Carbon Trends最新文献_第6页

In-situ electrochemical fabrication of holey graphene oxide and oxo-functionalized graphene for electrochemical sensing

IF 3.1

Carbon Trends Pub Date : 2025-01-01 DOI: 10.1016/j.cartre.2024.100447

Gang Li , Ming Qin , Qiang Zhang , Baiqing Yuan , Lanxin Xue , Shuning Zhang , Jingfei Yan , Chunying Xu

引用次数: 0

Effect of fullerene ratio as an organic additive on the hydrogen storage of Se nanoparticles

IF 3.1

Carbon Trends Pub Date : 2025-01-01 DOI: 10.1016/j.cartre.2024.100437

Ban D. Salih , Nora A. Salih , Maysoon A. Hamad , Mustafa A. Alheety , Ahmed R. Mahmood

引用次数: 0

Evaluation of soot particles from different-sized rapeseed oil flames: Scientific focus on a traditional Japanese craft, Nara sumi

IF 3.1

Carbon Trends Pub Date : 2025-01-01 DOI: 10.1016/j.cartre.2024.100433

Akinori Ren , Shoko Kume , Manabu Fujiwara , Sumiaki Nakano

{"title":"Evaluation of soot particles from different-sized rapeseed oil flames: Scientific focus on a traditional Japanese craft, Nara sumi","authors":"Akinori Ren , Shoko Kume , Manabu Fujiwara , Sumiaki Nakano","doi":"10.1016/j.cartre.2024.100433","DOIUrl":"10.1016/j.cartre.2024.100433","url":null,"abstract":"<div><div>Nara sumi is a traditional Japanese craft, the skills and wisdom of which have been handed down through generations by artisans. Soot is a principal material determining sumi ink quality. Hand-made soot from rapeseed oil (lampblack) is still used in traditional Nara sumi instead of mass-produced carbon black. However, currently only one manufacturer continues to produce lampblack, and the artisan's production rules of thumb have not been scientifically studied. This study aims to clarify the effect of flame size variation on soot particle size, the most important rule of thumb in Nara sumi production. High-quality soot purportedly has a smaller particle size and can be generated from a smaller flame. We used three wick sizes to generate different sized flames and measured the particle size distribution of generated soot. The resulting soot particle size was found to increase as the flame increased. To additionally identify the flame area contributing to soot formation, a 2D analysis was conducted on the morphology and chemical state of soot collected from various heights within a rapeseed oil flame. The results show that soot formation progress is limited to the innermost zone of the flame, and only surface oxidation occurs in the middle zone and beyond. Soot transfer from the innermost to the middle zone was considered to be important in soot formation, based on both the morphology and chemical state changing rapidly and greatly at their boundary. These findings can help to preserve the knowledge for the traditional craft and Japanese cultural heritage.</div></div>","PeriodicalId":52629,"journal":{"name":"Carbon Trends","volume":"18 ","pages":"Article 100433"},"PeriodicalIF":3.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143159058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Calcined Co-chelating, imine-crosslinking chitosan as the ORR catalyst of an anion exchange membrane fuel cell

IF 3.1

Carbon Trends Pub Date : 2025-01-01 DOI: 10.1016/j.cartre.2024.100444

Yen-Zen Wang , Ko-Shan Ho , Yu-Chang Huang , Yu-Wei Cheng , Chia-Long Miao , Pei-Ying Yeh

{"title":"Calcined Co-chelating, imine-crosslinking chitosan as the ORR catalyst of an anion exchange membrane fuel cell","authors":"Yen-Zen Wang , Ko-Shan Ho , Yu-Chang Huang , Yu-Wei Cheng , Chia-Long Miao , Pei-Ying Yeh","doi":"10.1016/j.cartre.2024.100444","DOIUrl":"10.1016/j.cartre.2024.100444","url":null,"abstract":"<div><div>Cobalt-chelating imine-crosslinked chitosan (Co-ICCA) is synthesized via Schiff base condensation of terephthalaldehyde and chitosan in the presence of cobalt chloride. Co-ICCA transforms into Co, N-co-doped carbon cathode catalysts (Co-N-Cs) upon calcination. The successful synthesis is confirmed using Fourier Transform Infrared Spectroscopy. The porous morphologies of the calcined Co-ICCA are characterized by transmission electron microscopy, high-resolution transmission electron microscopy, and field-emission scanning electron microscopy. The Co-N-Cs exhibit a high specific surface area (433 m²/g) and porosity, as analyzed by a BET analyzer. X-ray diffraction patterns reveal sharp graphite diffraction peaks and feature peaks of Co-crystal with an FCC lattice when the calcination temperature exceeds 800 °C, indicating high crystallinity.</div><div>Meanwhile, Raman spectra show a higher G-band intensity compared to the D-band. The performance of Co-N-Cs as cathode catalysts, particularly in the oxygen reduction reaction, is evaluated through current-voltage and linear sweep voltammetry curves and compared to commercial Pt/C catalysts. Single-cell using the Co-N-C catalyst as the cathode reaches a high maximum power density of 221 mW cm<sup>-2</sup>, close to the 285 mW cm<sup>-</sup>² achieved with Pt/C as the cathode catalyst.</div></div>","PeriodicalId":52629,"journal":{"name":"Carbon Trends","volume":"18 ","pages":"Article 100444"},"PeriodicalIF":3.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143160304","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhanced selectivity of carbon quantum dots for metal ion detection through surface modification by heteroatom doping: A study on optical properties and theoretical approach

IF 3.1

Carbon Trends Pub Date : 2025-01-01 DOI: 10.1016/j.cartre.2024.100445

María Belén Cánchig , Floralba López , Zaillmar Morales-Navarro , Alexis Debut , Karla Vizuete , Thibault Terencio , Manuel Caetano , Juan Pablo Saucedo-Vázquez

{"title":"Enhanced selectivity of carbon quantum dots for metal ion detection through surface modification by heteroatom doping: A study on optical properties and theoretical approach","authors":"María Belén Cánchig , Floralba López , Zaillmar Morales-Navarro , Alexis Debut , Karla Vizuete , Thibault Terencio , Manuel Caetano , Juan Pablo Saucedo-Vázquez","doi":"10.1016/j.cartre.2024.100445","DOIUrl":"10.1016/j.cartre.2024.100445","url":null,"abstract":"<div><div>Water contamination by toxic metal ions has become a significant issue, requiring the development of effective ion detection methods. Traditional analytical techniques often involve toxic elements or complex devices. Carbon quantum dots (CQDs) have emerged as a promising alternative for optic ion detection due to their unique properties and compatibility with living organisms. This study focuses on synthesizing and functionalizing CQDs with various heteroatoms (N, S) to enhance their optical properties and ion selectivity. CQDs were synthesized using citric acid as the carbon source and modified with <span>l</span>-cysteine, ethylenediamine, and diethylenetriamine. The structural and optical properties of the CQDs were determined using several techniques, including FT-IR, TEM, UV–Vis, and Fluorescence Spectroscopy. The results indicate that doping with heteroatoms significantly alters the absorption and emission properties of CQDs. Particularly, nitrogen-doped CQDs (N<img>CQDs) exhibited the highest absorption and emission intensities, making them ideal for sensor applications. The study also demonstrated that functionalization with sulfur could modulate emission frequencies, enhancing the detection capabilities for specific ions. Fluorescence quenching studies revealed that N<img>CQDs and S-CQDs have a high selectivity for Hg²⁺ ions, attributed both electrostatic and covalent interactions formed between the CQDs and Hg²⁺. Computational studies supported these findings, showing that the interaction with Hg²⁺ significantly affects the energy gap of the CQDs, enhancing their sensitivity. This research contributes to the field of environmental monitoring by providing a practical solution for the detection of free metal ions in water through the development of advanced CQD-based sensors.</div></div>","PeriodicalId":52629,"journal":{"name":"Carbon Trends","volume":"18 ","pages":"Article 100445"},"PeriodicalIF":3.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143160306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancing specific capacitance and energy density in printed supercapacitors: The role of activated wood carbon and electrolyte dynamics

IF 3.1

Carbon Trends Pub Date : 2025-01-01 DOI: 10.1016/j.cartre.2024.100436

Hamed Pourkheirollah , Remuel Isaac M. Vitto , Aleksandrs Volperts , Steffen Thrane Vindt , Līga Grīnberga , Gints Kučinskis , Jari Keskinen , Matti Mäntysalo

{"title":"Enhancing specific capacitance and energy density in printed supercapacitors: The role of activated wood carbon and electrolyte dynamics","authors":"Hamed Pourkheirollah , Remuel Isaac M. Vitto , Aleksandrs Volperts , Steffen Thrane Vindt , Līga Grīnberga , Gints Kučinskis , Jari Keskinen , Matti Mäntysalo","doi":"10.1016/j.cartre.2024.100436","DOIUrl":"10.1016/j.cartre.2024.100436","url":null,"abstract":"<div><div>This study investigates Activated Wood Carbon (AWC) as an electrode material for advancing printed supercapacitors (SCs). AWC, derived from biomass, offers a sustainable alternative to conventional activated carbons. The research highlights the interplay between AWC's structural properties and electrolyte compatibility, addressing challenges in energy storage technologies. Comprehensive analyses, including sorptometry, Raman spectroscopy, X-ray diffraction (XRD), and electrochemical assessments, reveal that AWC's graphitization and structural ordering significantly influence its performance.</div><div>Printed SCs fabricated with AWC demonstrate superior performance compared to those using benchmark Kuraray YP-80F activated carbon, achieving up to 93 % and 90 % higher specific capacitance and energy density at 1.0 V and 1.2 V, respectively. The enhanced performance is attributed to AWC's increased surface area and pore volume, which provide abundant ion storage sites and improve ion mobility. Furthermore, the porous structure of AWC facilitates better compatibility with K<sub>x</sub>H<sub>y</sub>PO<sub>4</sub> electrolytes compared to NaCl, with pseudocapacitive effects also contributing to the improved energy storage behavior.</div><div>This work underscores the potential of biomass-derived carbon materials in creating high-performance, sustainable SCs. Future efforts will focus on optimizing electrode and electrolyte configurations to further enhance device performance, supporting the transition toward renewable energy solutions.</div></div>","PeriodicalId":52629,"journal":{"name":"Carbon Trends","volume":"18 ","pages":"Article 100436"},"PeriodicalIF":3.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143159060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evolution of carbon fiber properties during repetitive recycling via pyrolysis and partial oxidation

IF 3.1

Carbon Trends Pub Date : 2025-01-01 DOI: 10.1016/j.cartre.2024.100438

Marina Corvo Alguacil, Kentaro Umeki, Shujie You, Roberts Joffe

{"title":"Evolution of carbon fiber properties during repetitive recycling via pyrolysis and partial oxidation","authors":"Marina Corvo Alguacil, Kentaro Umeki, Shujie You, Roberts Joffe","doi":"10.1016/j.cartre.2024.100438","DOIUrl":"10.1016/j.cartre.2024.100438","url":null,"abstract":"<div><div>The potential of recycling carbon fiber reinforced polymers (CFRP) as a sustainable solution for waste management is yet to be fully understood. This study reports on the evolution of mechanical, and chemical properties of reclaimed carbon fibers when recycled multiple times via pyrolysis and partial oxidation. The performed work aims at filling the knowledge gap related to repetitive recycling when moving towards a circular flow of resources. A recycling process existing at industrial scale is used to ensure the relevance and usefulness of the results in the current industry scene. Two sets of three identical model composites are recycled using distinct recycling parameters, and their properties are characterized at the end of each recycling cycle. Results show that recycling can lead to an increase in stiffness but can have a negative impact on strength of recovered fibers. Mechanical behaviour shows recovered fibers suitable for secondary applications with medium performance requirements after two recycling cycles. The findings highlight the importance of understanding the material properties evolution during recycling processes. This research contributes to the development of sustainable waste management strategies and a more environmentally friendly future.</div></div>","PeriodicalId":52629,"journal":{"name":"Carbon Trends","volume":"18 ","pages":"Article 100438"},"PeriodicalIF":3.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143160302","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Vertically aligned carbon nanotubes on aluminum foils from biosourced precursors: Application to energy storage

IF 3.1

Carbon Trends Pub Date : 2024-12-21 DOI: 10.1016/j.cartre.2024.100450

Corentin Chatelet , Ugo Forestier-Colleoni , Philippe Banet , Jérémie Descarpentries , Thomas Goislard de Monsabert , Fabien Nassoy , Cécile Reynaud , Mathieu Pinault

{"title":"Vertically aligned carbon nanotubes on aluminum foils from biosourced precursors: Application to energy storage","authors":"Corentin Chatelet , Ugo Forestier-Colleoni , Philippe Banet , Jérémie Descarpentries , Thomas Goislard de Monsabert , Fabien Nassoy , Cécile Reynaud , Mathieu Pinault","doi":"10.1016/j.cartre.2024.100450","DOIUrl":"10.1016/j.cartre.2024.100450","url":null,"abstract":"<div><div>Vertically aligned carbon nanotubes (VACNTs) are among the nanomaterials recognized as efficient for many applications, such as thermal management or energy storage. Since they are mainly produced from hydrocarbon precursors, one of the issue is to reduce the carbon footprint of their synthesis by using bio-sourced precursors. Herein, we use bio-based carbon precursors to effectively grow VACNTs on aluminum thin foils from a one-step catalytic chemical vapor deposition (CCVD) method. This process at moderate temperature and atmospheric pressure is cost-effective and produces good-quality VACNTs on a large scale. We show that we can replace C<sub>2</sub>H<sub>2</sub> with bio-sourced carbon precursors, and also toluene, which acts as a solvent for ferrocene, with more eco-friendly solvents. We observe that the activation energy of the growth process depends significantly on the precursor. After a selection of compatible carbon precursors and a parametric study, a 100 µm high VACNT carpet was obtained on Al foils with ethylene and butanol as carbon precursors and ferrocene solvent respectively. The VACNT samples were directly tested as supercapacitor electrodes. The results show that the volumetric capacitances obtained with bio-based precursors match those obtained with acetylene as the carbon precursor.</div></div>","PeriodicalId":52629,"journal":{"name":"Carbon Trends","volume":"19 ","pages":"Article 100450"},"PeriodicalIF":3.1,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143148006","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Carbon fiber from direct carbonization of PEDOT:PSS precursor fibers

IF 3.1

Carbon Trends Pub Date : 2024-12-18 DOI: 10.1016/j.cartre.2024.100448

Leah E. Noble , Ruben Sarabia-Riquelme , E. Ashley Morris , Gehan S. Rupasinghe , Alexandra F. Paterson , Matthew C. Weisenberger

{"title":"Carbon fiber from direct carbonization of PEDOT:PSS precursor fibers","authors":"Leah E. Noble , Ruben Sarabia-Riquelme , E. Ashley Morris , Gehan S. Rupasinghe , Alexandra F. Paterson , Matthew C. Weisenberger","doi":"10.1016/j.cartre.2024.100448","DOIUrl":"10.1016/j.cartre.2024.100448","url":null,"abstract":"<div><div>An important factor limiting widespread carbon fiber utilization is the immense energy required for its manufacture. Specifically, the pre-carbonization stabilization processing step required for polyacrylonitrile and pitch fiber precursors accounts for a large portion of the total processing time and embodied energy associated with carbon fiber production. However, stabilization can be omitted and a direct carbonization performed for certain precursors, which are typically within the class of aromatic polymers. In this work, poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) is identified as a new precursor for direct carbonization. PEDOT:PSS direct carbonization yielded non-fused, small-diameter carbon fibers free of surface defects and voids visible by SEM, with an unoptimized carbon fiber yield of 30–40 wt.%. A maximum tensile strength of 1.5 GPa and elastic modulus of 220 GPa were achieved upon direct carbonization to 1000 °C and 2700 °C, respectively. A relatively high apparent tensile strain to failure of approximately 2 % was also observed at 1000 °C. The evolution of fiber tensile and electrical properties with direct carbonization temperature was studied, in addition to crystal and chemical structural changes via WAXS and Raman spectroscopy. Furthermore, the effect of precursor PEDOT concentration (relative to PSS) on resultant carbon fiber properties was evaluated. It was also shown that the inclusion of an oxidative stabilization step prior to carbonization did not improve carbon fiber properties, demonstrating the suitability of PEDOT:PSS for direct carbonization.</div></div>","PeriodicalId":52629,"journal":{"name":"Carbon Trends","volume":"19 ","pages":"Article 100448"},"PeriodicalIF":3.1,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143148002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Toward mesoporous 1D structures: Expanding interlayer spaces in cup-stacked Carbon nanotubes 面向介孔一维结构：扩展杯状堆叠碳纳米管的层间空间

IF 3.1

Carbon Trends Pub Date : 2024-12-01 DOI: 10.1016/j.cartre.2024.100432

In-Soo Choi , Kazunori Fujisawa , Koki Kaji , Kohei Nishimura , Kodai Asaki , Cheon-Soo Kang , Hiroyuki Muramatsu , Takuya Hayashi

{"title":"Toward mesoporous 1D structures: Expanding interlayer spaces in cup-stacked Carbon nanotubes","authors":"In-Soo Choi , Kazunori Fujisawa , Koki Kaji , Kohei Nishimura , Kodai Asaki , Cheon-Soo Kang , Hiroyuki Muramatsu , Takuya Hayashi","doi":"10.1016/j.cartre.2024.100432","DOIUrl":"10.1016/j.cartre.2024.100432","url":null,"abstract":"<div><div>Tailoring the pore structure in materials is a key to achieving efficient ion/molecular transportation. The interlayer space in graphitic materials can be expanded <em>via</em> the oxidation–exfoliation process. However, since the intercalation-mediated oxidation method does not work for carbon nanotubes (CNTs) that have semi-closed graphitic structures, mesoporous 1D nanostructure has been rarely prepared. In the present study, modified Hummers method-based oxidation was applied to cup-stacked carbon nanotubes (CSCNTs) with open-edge graphitic structure. The degree of oxidation was controlled by the weight ratio of the oxidant and added CNTs. The complete basal-plane oxidation was achieved when the oxidant was 5 times the weight of CSCNTs. Following thermal reduction further expanded the interlayer spaces of the CSCNTs resulting in the formation of mesoporous 1D nanostructure with alternating stacked–expanded graphene layers resembling honeycomb shape, indicating the importance of the unique nanostructure of CSCNTs for pore formation. Heat-treatment of the obtained mesoporous 1D structure helped improve the crystallinity, but at the same time deteriorated the porosity features as the heat-treatment temperature increased. Thermally induced defect repairing flattened the graphitic structure which also induced layer restacking; thus, this revealed the trade-off relationship between the crystallinity and porosity.</div></div>","PeriodicalId":52629,"journal":{"name":"Carbon Trends","volume":"17 ","pages":"Article 100432"},"PeriodicalIF":3.1,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142748152","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0