Diamond and Related Materials最新文献_第6页

Study on surface modification of boron-doped diamond electrodes and their electrochemical oxidation performance 掺硼金刚石电极表面改性及其电化学氧化性能的研究

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

Diamond and Related Materials

Pub Date : 2026-01-28 DOI: 10.1016/j.diamond.2026.113378

Yangyang Yang , Ying Ren , Weichun He , Yikang Ma , Qianqian Chen , Lizhen Wei , Zelin Wang , Bing Xue , Huichao Zheng , Zhengxin Li

In response to environmental pollution caused by organic contaminants, the use of boron-doped diamond (BDD) electrodes for the electrolytic removal of organic pollutants has emerged as a significant research strategy in recent years. However, conventional planar BDD electrodes suffer from limitations in mass transfer efficiency and electrochemical active surface area, which adversely affect their degradation performance. In this study, BDD electrodes were fabricated using MPCVD technology. These electrodes were then subjected to surface modification via various methods, resulting in a series of modified BDD electrodes. The morphology and structure characteristics of the electrodes were analyzed using scanning electron microscopy (SEM), X-ray diffraction (XRD), and Raman spectroscopy. Their electrochemical performance and efficiency in degrading tetracycline contaminants were evaluated by an electrochemical workstation and ultraviolet-visible (UV–Vis) spectrophotometer. The results indicated that surface modification significantly altered the electrode morphology. Electrochemical analysis revealed that the active area of the electrodes increased by 1.94-fold and 2.90-fold, respectively, after hydrogen etching via MPCVD and dielectric barrier discharge (DBD) treatment. After 120 min of degradation testing, the DBD-treated BDD electrode demonstrated the highest organic pollutant removal rate (85.4%) and the greatest apparent reaction rate constant (0.0155 min⁻¹) among all tested electrodes.

针对有机污染物造成的环境污染，利用掺硼金刚石（BDD）电极电解去除有机污染物已成为近年来一项重要的研究策略。然而，传统的平面BDD电极在传质效率和电化学活性表面积方面存在局限性，这对其降解性能产生了不利影响。本研究采用MPCVD技术制备BDD电极。然后通过各种方法对这些电极进行表面修饰，从而得到一系列修饰的BDD电极。利用扫描电子显微镜（SEM）、x射线衍射仪（XRD）和拉曼光谱分析了电极的形貌和结构特征。采用电化学工作站和紫外-可见分光光度计对其电化学性能和降解四环素类污染物的效率进行了评价。结果表明，表面修饰显著改变了电极的形貌。电化学分析表明，经MPCVD和介质阻挡放电（DBD）处理后，电极的活性面积分别增加了1.94倍和2.90倍。经过120 min的降解测试，经dbd处理的BDD电极有机污染物去除率最高（85.4%），表观反应速率常数最大（0.0155 min−1）。

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引用次数: 0

Superoxide ion (O2−) adsorption on C20 fullerene: A DFT study for antioxidant material design 超氧离子（O2−）在C20富勒烯上的吸附：抗氧化材料设计的DFT研究

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

Diamond and Related Materials

Pub Date : 2026-01-28 DOI: 10.1016/j.diamond.2026.113372

Gabriel García-Laiton , Alejandro B.D. Mora-González , Alexia K. Magadán-Cuatlayol , Fernando A. Zubieta López , Ernesto Chigo-Anota

Oxidative stress drives the search for advanced antioxidant nanomaterials. This study evaluates the smallest fullerene, C₂₀, as an efficient scavenger of the superoxide radical (O₂⁻). Density Functional Theory (DFT) calculations, including implicit solvation effects, reveal that the Jahn-Teller instability of C₂₀ creates a highly reactive surface with localized electrophilic sites that facilitate radical neutralization. O₂⁻ adsorbs on the C₂₀ surface through covalent chemisorption and charge-transfer physisorption, which are thermodynamically spontaneous in gas and aqueous phases. These interactions reduce the system's electrophilicity by approximately 99% of pristine C₂₀ and result in electronically stabilized complexes. Topological analyses indicate shared-shell characteristics consistent with a chemical adsorption pathway. Time-dependent DFT predicts visible/NIR charge-transfer signatures for the physisorbed complexes, opening possibilities for non-invasive radical sensing. Although solvation decreases the adsorption energies, the process remains spontaneous in water, supporting the biological feasibility of C₂₀ as a next-generation antioxidant and biosensing platform.

氧化应激促使人们寻找先进的抗氧化纳米材料。本研究评价了最小的富勒烯C20作为超氧自由基（O2−）的有效清除剂。密度泛函理论（DFT）计算，包括隐式溶剂化效应，揭示了C20的Jahn-Teller不稳定性产生了一个具有局部亲电位点的高活性表面，有利于自由基中和。O2−通过共价化学吸附和电荷转移物理吸附在C20表面，这两种吸附在气相和水相中都是热力学自发的。这些相互作用使体系的亲电性降低了约99%的原始C20，并产生了电子稳定的配合物。拓扑分析表明，共享壳特征符合化学吸附途径。时变DFT预测了物理吸附复合物的可见/近红外电荷转移特征，为非侵入性自由基传感开辟了可能性。尽管溶剂化降低了吸附能，但该过程在水中仍然是自发的，这支持了C20作为下一代抗氧化剂和生物传感平台的生物学可行性。

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引用次数: 0

Simulation of heterogeneous nucleation and growth of diamond nanocrystals on inhomogeneous substrate 金刚石纳米晶在非均匀基底上非均相成核和生长的模拟

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

Diamond and Related Materials

Pub Date : 2026-01-28 DOI: 10.1016/j.diamond.2026.113374

P.E. L'vov , S.V. Bulyarskiy , A.A. Pavlov , Yu.V. Anufriev , V.V. Sen' , E.M. Eganova , E.A. Pershina

In this study, we develop a phenomenological phase field model for the heterogeneous nucleation and growth of diamond nanocrystals on an inhomogeneous substrate surface. Heterogeneity of the substrate surface after the seeding stage is demonstrated in our experiment on plasma-enhanced chemical vapor deposition of diamond. It has been shown that the seeding process enables the formation of a thin nanocrystalline layer of intermediate carbon phase, having a higher value of interplanar distance (2.52 Å) than diamond and presiding diamond crystal nucleation. The model accounts for surface energy anisotropy and random orientation of diamond nanocrystals introduced in terms of the quaternion formalism of the rotation operator. The substrate heterogeneity is introduced using non-uniform boundary conditions for the quaternion field. We simulate the dynamics of formation and growth of randomly oriented diamond nanocrystals corresponding to the cubic system. It is demonstrated that nucleation for some orientations cannot occur, which can be explained by the higher value of the nucleation barrier. The change in crystal misorientation affects the crystal growth dynamics and influences the overall coverage, number density, average size, nucleation rate, incubation time, and size distribution function of nanocrystals. The film morphology obtained in the performed simulation agrees qualitatively with our experiment. The model and applied phenomenological parameters reproduce typical film growth rates, as well as size and number density obtained in other studies for the early stage of diamond film formation.

在这项研究中，我们建立了一个现象相场模型，用于研究金刚石纳米晶体在非均匀基底表面上的非均匀成核和生长。在我们的等离子体增强化学气相沉积金刚石实验中，证明了播种阶段后衬底表面的非均匀性。结果表明，播种过程可以形成一层较薄的中间碳相纳米晶层，其面间距值（2.52 Å）比金刚石高，有利于金刚石晶体成核。该模型用旋转算子的四元数形式描述了金刚石纳米晶体的表面能各向异性和随机取向。利用四元数场的非均匀边界条件引入了基底的非均匀性。我们模拟了与立方体系相对应的随机取向金刚石纳米晶体的形成和生长动力学。结果表明，某些取向不能成核，这可以用较高的成核势垒来解释。晶体取向偏差的变化会影响晶体的生长动力学，影响纳米晶体的总体覆盖率、数量密度、平均尺寸、成核速率、孵育时间和尺寸分布函数。模拟得到的膜形态与实验结果基本一致。模型和应用的现象学参数再现了典型的薄膜生长速率，以及其他研究中获得的金刚石薄膜形成早期的尺寸和数量密度。

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引用次数: 0

Plasma-synthesized graphene oxide quantum dots: Structure, thermal relaxation, and coupled magnetocaloric effect 等离子体合成氧化石墨烯量子点：结构、热松弛和耦合磁热效应

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

Diamond and Related Materials

Pub Date : 2026-01-27 DOI: 10.1016/j.diamond.2026.113375

Nikolay Sirotkin , Olga Balmasova , Alexey Dyshin , Anatoly Sarapulov , Ruslan Kryukov , Alena Shkapina , Viktor Korolev

Graphene oxide quantum dots (GOQDs) represent a promising class of carbon nanomaterials with exceptional optical, electronic, and biocompatible properties. This study presents a novel, environmentally friendly synthesis of GOQDs using pulsed underwater discharge plasma, enabling the production of highly functionalized quantum dots without additional chemical precursors. The synthesized GOQDs were comprehensively characterized using a suite of physicochemical techniques, including X-ray diffraction (XRD), Fourier-transform infrared (FTIR) spectroscopy, Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), UV–visible absorption, photoluminescence spectroscopy, thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC). Structural analyses confirmed the formation of nanocrystalline, defect-rich particles with an average size of 2–8 nm, featuring a high density of oxygen-containing functional groups predominantly located at edges and defect sites. Optical studies revealed an absorption band at approximately 240 nm, a calculated optical band gap of 2.4 eV, and green-yellow photoluminescence centered at 565 nm, attributed to the synergistic effects of defect-state emission and quantum confinement. Thermal analysis identified distinct, reproducible heat capacity peaks at approximately 41.5 °C, 55.3 °C, and 59.6 °C, which correlate with in situ Raman spectral evolution and are interpreted as configurational relaxations and defect annealing within the metastable carbon lattice. Furthermore, the magnetocaloric effect (MCE) and entropy changes (ΔS) were investigated under external magnetic fields ranging from 0.2 to 1.0 T. The observed maxima in MCE and ΔS curves coincide with the thermal anomalies in heat capacity, demonstrating a strong coupling between structural rearrangements and magnetic entropy.

氧化石墨烯量子点（GOQDs）具有优异的光学、电子和生物相容性，是一种很有前途的碳纳米材料。本研究提出了一种新颖、环保的利用脉冲水下放电等离子体合成GOQDs的方法，使高功能化量子点的生产无需额外的化学前体。利用x射线衍射（XRD）、傅里叶变换红外（FTIR）光谱、拉曼光谱、x射线光电子能谱（XPS）、透射电子显微镜（TEM）、紫外可见吸收光谱、光致发光光谱、热重分析（TGA）和差示扫描量热法（DSC）等一系列物理化学技术对合成的GOQDs进行了全面表征。结构分析证实形成了纳米晶，平均尺寸为2-8 nm，具有高密度的含氧官能团，主要位于边缘和缺陷位置。光学研究表明，由于缺陷态发射和量子约束的协同作用，该材料具有约240 nm的吸收带，2.4 eV的光学带隙，以及以565 nm为中心的黄绿色光致发光。热分析发现，在大约41.5°C、55.3°C和59.6°C处，热容峰值明显，可重复，这与原位拉曼光谱演化有关，并被解释为亚稳碳晶格内的构型弛豫和缺陷退火。此外，在0.2 ~ 1.0 t的外加磁场范围内，研究了磁热效应（MCE）和熵变化（ΔS）。MCE和ΔS曲线的最大值与热容的热异常相吻合，表明结构重排和磁熵之间存在强耦合。

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引用次数: 0

Engineering nitrogen vacancies in g-C₃N₄ through post-heat treatment for enhanced photocatalytic H₂O₂ evolution 通过后热处理在g-C₃N₄中制造氮空位，以增强光催化H₂O₂的析出

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

Diamond and Related Materials

Pub Date : 2026-01-27 DOI: 10.1016/j.diamond.2026.113368

Ali Alsalme

Visible-light-driven photocatalytic H₂O₂ production is one of the most promising approaches for generating sustainable solar fuel through the two-electron reduction of molecular oxygen. In this work, a simple post-synthesis heat treatment method was employed to prepare defective carbon nitride (g-C₃N₄) with enhanced photocatalytic activity. High-temperature treatment at 550 °C and 600 °C facilitates the formation of sp²-hybridized nitrogen vacancies within the g-C₃N₄ framework. The sample treated at 550 °C exhibited improved photocatalytic efficiency due to enhanced visible-light absorption. In contrast, the 600 °C-treated sample introduced intermediate energy levels within the bandgap, which promoted both visible-light absorption and efficient charge carrier separation during H₂O₂ production. Analytical studies further revealed that the presence of nitrogen vacancies in the g-C₃N₄ system significantly enhances the overall electron reduction process, leading to improved photocatalytic H₂O₂ evolution.

可见光驱动的光催化H₂O₂生产是通过分子氧的双电子还原产生可持续太阳能燃料的最有前途的方法之一。本文采用简单的合成后热处理方法制备了光催化活性增强的缺陷氮化碳（g-C₃N₄）。550°C和600°C的高温处理有助于在g-C₃N₄框架内形成sp2杂化氮空位。在550°C下处理的样品由于可见光吸收增强而表现出更高的光催化效率。相比之下，600°c处理的样品在带隙内引入了中间能级，这促进了可见光吸收和H₂O₂生产过程中有效的载流子分离。分析研究进一步表明，g-C₃N₄体系中氮空位的存在显著增强了整个电子还原过程，从而改善了光催化H₂O₂的演化。

引用次数: 0

Boron-doped g-C₃N₄ catalysts for solar-driven Hydrogen production: Experimental and DFT insights 用于太阳能制氢的硼掺杂g-C₃N₄催化剂：实验和DFT见解

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

Diamond and Related Materials

Pub Date : 2026-01-26 DOI: 10.1016/j.diamond.2026.113371

Kanchan Pawar , Oshnik Maurya , Subhendu Mishra , Arpan Chakraborty , Niteen S. Jawale , Sudhir S. Arbuj , Abhishek K. Singh , Bhavesh Sinha , Archana Kalekar

Hydrogen is a key clean energy carrier for global sustainability, and solar-driven water-splitting technologies playing a crucial role in producing hydrogen efficiently and reducing dependence on fossil fuels. Graphitic carbon nitride (g-C₃N₄, GCN) catalyst is highly promising for photocatalytic applications due to its visible-light activity, cost-effectiveness, narrow bandgap, non-toxicity, stability, and ease of synthesis. This study focuses on the synthesis of GCN through thermal polymerization, and further explores the effect of boron doping (BCN) on the electronic, optical, and catalytic properties of the resulting material. Photoelectrocatalytic (PEC) measurements show improved photocurrent density, while photocatalytic (PC) measurements show evolution of 518 μmol H₂ per 0.1 g of BCN, which was 1.64 times higher than pristine GCN. Additionally, DFT was done to understand that low B doping concentration is optimum for H₂ evolution, while B substitution of N sites takes place in BCN. Thus, boron doping improves charge separation and enhances light absorption, required for improved PEC/PC performances. These findings, highlight that boron-doped GCN is a viable and cost-effective photocatalyst for solar-driven hydrogen production.

氢是全球可持续发展的关键清洁能源载体，太阳能驱动的水分解技术在高效生产氢和减少对化石燃料的依赖方面发挥着至关重要的作用。石墨化氮化碳（g-C₃N₄，GCN）催化剂具有可见光活性、低成本、窄带隙、无毒、稳定性好、易于合成等优点，在光催化领域具有广阔的应用前景。本研究重点研究了热聚合法制备GCN，并进一步探讨了硼掺杂（BCN）对所得材料的电子、光学和催化性能的影响。光电催化（PEC）测量结果表明光电流密度有所提高，而光催化（PC）测量结果表明每0.1 g BCN的光电流密度为518 μmol H 2，是原始GCN的1.64倍。此外，DFT还发现低B掺杂浓度最有利于H2的演化，而B取代N位点则发生在BCN中。因此，硼掺杂改善了电荷分离，增强了光吸收，这是改善PEC/PC性能所必需的。这些发现突出表明，硼掺杂GCN是一种可行且具有成本效益的太阳能驱动制氢光催化剂。

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引用次数: 0

Iron and cobalt co-doped ZnO nanoparticles grafted over CNTs: An efficient electrochemical probe for the detection of paracetamol 碳纳米管接枝铁钴共掺杂ZnO纳米粒子：一种检测扑热息痛的高效电化学探针

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

Diamond and Related Materials

Pub Date : 2026-01-26 DOI: 10.1016/j.diamond.2026.113367

Sajid Ali Madni , Abid Ali , Murat Kaleli , Salih Akyürekli , Mashael M. Alharbi , Nadiah Al-Mutlaq , Imene Bayach , Amel Y. Ahmed

Acetaminophen (paracetamol), a widely used analgesic and antipyretic, requires precise and sensitive detection for pharmaceutical and clinical applications. Iron and Cobalt (Fe/Co) co-doped ZnO@CNTs nanocomposites, synthesized via a precipitation method has been developed for the electrochemical detection of acetaminophen. These nanocomposites were doped with equimolar amount of Fe/Co with the concentrations of 1%, 5%, and 10% to optimize the electrocatalytic performance of nanocomposites (ZnO@CNTs). Characterization using Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM) Energy-Dispersive X-ray Spectroscopy (EDX), and X-ray Diffraction (XRD) and Raman spectroscopy confirmed the successful metallic doping and uniform dispersion within the composite matrix. While, electrochemical studies, including cyclic voltammetry (CV), scan rate analysis, and chronoamperometry, revealed that the 1% doped concentration achieved the lowest limit of detection (LOD), significantly enhancing electron transfer kinetics and sensitivity for acetaminophen detection. 1% Fe/Co doped ZnO@CNT showed lowest LOD of 0.045 μM with high sensitivity of 1.862 μA mM⁻¹ cm⁻². The Fe/Co-doped ZnO@CNTs nanocomposites demonstrated outstanding sensitivity, stability, and reproducibility, underscoring their potential for practical acetaminophen analysis.

对乙酰氨基酚（paracetamol）是一种广泛应用的镇痛解热药，在制药和临床应用中需要精确、灵敏的检测方法。采用沉淀法合成了铁和钴（Fe/Co）共掺杂ZnO@CNTs纳米复合材料，用于对乙酰氨基酚的电化学检测。这些纳米复合材料分别以1%、5%和10%的浓度掺杂等摩尔量的Fe/Co以优化纳米复合材料的电催化性能（ZnO@CNTs）。利用扫描电子显微镜（SEM）、透射电子显微镜（TEM）、能量色散x射线能谱（EDX）、x射线衍射（XRD）和拉曼光谱进行表征，证实了金属在复合基体内的成功掺杂和均匀分散。而电化学研究，包括循环伏安法（CV）、扫描速率分析和计时安培法，表明1%的掺杂浓度达到了最低检测限（LOD），显著提高了对乙酰氨基酚检测的电子转移动力学和灵敏度。掺1% Fe/Co ZnO@CNT的最低LOD为0.045 μM，灵敏度为1.862 μA mM−1 cm−2。Fe/ co掺杂ZnO@CNTs纳米复合材料表现出出色的灵敏度、稳定性和可重复性，强调了它们在实际对乙酰氨基酚分析中的潜力。

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引用次数: 0

A novel fabrication method of small arc-shaped CVD diamond roller wheel using mechanical grinding truing and femtosecond laser sharpening 提出了一种利用机械磨铣和飞秒激光锐化加工小圆弧型CVD金刚石滚轮的新方法

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

Diamond and Related Materials

Pub Date : 2026-01-26 DOI: 10.1016/j.diamond.2026.113369

Longzhou Dai , Zhengchao wan , Mingjun Zhang , Genyu Chen , Cong Mao , Yuanqiang Luo , Weidong Tang , Bo Cheng

The small arc-shaped CVD diamond roller wheel has broad application prospects in the preparation of micro-structured cutting tools. However, CVD diamond material has good wear resistance, which makes it extremely difficult to dress its small arc-shaped profile. In this work, the oblique line interpolation tangential envelope method is proposed to dress the small arc-shaped CVD diamond roller wheel. This method utilizes the squeezing contact points of two rotating wheels on the dressing path to form the required small arc-shaped profile. This can simultaneously avoid uneven loss of the tool wheel and interference with the installation accuracy of the machine tool, improving the dressing precision of arc-shaped profile. The profile errors caused by different machine tool motion axis are analyzed. The corresponding profile error prediction models have been established. In order to improve the truing accuracy of CVD diamond roller wheel, a segmented arc compensation method is proposed. Finally, femtosecond laser processing technology is used to achieve sharpening of CVD diamond roller wheel. The abrasive particles have a suitable blade height to facilitate the excellent grinding performance of the roller wheel.

小圆弧型CVD金刚石滚轮在微结构刀具的制备中具有广阔的应用前景。然而，CVD金刚石材料具有良好的耐磨性，这使得其小弧形轮廓极难修饰。本文提出了斜插补切包络法对小圆弧型CVD金刚石滚轮进行修整。该方法利用修整路径上两个转轮的挤压接触点形成所需的小弧形轮廓。这样可以同时避免砂轮的不均匀损耗和对机床安装精度的干扰，提高弧形轮廓的修整精度。分析了不同机床运动轴引起的轮廓误差。建立了相应的剖面误差预测模型。为了提高CVD金刚石滚轮的加工精度，提出了一种分段电弧补偿方法。最后，利用飞秒激光加工技术实现了CVD金刚石滚轮的锐化。磨料颗粒具有合适的刃高，有利于滚轮的优异磨削性能。

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引用次数: 0

MWCNT template-assisted synthesis of porous carbon nanofibers derived from Pandanus tectorius biomass for enhanced supercapacitor performance MWCNT模板辅助合成从蛤壳生物量中提取的多孔碳纳米纤维以增强超级电容器性能

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

Diamond and Related Materials

Pub Date : 2026-01-26 DOI: 10.1016/j.diamond.2026.113370

Rakhmawati Farma , Irma Apriyani , Regi Suganda , Awitdrus Awitdrus , Nidya Chitraningrum , Ari Sulistyo Rini , Luqyana Adha Azwat , Apriwandi Apriwandi , Azriyenni Azhari Zakri

Carbon nanofibers (CNFs) were successfully synthesized from Pandanus tectorius (PL) leaf waste via chemical activation with KOH, using a Multi-Walled Carbon Nanotube (MWCNT) template. This study systematically investigated the effect of CNT addition on the morphological structure and electrochemical performance of CNF-PL. Characterization results showed that increasing the MWCNT content increased the specific surface area from 528 m²/g to 632 m²/g and the oxygen content from 5.29% to 16.25%. Furthermore, the presence of OH, CO, CO, and CC functional groups improved the wettability and conductivity of the CNF-PL material. The CNF-PL cell exhibited the highest specific capacitance of 369.77 F/g at 1 mV/s in a 1 M H2SO4 electrolyte, with energy and power densities of 51.36 Wh/kg and 327.33 W/kg, respectively. These findings demonstrate the high potential of biomass waste-based carbon nanofibers as green electrodes for renewable and sustainable energy conversion and storage.

采用多壁碳纳米管（MWCNT）模板，利用KOH化学活化法，成功地合成了以白芋叶（Pandanus tectorius， PL）为原料的碳纳米纤维。本研究系统地研究了碳纳米管的加入对CNF-PL的形态结构和电化学性能的影响。表征结果表明，随着MWCNT含量的增加，比表面积从528 m2/g增加到632 m2/g，氧含量从5.29%增加到16.25%。此外，OH、CO、CO和CC官能团的存在改善了CNF-PL材料的润湿性和导电性。在1 M H2SO4电解液中，CNF-PL电池在1 mV/s下的比电容最高为369.77 F/g，能量和功率密度分别为51.36 Wh/kg和327.33 W/kg。这些发现表明，基于生物质废弃物的碳纳米纤维作为可再生和可持续能源转换和储存的绿色电极具有很高的潜力。

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引用次数: 0

Facile synthesis of mesoporous ZnCo2O4 anchored on coffee ground/orange peel-derived carbon as an advanced electrode for energy storage 介孔ZnCo2O4锚定在咖啡渣/橘子皮衍生碳上的简单合成作为一种先进的储能电极

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

Diamond and Related Materials

Pub Date : 2026-01-24 DOI: 10.1016/j.diamond.2026.113363

Yu-Cheng Chang, Shao-Ru Chang

The escalating global energy demand and the intermittency of renewable energy sources necessitate the urgent development of sustainable, high-performance energy storage systems, such as supercapacitors. This study aims to engineer a novel hybrid electrode by integrating a redox-active bimetallic oxide with a sustainable biomass-derived carbon scaffold to overcome the energy density limitations of conventional carbon materials. A green and cost-effective strategy was developed to synthesize a CGOP@ZnCo₂O₄ composite by coupling coffee ground/orange peel-derived carbon (CGOP) with ZnCo₂O₄ nanostructures via a wet-chemical route and thermal annealing. The biocarbon framework, derived from sustainable biomass, provides a highly conductive network and an abundance of oxygen- and nitrogen-containing functional groups that facilitate uniform growth and strong interfacial bonding of ZnCo₂O₄. Systematic optimization of the annealing temperature and precursor ratios revealed that the composite prepared at 450 °C with 0.134 mmol Zn(NO₃)₂ and 1.33 mmol Co(NO₃)₂ exhibited a hierarchically porous and well-crystallized architecture. This structural synergy between mesoporous biocarbon and crystalline ZnCo₂O₄ enables rapid ion diffusion and efficient charge transport, resulting in an outstanding specific capacitance of 556.1 F/g at 1 A/g and excellent cycling stability, with 81.1% retention after 5000 cycles. Furthermore, the reduced charge-transfer resistance and pseudocapacitive behavior confirm the improved electrochemical kinetics of the optimized composite. This work demonstrates an environmentally benign route for constructing a high-performance ZnCo₂O₄-based electrode through effective biocarbon coupling, offering a promising pathway for sustainable and scalable energy storage applications.

不断增长的全球能源需求和可再生能源的间歇性，迫切需要开发可持续的高性能储能系统，如超级电容器。本研究旨在通过整合氧化还原活性双金属氧化物和可持续的生物质衍生碳支架来设计一种新型混合电极，以克服传统碳材料的能量密度限制。采用湿化学和热退火的方法，将咖啡渣/橘子皮衍生碳（CGOP）与ZnCo2O4纳米结构偶联，制备了一种绿色、经济的CGOP@ZnCo2O4复合材料。来源于可持续生物质的生物碳框架提供了高导电性网络和丰富的含氧和含氮官能团，促进了ZnCo2O4的均匀生长和强界面键合。系统优化退火温度和前驱体配比后发现，在450°C下制备的复合材料具有0.134 mmol Zn(NO3)2和1.33 mmol Co(NO3)2，具有分层多孔和良好结晶结构。这种介孔生物碳和晶体ZnCo2O4之间的结构协同作用使离子快速扩散和有效的电荷传输成为可能，从而产生出色的比电容，在1 A/g时达到556.1 F/g，并且具有出色的循环稳定性，在5000次循环后保持81.1%的保留率。此外，电荷转移电阻和赝电容行为的降低证实了优化后的复合材料的电化学动力学得到改善。这项工作展示了一种通过有效的生物碳偶联构建高性能znco2o4基电极的环保途径，为可持续和可扩展的储能应用提供了一条有前途的途径。

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引用次数: 0