Diamond and Related Materials最新文献_第3页

Saffron-derived carbon dot-embedded hyaluronic acid hydrogels for synergistic photothermal and ROS-mediated therapy of melanoma 藏红花衍生碳点嵌入透明质酸水凝胶用于光热和ros介导的黑色素瘤的协同治疗

IF 5.1 3区材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS

Diamond and Related Materials

Pub Date : 2026-01-20 DOI: 10.1016/j.diamond.2026.113336

Wenli Xu , Chang Wang , Yu Wang , Shuang Li , Dan Liu , Yuyang Cen , Xinyu Liu , Jiayi Peng , Zhengkui Zhang , Jiaojiao Zhao

Melanoma, a highly aggressive cutaneous tumor, demands the development of highly biocompatible and efficient photothermal nanomaterials to advance photothermal therapy. In this study, we synthesized saffron-derived carbon dots (S-CDs) via a solvothermal method using saffron, a traditional Chinese medicine, as the carbon source. Characterization by high-resolution transmission electron microscopy showed that the S-CDs are well-monodispersed with an average size of about 2.4 nm and exhibit a photothermal conversion efficiency of 31.9%. Under 808 nm laser irradiation, S-CDs demonstrated both concentration-dependent temperature increase and reactive oxygen species (ROS) generation. The critical role of ROS in the cytotoxic mechanism was confirmed by scavenger assays. To enhance tumor retention, we developed an injectable hydrogel (S-CDs@HA) by encapsulating S-CDs into an aldehyde-modified hyaluronic acid matrix. The hydrogel exhibited sustained release kinetics, enabling sustained release over 144 h. In a B16F10 melanoma mouse model, local administration of S-CDs@HA combined with laser irradiation significantly suppressed tumor growth, as evidenced by histopathological analysis revealing extensive necrosis and decreased proliferation. No systemic toxicity was observed based on body weight monitoring and organ histology. This work thus presents not only a novel natural product-derived photothermal agent but also delivers an injectable hydrogel platform for the synergistic photothermal and ROS-mediated therapy of melanoma.

黑色素瘤是一种高度侵袭性的皮肤肿瘤，需要开发高度生物相容性和高效的光热纳米材料来推进光热治疗。本研究以中药藏红花为碳源，采用溶剂热法制备了藏红花碳点（S-CDs）。高分辨率透射电镜表征表明，S-CDs具有良好的单分散性，平均尺寸约为2.4 nm，光热转换效率为31.9%。在808 nm激光照射下，S-CDs表现出浓度依赖的温度升高和活性氧（ROS）的生成。清除剂试验证实了活性氧在细胞毒性机制中的关键作用。为了增强肿瘤潴留，我们开发了一种可注射的水凝胶（S-CDs@HA），将S-CDs包埋在醛修饰的透明质酸基质中。在B16F10黑色素瘤小鼠模型中，局部给药S-CDs@HA联合激光照射显著抑制肿瘤生长，组织病理学分析显示广泛坏死和增殖减少。根据体重监测和器官组织学，未观察到全身毒性。因此，这项工作不仅提出了一种新的天然产物衍生的光热剂，而且提供了一种可注射的水凝胶平台，用于光热和ros介导的黑色素瘤的协同治疗。

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引用次数: 0

Application of an unmodified boron-doped diamond electrode for the determination of tolnaftate in pharmaceutical samples and artificial sweat samples 未经修饰的掺硼金刚石电极测定药物样品和人工汗液样品中的丙戊酸盐

IF 5.1 3区材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS

Diamond and Related Materials

Pub Date : 2026-01-20 DOI: 10.1016/j.diamond.2026.113340

Katarzyna Mielech-Łukasiewicz , Paulina Danilczyk

The work presents a new procedure of determination of an antifungal agent tolnaftate (TLN). A quick and simple analysis is proposed, based on the reaction of electrochemical oxidation of the studied analyte on a first-time used bare boron-doped diamond electrode. Before the measurement, the BDD electrode was subject to procedure, which, however, involved an innovative approach of multiple cycling in electrolyte with 0.1 mol/L solution of NaClO₄, in the potential range from −2.9 V to +0.3 V. Sensitive and accurate determination of TLN was possible on an unmodified BDD electrode with the use of square wave voltammetry (SWV), never used with this analyte before. The environment of the studied reaction was optimized in the work, and the B-R buffer with pH = 2.09 proved to be the best electrolyte. An irreversible oxidation peak was obtained in the solution at the potential of 1.3 V (vs. SCE). The analysis of the impact of scan rate on the height of TLN oxidation peak led to the conclusion that the recorded currents have a diffusion character. In the optimum conditions of SWV operation parameters, a linear range of concentrations was obtained from 4.9·10⁻⁶ to 8.6·10⁻⁵ mol/L, with LOD of 4.3·10⁻⁷ mol/L, LOQ of 1.3·10⁻⁶ mol/L, and the coefficient of determination close to one (0.9977). TLN was successfully determined in a pharmaceutical preparation and in artificial sweat. The obtained recovery of the proposed procedure was in the range from 94.95% to 100.92%.

本文提出了一种测定抗真菌药物托萘乙酸酯（TLN）含量的新方法。本文提出了一种快速、简便的分析方法，该方法基于所研究的分析物在首次使用的裸掺杂硼金刚石电极上的电化学氧化反应。在测量之前，BDD电极要经过一个程序，该程序涉及到一个创新的方法，即在−2.9 V至+0.3 V的电位范围内，在含有0.1 mol/L NaClO4溶液的电解质中多次循环。使用方波伏安法（SWV）可以在未经修饰的BDD电极上灵敏准确地测定TLN，而这种方法以前从未用于该分析物。工作中对反应环境进行了优化，pH = 2.09的B-R缓冲液为最佳电解液。溶液在1.3 V （vs. SCE）电位下出现不可逆氧化峰。通过分析扫描速率对TLN氧化峰高度的影响，得出记录电流具有扩散特征的结论。在最佳SWV操作条件下，样品浓度在4.9·10−6 ~ 8.6·10−5 mol/L范围内呈线性关系，LOD为4.3·10−7 mol/L， LOQ为1.3·10−6 mol/L，测定系数接近1（0.9977）。成功地测定了药物制剂和人工汗液中的TLN。该方法的回收率为94.95% ~ 100.92%。

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引用次数: 0

Cobalt-doped CoxMn1-xFe2O4/SWAC composites for ultra-thin and high-performance electromagnetic wave absorption 钴掺杂CoxMn1-xFe2O4/SWAC超薄高性能电磁波吸收复合材料

IF 5.1 3区材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS

Diamond and Related Materials

Pub Date : 2026-01-19 DOI: 10.1016/j.diamond.2026.113329

Zhenfei Lv , Xuejia Zhang , Chong Lan , Jiahua Gao , Junchi Weng , Haotian Fan , Xu Lu , Xiulin Shen

The intensifying electromagnetic pollution in the 5G era urgently demands the development of highly efficient electromagnetic wave (EMW) absorbing materials. This study employs a surfactant-assisted solvothermal method, utilizing methylene blue-saturated woody activated carbon (SWAC) as a sustainable carbon matrix, to successfully synthesize a series of cobalt-doped Co_xMn_1-xFe₂O₄/SWAC composites with tunable molar ratios. By optimizing the Co/Mn molar ratio, the composite exhibits outstanding microwave absorption performance at an ultra-thin thickness of just 1.34 mm when x = 0.6: minimum reflection loss (RL_min) reaches −55.67 dB, and effective absorption bandwidth (EAB) spans 2.16 GHz (15.84–18 GHz). Its matched thickness was significantly reduced by 57% compared to the control sample. The performance enhancement stems from multiscale synergistic effects induced by cobalt doping: cobalt enhances hysteresis loss and optimizes the natural resonant frequency; the difference in ionic radii between Co²⁺ and Mn²⁺ ions induces lattice distortion, promoting interfacial polarization. These mechanisms collectively optimize the material's impedance matching and attenuation capabilities, realizing a synergistic magnetoelectric loss mechanism. This study provides a novel strategy for designing lightweight, high-performance, and sustainable broadband electromagnetic wave absorbers.

5G时代日益加剧的电磁污染，迫切要求开发高效的电磁波吸收材料。本研究采用表面活性剂辅助溶剂热法，以亚甲基蓝饱和木质活性炭（SWAC）为可持续碳基质，成功合成了一系列摩尔比可调的钴掺杂CoxMn1-xFe2O4/SWAC复合材料。通过优化Co/Mn摩尔比，当x = 0.6时，该复合材料在厚度仅为1.34 mm的超薄层上表现出优异的微波吸收性能，最小反射损耗（RLmin）达到- 55.67 dB，有效吸收带宽（EAB）跨越2.16 GHz （15.84 ~ 18 GHz）。与对照样品相比，其匹配厚度显著减少了57%。性能的增强源于钴掺杂引起的多尺度协同效应：钴增强了磁滞损耗，优化了固有谐振频率；Co2+和Mn2+离子的离子半径差异引起晶格畸变，促进界面极化。这些机制共同优化了材料的阻抗匹配和衰减能力，实现了协同的磁电损耗机制。本研究为设计轻量化、高性能和可持续的宽带电磁波吸收器提供了一种新的策略。

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引用次数: 0

Hierarchically organized carbon-modified sea-urchin NiCo2O4 electrodes for high-performance symmetric supercapacitors 用于高性能对称超级电容器的分层组织碳修饰海胆NiCo2O4电极

IF 5.1 3区材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS

Diamond and Related Materials

Pub Date : 2026-01-19 DOI: 10.1016/j.diamond.2026.113335

Ritesh Kumar , Shweta Tanwar , Shivani Kalia , Diksha , Rajesh K. Singh , A.L. Sharma

Systematic experimental studies were conducted to engineer optimized composite electrode structures for high-performance supercapacitors. Sea urchin-shaped NiCo₂O₄ (NICO) nanostructures were combined with two carbonaceous materials, activated carbon (AC) and multi-walled carbon nanotubes (MWCNTs), to maximize electrochemical properties. NICO/AC and NICO/MWCNT composites were fabricated using a physical blending technique. The two symmetric supercapacitor cell configurations NICO/AC||NICO/AC and NICO/MWCNT||NICO/MWCNT were fabricated. Among the above devices, the NICO/MWCNT-based device exhibited superior electrochemical performance with a high specific capacitance of 514 F g⁻¹ at discharge current density of 2 A g⁻¹, and exceptional energy density of 29.4 Wh kg⁻¹ and power density of 4000 W kg⁻¹. Notably, the device maintained 92.1% of its original capacitance after 4000 cycles with tremendous stability. Additionally, a 2032-coin cell device made of the optimized composite powered a blue LED uninterrupted for 35 min, which proves its feasibility for practical energy storage applications. These findings validate carbon-decorated sea urchin-shaped NiCo₂O₄ as an effective electrode material for prospective high-energy technologies.

为了优化高性能超级电容器的复合电极结构，进行了系统的实验研究。将海胆形状的NiCo2O4 （NICO）纳米结构与活性炭（AC）和多壁碳纳米管（MWCNTs）两种碳质材料结合，以最大限度地提高电化学性能。采用物理共混技术制备NICO/AC和NICO/MWCNT复合材料。制备了NICO/AC||NICO/AC和NICO/MWCNT||NICO/MWCNT两种对称的超级电容器电池结构。在上述器件中，NICO/ mwcnts基器件表现出优异的电化学性能，在放电电流密度为2 a g−1时具有514 F g−1的高比电容，能量密度为29.4 Wh kg−1，功率密度为4000 W kg−1。值得注意的是，该器件在4000次循环后保持了92.1%的原始电容，并具有极大的稳定性。此外，由优化的复合材料制成的2032硬币电池装置为蓝色LED不间断供电35分钟，这证明了其在实际储能应用中的可行性。这些发现证实了碳装饰海胆形状的NiCo2O4是未来高能技术的有效电极材料。

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引用次数: 0

Potential of diamond and tungsten disulfide water-based hybrid nanofluid aerosols at abrasive tool-work tribo-interfaces as lubricant medium and mechanism of lubrication 金刚石和二硫化钨水基杂化纳米流体气溶胶在磨具-工件摩擦界面作为润滑介质的潜力及润滑机理

IF 5.1 3区材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS

Diamond and Related Materials

Pub Date : 2026-01-19 DOI: 10.1016/j.diamond.2026.113350

Bandana Priyadarshini, Amitava Ghosh

The present work investigates anti-frictional characteristics of DI water-based diamond/WS₂ mono and hybrid nanofluids and explores the working mechanisms in a tribo-test which mimics real time tribo-interfaces, which evolve in an abrasive machining process. SDS is used as surfactant to produce all nanofluids to ensure stability. The hybrid nanofluid exhibited moderate zeta potential (‐40 mV) and the lowest wetting angle (33°) among all nanofluids. Anti-frictional characteristics are assessed at 10, 20 and 30 N loads using two different tribo-pair configurations. The first one is the standard ball-on-disc setup, where both ball and pin are made of AISI52100 steel. The second configuration is the customized pin-on-disc tribo-pair where a steel pin brazed with microcrystalline cBN abrasives (tool) slides against AISI 52100 steel disc (workpiece). In ball-on-disc test, WS₂ and hybrid nanofluid outperformed diamond nanofluid for reducing friction at tribo-interface at all three load conditions. In pin-on-disc configuration, which is closer to real-time condition, the maximum reduction in CoF from that in dry sliding is nearly 60%, but with diamond nanofluid at 10 N load. However, hybrid nanofluid, combining the synergistic micro–ball-bearing effect of diamond nanoparticles with the sheared exfoliation of WS₂ layers, is more effective at higher loads, achieving CoF reductions of 45% at 20 N and 40% at 30 N compared to dry sliding. Such deviation in tribological behaviour of mono and hybrid nanofluid underscores the necessity of customized tribo-pair configurations for reliable performance evaluation and proper selection of cutting fluid prior to real-time abrasive machining tests.

本文研究了DI水基金刚石/WS 2单纳米流体和混合纳米流体的抗摩擦特性，并通过模拟磨料加工过程中产生的实时摩擦界面的摩擦试验探讨了其工作机理。SDS作为表面活性剂用于生产所有纳米流体，以确保稳定性。混合纳米流体具有中等的zeta电位（‐40 mV）和最小的润湿角（33°）。使用两种不同的摩擦副配置评估了10、20和30 N载荷下的抗摩擦特性。第一种是标准的球-阀瓣设置，其中球和销都由AISI52100钢制成。第二种配置是定制的销盘摩擦副，其中用微晶cBN磨料（工具）钎焊的钢销滑动到AISI 52100钢盘（工件）。在球盘测试中，在所有三种载荷条件下，WS₂和混合纳米流体在减少摩擦界面摩擦方面都优于金刚石纳米流体。在更接近实时状态的针盘结构中，与干滑动相比，CoF的最大降幅接近60%，但金刚石纳米流体的载荷为10 N。然而，混合纳米流体结合了金刚石纳米颗粒的协同微球承载效应和WS₂层的剪切剥离，在更高的载荷下更有效，与干滑动相比，在20 N和30 N下，碳当量减少了45%和40%。单纳米流体和混合纳米流体在摩擦学行为上的这种偏差强调了定制摩擦副配置的必要性，以便在实时磨料加工测试之前进行可靠的性能评估和适当的切削液选择。

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引用次数: 0

Hot filament CVD growth of diamond sub-microcrystals with luminescent GeV− and SiV− color centers: parallel versus sequential doping with Ge and Si atoms 具有发光GeV -和SiV -色心的金刚石亚微晶体的热丝CVD生长：平行与顺序掺杂Ge和Si原子

IF 5.1 3区材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS

Diamond and Related Materials

Pub Date : 2026-01-19 DOI: 10.1016/j.diamond.2026.113347

Sergey A. Grudinkin , Kirill V. Bogdanov , Mikhail A. Baranov , Anton P. Tkach , Kirill I. Annas , Valery G. Golubev , Alexander V. Baranov

A comparative study on two methods for the synthesis of nano- and microdiamonds doped with GeV⁻ and SiV⁻ color centers, which emit simultaneously at 602 and 738 nm, was conducted. The results show that sequential doping of the growing crystal with Ge and Si atoms is preferable to parallel doping. This preference is due to the fact that the optimal growth conditions for achieving the highest emission intensity of each center differ significantly, including the methane concentration in the CH₄/H₂ gas mixture, the substrate temperature, and the growth time.

对比研究了同时发射602 nm和738 nm光的GeV -和SiV -色心掺杂纳米和微金刚石的合成方法。结果表明，在生长晶体中顺序掺杂Ge和Si原子优于平行掺杂。这种偏爱是由于实现每个中心最高排放强度的最佳生长条件存在显著差异，包括CH4/H2气体混合物中的甲烷浓度、底物温度和生长时间。

引用次数: 0

Tight-binding simulations of hydrogen storage in carbon nanotube-based materials 碳纳米管基材料中储氢的紧密结合模拟

IF 5.1 3区材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS

Diamond and Related Materials

Pub Date : 2026-01-19 DOI: 10.1016/j.diamond.2026.113348

Jinwoo Park , Sang Kyu Park , Seung-Yeol Jeon , Jungwon Kim , Hyungbum Park

This study investigates the molecular-level behavior and performance of carbon nanotube-based hydrogen storage systems using tight-binding simulations. Dynamic analysis of the effects of nanotube radius and metal additives revealed that while the absolute number of molecules adsorbed increases with increasing radius, the weight-based storage capacity ultimately decreases because the increase in the mass of the nanotube itself dominates. Conversely, doping titanium and lithium nanoparticles significantly enhances storage capacity through strong metal‑hydrogen interactions such as chemisorption and Kubas interaction. Specifically, doping with titanium nanoparticles promotes hydrogen storage on the CNT surface, resulting in enhanced reversible hydrogen storage capacity compared to other metal additives. Analysis results confirmed a critical point of initial hydrogen density of 0.015 g/cc, below which storage performance deteriorates rapidly due to kinetic energy imbalance. With effective storage capacities approximately up to 3.72 wt%, these findings offer essential foundational data for optimizing the design of high-efficiency hydrogen storage materials.

本研究利用紧密结合模拟研究了基于碳纳米管的储氢系统的分子水平行为和性能。对纳米管半径和金属添加剂影响的动态分析表明，虽然纳米管吸附的分子绝对数量随着半径的增加而增加，但由于纳米管本身质量的增加占主导地位，基于重量的存储容量最终会降低。相反，掺杂钛和锂纳米颗粒通过化学吸附和Kubas相互作用等强金属氢相互作用显著提高了存储容量。具体来说，与其他金属添加剂相比，掺杂钛纳米颗粒促进了碳纳米管表面的储氢，从而增强了可逆储氢能力。分析结果证实了初始氢密度为0.015 g/cc的临界点，在此临界点以下，由于动能不平衡，存储性能迅速恶化。有效储氢容量约为3.72 wt%，这些发现为优化高效储氢材料的设计提供了重要的基础数据。

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引用次数: 0

Synthesis of fluorescent graphene quantum dots from tender coconut water 用嫩椰子水合成荧光石墨烯量子点

IF 5.1 3区材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS

Diamond and Related Materials

Pub Date : 2026-01-17 DOI: 10.1016/j.diamond.2026.113346

Jitha S. Jayan , Sajitha S. Jayan , Appukuttan Saritha

The size-dependent optical properties, high surface area, tunable surface chemistry, and favourable electrical conductivity of graphene quantum dots (GQDs) make them highly promising for use in optoelectronics and energy storage. GQDs synthesized in powder form can facilitate storage, transport, and integration into devices for sensing, electronics, bioimaging, and supercapacitors. In the current study GQDs with an average size of 6.46 nm are prepared from tender coconut water in the powder form. The graphitic nature and the surface functionalities in the synthesized GQDs were confirmed by the help of FTIR, Raman, XRD and XPS analysis. The powder GQDs are capable of dispersing in water and shows photoluminescence characteristics with a quantum yield of 19.3%. The synthesized GQDs show better electrical conductivities over Graphene Oxide (GO) and better charge transfer performance as evident from the electrochemical studies. Moreover, the synthesized GQDs shows better thermal stability over GO synthesized via Hummer's method. The cyclic voltammetry studies (CV) reveal that GQDs shows a specific capacitance of 10.6 F g⁻¹, which is 27.4 time higher than that of GO.

石墨烯量子点（GQDs）具有尺寸相关的光学特性、高表面积、可调的表面化学性质和良好的导电性，使其在光电子学和储能方面具有很高的应用前景。以粉末形式合成的GQDs可以促进存储，运输和集成到传感，电子，生物成像和超级电容器的设备中。在目前的研究中，GQDs的平均尺寸为6.46 nm，由嫩椰子水制成粉末状。利用红外光谱（FTIR）、拉曼光谱（Raman）、x射线衍射（XRD）和XPS等分析手段对合成的GQDs的石墨性质和表面官能团进行了表征。粉末GQDs在水中具有良好的分散性能，并表现出光致发光特性，量子产率为19.3%。电化学研究表明，合成的GQDs比氧化石墨烯（GO）具有更好的导电性和更好的电荷转移性能。此外，合成的GQDs比通过Hummer方法合成的氧化石墨烯具有更好的热稳定性。循环伏安研究（CV）表明，GQDs的比电容为10.6 F g−1，是GO的27.4倍。

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引用次数: 0

Sustainable seaweed-derived nitrogen-doped porous carbon cathodes with redox-active electrolytes for high-performance zinc-ion hybrid supercapacitors 具有氧化还原活性电解质的海藻衍生氮掺杂多孔碳阴极用于高性能锌离子混合超级电容器

IF 5.1 3区材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS

Diamond and Related Materials

Pub Date : 2026-01-16 DOI: 10.1016/j.diamond.2026.113342

Priyadarshini Venkatachalam , Nagaraj Murugan , D.S. Aditya , Karmegam Dhanabalan , Mani Arivazhagan , Jaroon Jakmunee , Sethumathavan Vadivel , S.K. Nataraj , Yoong Ahm Kim

Rechargeable zinc-ion hybrid supercapacitors (ZHSCs) are a promising next-generation energy storage technology due to their low cost, high energy density, safety, and cycle durability. However, their practical applications are hindered by low energy density, primarily governed by the properties of the cathode materials and electrolytes. Here, we report a sustainable strategy to prepare seaweed-derived nitrogen-doped porous carbon nanosheets (SNPCNs) as high-performance cathodes. Nitrogen doping creates abundant electroactive sites, improves electrolyte wettability, and accelerates Faradaic reactions. In addition, introducing a small amount of redox additive (0.05 M ZnI₂) into the aqueous ZnSO₄ electrolyte significantly boosts charge storage via additional redox reactions. Benefiting from this synergistic electrode and electrolyte design, the Zn//3 M ZnSO₄ + 0.05 M ZnI₂//SNPCN cell achieves a high specific capacitance of 340 F g⁻¹ at 0.1 A g⁻¹, with energy densities of 109.48 Wh kg⁻¹. The device also shows excellent cycling stability, retaining 75% capacitance after 1500 cycles. A practical four-cell, 6.4 V device successfully powered multiple LEDs for over 42 min, demonstrating strong energy delivery. This work provides a green, cost-effective route to heteroatom-doped porous carbon for advanced, sustainable zinc-ion energy storage systems.

可充电锌离子混合超级电容器（ZHSCs）具有低成本、高能量密度、安全性和循环耐久性等优点，是一种很有前途的新一代储能技术。然而，它们的实际应用受到低能量密度的阻碍，主要是由正极材料和电解质的性质决定的。在这里，我们报告了一种可持续的策略来制备海藻衍生的氮掺杂多孔碳纳米片（SNPCNs）作为高性能阴极。氮掺杂产生了丰富的电活性位点，提高了电解质的润湿性，加速了法拉第反应。此外，在硫酸锌水溶液中加入少量氧化还原添加剂（0.05 M ZnI 2）可通过附加氧化还原反应显著提高电荷的存储能力。得益于这种协同电极和电解质设计，Zn//3 M ZnSO₄+ 0.05 M ZnI₂//SNPCN电池在0.1 a g−1时获得了340 F g−1的高比电容，能量密度为109.48 Wh kg−1。该器件还具有优异的循环稳定性，在1500次循环后保持75%的电容。一个实用的四电池，6.4 V器件成功地为多个led供电超过42分钟，展示了强大的能量输送。这项工作为先进的、可持续的锌离子储能系统提供了一种绿色、经济的杂原子掺杂多孔碳途径。

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引用次数: 0

The effect of adding single-walled carbon nanotubes on the functional characteristics of drilling fluids with different hydrocarbon phase contents 添加单壁碳纳米管对不同烃相含量钻井液功能特性的影响

IF 5.1 3区材料科学 Q2 MATERIALS SCIENCE, COATINGS & FILMS

Diamond and Related Materials

Pub Date : 2026-01-16 DOI: 10.1016/j.diamond.2026.113344

A.V. Minakov , A.D. Skorobogatova , E.I. Lysakova , S.D. Kazanina , M.I. Pryazhnikov

Improving the properties of drilling fluids is the most important step to upgrade the performance of drilling wells. One of the ways to further enhance the characteristics of drilling fluids is the use of nanomaterial additives. This paper presents the results of a comprehensive experimental study on the effect of additives of single-walled carbon nanotubes (SWCNT) on the main functional characteristics of hydrocarbon-based drilling fluids. The influence of the hydrocarbon phase content (from 50 to 80 vol%) on the properties of drilling fluids modified with 0.1 wt% single-walled carbon nanotubes has been examined for the first time. The influence of the SWCNT additive on the effective viscosity, rheology and microrheology, thixotropic and creep recovery, oscillatory viscoelastic properties, aging and colloidal stability, filtration losses, coefficient of friction of drilling fluids has been studied. The research results have shown that the addition of SWCNT may significantly enhance key functional characteristics such as gel strength and colloidal stability of drilling fluids in a wide range of varying concentrations of the hydrocarbon phase. This makes single-walled carbon nanotubes a universal tool for controlling the functional properties of various hydrocarbon drilling fluids in various operating conditions. This improvement is attributed to the formation of a bulk elastic network, as quantitatively demonstrated by enhanced rheological moduli and stability.

改善钻井液的性能是提高钻井性能的最重要的一步。进一步提高钻井液性能的方法之一是使用纳米材料添加剂。本文介绍了单壁碳纳米管（SWCNT）添加剂对烃基钻井液主要功能特性影响的综合实验研究结果。首次研究了碳氢相含量（50 ~ 80 vol%）对0.1 wt%单壁碳纳米管改性钻井液性能的影响。研究了swcnts添加剂对钻井液有效粘度、流变学和微流变学、触变和蠕变恢复、振荡粘弹性、老化和胶体稳定性、滤失量、摩擦系数的影响。研究结果表明，swcnts的加入可以显著提高钻井液在不同烃相浓度范围内的凝胶强度和胶体稳定性等关键功能特性。这使得单壁碳纳米管成为在各种作业条件下控制各种碳氢化合物钻井液功能特性的通用工具。这种改进是由于形成了一个整体弹性网络，正如增强的流变模量和稳定性所定量证明的那样。

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引用次数: 0