FlatChem最新文献_第5页

Graphene-based adsorbents for selective recovery of rare earth elements from mining wastes: A review 石墨烯基吸附剂对矿山废弃物中稀土元素的选择性回收研究进展

IF 6.2 3区材料科学 Q2 CHEMISTRY, PHYSICAL

FlatChem

Pub Date : 2025-10-14 DOI: 10.1016/j.flatc.2025.100954

Noel I. Kaaya , Maheswara R. Vegi , Athanas S. Macheyeki

The global demand for rare earth elements (REEs) is steadily increasing due to their essential role in green energy technologies, advanced electronics, medical applications, and defense systems. This rising demand has created a supply–demand imbalance, encouraging the search for alternative sources and cost-effective recovery methods, especially from secondary resources such as mining wastes. However, recovering REEs from mine effluents remains challenging due to their complex chemical nature, including high ionic strength and extreme pH levels, which limit the effectiveness of conventional adsorbents.

This review assesses the economic potential of REE recovery from mining wastes. It explores recent advancements in graphene-based adsorbents for REE recovery. A review of 31 studies published between 2015 and 2025 indicates that mining wastes have an average outlook coefficient (C_outl) of 0.91 and a critical REE percent of 33.12, showing strong potential for economic recovery, particularly from coal and metal mining residues. Graphene-based adsorbents offer promising features, including high surface area, adjustable surface properties, mechanical strength, and reusability. Improvements in graphene, such as functionalization with biomolecules, the development of three-dimensional structures, and magnetization, have further increased its adsorption capacity and durability. However, achieving high selectivity for individual REEs remains a key challenge.

Ion imprinting presents a potential solution by enabling the design of specific recognition sites that enhance selectivity and binding efficiency. Combining this approach with advanced material design can lead to next-generation graphene-based adsorbents, supporting efficient REE recovery from mining wastes and contributing to sustainable resource management and circular economy goals.

由于稀土元素在绿色能源技术、先进电子、医疗应用和国防系统中的重要作用，全球对稀土元素（ree）的需求正在稳步增长。这种不断增加的需求造成了供需不平衡，鼓励寻找替代来源和具有成本效益的回收方法，特别是从采矿废料等二次资源中。然而，从矿山废水中回收稀土元素仍然具有挑战性，因为它们具有复杂的化学性质，包括高离子强度和极端pH值，这限制了传统吸附剂的有效性。本文评价了从采矿废物中回收稀土元素的经济潜力。它探讨了石墨烯基吸附剂用于稀土回收的最新进展。对2015年至2025年间发表的31项研究的回顾表明，采矿废物的平均前景系数（Coutl）为0.91，临界REE百分比为33.12，显示出强劲的经济复苏潜力，特别是煤炭和金属采矿残留物。石墨烯吸附剂具有高表面积、可调表面性能、机械强度和可重复使用等优点。石墨烯的改进，如生物分子功能化、三维结构的发展和磁化，进一步提高了其吸附能力和耐用性。然而，实现对单个稀土元素的高选择性仍然是一个关键的挑战。离子印迹提供了一个潜在的解决方案，使设计特定的识别位点，提高选择性和结合效率。将这种方法与先进的材料设计相结合，可以产生下一代石墨烯吸附剂，支持从采矿废物中有效回收稀土元素，并有助于可持续资源管理和循环经济目标。

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引用次数: 0

PolyRingene: A novel 2D carbon allotrope explored via first-principles and machine learning interatomic potentials 聚壬烯：一种新的二维碳同素异形体，通过第一性原理和机器学习原子间电位进行了探索

IF 6.2 3区材料科学 Q2 CHEMISTRY, PHYSICAL

FlatChem

Pub Date : 2025-10-11 DOI: 10.1016/j.flatc.2025.100951

Rodrigo A.F. Alves , Hugo X. Rodrigues , José A.S. Laranjeira , Fábio L.L. Mendonça , Alysson M.A. Silva , Julio R. Sambrano , Luiz A. Ribeiro Junior

We report the computational design and characterization of PolyRingene, a novel two-dimensional carbon allotrope with a lattice composed of 3-, 4-, 5-, 6-, 8-, and 10-membered rings. First-principles calculations confirm the energetic, dynamical, and thermal stability of this material through phonon dispersion and ab initio molecular dynamics simulations. Electronic structure analysis reveals a metallic character. Mechanical response under uniaxial strain shows anisotropy, with Young’s modulus of 610 GPa along the x-direction and 560 GPa along the y-direction. Fracture occurs at 12% strain, accompanied by the formation of linear atomic carbon chains that bridge the ruptured regions. To enable large-scale simulations, we developed a machine learning interatomic potential (MLIP) trained on density functional theory data. The MLIP accurately reproduces phonon spectra and stress–strain responses, outperforming traditional empirical potentials and demonstrating excellent transferability.

我们报道了PolyRingene的计算设计和表征，PolyRingene是一种新型的二维碳同素异形体，其晶格由3-，4-,5-,6-，8-和10元环组成。第一性原理计算通过声子色散和从头算分子动力学模拟证实了这种材料的能量、动力学和热稳定性。电子结构分析显示其具有金属性质。单轴应变下的力学响应表现出各向异性，沿x方向的杨氏模量为610 GPa，沿y方向的杨氏模量为560 GPa。在12%的应变下发生断裂，并伴随着线性原子碳链的形成，从而桥接断裂区域。为了实现大规模模拟，我们开发了一种基于密度泛函理论数据训练的机器学习原子间势（MLIP）。MLIP精确地再现声子光谱和应力应变响应，优于传统的经验电位，并表现出优异的可转移性。

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引用次数: 0

Utilization of copper-coordinated metal-organic framework materials for crystal violet removal: Modeling using box-behnken experimental design 利用铜配位金属有机骨架材料去除结晶紫：采用盒式实验设计建模

IF 6.2 3区材料科学 Q2 CHEMISTRY, PHYSICAL

FlatChem

Pub Date : 2025-10-10 DOI: 10.1016/j.flatc.2025.100950

Şebnem Şimşiroğlu , Taner Aslan , Berrin Saygı Yalçın , Erol Erçağ , Jülide Hızal

This study aims to evaluate the effectiveness of pyromellitic diimide carboxylic acid-derived with high retention capacity MOFs as adsorbents for contaminant removal, employing CV as a model pollutant. The adsorbents were synthesized by individually treating the organic linkers with Cu(II) solution at 100–110 °C for 12 h. The characterization of the adsorbents was conducted using FTIR, SEM, PXRD, TGA, BET/N₂ surface area analysis, zeta potential measurement, and potentiometric titration. The specific surface areas were determined to be 780.64 m²/g for PDBA-Cu and 445.69 m²/g for PDPA-Cu. The sorption properties of the produced adsorbents were analyzed, considering contact time, initial concentration, pH, and temperature. The adsorptions fitted to the PSOM, exhibiting k values of 0.001 and 0.002 for PDBA-Cu and PDPA-Cu, respectively, in conjunction with the presence of pore diffusion. The CV adsorption on PDPA-Cu conformed to the Freundlich isotherm and had Langmuir characteristics for PDBA-Cu. The Q_max values were yielded as 322.58 mg/g for PDBA-Cu and 400.00 mg/g for PDPA-Cu at 313 K. The maximum adsorptions were achieved at pH levels between 2 and 7 for PDBA-Cu and between 2 and 9 for PDPA-Cu. Electrostatic and π-π interactions have played a role in the CV adsorption on fabricated MOFs. The adsorptions were optimized via modeling with Response Surface Methodology and Box-Behnken Design, based on the critical process variables of contact time, temperature, and initial dye concentration. The findings of this study validated the superior efficacy of the synthesized MOFs in eliminating cationic organic dyes and their applicability in treatment methods.

本研究以CV为模型污染物，评价高截留容量的邻苯二甲酰二亚胺羧酸衍生的mof吸附剂对污染物的去除效果。用Cu（II）溶液在100-110℃下分别处理有机连接剂12 h，合成了吸附剂。采用FTIR、SEM、PXRD、TGA、BET/N2表面积分析、zeta电位测量和电位滴定等方法对吸附剂进行了表征。PDBA-Cu的比表面积为780.64 m2/g， PDPA-Cu的比表面积为445.69 m2/g。考虑接触时间、初始浓度、pH和温度等因素，对所制吸附剂的吸附性能进行了分析。PDBA-Cu和PDPA-Cu的k值分别为0.001和0.002，与孔隙扩散的存在相吻合。CV对PDBA-Cu的吸附符合Freundlich等温线，具有Langmuir吸附特性。在313 K下，PDBA-Cu的Qmax值为322.58 mg/g， PDPA-Cu的Qmax值为400.00 mg/g。PDBA-Cu在pH值为2 ~ 7时吸附效果最好，PDPA-Cu在pH值为2 ~ 9时吸附效果最好。静电和π-π相互作用对制备的MOFs吸附CV起重要作用。基于接触时间、温度和初始染料浓度等关键工艺变量，通过响应面法和Box-Behnken设计对吸附进行了优化。本研究结果验证了合成的MOFs在去除阳离子有机染料方面的优异效果及其在处理方法上的适用性。

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引用次数: 0

Exploring MBenes: Synthesis, structure, and multidisciplinary applications 探索MBenes：合成、结构和多学科应用

IF 6.2 3区材料科学 Q2 CHEMISTRY, PHYSICAL

FlatChem

Pub Date : 2025-10-09 DOI: 10.1016/j.flatc.2025.100952

Manjot Kaur , Piyush Sharma , Unni Krishnan , Kamalpreet Kaur , Shagun Kainth , Akshay Kumar

MBenes, a novel class of two-dimensional transition metal borides, have emerged as promising candidates for a wide range of advanced technological applications owing to their unique physicochemical properties. This review presents a comprehensive overview of the recent progress in the synthesis strategies of MBenes, emphasizing top-down and bottom-up approaches, structural characteristics, and surface terminations. The intrinsic metallic conductivity, high mechanical strength, tunable electronic properties, and chemical stability of MBenes position them as attractive materials for diverse fields, including energy storage and conversion, catalysis, electronics, sensors, and biomedicine. Special attention is given to the structure–property relationships and the challenges associated with scalable synthesis and integration into functional devices. Finally, we highlight key opportunities and future directions for accelerating the exploration of MBenes in multidisciplinary research landscapes.

MBenes是一类新型的二维过渡金属硼化物，由于其独特的物理化学性质，已成为广泛先进技术应用的有希望的候选者。本文综述了MBenes合成策略的最新进展，重点介绍了自顶向下和自底向上的合成方法、结构特征和表面终止。MBenes固有的金属导电性、高机械强度、可调谐的电子性能和化学稳定性使其成为多种领域的有吸引力的材料，包括储能和转化、催化、电子、传感器和生物医学。特别关注结构-性质关系以及与可扩展合成和集成到功能器件相关的挑战。最后，我们强调了在多学科研究领域加速探索MBenes的关键机会和未来方向。

引用次数: 0

Fluorine-free sustainable synthesis of two-dimensional molybdenum boride (MoB) embedded hydrogel for advanced flexible all solid-state supercapacitor with excellent long-term stability 无氟可持续合成二维硼化钼（MoB）嵌入水凝胶用于具有优异长期稳定性的先进柔性全固态超级电容器

IF 6.2 3区材料科学 Q2 CHEMISTRY, PHYSICAL

FlatChem

Pub Date : 2025-10-06 DOI: 10.1016/j.flatc.2025.100948

Om Priya Nanda, Sushmee Badhulika

Two-dimensional transition metal borides that possess sandwich-like structures similar to MXenes and exhibit excellent electrical conductivity. Here, we report a fluoride-free ecological approach for synthesizing 2D molybdenum-boride (MoB) tailored hydrogel for flexible supercapacitors. Successful formation of MoB with distinct 2D layered nanosheet morphology and stable crystalline structure is achieved through physicochemical analyses. The key advancement here is the integration of 2D MoB into polyvinyl alcohol (PVA) and acrylamide matrix, forming a flexible hydrogel electrode that utilizes a combination of faradaic and non-faradaic charge storage mechanisms. A flexible solid-state asymmetric supercapacitor is developed by pairing MoB hydrogel with activated carbon (AC) hydrogel (MoB//AC). This device delivers an impressive areal capacitance of 280 mF/cm² at 2 mA/cm², with an energy density of 61 μWh/cm² at 1250 μW/cm² power density. MoB//AC also exhibits good durability by retaining 68.2 % capacitance after 8500 cycles and 90 % when flexed to 60°, signifying its excellent flexibility. This performance highlights the MoB//AC hydrogel based device has potential to enhance energy storage efficiency and stability in advanced flexible supercapacitor applications.

二维过渡金属硼化物具有类似于MXenes的三明治状结构，并具有优异的导电性。在这里，我们报告了一种无氟生态方法，用于合成用于柔性超级电容器的二维硼化钼（MoB）定制水凝胶。通过物理化学分析，成功制备了具有明显二维层状纳米片形貌和稳定晶体结构的MoB。这里的关键进步是将二维MoB集成到聚乙烯醇（PVA）和丙烯酰胺基体中，形成一个灵活的水凝胶电极，该电极结合了法拉第和非法拉第电荷存储机制。将MoB水凝胶与活性炭（AC）水凝胶（MoB//AC）配对，制备了柔性固态不对称超级电容器。该器件在2 mA/cm2时具有280 mF/cm2的面电容，在1250 μW/cm2功率密度下具有61 μWh/cm2的能量密度。MoB//AC还具有良好的耐久性，在8500次循环后保持68.2%的电容，弯曲到60°时保持90%的电容，这表明它具有出色的灵活性。这一性能突出了基于MoB//AC水凝胶的器件在先进的柔性超级电容器应用中具有提高储能效率和稳定性的潜力。

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引用次数: 0

In-situ synthesis of RGO/Fe3O4 nanocomposites: Optimizing electromagnetic interference shielding properties 原位合成氧化石墨烯/Fe3O4纳米复合材料：优化电磁干扰屏蔽性能

IF 6.2 3区材料科学 Q2 CHEMISTRY, PHYSICAL

FlatChem

Pub Date : 2025-10-04 DOI: 10.1016/j.flatc.2025.100949

Bing Wei , Changyu Liu , Fan Feng , Yupei Li , Qingwen Qu , Ailian Liu , Xinming Gao , Huizhu Xu , Jue Wang

Addressing escalating electromagnetic radiation pollution, this research emphasizes the development of advanced materials with enhanced electromagnetic interference (EMI) shielding properties. In this study, reduced graphene oxide/Fe₃O₄ (RGO/Fe₃O₄) nanocomposites are synthesized via a one-step in-situ method. During the synthesis process, graphene oxide (GO) is reduced into reduced graphene oxide (RGO) by Fe²⁺ ions, while Fe₃O₄ nanoparticles are concurrently formed on the RGO surface, yielding the nanocomposite in a single reaction. Adjustments in Fe²⁺ concentration facilitate precise control over the RGO-to-Fe₃O₄ mass ratio, enabling tailored modulation of the EMI shielding efficacy in the resultant nanocomposites. EMI shielding is achieved through synergistic mechanisms, including superior dielectric loss properties of RGO, intrinsic magnetic loss characteristics of Fe₃O₄ and interfacial polarization loss at the RGO-Fe₃O₄ junction. Comparative analysis reveals optimal performance of the RGO/Fe₃O₄ when the GO-to-FeCl₂·4H₂O mass ratio is set to 1:15, achieving average total shielding effectiveness (SE_T) values of 89.8 dB.

针对不断升级的电磁辐射污染，本研究强调开发具有增强电磁干扰（EMI）屏蔽性能的先进材料。在本研究中，通过一步原位法合成了还原氧化石墨烯/Fe3O4 （RGO/Fe3O4）纳米复合材料。在合成过程中，氧化石墨烯（GO）被Fe2+离子还原为还原性氧化石墨烯（RGO），而氧化石墨烯表面同时形成Fe3O4纳米颗粒，一次反应生成纳米复合材料。调整Fe2+浓度有助于精确控制rgo与fe3o4的质量比，从而使合成的纳米复合材料能够定制调制EMI屏蔽效能。电磁干扰屏蔽是通过协同机制实现的，包括RGO优越的介电损耗特性、Fe3O4的固有磁损耗特性和RGO-Fe3O4结的界面极化损耗。对比分析表明，当go与fecl2·4H2O质量比为1:15时，RGO/Fe3O4性能最佳，平均总屏蔽效能（set）为89.8 dB。

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引用次数: 0

Layered double hydroxide materials based next-generation photocatalytic system for CO2 reduction and H2 production applications 基于层状双氢氧化物材料的下一代光催化系统用于CO2还原和H2生产

IF 6.2 3区材料科学 Q2 CHEMISTRY, PHYSICAL

FlatChem

Pub Date : 2025-10-03 DOI: 10.1016/j.flatc.2025.100947

Malathi Arumugam , N. Subha , A. Ravi Sankar , Thillai Sivakumar Natarajan , Hsi-Hsien Yang

Photocatalytic technology is advancing rapidly, offering enormous potential for fostering a sustainable future. Its ability to enable clean energy production through eco-friendly applications has made it a key component of global sustainability efforts. Layered double hydroxides (LDHs) have emerged as promising photocatalysts owing to their unique structural, electronic, and chemical properties. These qualities place LDHs at the forefront of addressing emerging energy and environmental challenges, further strengthening their importance in photocatalytic applications. The various compositions of LDHs, achieved through the selective variation of metal cations (M²⁺ and M³⁺), enable precise bandgap engineering to optimize light absorption. Furthermore, LDHs exhibit remarkable stability under ultraviolet and visible light, ensuring their durability over time. Their light-harvesting and catalytic activities are further enhanced when integrated with other materials, thereby expanding their application scope. These synergistic properties enable LDHs to excel in photocatalytic processes aimed at clean and sustainable energy generation. This review emphasizes LDH-based heterostructures for photocatalytic energy conversion, particularly in hydrogen (H₂) production and carbon dioxide (CO₂) reduction, highlighting their considerable potential to drive the development of a durable LDH photocatalytic system for future sustainable energy solutions is also presented.

光催化技术正在迅速发展，为促进可持续发展的未来提供了巨大的潜力。它通过环保应用实现清洁能源生产的能力使其成为全球可持续发展努力的关键组成部分。层状双氢氧化物（LDHs）由于其独特的结构、电子和化学性质而成为一种很有前途的光催化剂。这些特性使ldh处于解决新兴能源和环境挑战的前沿，进一步加强了它们在光催化应用中的重要性。通过选择性改变金属阳离子（M2+和M3+）来实现LDHs的各种组成，使精确的带隙工程能够优化光吸收。此外，ldh在紫外线和可见光下表现出显著的稳定性，确保了它们的耐久性。与其他材料结合后，其光收集和催化活性进一步增强，从而扩大了其应用范围。这些协同特性使ldh在旨在清洁和可持续能源生产的光催化过程中表现出色。这篇综述强调了基于LDH的异质结构光催化能量转换，特别是在氢气（H2）生产和二氧化碳（CO2）还原方面，强调了它们在推动未来可持续能源解决方案中持久的LDH光催化系统的发展方面的巨大潜力。

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引用次数: 0

Enhanced adsorption-photocatalysis of organic pollutants using an Ag-CuBi2O4/WO3/SL-GO nanocomposite Ag-CuBi2O4/WO3/SL-GO纳米复合材料增强对有机污染物的吸附-光催化作用

IF 6.2 3区材料科学 Q2 CHEMISTRY, PHYSICAL

FlatChem

Pub Date : 2025-10-01 DOI: 10.1016/j.flatc.2025.100946

Ohood A. Alghamdi , Yassine Slimani , Huseyin Tombuloglu , Abdelkrim Mekki , Abuzar Khan

Water pollution poses a serious threat to ecosystems and human health, requiring effective and sustainable treatment strategies. While conventional methods often fall short, there remains a significant research gap in developing highly efficient hybrid systems that combine enhanced adsorption with potent visible light photocatalysis. Herein, we report the novel synthesis of a unique 1D/0D/2D heterostructure photocatalyst, which consists of Ag-modified CuBi₂O₄ nanorods and WO₃ nanoparticles decorated on single-layer graphene oxide (SL-GO) sheets, targeting both significantly enhanced methylene blue (MB) adsorption and photodegradation. The Ag-CuBi₂O₄/WO₃/SL-GO nanocomposite was synthesized via combined hydrothermal/ultrasonication methods. XRD, SEM, EDX, FTIR, XPS, PL, and Raman techniques confirm its successful preparation. The analyses demonstrated a substantial enhancement in MB adsorption and near-complete MB photodegradation (99.5 %) under visible light, with a notably high kinetic rate constant (0.0319 min⁻¹). Its adsorption capacity was also 4–10 times larger than that of individual components and binary nanocomposite material. The enhanced performance is primarily ascribed to the reduced band gap, high surface area and exceptional electron conductivity of SL-GO, efficient charge separation, reduced electron-hole recombination, enhanced visible light absorption capacity, and synergistic integration of Ag-CuBi₂O₄/WO₃ and SL-GO features. In addition, the nanocomposite was non-genotoxic, which assures its safe use in environmental applications. This study presents a promising and low-energy approach for water remediation, highlighting the potential of the hybrid Ag-CuBi₂O₄/WO₃/SL-GO photocatalyst for sustainable environmental applications and can guide future designs for the removal of diverse pollutants.

水污染对生态系统和人类健康构成严重威胁，需要有效和可持续的治理战略。虽然传统的方法往往不足，但在开发高效的混合系统方面仍然存在重大的研究差距，该系统将增强吸附与强可见光催化相结合。在此，我们报道了一种独特的1D/0D/2D异质结构光催化剂的新合成，该催化剂由ag修饰的CuBi2O4纳米棒和WO3纳米颗粒组成，装饰在单层氧化石墨烯（ls - go）片上，旨在显著增强亚甲基蓝（MB）的吸附和光降解。采用水热/超声复合法制备了Ag-CuBi2O4/WO3/SL-GO纳米复合材料。XRD， SEM， EDX， FTIR， XPS， PL和Raman技术证实了其成功制备。分析表明，在可见光下，甲基溴的吸附和近乎完全的甲基溴光降解（99.5%）显著增强，动力学速率常数显著提高（0.0319 min−1）。其吸附量也比单组分和二元纳米复合材料大4-10倍。这种增强的性能主要归因于SL-GO的带隙减小、高表面积和优异的电子导电性、有效的电荷分离、减少的电子空穴复合、增强的可见光吸收能力以及Ag-CuBi2O4/WO3和SL-GO的协同集成特性。此外，纳米复合材料无基因毒性，这保证了其在环境应用中的安全使用。该研究提出了一种有前途的低能耗水修复方法，突出了Ag-CuBi2O4/WO3/SL-GO混合光催化剂在可持续环境应用中的潜力，并可以指导未来设计去除各种污染物的方法。

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引用次数: 0

A highly efficient DNA biosensor based on 2D-europium/MoS₂ nanocomposites for rifampicin detection 基于二维铕/MoS 2纳米复合材料的高效DNA生物传感器用于检测利福平

IF 6.2 3区材料科学 Q2 CHEMISTRY, PHYSICAL

FlatChem

Pub Date : 2025-10-01 DOI: 10.1016/j.flatc.2025.100945

Afsaneh Mousa Pour , Hadi Mahmoudi-Moghaddam , Zahra Garkani-Nejad

In this study, a sensitive rifampicin (RF) detection platform was established using a highly efficient electrochemical DNA biosensor. The sensing platform was constructed through the modification of a carbon paste electrode (CPE) with two-dimensional europium(III)–molybdenum disulfide nanocompsites (2D-Eu(III)/MoS₂) and immobilized double-stranded DNA. This work was designed to leverage the synergistic properties of MoS₂ nanocompsites and europium(III) to achieve enhanced electrochemical performance for drug–DNA interaction analysis. The nanomaterial was characterized using scanning electron microscopy (SEM), X-ray diffraction (XRD), and energy-dispersive X-ray (EDX) techniques. Differential pulse voltammetry (DPV) was employed to monitor the guanine response, which decreased significantly due to the preferential binding of RF to DNA. The biosensor exhibited excellent sensitivity of 0.103 μA/μM, a limit of detection (LOD) of 38.0 nM, and a linear detection range of 0.09–65.0 μM. Successful application was demonstrated in real samples, including pharmaceutical formulations, serum, and urine. In real sample analysis, the biosensor showed recoveries of 96–104 % with relative standard deviation (RSD) below 4.0 %, demonstrating high accuracy and reliability for practical applications. The innovative aspect of this study was in the design of a 2D-Eu(III)/MoS₂-based nanoplatform that enhances DNA loading capacity and amplifies electrochemical activity, providing a superior sensing system for RF compared to previously reported sensors.

本研究利用高效电化学DNA生物传感器建立了灵敏的利福平检测平台。该传感平台是通过用二维铕(III) -二硫化钼纳米复合材料（2D-Eu(III)/MoS 2）和固定双链DNA修饰碳糊电极（CPE）构建的。这项工作旨在利用MoS 2纳米复合材料和铕（III）的协同特性来提高药物- dna相互作用分析的电化学性能。利用扫描电子显微镜（SEM）、x射线衍射（XRD）和能量色散x射线（EDX）技术对纳米材料进行了表征。差分脉冲伏安法（DPV）用于监测鸟嘌呤响应，由于RF与DNA的优先结合，鸟嘌呤响应显著降低。该传感器灵敏度为0.103 μA/μM，检出限为38.0 nM，线性检测范围为0.09 ~ 65.0 μM。成功的应用证明了实际样品，包括药物配方，血清和尿液。在实际样品分析中，该传感器的回收率为96 ~ 104%，相对标准偏差（RSD）小于4.0%，具有较高的准确性和可靠性。该研究的创新之处在于设计了一种基于2D-Eu(III)/MoS 2的纳米平台，该平台可以增强DNA负载能力并放大电化学活性，与之前报道的传感器相比，为射频提供了更好的传感系统。

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引用次数: 0

Tris(8-hydroxyquinolinato)aluminum-doped stretchable alternating current electroluminescent devices with tunable multicolor emission for patterned display application 具有可调多色发射的掺铝可拉伸交流电致发光器件，用于图案显示

IF 6.2 3区材料科学 Q2 CHEMISTRY, PHYSICAL

FlatChem

Pub Date : 2025-09-27 DOI: 10.1016/j.flatc.2025.100941

Huan Gao , Yilin Guo , Haoran Li , Zimen Yu , Yugang Chen , Qing Cao , Yiren Liu , Hongtao Cao , Shasha Wang , Linghai Xie

Stretchable alternating current electroluminescent (ACEL) devices that emit multiple colors are essential for soft electronics and displays. However, traditional ACEL devices face significant challenges in terms of color tunability and stretchability. This study introduced tris(8-hydroxyquinolinato)aluminum (Alq₃) into the emitting layer for the construction of a multicolored ACEL device, which achieves color-tunable emissions from blue to red (464–588 nm) by adjusting the mass ratio of Alq₃ to ZnS-based phosphors. Polydimethylsiloxane was integrated as a flexible matrix and Ag nanowires as stretchable electrodes to endow the device with mechanical stretchability up to 240 %, while maintaining stable emission under 50 % strain. Structural and photophysical characterizations have confirmed that the incorporation of Alq₃ does not affect the crystallinity of the phosphors but regulates emission through charge transfer. Patterned multicolor display arrays and a customizable “CMSOD” emblem have been fabricated, highlighting potential applications in information displays. This work presents a straightforward method for fabricating stretchable ACEL devices with tunable color output through organic-inorganic hybrids, offering an alternative ACEL device for soft optoelectronics with colorful displays.

可拉伸的交流电致发光（ACEL）器件发出多种颜色是必不可少的软电子和显示。然而，传统的ACEL器件在颜色可调性和可拉伸性方面面临着重大挑战。本研究将三（8-羟基喹啉）铝（Alq3）引入到发射层中，构建了多色ACEL器件，通过调节Alq3与zns基荧光粉的质量比，实现了从蓝到红（464-588 nm）的颜色可调发射。将聚二甲基硅氧烷作为柔性基体，银纳米线作为可拉伸电极，使器件具有高达240%的机械拉伸性，同时在50%应变下保持稳定的发射。结构和光物理表征证实Alq3的加入不会影响荧光粉的结晶度，而是通过电荷转移调节发光。图案多色显示阵列和可定制的“CMSOD”标志已经制造出来，突出了在信息显示方面的潜在应用。这项工作提出了一种通过有机-无机混合材料制造具有可调谐颜色输出的可拉伸ACEL器件的简单方法，为具有彩色显示的软光电子器件提供了一种替代ACEL器件。

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