Inorganic Chemistry Communications最新文献_第2页

Ionic liquid-functionalized and manganese nanoparticle impregnated by sustainable activated carbon prepared from Banana Peel for tetracycline wastewater treatment 香蕉皮可持续活性炭浸渍离子液体功能化锰纳米颗粒处理四环素废水

IF 5.4 3区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Communications

Pub Date : 2026-01-02 DOI: 10.1016/j.inoche.2026.116138

Mohammed Jaafar Ali Alatabe

This study presents the development of a novel and sustainable adsorbent-catalyst, ionic liquid (IL)-functionalized and manganese (Mn) nanoparticle-impregnated activated carbon (IL-Mn/AC), derived from banana peel biomass, for the efficient removal of tetracycline (TC) from wastewater via a persulfate-activated process. The work addresses the urgent need for cost-effective and environmentally friendly solutions for pharmaceutical contaminant degradation. Characterization by SEM confirmed the successful impregnation of uniformly dispersed Mn nanoparticles onto the highly porous activated carbon matrix, preventing agglomeration and enhancing active site accessibility. FTIR spectroscopy verified the covalent grafting of the ionic liquid, indicating the formation of new CN and CH bonds, which contribute to enhanced TC capture through synergistic hydrophobic and electrostatic interactions. XPS analysis further elucidated the co-existence of active Mn(II) and Mn(III) species, with a high proportion of Mn(III) identified as crucial for initiating persulfate (S₂ O₈⁻²) activation. While IL and Mn incorporation slightly reduced BET surface area, the engineered mesoporous structure facilitated optimal diffusion of TC and oxidant molecules, overcoming mass transfer limitations. Performance evaluation demonstrated maximum TC degradation efficiency in the near-neutral pH (7.0), balancing TC speciation for adsorption with efficient sulfate radical generation. Optimal catalyst (1.0 g/L) and persulfate dosage were established, highlighting the delicate balance between active site availability and radical self-quenching. Reaction kinetics revealed a rapid initial phase dominated by adsorption and activation, followed by a slower steady-state limited by mass transfer and Mn regeneration. This sustainable IL-Mn/AC nanocomposite offers a promising, high-performance solution for advanced oxidation processes, contributing significantly to wastewater treatment and environmental remediation efforts.

本研究提出了一种新型的可持续吸附-催化剂，离子液体（IL）功能化和锰（Mn）纳米颗粒浸渍活性炭（IL-Mn/AC），来源于香蕉皮生物质，用于通过过硫酸盐活化工艺高效去除废水中的四环素（TC）。这项工作解决了对具有成本效益和环境友好的药物污染物降解解决方案的迫切需要。SEM表征证实了均匀分散的Mn纳米颗粒成功浸渍在高孔活性炭基体上，防止了团聚，提高了活性位点的可及性。FTIR光谱验证了离子液体的共价接枝，表明形成了新的CN和CH键，这有助于通过协同疏水和静电相互作用增强TC捕获。XPS分析进一步阐明了活性Mn（II）和Mn（III）物种共存，高比例的Mn（III）被确定为引发过硫酸盐（S2 O8−2）活化的关键。虽然IL和Mn的掺入略微降低了BET的表面积，但工程介孔结构促进了TC和氧化剂分子的最佳扩散，克服了传质限制。性能评估表明，在接近中性的pH值（7.0）下，TC的降解效率最高，平衡了TC的形态以吸附有效的硫酸盐自由基生成。最佳催化剂（1.0 g/L）和过硫酸盐用量的确定，突出了活性位点可用性和自由基自淬之间的微妙平衡。反应动力学揭示了一个以吸附和活化为主的快速初始阶段，随后是一个缓慢的稳态，受传质和Mn再生的限制。这种可持续的IL-Mn/AC纳米复合材料为高级氧化工艺提供了一种有前途的高性能解决方案，为废水处理和环境修复工作做出了重大贡献。

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引用次数: 0

Green engineered TiO₂-chitosan nanoparticles using Salvia coccinea leaf extract: In-vitro antioxidant and anti-inflammatory potential for wound healing properties 使用鼠尾草叶提取物的绿色工程TiO 2 -壳聚糖纳米颗粒：体外抗氧化和抗炎潜力的伤口愈合特性

IF 5.4 3区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Communications

Pub Date : 2026-01-02 DOI: 10.1016/j.inoche.2025.116132

J.L. Mercy , Fahd A. Nasr , Mohammed Al-zharani , Manickam Rajkumar , Manivannan Govindasamy , Pachaiyappan Murugan , Dharmalingam Kirubakaran

Salvia coccinea, a traditionally valued medicinal plant, is recognized for its rich phytochemical profile and therapeutic potential. In this study, TiO₂-coated chitosan nanoparticles (TiO₂-CS NPs) were synthesized through a green, eco-friendly approach using S. coccinea leaf extract as a reducing and stabilizing agent. The nanoparticles were characterized by UV–Vis spectroscopy, FTIR, XRD, FE-SEM and EDAX analyses. UV–Vis spectra exhibited a distinct absorption peak at 285 nm, confirming nanoparticle formation. FTIR results indicated the presence of functional groups such as alkenes and carboxylic acids, suggesting their role in nanoparticle stabilization. XRD patterns confirmed the crystalline nature of TiO₂-CS NPs, while FE-SEM images revealed predominantly spherical structures. EDAX analysis verified the elemental composition of titanium, oxygen, and carbon. The particle size measurements ranged between 14.8 nm and 48.8 nm, confirming their nanoscale dimension. Biological evaluation demonstrated that TiO₂-CS NPs possess potent antioxidant activity, achieving 85.26 % DPPH radical scavenging. Anti-inflammatory assays, including protein denaturation inhibition (77.17 %) and HRBC membrane stabilization (72.66 %), revealed significant protective effects. Moreover, the nanoparticles enhanced wound healing, particularly at higher concentrations (23.88 μg/mL), as evidenced by accelerated cell migration and tissue repair. Overall, the green-synthesized TiO₂-CS NPs derived from S. coccinea exhibit multifunctional bioactivities, highlighting their potential as promising agents for biomedical applications.

鼠尾草（Salvia coccinea）是一种传统的药用植物，因其丰富的植物化学成分和治疗潜力而被公认。本研究以葡萄球菌叶提取物为还原剂和稳定剂，采用绿色环保的方法合成了TiO₂包被壳聚糖纳米颗粒（TiO₂-CS NPs）。采用紫外可见光谱、FTIR、XRD、FE-SEM和EDAX对纳米颗粒进行了表征。紫外可见光谱在285 nm处显示出明显的吸收峰，证实了纳米颗粒的形成。FTIR结果表明，在纳米颗粒中存在烯烃和羧酸等官能团，表明它们在纳米颗粒稳定中的作用。XRD图证实了tio2 -CS NPs的结晶性质，而FE-SEM图则显示了主要的球形结构。EDAX分析证实了钛、氧和碳的元素组成。颗粒尺寸测量范围在14.8 nm到48.8 nm之间，证实了它们的纳米尺寸。生物学评价表明，TiO₂-CS NPs具有强大的抗氧化活性，达到85.26%的DPPH自由基清除率。抗炎试验，包括蛋白变性抑制（77.17%）和HRBC膜稳定（72.66%），显示出显著的保护作用。此外，纳米颗粒促进伤口愈合，特别是在较高浓度（23.88 μg/mL）时，加速细胞迁移和组织修复。总体而言，绿色合成的来自球菌的TiO₂-CS NPs表现出多功能生物活性，突出了它们作为生物医学应用的潜力。

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引用次数: 0

Pressure-induced bandgap tuning and optical enhancement in A2YAgZ6 (a = Cs, Rb; Z = I, Br) double perovskites A2YAgZ6 （a = Cs, Rb; Z = I, Br）双钙钛矿的压力诱导带隙调谐和光学增强

IF 5.4 3区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Communications

Pub Date : 2026-01-02 DOI: 10.1016/j.inoche.2025.116134

Mohamed Hassoun , Kamal Assiouan , Abdelwafi Degdagui , Hatim Baida , Mustapha El Hadri , Abderrahman El Kharrim , Adil Marjaoui , Mohamed Zanouni

Lead-free halide double perovskites represent a promising class of sustainable materials for next-generation optoelectronic and photocatalytic applications, offering an optimal balance between chemical stability and environmental safety. In this work, first-principles density functional theory (DFT) is employed to systematically explore the pressure-dependent evolution (0–50 GPa) of the structural, electronic, elastic, and optical properties of A₂YAgZ₆ (A = Cs, Rb; Z = I, Br). Structural optimization confirms retention of the cubic

F \bar{m} 3 m

symmetry under hydrostatic compression, accompanied by significant lattice contraction and a moderate decrease in thermodynamic stability. All compositions remain stable across the pressure range, with Br-based variants exhibiting greater robustness. The computed elastic constants reveal substantial enhancements in mechanical strength and ductility with increasing pressure. Electronic structure analysis shows progressive bandgap narrowing for example, from 2.44 eV to 1.56 eV in Cs₂YAgI₆ alongside asymmetric changes in carrier effective masses, suggesting improved hole mobility but reduced electron mobility. Optical properties are markedly enhanced under pressure, with increased absorption coefficients, dielectric constants, and refractive indices, particularly in bromide systems. These results establish A₂YAgZ₆ as pressure tunable, lead free semiconductors with strong potential for next generation optoelectronic and photocatalytic technologies.

无铅卤化物双钙钛矿代表了下一代光电和光催化应用的一种有前途的可持续材料，在化学稳定性和环境安全性之间提供了最佳平衡。本文采用第一性原理密度泛函理论（DFT）系统地探讨了A2YAgZ6 （A = Cs, Rb; Z = I, Br）的结构、电子、弹性和光学性质的压力依赖演化（0-50 GPa）。结构优化证实了在流体静力压缩下立方Fm¯3m对称性的保留，伴随着显著的晶格收缩和热力学稳定性的适度下降。所有成分在整个压力范围内保持稳定，br基变体表现出更强的稳健性。计算得到的弹性常数表明，随着压力的增加，材料的机械强度和延性显著增强。电子结构分析显示，Cs₂yag6的带隙逐渐缩小，从2.44 eV缩小到1.56 eV，载流子有效质量也发生了不对称变化，这表明空穴迁移率提高了，但电子迁移率降低了。光学性质在压力下显著增强，吸收系数、介电常数和折射率增加，特别是在溴化物体系中。这些结果表明，A₂YAgZ6是一种压力可调的无铅半导体，在下一代光电和光催化技术中具有强大的潜力。

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引用次数: 0

Hydrothermal synthesis of activated carbon from pistachio shells for supercapacitor applications: Influence of residence time and surface chemistry 超级电容器用开心果壳水热合成活性炭：停留时间和表面化学的影响

IF 5.4 3区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Communications

Pub Date : 2026-01-02 DOI: 10.1016/j.inoche.2025.116099

Elyes Bel Hadj Jrad , Abdelhakim Elmouwahidi , Esther Bailón García , Francisco Carrasco Marín , Chérif Dridi

In this study, pistachio shell wastes are hydrothermally converted into hydrochars and highly porous activated carbons. Samples are prepared at different residence times (6 h, 12 h, and 24 h) to assess the impact of processing duration. The physico-chemical characterization demonstrates that the sample treated for 12 h has the best performance, with a well-balanced micro- and mesoporous structure, a high BET surface area of 813 m²/g, and a rich presence of oxygen- and phosphorus-containing functional groups, highlighting its strong potential for supercapacitor applications. We employed a two-electrode cell configuration in 1 M H₂SO₄ with flexible graphite paper substrates for electrochemical evaluation. The supercapacitor using treated sample at residence time of 12 h exhibits a maximum specific capacitance of 215.14 F/g, along with energy and power densities of 7.47 Wh/kg and 0.09 KW/kg, respectively, at a current density of 0.1 A/g. These results are primarily attributed to the high BET surface area and the formation of microspherical carbon structures, which promote efficient adsorption/desorption processes. Furthermore, the assembled device demonstrates excellent cycling stability, retaining over 93 % of its capacitance after 3000 cycles, indicating strong potential for sustainable micro-energy systems and environmentally friendly energy storage technologies.

本研究利用水热法将开心果壳废弃物转化为水炭和高孔活性炭。样品在不同的停留时间（6小时，12小时和24小时）制备，以评估处理时间的影响。物理化学表征表明，经过12 h处理的样品性能最佳，微孔和介孔结构平衡良好，BET表面积高达813 m2/g，含有丰富的含氧和含磷官能团，具有很强的超级电容器应用潜力。我们采用双电极电池配置在1 M H₂SO₄和柔性石墨纸衬底进行电化学评价。当电流密度为0.1 a /g时，经处理的样品在停留时间为12 h时的最大比电容为215.14 F/g，能量和功率密度分别为7.47 Wh/kg和0.09 KW/kg。这些结果主要归因于BET的高表面积和微球形碳结构的形成，这促进了高效的吸附/解吸过程。此外，组装后的装置表现出出色的循环稳定性，在3000次循环后保持93%以上的电容，表明可持续微能源系统和环保储能技术的强大潜力。

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引用次数: 0

Dual-functional WO3·2H2O/Ti3C2Tx composite film for electrochromic and infrared stealth applications 用于电致变色和红外隐身的双功能WO3·2H2O/Ti3C2Tx复合薄膜

IF 5.4 3区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Communications

Pub Date : 2026-01-02 DOI: 10.1016/j.inoche.2026.116135

Dong Li , Pu Chen , Hanyang Zhang , Dongsheng Tang , Jiawen Hu

WO₃ films are widely used in electrochromic devices owing to their high optical modulation and environmental stability. However, their practical application is hindered by sluggish redox kinetics and the ion trapping effect, leading to slow switching speeds and reduced cycling stability. To address these issues, we incorporated two-dimensional layered Ti₃C₂T_x (T = –O, F, and –OH), known for its high conductivity, and WO₃·2H₂O nanosheets to form a composite film with dual functionalities of electrochromism and infrared stealth. The optimized WO₃·2H₂O/Ti₃C₂T_x composite film exhibits a significantly improved optical modulation of 58.0 % at 700 nm), rapid switching speeds (colored/bleached times, 9.2 s/1.6 s), and enhanced cycling stability (decay of 30.1/18.2 % in insertion/extraction charge density after 3000 s of cycling). These improvements originate from the synergistic effect of Ti₃C₂T_x and the crystalline water within the WO₃·2H₂O nanosheets. Together, they promote Li⁺ ion participation in redox reactions, accelerate the reaction kinetics, and reduce the ion trap effect in WO₃ through reduced charge transfer resistance. Additionally, the incorporation of low-infrared-emissivity Ti₃C₂T_x provide a measurable 3.4 °C temperature shielding effect in colored state, further enhancing the composite film's infrared stealth performance. Owing to these advantages, the WO₃·2H₂O/Ti₃C₂T_x composite film shows great promise for applications in smart windows and thermal camouflage.

WO3薄膜由于具有较高的光调制性和环境稳定性，被广泛应用于电致变色器件中。然而，它们的实际应用受到缓慢的氧化还原动力学和离子捕获效应的阻碍，导致切换速度缓慢和循环稳定性降低。为了解决这些问题，我们将具有高导电性的二维层状Ti3C2Tx （T = -O， F和-OH）与WO3·2H2O纳米片结合，形成具有电致变色和红外隐身双重功能的复合薄膜。优化后的WO3·2H2O/Ti3C2Tx复合薄膜在700 nm处的光调制率显著提高58.0%，切换速度快（着色/漂白时间为9.2 s/1.6 s），循环稳定性增强（循环3000 s后插入/提取电荷密度衰减30.1/ 18.2%）。这些改进源于Ti3C2Tx和WO3·2H2O纳米片内结晶水的协同作用。它们共同促进了Li+离子参与氧化还原反应，加速了反应动力学，并通过降低电荷转移阻力降低了WO3中的离子阱效应。此外，低红外发射率Ti3C2Tx的加入在有色状态下提供了可测量的3.4°C温度屏蔽效果，进一步增强了复合膜的红外隐身性能。由于这些优点，WO3·2H2O/Ti3C2Tx复合薄膜在智能窗户和热伪装方面具有很大的应用前景。

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引用次数: 0

A sustainable Mn(III)-complex anchored on multi-walled carbon nanotube for selective oxidation of HMF to FDCA in aqueous solution 锚定在多壁碳纳米管上的可持续Mn（III）配合物在水溶液中选择性氧化HMF为FDCA

IF 5.4 3区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Communications

Pub Date : 2026-01-02 DOI: 10.1016/j.inoche.2026.116137

Rima Heider Al Omari , G. PadmaPriya , Baraa Mohammed Yaseen , Subhashree Ray , Y. Sasikumar , Renu Sharma , Abhayveer Singh , Rasul Usmanov

A novel manganese-based heterogeneous catalyst was developed via stepwise modification of multi-walled carbon nanotubes (MWCNTs) for the direct oxidation of 5-hydroxymethylfurfural (HMF) to 2,5-furandicarboxylic acid (FDCA). Pristine MWCNTs were first purified and functionalized with 3-aminopropyltriethoxysilane, followed by covalent grafting of 2-hydroxybenzophenone through Schiff base linkage, providing effective chelating sites for manganese ions. Subsequent complexation with manganese(II) chloride yielded the final catalyst. Comprehensive characterization using FT-IR, EDX, XPS, XRD, TEM, TGA, BET, and ICP confirmed successful functionalization, metal incorporation, structural integrity, and thermal stability of the catalyst. Reaction parameters were systematically optimized to maximize FDCA yield and selectivity. The catalyst revealed excellent activity under mild and environmentally friendly aqueous conditions, attaining a maximum FDCA yield of 93 % at 100 °C after 6 h. Furthermore, the turnover number (TON) was calculated to be 18.7, demonstrating the efficiency of our developed catalytic system. Recyclability tests indicated that the catalyst retained high catalytic performance over multiple reaction cycles with minimal metal leaching. This approach offers a sustainable and scalable route to FDCA, a key bio-based platform chemical with significant industrial relevance in the synthesis of renewable polymers.

通过对多壁碳纳米管（MWCNTs）的逐步改性，制备了一种新型锰基非均相催化剂，用于将5-羟甲基糠醛（HMF）直接氧化为2,5-呋喃二羧酸（FDCA）。首先用3-氨基丙基三乙氧基硅烷对原始MWCNTs进行纯化和功能化，然后通过希夫碱键对2-羟基二苯甲酮进行共价接枝，为锰离子提供有效的螯合位点。随后与氯化锰络合得到最终催化剂。通过FT-IR、EDX、XPS、XRD、TEM、TGA、BET和ICP等综合表征，证实了催化剂的成功功能化、金属掺入、结构完整性和热稳定性。系统优化反应参数，使FDCA产率和选择性最大化。该催化剂在温和和环保的水环境下表现出优异的活性，在100°C条件下反应6 h， FDCA收率最高可达93%。此外，计算出的周转率（TON）为18.7，证明了我们开发的催化体系的效率。可回收性试验表明，该催化剂在多次反应循环中仍保持较高的催化性能，且金属浸出量最小。这种方法为FDCA提供了可持续和可扩展的途径，FDCA是一种关键的生物基平台化学品，在可再生聚合物的合成中具有重要的工业意义。

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引用次数: 0

Effect of Cd–Ag Co-doping on the photocatalytic activity, electrical and magnetic properties of NiO NPs Cd-Ag共掺杂对NiO NPs光催化活性及电、磁性能的影响

IF 5.4 3区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Communications

Pub Date : 2026-01-02 DOI: 10.1016/j.inoche.2025.116120

Asmaa E.A.Morsy , E.M.M. Ibrahim , H.A.A. Saadallah , Abdel-Hamid Abu-Sehly , Essam F. Abo Zeid

Nickel oxide nanoparticles (NiO NPs) and their Cd–Ag co-doped counterparts were successfully synthesized via a chemical precipitation method and comprehensively characterized to investigate their structural, morphological, optical, dielectric, magnetic, and photocatalytic properties. X-ray diffraction analysis confirmed the cubic crystalline structure with high crystallinity and minor variations in crystallite size upon doping. XPS study shows the presence of Ni³⁺ and Ni²⁺ mixed valence states both in the doped sample. Microscopic investigations revealed nearly spherical nanoparticles with noticeable agglomeration, which was reduced by Cd and Ag incorporation. Fourier transform infrared spectra confirmed the presence of metal–oxygen bonds, while photoluminescence measurements demonstrated that co-doping effectively suppressed electron–hole recombination. Magnetic studies showed weak ferromagnetic behavior arising from uncompensated surface spins and defect states, with coercivity and magnetization influenced by Cd–Ag doping levels. Dielectric measurements indicated strong frequency dependence dominated by space charge polarization, with doped samples showing enhanced permittivity and dielectric loss due to increased charge carrier concentration. Electrical conductivity analysis revealed a conduction mechanism consistent with correlated barrier hopping model. Photocatalytic experiments, using diazonium blue dye as a model pollutant under UV irradiation, demonstrated significantly enhanced degradation efficiency for Cd–Ag co-doped NiO NPs compared to pure NiO, with Cd_0.1Ag_0.1Ni_0.8O achieving the highest efficiency of ∼91%. These findings highlight that Cd–Ag co-doping is an effective strategy for tailoring the multifunctional properties of NiO NPs, making them promising candidates for environmental remediation, optoelectronic, and magnetic applications.

采用化学沉淀法成功合成了氧化镍纳米粒子（NiO NPs）及其Cd-Ag共掺杂对偶物，并对其结构、形态、光学、介电、磁和光催化性能进行了全面表征。x射线衍射分析证实了掺杂后的立方晶体结构具有较高的结晶度，晶粒尺寸变化较小。XPS研究表明，掺杂样品中存在Ni3+和Ni2+混合价态。微观研究表明，纳米颗粒接近球形，并有明显的团聚，这是由于镉和银的掺入而减少的。傅里叶变换红外光谱证实了金属-氧键的存在，而光致发光测量表明共掺杂有效地抑制了电子-空穴复合。磁学研究表明，由于Cd-Ag掺杂水平的影响，表面自旋和缺陷态产生了弱铁磁行为，矫顽力和磁化强度受到影响。介电测量表明，空间电荷极化对频率有很强的依赖性，掺杂样品的介电常数和介电损耗由于载流子浓度的增加而增强。电导率分析揭示了与相关势垒跳变模型一致的传导机制。以重氮蓝染料为模型污染物，在紫外照射下进行光催化实验，结果表明，与纯NiO相比，Cd-Ag共掺杂NiO NPs的降解效率显著提高，Cd0.1Ag0.1Ni0.8O的最高效率为~ 91%。这些发现强调了Cd-Ag共掺杂是一种有效的策略，可以定制NiO NPs的多功能特性，使其成为环境修复，光电和磁性应用的有希望的候选人。

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引用次数: 0

Mesoporous ZnMn2O4 nanostructures synthesized via co-precipitation for efficient hydrogen sensing 共沉淀法合成具有高效氢传感功能的介孔ZnMn2O4纳米结构

IF 5.4 3区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Communications

Pub Date : 2026-01-01 DOI: 10.1016/j.inoche.2025.116102

M. Mojiri , P. Kameli , A. Irajizad , B. Aslibeiki

ZnMn₂O₄ (ZMO) is a promising yet underexplored hydrogen-sensing material owing to its unique spinel structure, multiple oxidation states, and tunable physicochemical properties. In this study, ZMO nanostructures were synthesized via a co-precipitation method and subsequently calcined at 500 °C (ZMO1) and 800 °C (ZMO2) to evaluate the impact of thermal treatment on their gas-sensing performance. Comprehensive analyses using X-ray diffraction (XRD), Raman spectroscopy, field-emission scanning electron microscopy (FESEM), high resolution transmition electron microscopy (HRTEM), Brunauer-Emmett-Teller (BET) surface area analysis and X-ray photoelectron spectroscopy (XPS) confirmed the successful formation of ZMO with temperature-dependent crystallinity and surface characteristics. The ZMO1 sample exhibited a mesoporous structure with a significantly higher specific surface area (306 m² g⁻¹), an increased Mn³⁺ concentration, and a greater abundance of surface oxygen species, leading to superior hydrogen-sensing behavior. At 300 °C, ZMO1 showed higher sensitivity, faster recovery (1.5 s), and a lower limit of detection (0.049 %) compared with ZMO2. These results highlight ZnMn₂O₄ as an efficient hydrogen-sensing material whose performance is strongly governed by synthesis and calcination conditions.

ZnMn2O4 （ZMO）由于其独特的尖晶石结构、多种氧化态和可调的物理化学性质，是一种很有前途但尚未开发的氢传感材料。在本研究中，通过共沉淀法合成了ZMO纳米结构，随后在500°C （ZMO1）和800°C （ZMO2）下煅烧，以评估热处理对其气敏性能的影响。通过x射线衍射（XRD）、拉曼光谱（Raman spectroscopy）、场发射扫描电镜（FESEM）、高分辨率透射电镜（HRTEM）、布鲁诺尔-埃米特-泰勒（BET）表面积分析和x射线光电子能谱（XPS）的综合分析，证实了ZMO的成功形成，并具有温度相关的结晶度和表面特征。ZMO1样品具有更高的比表面积（306 m2 g−1）、更高的Mn3+浓度和更高的表面氧丰度的介孔结构，从而具有优越的氢传感行为。在300℃时，ZMO1比ZMO2具有更高的灵敏度、更快的回收率（1.5 s）和更低的检出限（0.049%）。这些结果表明ZnMn2O4是一种高效的氢传感材料，其性能与合成和煅烧条件密切相关。

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引用次数: 0

Preparation of Ce-MOFs based on dual-ligand strategy and its corrosion inhibition effect for carbon steel 基于双配体策略的ce - mof的制备及其对碳钢的缓蚀效果

IF 5.4 3区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Communications

Pub Date : 2025-12-31 DOI: 10.1016/j.inoche.2025.116118

Xia Liu, Li Guo, Yulu Zhang, Shihan Wu

Metal-organic framework (MOFs) structures possess a large specific surface area and numerous active sites, enabling them to readily adsorb onto metal surfaces and effectively resist the attack of corrosive media. To this end, in this study, based on a dual-ligand strategy, cerium-based metal-organic frameworks (Ce-MOFs) incorporating trimellitic acid (H₃BTC) and phenanthroline (phen) were synthesized via a hydrothermal method. It were characterized using Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), and scanning electron microscopy (SEM). The corrosion inhibition performance of Ce-MOFs on carbon steel in 1.0 M HCl solution at different temperatures was investigated through weight-loss, electrochemical, and surface analysis. The findings of the study indicate that: 1. Ce-MOFs exhibit markedly enhanced anti-corrosion performance compared to the individual ligands, and its corrosion inhibition efficiency exceeding 90 %. 2. Compared to the single- ligand systems, even under high-temperature conditions, Ce-MOFs still exhibited a corrosion inhibition efficiency of approximately 80 %. 3. The corrosion inhibition effect of Ce-MOFs is attributed to the combined action of multiple adsorption processes. 4. By employing the dual-ligand strategy and leveraging the metal-organic framework structure, Ce-MOFs significantly enhance the strength and stability of adsorption on the metal surface.

金属有机骨架（mof）结构具有较大的比表面积和众多的活性位点，使其能够很容易地吸附在金属表面，并有效地抵抗腐蚀性介质的侵蚀。为此，本研究基于双配体策略，通过水热法合成了含有三苯三酸（H₃BTC）和菲罗啉（phen）的铈基金属有机骨架（Ce-MOFs）。采用傅里叶变换红外光谱（FT-IR）、x射线衍射（XRD）和扫描电镜（SEM）对其进行了表征。通过失重、电化学和表面分析研究了Ce-MOFs在1.0 M HCl溶液中不同温度下对碳钢的缓蚀性能。研究结果表明：1。与单个配体相比，ce - mof具有明显增强的抗腐蚀性能，其缓蚀效率超过90%。2. 与单配体体系相比，即使在高温条件下，ce - mof的缓蚀效率仍保持在80%左右。3. Ce-MOFs的缓蚀作用是多种吸附过程共同作用的结果。4. 通过采用双配体策略和利用金属-有机骨架结构，Ce-MOFs显著提高了金属表面吸附的强度和稳定性。

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引用次数: 0

Eco-friendly synthesis of europium-doped ZnO/Ag nanocomposites for efficient dye degradation and antioxidant performance 环保合成具有高效染料降解和抗氧化性能的掺铕ZnO/Ag纳米复合材料

IF 5.4 3区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Communications

Pub Date : 2025-12-31 DOI: 10.1016/j.inoche.2025.116122

Niveda Leishangthem , Naorem Bela Devi , N. Mohondas Singh

Europium-doped ZnO/Ag nanocomposites (3 and 5 at.%) and pristine ZnO nanoparticles were synthesized via a green route using Meriandra bengalensis leaf extract as a sustainable bioreducing and capping agent for efficient indigo carmine dye removal. The nanomaterials were comprehensively characterized (FTIR, XRD, UV-DRS, FE-SEM, HR-TEM, XPS, AFM, Raman, BET) to confirm their structural and morphological features. Adsorption studies varying pH, temperature, catalyst dosage, and dye concentration revealed pseudo-first-order kinetics and Freundlich isotherm behavior, indicating heterogeneous multilayer adsorption. Thermodynamic analyses confirmed a spontaneous, endothermic process, with excellent recyclability over four cycles. Validation with real wastewater demonstrated strong practical applicability. The synergistic combination of Eu³⁺ doping and Ag decoration enhanced charge separation, suppressed electron-hole recombination, and improved photocatalytic, antioxidant, and adsorption performance. This eco-friendly strategy provides a scalable pathway for designing multifunctional nanomaterials for next-generation environmental and practical applications.

铕掺杂ZnO/Ag纳米复合材料（3和5 at）。以芒萁叶提取物为可持续生物还原剂和封盖剂，通过绿色途径合成了氧化锌纳米颗粒，有效去除靛蓝胭脂红染料。采用FTIR、XRD、UV-DRS、FE-SEM、HR-TEM、XPS、AFM、Raman、BET等方法对纳米材料进行了综合表征，以确定其结构和形态特征。不同pH、温度、催化剂用量和染料浓度的吸附研究显示出准一级动力学和Freundlich等温线行为，表明多相吸附。热力学分析证实了一个自发的吸热过程，在四个循环中具有良好的可回收性。经实际废水验证，具有较强的实用性。Eu3+掺杂和Ag修饰的协同作用增强了电荷分离，抑制了电子-空穴复合，提高了光催化、抗氧化和吸附性能。这种环保策略为设计下一代环境和实际应用的多功能纳米材料提供了可扩展的途径。

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引用次数: 0