Carbon Trends最新文献_第7页

Tailoring the properties of graphene nanosheets during electrochemical exfoliation

IF 3.1

Carbon Trends Pub Date : 2025-01-01 DOI: 10.1016/j.cartre.2024.100449

Markus Ostermann , Lukas Kalchgruber , Jürgen Schodl , Peter Lieberzeit , Pierluigi Bilotto , Markus Valtiner

{"title":"Tailoring the properties of graphene nanosheets during electrochemical exfoliation","authors":"Markus Ostermann , Lukas Kalchgruber , Jürgen Schodl , Peter Lieberzeit , Pierluigi Bilotto , Markus Valtiner","doi":"10.1016/j.cartre.2024.100449","DOIUrl":"10.1016/j.cartre.2024.100449","url":null,"abstract":"<div><div>The large-scale production of graphene remains a significant bottleneck in harnessing the potential of this material. Electrochemical exfoliation offers a green, sustainable production protocol that is suitable for industrial scale-up. However, the material produced often suffers from a low yield and limited functional groups, which restricts its use in advanced applications.</div><div>In this study, we introduce a mathematical model that elucidates the intricate influences of production parameters, such as temperature and potential, on the characteristics of the product. A comprehensive understanding of the exfoliation process is achieved through detailed insights provided by X-ray photoelectron spectroscopy, Raman spectroscopy, X-ray diffraction, and powder conductivity measurements. Design-of-Experiment and Pareto analysis are employed to determine the optimal production conditions. As a result, graphene nanosheets, tailored with specific physical and chemical properties (<em>e.g.</em>, functional groups, conductivity), can be produced.</div><div>Furthermore, we describe the significant influence of the cation during sulfate-based anodic exfoliation, which allows for efficiency and cost optimization. In general, the tailoring aspect of this work paves the way towards the industrial production of graphene nanosheets, tailored to the intended application. Simultaneously, the experimental design lays the foundation for a data-driven machine learning method for the optimal synthesis of sustainable two-dimensional materials.</div></div>","PeriodicalId":52629,"journal":{"name":"Carbon Trends","volume":"18 ","pages":"Article 100449"},"PeriodicalIF":3.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143160301","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

Functionalized Graphene Quantum Dots (FGQDs): A review of their synthesis, properties, and emerging biomedical applications

IF 3.1

Carbon Trends Pub Date : 2025-01-01 DOI: 10.1016/j.cartre.2024.100442

Abida Jan , Midhat Batool , Samreen Akram , Akhtar Hussain Malik , Waheed Ahmad Khanday , Waseem A. Wani , Rayees Ahmad Sheikh , Jahangir Ahmad Rather , Palanisamy Kannan

{"title":"Functionalized Graphene Quantum Dots (FGQDs): A review of their synthesis, properties, and emerging biomedical applications","authors":"Abida Jan , Midhat Batool , Samreen Akram , Akhtar Hussain Malik , Waheed Ahmad Khanday , Waseem A. Wani , Rayees Ahmad Sheikh , Jahangir Ahmad Rather , Palanisamy Kannan","doi":"10.1016/j.cartre.2024.100442","DOIUrl":"10.1016/j.cartre.2024.100442","url":null,"abstract":"<div><div>Graphene quantum dots (GQDs) have attracted significant attention due to their unique electronic, optical, physical, and chemical properties. As nanoscale fragments of graphene rich in electrons, GQDs offer enhanced capabilities that elevate their potential across a wide range of applications. This review paper delves into the synthesis, characterization, and applications of functionalized graphene quantum dots (FGQDs), which exhibit exceptional photoelectronic properties resulting from quantum confinement and edge effects. These features position FGQDs as promising materials for optoelectronic technologies. The review also highlights various functionalization strategies, providing valuable insights for researchers seeking to optimize GQDs for specific applications. By understanding the correct functionalization techniques, researchers can tailor the properties of FGQDs to enhance their performance in a range of applications. This article offers an in-depth discussion of synthetic approaches for producing FGQDs with diverse chemical groups and functionalities, alongside a thorough overview of characterization techniques, ranging from morphological and crystallographic analysis to componential and absorption spectroscopy. Furthermore, the review explores the growing potential of FGQDs in biomedical applications, including biosensing, bioimaging, drug delivery, and therapeutics. It underscores the advances in research and development that are crucial for unlocking the full biomedical potential of FGQDs, while also addressing the challenges that remain to be tackled in the future. As the field continues to evolve, the insights presented in this review provide a solid foundation for future breakthroughs in the synthesis and application of FGQDs.</div></div>","PeriodicalId":52629,"journal":{"name":"Carbon Trends","volume":"18 ","pages":"Article 100442"},"PeriodicalIF":3.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143160298","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

Mild opening procedure to obtain open-ended yet long single-wall carbon nanotubes for subsequent filling

IF 3.1

Carbon Trends Pub Date : 2025-01-01 DOI: 10.1016/j.cartre.2024.100439

Aina Fitó-Parera , Miguel Ángel López Carrillo , Marcel Erwan Tonye , Maksiem Erkens , Pegie Cool , Wim Wenseleers , Salomé Forel , Sofie Cambré

{"title":"Mild opening procedure to obtain open-ended yet long single-wall carbon nanotubes for subsequent filling","authors":"Aina Fitó-Parera , Miguel Ángel López Carrillo , Marcel Erwan Tonye , Maksiem Erkens , Pegie Cool , Wim Wenseleers , Salomé Forel , Sofie Cambré","doi":"10.1016/j.cartre.2024.100439","DOIUrl":"10.1016/j.cartre.2024.100439","url":null,"abstract":"<div><div>Encapsulation of molecules inside the hollow core of single-wall carbon nanotubes (SWCNTs) has become an interesting research field to create new functionalities. To fill the SWCNTs, as-synthesized SWCNTs first need to be opened. Typical opening procedures however include harsh (mechanical or chemical) steps, such as strong acid oxidation, grinding, and sonication, which cut the SWCNTs into much shorter segments. While SWCNTs can be synthesized with lengths up to several micrometers, opened SWCNTs typically show maximum lengths of only a few hundred nanometers, limiting their use for filling with long, one-dimensional arrays of molecules or studying the transport of molecules through their hollow core. Here, we present a mild opening procedure to achieve open, yet long SWCNTs. By comparing different processing steps in their ability to open SWCNTs without significantly reducing the SWCNT length, we present a simple three-step procedure including an air oxidation, a mild acidic treatment, and a high-temperature vacuum annealing, resulting in nearly complete opening of all SWCNTs in a sample, independent of the SWCNT chiral structure and diameter. The procedure has been applied to different SWCNT starting batches to confirm its general applicability. While the opening of SWCNTs is characterized by optical spectroscopy after water filling, statistical SWCNT length distributions are obtained through atomic force microscopy and hyperspectral photoluminescence imaging of SWCNTs. Our results demonstrate that mechanical steps, such as grinding and sonication, can be strictly avoided to obtain a significant fraction of opened SWCNTs with longer lengths.</div></div>","PeriodicalId":52629,"journal":{"name":"Carbon Trends","volume":"18 ","pages":"Article 100439"},"PeriodicalIF":3.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143160303","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

Color change mechanism and application of oxidized carbon dots/I2O4 composite (OCDs/I2O4) in alcoholic beverages

IF 3.1

Carbon Trends Pub Date : 2025-01-01 DOI: 10.1016/j.cartre.2024.100440

Ming-yu Shi, Ao Li, Tian-hao Ji, Da-jian Jv, Zhe-mi Xu

{"title":"Color change mechanism and application of oxidized carbon dots/I2O4 composite (OCDs/I2O4) in alcoholic beverages","authors":"Ming-yu Shi, Ao Li, Tian-hao Ji, Da-jian Jv, Zhe-mi Xu","doi":"10.1016/j.cartre.2024.100440","DOIUrl":"10.1016/j.cartre.2024.100440","url":null,"abstract":"<div><div>Currently, ethanol detection in alcoholic beverages typically relies on complicated and costly approaches, including gas chromatography, liquid chromatography, and mass spectrometry, etc. Herein, we developed a non-toxicity, practical, low-cost and portable visual indicator for ethanol detection based on OCDs/I<sub>2</sub>O<sub>4</sub> nanopowders. By color change, the OCDs/I<sub>2</sub>O<sub>4</sub> can visually indicate ethanol concentration ranging from 14 % vol to 56 % vol and the detection limit can be further extended to 2 % vol with a UV-visible spectrum. The OCDs/I<sub>2</sub>O<sub>4</sub> indicator shows good stability and long-term endurance for at least 18 months, and it can be used under different temperatures (at least from 3 °C to 40 °C) and humidity (at least from 10 % to 90 %). A possible mechanism for the color change has been proposed based on the covalent-link hydrogen bonding change between OCDs and I<sub>2</sub>O<sub>4</sub>. The proposed OCDs/I<sub>2</sub>O<sub>4</sub> composite offers a convenient and practical solution for ethanol monitoring in various alcoholic beverages.</div></div>","PeriodicalId":52629,"journal":{"name":"Carbon Trends","volume":"18 ","pages":"Article 100440"},"PeriodicalIF":3.1,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143160299","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

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