Carbon Trends最新文献

{"title":"Optimizing nitrogen doping strategies in hard carbon for enhanced performance in sodium-ion batteries","authors":"Maksat Maratov ,&nbsp;Aibar Alpysbayev ,&nbsp;Dilshat Abduakhitov ,&nbsp;Bauyrzhan Myrzakhmetov ,&nbsp;Kenes Kudaibergenov ,&nbsp;Zhumabay Bakenov ,&nbsp;Seung-Taek Myung ,&nbsp;Aishuak Konarov","doi":"10.1016/j.cartre.2025.100523","DOIUrl":"10.1016/j.cartre.2025.100523","url":null,"abstract":"<div><div>Sodium-ion batteries are emerging as a promising and cost-effective alternative to lithium-ion batteries for large-scale applications. Among various anode materials, hard carbon has become a preferred choice for sodium-ion batteries. This study focuses on synthesizing hard carbon from bio-waste cherries and investigating the impact of nitrogen doping strategies on its electrochemical performance. Using urea as a precursor, post nitrogen doping was found to enhance the structural properties of hard carbon, facilitating better penetration of sodium ions into its internal structure. The results revealed that post nitrogen doping significantly improved the capacity of hard carbon, increasing it from 206 mAh g⁻¹ to 274 mAh g⁻¹ at a current density of 20 mA g⁻¹. Additionally, the post nitrogen-doped hard carbon demonstrated an impressive capacity of 110 mAh g⁻¹ at a high current density of 1 A g⁻¹. These findings underscore the potential of nitrogen doping in optimizing hard carbon for sodium-ion battery applications.</div></div>","PeriodicalId":52629,"journal":{"name":"Carbon Trends","volume":"20 ","pages":"Article 100523"},"PeriodicalIF":3.1,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144154858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Flash graphene: From synthesis to potential applications","authors":"Godwin Mong Kalu-Uka ,&nbsp;Agnidip Sarkar ,&nbsp;Abraham Chinedu Kalu-Uka ,&nbsp;Sandeep Kumar","doi":"10.1016/j.cartre.2025.100524","DOIUrl":"10.1016/j.cartre.2025.100524","url":null,"abstract":"<div><div>The global impact of the poor waste management practices in developing countries has begun to weary the developed nations of the world. For this reason, researchers have striven to provide sustainable solutions to the waste management crisis by improving the effectiveness of the existing waste management systems and developing new methodologies for converting waste into energy and useful materials. The latest breakthrough in the conversion of waste into useful materials is the synthesis of flash graphene through flash joule heating technology. However, studies on flash graphene have remained a niche research area for a few authors, despite the unique properties and potential applications of flash graphene. Though this situation could be attributed to a number of factors, the authors believe that more researchers would be motivated to study the synthesis and applications of flash graphene if there were sufficient review articles on the subject matter. To this end, the authors have comprehensively reviewed the existing literature, with the primary objective of systematically discussing the research findings on flash graphene synthesis, characterisation and applications.</div></div>","PeriodicalId":52629,"journal":{"name":"Carbon Trends","volume":"20 ","pages":"Article 100524"},"PeriodicalIF":3.1,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144134434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis of g-C3N4 Triazine-structure via modified low-temperature polycondensation of Melamine-Barbiturate","authors":"Veronika Yu. Yurova,&nbsp;Daniil Yu. Piarnits,&nbsp;Ivan V. Moskalenko,&nbsp;Igor S. Smirnov,&nbsp;Iuliia V. Maltceva,&nbsp;Vasiliy A. Krylov,&nbsp;Vera E. Sitnikova,&nbsp;Evgeny Smirnov,&nbsp;Ekaterina V. Skorb","doi":"10.1016/j.cartre.2025.100522","DOIUrl":"10.1016/j.cartre.2025.100522","url":null,"abstract":"<div><div>A novel supramolecular precursor strategy was developed for the low-temperature synthesis of triazine-structured graphitic carbon nitride (g-C₃N₄). The supramolecular assembly of melamine and barbituric acid enables a significant reduction in the synthesis temperature—from the conventional 550 °C to 350 °C—and shortens processing time to just 60 min. Structural and physicochemical characterization (XRD, FTIR, SEM, and BET) confirms the formation of a triazine-based g-C₃N₄ framework with a specific surface area of 17.6 m²/g and a uniform mesoporous structure (∼3.5 nm). Photocatalytic experiments demonstrate efficient degradation of organic dyes under visible-light irradiation (λ = 365 and 405 nm), indicating the material's enhanced photoactivity. Scanning vibrating electrode technique (SVET) measurements further reveal a clear photoinduced ionic current response under both excitation wavelengths, supporting the presence of defect-associated energy states within the bandgap and confirming the ability of CN-MB-350 to function as a visible-light-responsive semiconductor. The proposed method offers a cost-effective and energy-saving alternative to conventional g-C₃N₄ synthesis and expands the potential for structural tuning of carbon nitride materials via precursor engineering.</div></div>","PeriodicalId":52629,"journal":{"name":"Carbon Trends","volume":"20 ","pages":"Article 100522"},"PeriodicalIF":3.1,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144154857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Advancing CO2 separation and capture in post-combustion scenarios using resonant vibration techniques","authors":"Amirhosein Riahi ,&nbsp;Julie Muretta ,&nbsp;Richard LaDouceur","doi":"10.1016/j.cartre.2025.100521","DOIUrl":"10.1016/j.cartre.2025.100521","url":null,"abstract":"<div><div>Carbon dioxide (CO₂) requires specialized capture methods for effective mitigation. Biochar has garnered significant interest as a versatile, porous solid adsorbent due to its cost-effective production, thermal, chemical, and mechanical stability, and minimal environmental impact. However, its small surface area and diffusional issues result in slow CO₂ adsorption kinetics and limited capacity, hindering widespread adoption. To address this limitation, most research in the field focuses on chemical approaches to enhance biochar's adsorption capabilities. While these methods are effective, concerns remain about their overall carbon neutrality and environmental sustainability due to the production of toxic chemicals. In this work, an innovative Process Intensification technique—Low-Frequency High-Amplitude (LFHA) resonant vibratory mixing—is proposed to enhance selective CO₂ adsorption onto hemp-derived biochar under simulated post-combustion conditions (16 % V/V CO₂/N₂) representative of coal-fired power plant exhaust streams. By optimizing biochar's physical properties and facilitating CO₂ transport processes, the resonant vibrations are shown to increase the CO₂ selectivity factor by 25.49 %, from 9.61 in non-vibrational adsorption to 12.07 in vibrational adsorption. The calculated CO₂ working dynamic capacity from selective adsorption closely corresponded to the equilibrium capacity obtained through isothermal measurements at room temperature (25 °C) and a partial pressure of 0.16. The values were 9.12 % lower for non-vibrational adsorption and 20.64 % lower for vibrational adsorption, thereby demonstrating the efficiency of the developed method. The microstructure and the textural properties of biochar have been evaluated by means of Scanning Electron Microscopy (SEM), Diffuse Reflectance Infrared Fourier Transform Spectroscopy (DRIFTS), and Raman spectroscopy. Experimental results also indicate the reusability and regeneration of biochar for cyclic CO₂ adsorption through two distinct methods.</div></div>","PeriodicalId":52629,"journal":{"name":"Carbon Trends","volume":"20 ","pages":"Article 100521"},"PeriodicalIF":3.1,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144070708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preparation and properties of superhydrophobic composite coatings based on carbon materials/SiO2","authors":"Shuai Wang ,&nbsp;Wei Si ,&nbsp;Sijia Zhang ,&nbsp;Shahid Muhammad","doi":"10.1016/j.cartre.2025.100519","DOIUrl":"10.1016/j.cartre.2025.100519","url":null,"abstract":"<div><div>Conductive superhydrophobic materials have very important applications in the fields of deicing, electromagnetic shielding, electronic intelligence, etc. However, the current poor durability and fragile structure of superhydrophobic surfaces have significantly limited the application of superhydrophobic conductive materials. In this paper, wear-resistant and conductive superhydrophobic coatings were prepared by directly adding carbon fibers and carbon nanotubes (CNTs) to the precursor solution and modified with silane coupling agent. Based on our findings, the addition of silane coupling agent enhanced the adhesion between the nanoparticles and the substrate. Carbon nanotubes were interwoven with SiO₂ particles to form a micrometer/nanometer structure and generate air pockets, resulting in a high contact angle and self-cleaning effect. Furthermore, the high electrical conductivity, high compressive strength and high tensile strength of carbon fibers improved the wear resistance and electrical properties of the coating. This study provides a simple and practical method for the preparation of wear-resistant and conductive superhydrophobic surfaces, which has a broad application prospect in various domains.</div></div>","PeriodicalId":52629,"journal":{"name":"Carbon Trends","volume":"20 ","pages":"Article 100519"},"PeriodicalIF":3.1,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144069330","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Organic bistable memory devices utilizing PMMA polymer matrix-based ZnOC60 core-shell QDs nanocomposites","authors":"Jaeho Shim ,&nbsp;Jinseo Park ,&nbsp;Seok-Ho Seo ,&nbsp;Ju Hee You ,&nbsp;Dong Ick Son","doi":"10.1016/j.cartre.2025.100517","DOIUrl":"10.1016/j.cartre.2025.100517","url":null,"abstract":"<div><div>This study explores the development of organic bistable memory devices (OBMDs) leveraging ZnO-fullerene (C₆₀) core-shell QDs embedded within a poly(methyl methacrylate) (PMMA) polymer matrix. Employing a spin-coating methodology, ZnO QDs were encapsulated with fullerene C₆₀, a molecule renowned for its high electron affinity, to establish a robust core-shell configuration. This design significantly enhanced quantum confinement and provided efficient charge trapping capabilities. Structural analyses using transmission electron microscopy (TEM) confirmed the uniform dispersion and precise formation of ZnO<img>C₆₀ QDs, exhibiting an average particle size of approximately 10 nm within the polymer matrix. The electrical performance of Al/ZnO<img>C₆₀ QD-embedded PMMA/ITO devices was evaluated at 300 K, revealing clear bistable characteristics. The devices achieved a high ON/OFF current ratio of 7.46 × 10³, demonstrated exceptional cycling endurance exceeding 1.5 × 10⁴ cycles, and exhibited long-term retention surpassing 1.2 × 105 s. Detailed analysis of current-voltage (I-V) data highlighted Fowler-Nordheim (F-N) tunneling as a key mechanism facilitating efficient memory operation. These findings underscore the potential of ZnO<img>C₆₀ core-shell QDs as a transformative material system for advanced non-volatile memory technologies. This work provides a foundation for further exploration into scalable and energy-efficient memory devices suitable for next-generation electronics and optoelectronics.</div></div>","PeriodicalId":52629,"journal":{"name":"Carbon Trends","volume":"20 ","pages":"Article 100517"},"PeriodicalIF":3.1,"publicationDate":"2025-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143916782","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fluorescent Chitosan-Europium hydroxyapatite beads for drug delivery","authors":"Joana Bahamonde-Duarte ,&nbsp;Sarah Briceño ,&nbsp;Karla Vizuete ,&nbsp;Alexis Debut ,&nbsp;Luis J. Borrero-González ,&nbsp;Gema González","doi":"10.1016/j.cartre.2025.100513","DOIUrl":"10.1016/j.cartre.2025.100513","url":null,"abstract":"<div><div>Fluorescent Chitosan-Europium-doped hydroxyapatite beads (HAp:xEu<span><math><msup><mrow></mrow><mrow><mn>3</mn><mo>+</mo></mrow></msup></math></span>/CS with 0 <span><math><mo>≤</mo></math></span> x <span><math><mo>≤</mo></math></span> 0.2) were synthesized for the delivery of ciprofloxacin as a model drug. Europium-doped hydroxyapatite nanoparticles were synthesized using the hydrothermal method and thermally treated at 600 <span><math><mrow><msup><mrow></mrow><mrow><mo>∘</mo></mrow></msup><mtext>C</mtext></mrow></math></span> for 2 h. Hydroxyapatite nanoparticles were combined with chitosan to form the beads. The beads were characterized using Fourier transform infrared spectroscopy, fluorescence microscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy, luminescence spectroscopy, and ultraviolet–visible spectroscopy. Chitosan-Europium-doped hydroxyapatite beads reduce the initial burst release of ciprofloxacin and extend the release period, making the beads suitable for sustained potential drug delivery applications. The results reveal that the fluorescence and emission properties were enhanced by the interaction of ciprofloxacin with the beads. These beads offer a combination of optical properties and prolonged ciprofloxacin release with several advantages over conventional immediate-release formulations that could improve therapeutic efficacy.</div></div>","PeriodicalId":52629,"journal":{"name":"Carbon Trends","volume":"20 ","pages":"Article 100513"},"PeriodicalIF":3.1,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143937189","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Low-density functionalized amorphous carbon nanofoam as binder-free Thin-film Supercapacitor electrode","authors":"Subrata Ghosh ,&nbsp;Massimiliano Righi ,&nbsp;Andrea Macrelli ,&nbsp;Francesco Goto ,&nbsp;Marco Agozzino ,&nbsp;Gianlorenzo Bussetti ,&nbsp;Valeria Russo ,&nbsp;Andrea Li Bassi ,&nbsp;Carlo S. Casari","doi":"10.1016/j.cartre.2025.100516","DOIUrl":"10.1016/j.cartre.2025.100516","url":null,"abstract":"<div><div>Nanoporous carbon materials containing small domains of <em>sp</em>²-carbon with highly disordered structures are promising for supercapacitor applications. Herein, we synthesize amorphous carbon nanofoam with 98% volumetric void fraction and low mass density of around 30 mg/cm³ by pulsed laser deposition at room temperature. With the unavoidable oxygen functional groups on the nanoporous surface, carbon nanofoam and nitrogen-functionalized carbon nanofoams are directly grown on the desired substrate under different background gases (Ar, N₂, N₂_<img>H₂)_, and employed as supercapacitor electrodes. Among the background gases used in synthesis, the use of nitrogen yields nanofoam with higher thickness and more N-content with higher graphitic-N. From the test of amorphous carbon nanofoam supercapacitor device, nitrogenated amorphous carbon electrode shows a higher areal capacitance of 4.1 mF/cm² at 20 mV/s in aqueous electrolyte, a better capacitance retention at higher current, and excellent cycle stability (98%) over 10,000 charge-discharge cycles are achieved compared to not-functionalized counterpart prepared under Ar background gas (2.7 mF/cm² and cycle stability of 88%).</div></div>","PeriodicalId":52629,"journal":{"name":"Carbon Trends","volume":"20 ","pages":"Article 100516"},"PeriodicalIF":3.1,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143922779","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Low-energy consumption rapid synthesis of high-fluorescence nitrogen-doped carbon dots at room temperature using a combusted shrimp shell combined solution and application to catechins detection","authors":"Yi Chen Huang,&nbsp;Jun Yi Wu","doi":"10.1016/j.cartre.2025.100515","DOIUrl":"10.1016/j.cartre.2025.100515","url":null,"abstract":"<div><div>Shrimp shells are used as the carbon and nitrogen source to produce high-fluorescence nitrogen-carbon dots at room temperature by employing a cutting process based on NaCl crystals without added nitrogen-doped agents. The synthesis process is rapid (&lt;5 min) and easy. The synthesized nitrogen-doped carbon dots (NCDs) are characterized using photoluminescence (PL) spectroscopy, transmission electron microscopy (TEM), scan electron microscopy (SEM), Fourier-transform infrared (FTIR) spectroscopy, and energy dispersive X-ray (EDX) analysis. The synthesized NCDs exhibit high fluorescence and are effectively used in the instant and fast detection of tea freshness.</div></div>","PeriodicalId":52629,"journal":{"name":"Carbon Trends","volume":"20 ","pages":"Article 100515"},"PeriodicalIF":3.1,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143877288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Augmented MR of half-metallic ferromagnetic CrO2 based thin films & spin-controlled device in SWCNT-FET architecture","authors":"Sudhanshu Dwivedi ,&nbsp;Somnath Biswas","doi":"10.1016/j.cartre.2025.100512","DOIUrl":"10.1016/j.cartre.2025.100512","url":null,"abstract":"<div><div>Spin-controlled device in single-walled carbon nanotube-field effect transistor (<strong>SWCNT-FET)</strong> architecture are patterned by the combinatorial lithographic techniques that are made-up of the chromium oxides electrodes comprising of half-metal <strong>CrO₂</strong> that is ferromagnetic in nature. Chromium oxides thin films were deposited over isostructural rutile-type-tetragonal <strong>TiO₂</strong> layers on <strong>SiO₂/Si</strong> substrates. The as-deposited thin films consisted of the chromium-<em>di</em>-oxide (<strong>CrO₂</strong>) as the dominant phase along with the minor phase of antiferromagnetic <strong>Cr₂O₃</strong>. We report on the elaborate vibrational bands analysis of <strong>CrO₂</strong> in the <strong>2D</strong> thin film configuration based on Fourier transform infrared spectroscopic (<strong>FTIR</strong>) characterization. In the <strong>X-ray</strong> photoelectron spectroscopy (<strong>XPS</strong>) studies, we mention surface bonding elements of chromium oxides thin films along with the comprehensive description of different states. Magnetic force microscopic (<strong>MFM</strong>) images revealed the magnetic grain size of ∼235 nm in the chromium oxides thin films. Electrical &amp; magnetoresistive studies confirmed the dominance of intergranular tunnelling mechanism along with an <strong>MR %</strong> = 40 % at <strong><em>T</em></strong> = 290 K. Spin-controlled device has been patterned by the electron beam lithography (<strong>EBL</strong>) by employing chemical etching technique in case of half-metal <strong>CrO₂</strong> for the first time. We demonstrate the gate-dependent <strong>MR %</strong> in these spin-controlled devices of +60 % and -79 % under out-of-pane geometry of <strong><em>H</em></strong> = 0.1 T &amp; <strong><em>H</em></strong> = 0.5 T at the temperature of <strong><em>T</em></strong> = 290 K, respectively.</div></div>","PeriodicalId":52629,"journal":{"name":"Carbon Trends","volume":"20 ","pages":"Article 100512"},"PeriodicalIF":3.1,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143899955","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}