TGA）、扫描电子显微镜-能量色散x射线能谱（SEM-EDX）、透射电子显微镜（TEM）、x射线光电子能谱（XPS）和电感耦合等离子体发射光谱（ICP-OES）等固态技术对固定化配体（L2）和配合物（C1 - C3）进行了表征。固定化催化剂对环己烯的羟甲基化反应具有活性，对醇的选择性为100%。配合物C1的催化性能受到底物性质的强烈影响，环烯烃对线性醇表现出完全的选择性。相反，苯乙烯在同样的条件下产生醇和醛的混合物。所有催化剂至少回收三次，活性和转化率均无损失。

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引用次数: 0

Investigating the influence of CNT/Fe2O3 hybrid nanofiller on the physicochemical properties of PVA/PEO nanocomposites 研究了CNT/Fe2O3杂化纳米填料对PVA/PEO纳米复合材料理化性能的影响

IF 5.4 3区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Communications

Pub Date : 2026-02-02 DOI: 10.1016/j.inoche.2026.116287

H.M. Ragab , N.S. Diab , Rosilah Ab Aziz , Shimaa Mohammed Aboelnaga , S.A. Al-Balawi , M.O. Farea , M.A. Morsi

The goal of this research is to develop novel polymer nanocomposites (PNC) based on a PVA/PEO matrix that are combined with hematite (Fe₂O₃) nanoparticles and multi-walled carbon nanotubes (MWCNTs) to create a nanohybrid system. The polymer matrix's dielectric performance and energy storage capacity were significantly improved by using the nanohybrid's exceptional electrical properties. Low concentrations of MWCNTs/Fe₂O₃ are incorporated in the study to improve material performance in an economical manner. Fourier-transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) structural characterization revealed that the addition of MWCNTs/Fe2O3 disrupted the crystalline domains, promoting amorphous regions and improving charge transport pathways. Strong electronic interactions between the integrated nanohybrid and the polymer network are suggested by the observed decrease in the optical bandgap using UV–Vis spectroscopy. The energy gap decreased from 5.13 eV for the pure PVA/PEO to 3.90 eV at 8 wt% MWCNTs/Fe₂O₃, associated with increased localized defect states. The presence of MWCNTs/Fe2O3 increases interfacial polarization, which results in higher dielectric constants and better conductivity at lower frequencies, according to measurements of electrical conductivity and dielectric characteristics. These findings show that the produced films underwent substantial changes, highlighting the improved structural, optical, electrical, and dielectric properties of the flexible PVA/PEO–MWCNTs/Fe₂O₃ films.

该研究的目标是开发基于PVA/PEO基体的新型聚合物纳米复合材料（PNC），该复合材料与赤铁矿（Fe₂O₃）纳米颗粒和多壁碳纳米管（MWCNTs）相结合，以创建纳米混合体系。利用纳米杂化材料优异的电学性能，聚合物基体的介电性能和储能能力得到了显著提高。研究中加入了低浓度的MWCNTs/Fe₂O₃，以经济的方式提高材料的性能。傅里叶变换红外光谱（FTIR）和x射线衍射（XRD）结构表征表明，MWCNTs/Fe2O3的加入破坏了晶体结构，促进了非晶态区，改善了电荷传输途径。利用紫外可见光谱观察到的光学带隙减小表明，集成纳米杂化物与聚合物网络之间存在强电子相互作用。当MWCNTs/Fe₂O₃重量为8 wt%时，能隙从纯PVA/PEO的5.13 eV减小到3.90 eV，局域缺陷态增加。根据电导率和介电特性的测量，MWCNTs/Fe2O3的存在增加了界面极化，从而导致更高的介电常数和更低频率下的导电性。这些发现表明，制备的薄膜发生了实质性的变化，突出了柔性PVA/ PEO-MWCNTs /Fe₂O₃薄膜的结构、光学、电学和介电性能的改善。

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引用次数: 0

LED light-induced photocatalytic degradation of sulfamethoxazole utilizing Bi2O3-POMES derived biochar composite 利用Bi2O3-POMES衍生生物炭复合材料的LED光催化降解磺胺甲恶唑

IF 5.4 3区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Communications

Pub Date : 2026-02-02 DOI: 10.1016/j.inoche.2026.116240

Mohammad Nirwanshah Nasaruddin , Noor Haida Mohd Kaus , Nuraina Maisarah Saperina , Suresh Sagadevan , Muhammadin Hamid

In this study, Bi₂O₃- palm oil mill effluent sludge (POMES) derived biochar (BC) composite was prepared for the photocatalytic degradation of sulfamethoxazole (SMX). In addition, energy- efficient LED irradiation was employed as a sustainable alternative to conventional high-energy light sources. The composite was synthesised via solvothermal technique by utilizing ethylene glycol as the solvent and POMES derived biochar as the porous support. Various precursor concentrations of Bi(NO₃)₃·5H₂O (5–20 mmol) were incorporated with a fixed biochar loading (0.1 g) to optimize the photocatalytic performance. Structural and morphological analyses have confirmed the successful integration of Bi₂O₃ nanoparticles onto the biochar matrix. The optimised BCB-10 composite has exhibited homogeneous Bi₂O₃ dispersion, increased surface area, and improved textural properties. X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, and ultraviolet-visible diffuse reflectance spectroscopy (UV–DRS) analyses have confirmed the crystalline stability, functional group interactions, and enhanced visible-light absorption with a reduced band gap.

Photoluminescence (PL) results have shown the reduced charge recombination, contributing to superior photocatalytic activity. Under visible LED irradiation, Bi₂O₃–biochar (BCB- 10) has achieved 64.04% degradation of 10 mg L^-1 SMX within 180 min using a catalyst loading of 0.75 g L^-1. The enhanced activity is attributed to increase the active surface sites, facilitated charge separation through intimate Bi₂O₃– biochar interfacial contact, and improved photon utilization. These findings demonstrate the considerable potential of Bi₂O₃–biochar composites as sustainable, high-performance photocatalysts for the removal of pharmaceutical micropollutants under energy-saving LED illumination.

本研究制备了Bi₂O₃-棕榈油厂废水污泥（POMES）衍生生物炭（BC）复合材料，用于光催化降解磺胺甲恶唑（SMX）。此外，高效节能的LED辐射被用作传统高能光源的可持续替代品。该复合材料以乙二醇为溶剂，以聚甲醛生物炭为多孔载体，采用溶剂热法合成。将不同浓度的Bi（NO₃）₃·5H₂O （5-20 mmol）前驱体与固定生物炭（0.1 g）负载相结合，以优化其光催化性能。结构和形态分析证实了Bi₂O₃纳米颗粒在生物炭基质上的成功整合。优化后的BCB-10复合材料具有均匀的Bi₂O₃分散性，增加了表面积，改善了织构性能。x射线衍射（XRD）、傅里叶变换红外光谱（FTIR）和紫外-可见漫反射光谱（UV-DRS）分析证实了晶体稳定性、官能团相互作用以及带隙减小、可见光吸收增强。光致发光（PL）结果表明，该材料的电荷复合减少，具有优异的光催化活性。在可见光LED照射下，bi₂O₃-生物炭（BCB- 10）在负载0.75 g L-1的催化剂下，在180 min内对10 mg L-1的SMX进行了64.04%的降解。活性增强的原因是增加了活性表面位点，通过Bi₂O₃-生物炭的亲密界面接触促进了电荷分离，提高了光子利用率。这些发现证明了Bi₂O₃-生物炭复合材料作为节能LED照明下去除制药微污染物的可持续、高性能光催化剂的巨大潜力。

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引用次数: 0

Magnetic adsorbent photocatalysts for xanthate remediation: Advances, mechanisms and future prospects 磁吸附光催化剂在黄药修复中的应用进展、机理及展望

IF 5.4 3区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Communications

Pub Date : 2026-02-02 DOI: 10.1016/j.inoche.2026.116292

Anjali Raj , A.R. Tembhurkar

Photocatalysis is the emerging technology for degradation of xanthate from mineral processing effluent. Photocatalyst plays a vital role in degradation. However, bare photocatalyst causes certain challenges like wider band gaps, agglomeration, and difficulty in separating from the effluent after the remediation that limit its performance. To overcome these limitations, researchers focus on developing Magnetic Adsorbent Photocatalyst (M-APh) for achieving enhanced performance through synergic action of adsorption and photocatalysis by integrating magnetic material into the nanophotocatalyst and immobilizing them over certain support carriers for preventing their agglomeration and facilitate easier separation under external magnetic field for recovery.Researchers also used semiconductor materials for preparation of photocatalyst for obtaining enhanced performance of xanthate degradation even in the visible light spectrum. Although, application of M-APh for the degradation of xanthate promises excellent performance with better reusability, the literature available is limited and diverse. As such the present review critically examines the advancement of the application of M-APh for degradation of xanthate along with its basic mechanism, synthesization, recovery and reusability with possible way forward to meet the challenges and provide the future perspectives of the research in this field.

光催化是一种新兴的降解矿物加工废水中黄原药的技术。光催化剂在降解中起着至关重要的作用。然而，裸光催化剂会带来一些挑战，如更宽的带隙、团聚以及修复后难以从流出物中分离，从而限制了其性能。为了克服这些限制，研究人员致力于开发磁性吸附光催化剂（M-APh），通过将磁性材料整合到纳米光催化剂中，并将其固定在一定的载体上，以防止其团聚，并使其在外部磁场下更容易分离，从而实现吸附和光催化的协同作用。研究人员还利用半导体材料制备光催化剂，使黄药在可见光光谱下的降解性能得到增强。虽然应用M-APh降解黄原药具有优异的性能和更好的可重用性，但现有的文献有限且多样。本文从M-APh降解黄原药的基本机理、合成、回收和再利用等方面综述了M-APh降解黄原药的研究进展，并对今后的研究方向进行了展望。

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引用次数: 0

Sorption of some rare earth elements from aqueous solutions by Chitosan/β-Cyclodextrin /CuO nanocomposite: equilibrium, kinetic and thermodynamic study 壳聚糖/β-环糊精/CuO纳米复合材料吸附水溶液中稀土元素的平衡、动力学和热力学研究

IF 5.4 3区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Communications

Pub Date : 2026-01-31 DOI: 10.1016/j.inoche.2026.116205

Moubarak A. Sayed , Hisham F. Aly , Lee D. Wilson

In this study, a novel nanocomposite called chitosan/β-cyclodextrin/CuO (CS-βCD-CuO) nanocomposite was synthesized for use as an efficient sorbent for Eu³⁺, Sm³⁺ and Nd³⁺ from aqueous media. The characterization of the CS-βCD-CuO nanocomposite was achieved by spectroscopy (FT-IR, ¹³C solid-state NMR, EDX, XPS and XRD), microscopy (SEM), and thermogravimetry (TGA-DTA). The effects of several factors that influence the sorption process, including temperature, adsorbent dosage, contact time, initial metal ion concentration, and initial solution pH were conducted. The investigated parameters were optimized as follows: pH 4.0; mass sorbent 0.05 g; aqueous phase volume, 10.0 mL, sorption time, 240 min; desorption time, 240 min; and initial metal-ion concentration (Nd³⁺, Sm³⁺ and Eu³⁺; 500 mg/L). According to the experimental findings, the Langmuir isotherm model adequately represented the adsorption isotherms of Eu³⁺, Sm³⁺ and Nd³⁺ on the CS-βCD-CuO nanocomposite. The maximum monolayer adsorption capacities (q_m), were detected as follows: Nd³⁺, 59.00; Sm³⁺, 36.61 and Eu³⁺, 65.45 mg/g. The experimental kinetic profiles are well described by the pseudo-second order kinetic model. The sorption process is exothermic and nonspontaneous, according to the determined thermodynamic parameters. Furthermore, at a fixed weight of CS-βCD-CuO nanocomposite, 10.0 mL of HCl (1.0 M) was shown to be the most effective eluent of Eu³⁺, Sm³⁺ and Nd³⁺.

本研究合成了一种新型壳聚糖/β-环糊精/CuO （CS-βCD-CuO）纳米复合材料，用于吸附水中介质中的Eu3+、Sm3+和Nd3+。通过FT-IR、13C固体核磁共振、EDX、XPS和XRD等光谱分析、SEM和热重分析等手段对CS-βCD-CuO纳米复合材料进行了表征。考察了温度、吸附剂用量、接触时间、初始金属离子浓度、初始溶液pH等因素对吸附过程的影响。优化后的工艺参数为：pH 4.0；质量吸附剂0.05 g；水相体积10.0 mL，吸附时间240 min；解吸时间，240 min；初始金属离子浓度（Nd3+、Sm3+和Eu3+； 500 mg/L）。实验结果表明，Langmuir等温线模型能较好地表征CS-βCD-CuO纳米复合材料对Eu3+、Sm3+和Nd3+的吸附等温线。最大单层吸附量（qm）为：Nd3+， 59.00；Sm3+为36.61，Eu3+为65.45 mg/g。拟二级动力学模型很好地描述了实验动力学曲线。根据确定的热力学参数，吸附过程是放热的、非自发的。此外，在CS-βCD-CuO纳米复合材料的固定重量下，10.0 mL的HCl （1.0 M）是Eu3+、Sm3+和Nd3+最有效的洗脱剂。

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引用次数: 0

Mechanistic insights into CO₂ capture in metal–organic frameworks: from framework dynamics to molecular interactions 金属-有机框架中CO₂捕获的机理：从框架动力学到分子相互作用

IF 5.4 3区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Communications

Pub Date : 2026-01-31 DOI: 10.1016/j.inoche.2026.116271

Richa Vinayak , Garima Sharma

The urgent need to mitigate atmospheric CO₂ has driven the exploration of advanced materials for carbon capture, with metal-organic frameworks (MOFs) emerging as frontrunners due to their structural versatility, high surface areas, and tunable functionalities. This review presents a comprehensive mechanistic perspective on CO₂ adsorption in MOFs, linking molecular-level interactions such as metal CO₂ binding, hydrogen bonding, and electrostatics with macroscopic structural responses including gate-opening, breathing, and negative gas adsorption (NGA). This review presents a systematic, application-oriented mechanistic framework for CO₂ adsorption in MOFs, categorizing adsorption behavior into framework-responsive, site-specific, and guest-induced cooperative mechanisms, and linking these mechanisms to practical capture scenarios. Framework-responsive mechanisms highlight the dynamic adaptability of MOFs, while site-specific mechanisms leverage open metal sites, functional groups, and engineered defects to create high-affinity adsorption centers. Guest-induced cooperative mechanisms enhance uptake via synergistic host–guest interactions, and rotational dynamics are shown to influence diffusion and selectivity. By integrating synthetic design principles, structural flexibility, and mechanistic insight, this review bridges chemistry, physics, and materials design, offering tutorial value for early-career researchers and forward-looking strategies for next-generation sorbents tailored to post-combustion, pre-combustion, and direct air CO₂ capture.

减少大气CO₂的迫切需求推动了对先进碳捕获材料的探索，金属有机框架（mof）因其结构多功能性、高表面积和可调功能而成为领跑者。本文综述了mof中CO 2吸附的综合机理，将分子水平的相互作用（如金属CO 2结合，氢键和静电）与宏观结构反应（包括门打开，呼吸和负气体吸附（NGA））联系起来。本文综述了mof中CO₂吸附的系统、面向应用的机制框架，将吸附行为分为框架响应机制、位点特异性机制和客体诱导的合作机制，并将这些机制与实际捕获场景联系起来。框架响应机制突出了mof的动态适应性，而位点特异性机制利用开放的金属位点、官能团和工程缺陷来创建高亲和力的吸附中心。客人诱导的合作机制通过协同宿主-客人相互作用增强摄取，旋转动力学显示影响扩散和选择性。通过整合合成设计原则、结构灵活性和机械洞察力，本综述将化学、物理和材料设计联系起来，为早期职业研究人员提供指导价值，并为针对燃烧后、燃烧前和直接空气CO₂捕获的下一代吸附剂提供前瞻性策略。

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引用次数: 0

Novel plastic waste–derived carbon nanodarts and nanoblades decorated with cobalt–molybdenum carbides as outstanding antibacterial active agents 新型塑料垃圾来源的碳纳米镖和纳米片装饰钴钼碳化作为杰出的抗菌活性剂

IF 5.4 3区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Communications

Pub Date : 2026-01-31 DOI: 10.1016/j.inoche.2026.116275

Ahmed M. Haggar , Ahmed M. Azzam , Mohamed S. Selim , Bayaumy B. Mostafa , Huichao Jin , Ahmed E. Awadallah , Ateyya A. Aboul-Enein , Essam Sh. Mohamed

In the current work, we reported comparable antimicrobial synergistic effects between two distinct carbonaceous nanomaterials for enhanced antibacterial activity. The developed nanomaterials were tubular carbon nanotubes (T-CNTs) and platelet carbon nanofibers (P-CNFs). The size, morphology, and elemental composition of the produced nanomaterials were confirmed using various analytical techniques. Variation in their controlled diameters and morphologies would affect their nanocomposites' surface and biological activity properties. The antibacterial properties of the two carbonaceous nanomaterials were tested against gram-positive (Bacillus subtilis and Staphylococcus aureus) and gram-negative (Escherichia coli and Pseudomonas aeruginosa) bacteria. The generated nanostructured materials' antibacterial efficacy was assessed using scanning electron microscopy, cell viability percentages, and minimal degradation. The carbonaceous materials' microbial resistance was discovered by optical microscopy and SEM analysis, which revealed that they wrapped the bacterial cells completely and disrupted their form morphology via microbial cell membrane degradation. Because of the gram-negative bacterial outer membrane proteins and exterior cellular wall structure, the developed materials demonstrated higher antimicrobial activity toward gram-positive bacteria than gram-negative strains. P-CNF nanoblades exhibited higher antibacterial activity than T-CNTs nanodarts. The highest antibacterial activity was recorded against bacterial species S. aureus and E. coli. The highest inhibition zones, 22 ± 2.0 mm and 19 ± 1.5 mm, were presented at a concentration of 10 mg/mL of P-CNFs, respectively. The high-surface-area P-CNF nanoblades could cause antibacterial activity, mechanical stress, oxidative stress, cellular lysis and destruction, and physical wrapping. Our research sheds light on the development of two novel and potent carbonaceous antibacterial agents for biological and environmental applications.

在目前的工作中，我们报道了两种不同的碳质纳米材料之间的抗菌协同效应，以增强抗菌活性。开发的纳米材料有管状碳纳米管（T-CNTs）和片状碳纳米纤维（P-CNFs）。利用各种分析技术确定了所制备纳米材料的尺寸、形态和元素组成。其控制直径和形态的变化将影响其纳米复合材料的表面和生物活性特性。测试了两种碳质纳米材料对革兰氏阳性菌（枯草芽孢杆菌和金黄色葡萄球菌）和革兰氏阴性菌（大肠杆菌和铜绿假单胞菌）的抗菌性能。通过扫描电子显微镜、细胞活力百分比和最小降解来评估生成的纳米结构材料的抗菌效果。通过光学显微镜和扫描电镜分析发现，碳质材料通过微生物细胞膜降解，将细菌细胞完全包裹，破坏了细菌的形态形态。由于革兰氏阴性菌的外膜蛋白和外细胞壁结构，所制备的材料对革兰氏阳性菌的抑菌活性高于革兰氏阴性菌。P-CNF纳米叶片比t - cnf纳米叶片具有更高的抗菌活性。对金黄色葡萄球菌和大肠杆菌抑菌活性最高。当P-CNFs浓度为10 mg/mL时，抑制区最大，分别为22±2.0 mm和19±1.5 mm。高表面积的P-CNF纳米叶片可以引起抗菌活性、机械应力、氧化应激、细胞裂解和破坏以及物理包裹。我们的研究揭示了两种新型和有效的碳质抗菌剂的生物和环境应用的发展。

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引用次数: 0

Fabrication of Nd-doped SnO₂ modified screen-printed electrode for sensitive detection of sulfamethoxazole in food and biological samples 用于食品和生物样品中磺胺甲恶唑灵敏检测的nd掺杂SnO 2修饰丝网印刷电极的制备

IF 5.4 3区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Communications

Pub Date : 2026-01-31 DOI: 10.1016/j.inoche.2026.116276

E. Jegalakshmi , M. Rameshbabu , A. Manikandan , M. Razia , P. Sagayaraj , Mani Govindasamy , S. Muthupandi , K. Prabha , A. Dinesh , D. Shanmugapriya

This study presents an innovative electrochemical sensing platform incorporating neodymium-enhanced tin oxide (Nd-doped SnO₂) nanomaterials on screen-printed carbon electrodes for quantitative sulfamethoxazole (SMX) analysis. The integration of neodymium dopants significantly enhanced the morphological, electronic, and surface properties of the tin oxide matrix, as confirmed through comprehensive analytical characterization. Structural analysis via Powder X-ray diffraction revealed a tetragonal rutile crystal structure with nanoscale crystallite dimensions spanning 8–17 nm. Optical characterization through UV–Vis spectroscopy demonstrated reduced bandgap energy, indicating improved electron transport capabilities. FTIR confirmed metal–oxygen coordination and hydroxyl surface functionalities, while electron microscopy (SEM/TEM) revealed well-distributed nanoarchitectures exhibiting enhanced surface-to-volume ratios and porosity. Compositional validation through energy-dispersive X-ray analysis and surface chemistry assessment via XPS verified successful dopant incorporation and surface modification. Electroanalytical performance evaluation using cyclic and differential pulse voltammetric techniques revealed distinct oxidation responses for SMX detection. Quantitative analysis demonstrated dual calibration ranges (0.1–15 μM and 15–67.3 μM) with detection thresholds of 0.46 μM and 5.00 μM, respectively. The sensing platform exhibited superior reproducibility, extended operational stability, and high analytical recovery in complex matrices including pharmaceutical formulations (Sumetrolim tablets), biological samples (chicken tissue extracts), and clinical specimens (human serum). The distinctive electrochemical response profile and minimal matrix interference demonstrate the sensor's reliability for practical applications in pharmaceutical quality control, bioanalytical monitoring, and food safety assessment. This investigation highlights how rare earth doping combined with nanostructural optimization enables the development of cost-effective, high-performance electroanalytical devices.

本研究提出了一种创新的电化学传感平台，将钕增强氧化锡（nd掺杂SnO₂）纳米材料应用于丝网印刷碳电极上，用于磺胺甲恶唑（SMX）的定量分析。通过综合分析表征证实，钕掺杂剂的集成显著增强了氧化锡基体的形态、电子和表面性能。粉末x射线衍射分析显示其为四边形金红石晶体结构，晶粒尺寸为8 ~ 17 nm。通过紫外可见光谱的光学表征表明，带隙能量降低，表明电子传输能力提高。FTIR证实了金属-氧配位和羟基表面功能，而电子显微镜（SEM/TEM）显示了均匀分布的纳米结构，表现出增强的表面体积比和孔隙率。通过能量色散x射线分析和XPS表面化学评估验证了成功的掺杂和表面改性。使用循环和差分脉冲伏安技术的电分析性能评估揭示了SMX检测的不同氧化反应。定量分析显示双校准范围（0.1 ~ 15 μM和15 ~ 67.3 μM），检测阈值分别为0.46 μM和5.00 μM。该传感平台在包括药物制剂（Sumetrolim片剂）、生物样品（鸡组织提取物）和临床样品（人血清）在内的复杂基质中具有优异的重现性、扩展的操作稳定性和高的分析回收率。独特的电化学响应谱和最小的基质干扰证明了该传感器在药品质量控制、生物分析监测和食品安全评估等实际应用中的可靠性。这项研究强调了稀土掺杂与纳米结构优化的结合如何使经济高效的电分析设备的发展成为可能。

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引用次数: 0