Diamond and Related Materials最新文献

{"title":"Structural and morphological evolution of ZnO nanostructures promoted by porous SWCNT and highlighting its field emission property","authors":"Chandrasekar Perumalveeramalai ,&nbsp;Sreenivasulu Kummari V ,&nbsp;Thanikaikarasan Sethuramachandran","doi":"10.1016/j.diamond.2025.112221","DOIUrl":"10.1016/j.diamond.2025.112221","url":null,"abstract":"<div><div>Carbon nanotubes (SWCNT) have been regarded as one of the ideal substrates for making functional nano- and micro-structures. Zinc oxide nanostructures were grown on porous carbon nanotube substrates selectively via molecular beam epitaxy using solid zinc metal source and molecular oxygen without using any metal catalyst. It is found that the growth of ZnO nanowires on CNT follows the Vapour-Solid (VS) mechanism. ZnO nanowires in the heterostructures have a perfect crystalline structure, while the crystalline structures of the CNTs remain unchanged. The ZnO nanowires that were synthesized demonstrated favorable crystalline and optical characteristics. The field emission properties of as-prepared ZnO/p-SWCNT nanohybrid structures were analyzed in the diode configuration and results indicate that ZnO/p-SWCNT shows the excellent field emission characteristics with low turn-on field of 0.75 <em>V</em>/μm which is comparatively lower than pristine p-SWCNT~0.9 V/μm and pristine ZnO NRs ~1.2 V/μm. These findings demonstrate the viability of ZnO/p-SWCNT as the vacuum electronic applications.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"154 ","pages":"Article 112221"},"PeriodicalIF":4.3,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143680790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Polypyrrole-based carbon-coated SnO2/PCNF electrodes","authors":"Meltem Yanilmaz ,&nbsp;Aleyna Atik ,&nbsp;Lei Chen ,&nbsp;Xiangwu Zhang","doi":"10.1016/j.diamond.2025.112216","DOIUrl":"10.1016/j.diamond.2025.112216","url":null,"abstract":"<div><div>Tin oxide (SnO₂) shows great promise as an anode material due to its high capacity and ample supply. However, SnO₂ anodes face challenges including aggregation, low conductivity, and significant volume changes during cycling, which lead to powdering of active ingredients and breaking of the solid electrolyte interphase (SEI), ultimately impairing energy transfer and cycling stability. Carbon materials offer several advantages in this context, such as amorphous structures, large interlayer distances, high electrical conductivity, and excellent ion transport abilities. In addition, carbon can function as a buffer within the electrodes, suppressing volume fluctuations and preventing structural distortions (pulverization/agglomeration) caused by the volume change. They also alleviate side reactions at the interface by precluding direct contact between the active material and the electrolyte, thereby enhancing the electrochemical performance of batteries. A simple and rapid method was introduced to synthesize high-performance polyacrylonitrile-based, binder-free N-doped carbon-coated SnO₂/porous carbon nanofibers (PCNFs) using centrifugal spinning and polypyrrole (PPy)-based amorphous carbon coating and these were then used as anodes in lithium-ion and sodium-ion batteries for the first time. The resulting N-doped carbon-coated SnO₂ incorporated into porous carbon nanofibers (N-C@ SnO₂/PCNFs) exhibited a high initial discharge capacity of 1200 mAh g⁻¹ for lithium-ion batteries and 680 mAh g⁻¹ for sodium-ion batteries, as well as excellent durability during cycling even after 200 cycles. The 3D CNF matrix effectively buffered the volume changes and enhanced structural stability by suppressing particle aggregation during the charge/discharge process. Furthermore, the second carbon coating not only prevented direct contact between the active material and the electrolyte but also increased electronic conductivity. Results showed that PPy-based carbon coating is an effective strategy for synthesizing high-performance electrodes in energy storage systems.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"154 ","pages":"Article 112216"},"PeriodicalIF":4.3,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143680778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Stacking-faults consisting of rhombohedral stacking-order, hexagonal and one-dimensional moiré superlattices in exfoliated highly oriented pyrolytic graphite","authors":"Filippo S. Boi ,&nbsp;Li Lei ,&nbsp;Aiqun Gu ,&nbsp;Jian Guo ,&nbsp;Hansong Wu ,&nbsp;Shanling Wang","doi":"10.1016/j.diamond.2025.112212","DOIUrl":"10.1016/j.diamond.2025.112212","url":null,"abstract":"<div><div>Understanding the stabilization of rhombohedral stacking-order and moiré superlattices in structural defects produced by exfoliation is of importance towards applications in nanoscale low-dimensional systems and superconductivity. Here we report a statistical investigation of the stabilization-dynamics of rhombohedral ABC stacking-faults within locally-lifted sublattices, fabricated by exfoliation of highly oriented pyrolytic graphite (HOPG). Raman point/mapping spectroscopy applied to several tens of locally-lifted lattice-regions reveal a weak enhancement of the ratio of the integral area of the 2D band-components, namely within the frequency range from ∼2550 to 2670 cm⁻¹ (left shoulder) to that from ∼2670 to 2760 cm⁻¹ (right shoulder). A structural transition is demonstrated with HRTEM revealing the coexistence of hexagonal and one-dimensional moiré superlattices with periods D-1–2.04 nm, D-2–2.35 nm (coexisting superlattice-periodicities) and D ∼ 13 nm in the stacking-fault regions. Interestingly, selective area electron diffraction (SAED) of the latter revealed unusual doubled electron diffraction patterns. Stabilization of micron-scale stacking-faults of crystalline rhombohedral graphite (ABC stacking) was found as an additional transition, when applying the lifting approach to staircase-defects. Comparative investigations performed on commercially available grafoil revealed a different trend, with the presence of a disorder-rich rhombohedral graphitic phase compatible with a defective A|ABAB|BCBC|CACA|A stacking-sequence, analogous to that reported previously in other grafoil samples and in nitrates intercalated graphite.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"154 ","pages":"Article 112212"},"PeriodicalIF":4.3,"publicationDate":"2025-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143642931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Efficient RhB degradation and inactivation of S. aureus with molecular docking studies of PVP and GO assisted BaO nanorods","authors":"Hamza Aziz ,&nbsp;Muhammad Imran ,&nbsp;Ali Haider ,&nbsp;Anum Shahzadi ,&nbsp;Muhammad Mustajab ,&nbsp;Anwar Ul-Hamid ,&nbsp;Hameed Ullah ,&nbsp;Ayesha Hussain ,&nbsp;Hisham S.M. Abd-Rabboh ,&nbsp;Muhammad Ikram","doi":"10.1016/j.diamond.2025.112213","DOIUrl":"10.1016/j.diamond.2025.112213","url":null,"abstract":"<div><div>Coprecipitation method was used to synthesize BaO and (2 and 4 wt%) of GO/PVP doped BaO nanorods (NRs) as potential catalysts for wastewater treatment. This research aims to enhance porosity, and surface area through surface functionalized GO/PVP doped NRs for antimicrobial potential and degradation of rhodamine B (RhB). Efficient RhB degradation was observed in an acidic medium (95.52 %) using sodium borohydride (NaBH₄) in absence of light. The agar well diffusion method was used to investigate antimicrobial effectiveness by measuring inhibition zones at high (8.45 ± 0.04 mm) and low (7.05 ± 0.04 mm) concentrations. Molecular docking analysis was performed to establish a theoretical basis for bactericidal effects of BaO, PVP doped BaO, and GO/PVP doped BaO NRs against deoxyribonucleic acid (DNA) gyrase in <em>S. aureus</em>. Docking investigations demonstrate that these doped NRs showed the potential as inhibitors of DNA gyrase.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"154 ","pages":"Article 112213"},"PeriodicalIF":4.3,"publicationDate":"2025-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143680795","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Porous carbon nano-spheres derived from cellulose decorated by FeNi/NiFe2O4 particles as an outstanding microwave absorbent","authors":"Jian Luo,&nbsp;Jiahuan Zhu,&nbsp;Yongfeng Ji,&nbsp;Weihong Zhou","doi":"10.1016/j.diamond.2025.112215","DOIUrl":"10.1016/j.diamond.2025.112215","url":null,"abstract":"<div><div>Biomass-derived carbon materials have unique advantages in microwave absorption (MA) materials because of sustainable, low-cost and high dielectric loss. In this study, a new FeNi/NiFe₂O₄/porous carbon spheres (FNP) composite was synthesized by two steps: the first step is using microcrystalline cellulose and polyvinylpyrrolidone to prepare carbon spheres through a hydrothermal method, and the second step is decorating FeNi/NiFe₂O₄ particles onto the carbon spheres and making pores in carbon spheres through calcining at 800 °C. The FNP composite displays remarkable MA capabilities with a minimum reflection loss of −53.05 dB and an effective absorption bandwidth up to 5.37 GHz. Cole-Cole curves reveal that FeNi and NiFe₂O₄ particles contribute to interface polarization and magnetic loss, while the interconnected carbon spheres lead to conductive loss. Additionally, the C<img>N, C<img>O, C<img>O, and O-C=O bonds and defects of carbon spheres induce dipole polarization, further enhancing the MA properties of the FNP composites.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"154 ","pages":"Article 112215"},"PeriodicalIF":4.3,"publicationDate":"2025-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143680789","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hydrothermal sulfonation of palm kernel shells to produce a carbon-based solid acid catalyst for the glycerol etherification","authors":"Artit Ausavasukhi ,&nbsp;Tawan Sooknoi","doi":"10.1016/j.diamond.2025.112217","DOIUrl":"10.1016/j.diamond.2025.112217","url":null,"abstract":"<div><div>Carbon-based solid acid catalysts were successfully prepared by one-step hydrothermal sulfonation of palm kernel shells. Among the solid acids studied, the catalysts with acidity and hydrophobic/hydrophilic balance were found to be more selective and efficient catalytic systems for the conversion of glycerol to glycerol ethers. The stability of the carbon-based solid acid catalyst was confirmed by a regeneration test, which showed that no leaching of acid groups into solution occurs. In addition, the carbon-based solid acid catalyst prepared by one-step hydrothermal sulfonation at 160 °C exhibits good cyclability. The etherification of glycerol with tertiary butanol occurs in a truly heterogeneous process in the presence of such an acid carbon.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"154 ","pages":"Article 112217"},"PeriodicalIF":4.3,"publicationDate":"2025-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143642891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fermi level modulation for enhanced graphene-based ultra-sensitive gas detection","authors":"Ravi Ranjan Kumar,&nbsp;Deepak Punetha","doi":"10.1016/j.diamond.2025.112214","DOIUrl":"10.1016/j.diamond.2025.112214","url":null,"abstract":"<div><div>The optimization of Fermi level absorptance above the Dirac point in graphene is crucial for enhancing its gas sensing capabilities. Graphene's exceptional electrical and optical properties make it highly suitable for optoelectronics and sensing applications. This study examines the relationship between the Fermi level and graphene's optical absorptance, particularly at 0.2 eV, to maximize its interaction with electromagnetic radiation. Simulations were conducted across 0–5 THz frequencies, analyzing the impact of substrate thickness and Fermi energy. Results indicate that higher Fermi levels significantly enhance absorptance, with peak values of 0.99826 at 0.5 eV for a 39 μm substrate. Notably, at 0.2 eV, competitive absorptance is observed with a 29 μm substrate, highlighting its relevance for gas sensing. Further optimization explored the effects of rotation angle and unit cell width, revealing that a 55° rotation maximizes absorptance at 0.98384. Structural modifications also influence absorption across frequencies. This research establishes a framework for tuning graphene's absorptance at 0.2 eV, crucial for improving the sensitivity of gas sensors. The findings hold significance for developing advanced optoelectronic devices in environmental monitoring, healthcare, and industrial applications, where Fermi level tuning can enhance performance.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"154 ","pages":"Article 112214"},"PeriodicalIF":4.3,"publicationDate":"2025-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143642888","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Recent advances and challenges in tribology of diamond-like carbon films: A critical review","authors":"Yunhai Liu,&nbsp;Xinwei Li,&nbsp;Penghui Xu,&nbsp;Hu Zhang,&nbsp;Ligao Liu","doi":"10.1016/j.diamond.2025.112206","DOIUrl":"10.1016/j.diamond.2025.112206","url":null,"abstract":"<div><div>Friction consumes 33–50 % of global primary energy, causing about 80 % of mechanical fail. Therefore, reducing friction is vital for save energy and extending service life. Diamond-like carbon (DLC) films have broad industrial prospects due to their low friction coefficient and high wear resistance. This article discusses the state and challenges in tribology of DLC films, focusing on how their structure and external conditions affect tribological mechanisms. Firstly, the article discusses how deposition process affects the tribological properties. Subsequently, the influence of external factors on the tribological properties is discussed. Additionally, the article covers recent advances in molecular dynamics and first-principles calculations, crucial for understanding the micro and nanoscale tribological mechanisms. Finally, Summarizing current DLC film tribology research, the article outlines future research priorities and directions.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"154 ","pages":"Article 112206"},"PeriodicalIF":4.3,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143629558","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Surface engineered naturally derived antioxidant carbon dots and its light triggered nitric oxide release behavior","authors":"Mohd Afzal ,&nbsp;Pronab Kundu ,&nbsp;Abdulnasser Mahmoud Karami ,&nbsp;Tapas Kamilya ,&nbsp;Ali Akhtar ,&nbsp;Mani Durai ,&nbsp;Krishnamoorthy Shanmugaraj ,&nbsp;Jinhyoung Park ,&nbsp;Praveen Barmavatu ,&nbsp;Md Kasif ,&nbsp;Mathivanan Durai ,&nbsp;Aniruddha Mondal ,&nbsp;Young Ho Ahn","doi":"10.1016/j.diamond.2025.112203","DOIUrl":"10.1016/j.diamond.2025.112203","url":null,"abstract":"<div><div>Carbon dots (CDs) have gained significant attention as a promising theranostic platform, owing to their excellent biocompatibility, tunable fluorescence, and multifunctional properties. In this work, we present the development of highly luminescent CDs synthesized from natural precursors, engineered to serve as a versatile nanoplatform for nitric oxide (NO) delivery. By functionalizing the surface of the CDs with ruthenium nitrosyl (Ru-NO) complexes and folic acid, we created a targeted system (CDs-FAR) that enables precise drug delivery, real-time fluorescence tracking, and light-triggered NO release. The CDs demonstrated exceptional antioxidant activity, with scavenging efficiencies of ∼77 % and ∼89 % in 2,2-Diphenyl-1-picrylhydrazyl (DPPH) and 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid (ABTS) assays, respectively, underscoring their potential for oxidative stress regulation. Furthermore, controlled NO release was achieved under light irradiation (100–300 mW/cm²), highlighting the system's ability to respond to external stimuli for accurate therapeutic action. This multifunctional platform holds great potential for treating disorders related to nitric oxide deficiency and advancing NO-based cancer therapies, offering a novel approach in the fields of precision medicine and nano-theranostics.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"154 ","pages":"Article 112203"},"PeriodicalIF":4.3,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143680780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Controlling the number of layers of Mo-grown CVD graphene through the catalyst thickness","authors":"Leandro Nicolas Sacco ,&nbsp;Artur Dobrowolski ,&nbsp;Bart Boshuizen ,&nbsp;Jakub Jagiełło ,&nbsp;Beata Pyrzanowska ,&nbsp;Adam Łaszcz ,&nbsp;Tymoteusz Ciuk ,&nbsp;Sten Vollebregt","doi":"10.1016/j.diamond.2025.112195","DOIUrl":"10.1016/j.diamond.2025.112195","url":null,"abstract":"<div><div>Depending on the applications based on graphene, single-layer or few-layer graphene would be more beneficial. Ideally, graphene could be nucleated directly with the required thickness. However, some aspects related to graphene thickness and uniformity control still need to be solved. This work aims to better understand graphene formation using Mo thin films as a catalyst. The grown graphene films were characterized using SEM, TEM, XPS, AFM, standard Raman spectroscopy and 3D Raman surface imaging. A correlation between the catalyst thickness and the number of layers is established. All the characterization techniques show that the number of graphene layers inversely scales with the Mo catalyst thickness used for the graphene synthesis. Then, by simply adjusting the catalyst thickness, the number of graphene layers can be engineered from few-layer graphene (FLG) up to multi-layer graphene (MLG). A pinhole distribution of 1 % was detected on the films synthesized on 50 nm and 100 nm Mo thicknesses after the catalyst was etched. On the synthesized FLG (500 nm Mo), no holes were observed on the surface film after the etching process and even after a transfer onto another substrate. These results can enable the formation of FLG with a controlled thickness and good uniformity.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"154 ","pages":"Article 112195"},"PeriodicalIF":4.3,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143637665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}