Carbon Letters最新文献

{"title":"Carbon nanotubes as heterogeneous catalysts for the multicomponent reaction synthesis of heterocycles","authors":"Ramin Javahershenas,&nbsp;Vadim A. Soloshonok,&nbsp;Karel D. Klika,&nbsp;Peter J. Jervis","doi":"10.1007/s42823-024-00818-x","DOIUrl":"10.1007/s42823-024-00818-x","url":null,"abstract":"<div><p>Heterocycles are an important class of compounds that are widely used in pharmaceuticals, agrochemicals, dyes, and materials. Multicomponent reactions (MCRs) offer efficient synthetic routes for producing these complex structures. The search for effective and sustainable catalytic processes in organic synthesis has led to the exploration of various nanomaterials as potential catalysts. To this end, carbon nanotubes (CNTs) have recently emerged as promising heterogeneous catalysts for the MCR synthesis of heterocycles due to their unique properties, which include high surface area and reactivity, tunable surface chemistry, excellent electrical conductivity, recyclability, and exceptional thermal and chemical stability. This review provides a comprehensive analysis and overview of the use of CNTs as catalysts for synthesizing heterocycles via MCRs and their advantages.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":506,"journal":{"name":"Carbon Letters","volume":"35 1","pages":"75 - 105"},"PeriodicalIF":5.5,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143513223","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":"Optimization of mixed agro residue pellets for enhanced fuel quality and economic feasibility","authors":"Bhautik Gajera,&nbsp;Arghya Datta,&nbsp;Anil Kumar Sarma,&nbsp;Mithilesh Kumar Jha","doi":"10.1007/s42823-024-00819-w","DOIUrl":"10.1007/s42823-024-00819-w","url":null,"abstract":"<div><p>The optimization of pellet fuels composed of rice straw, mustard straw, and sawdust was investigated in the present study to improve their properties and utility. Response surface methodology (RSM) and an artificial neural network (ANN) integrated with a multi-objective genetic algorithm (MOGA) were applied to optimize pellet composition for enhanced heating value and minimized ash, nitrogen, and sulfur content. An optimal blend of 74.40% rice straw, 15.60% mustard straw, and 10% sawdust was identified by RSM. These proportions were closely approximated by the MOGA-ANN model within ±1%, and the results were confirmed through experimental validation. Combustion ion chromatography was also used, to analyze the biomasses and the optimized blend, revealing reduced chloride (4189 mg/kg) and sulfur (2716 mg/kg) levels. These results were validated subsequently through experimental tests, confirming the accuracy of the proposed models. A techno-economic analysis indicated that a generation cost of Rs. 10.71 per unit would be associated with a fully agro-residue-based power plant, while less than Rs. 5.28–Rs. 5.31 would be the cost of generation per unit of electricity observed with 5% biomass co-firing in thermal plants. This study demonstrates that improved fuel quality and economic feasibility for biomass power generation can be achieved through strategic biomass blending and co-firing. These findings demonstrated that the blending of various biomass can be a viable strategy for enhancing the characteristics of pellet fuels on an industrial scale.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":506,"journal":{"name":"Carbon Letters","volume":"35 2","pages":"709 - 727"},"PeriodicalIF":5.5,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740639","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":"Glucose-derived hard carbon/carbon nanotube neural network architectures for enhanced sodium ion storage","authors":"Yingbo Kang,&nbsp;Yinglong Weng,&nbsp;Xiaotong Han,&nbsp;Jianping Zhang,&nbsp;Xu Yu,&nbsp;Bo Wang","doi":"10.1007/s42823-024-00815-0","DOIUrl":"10.1007/s42823-024-00815-0","url":null,"abstract":"<div><p>Developing advanced anode materials is one of the effective strategies to enhance the electrochemical performance of sodium-ion batteries (SIBs). Herein, inspired by the biological central nervous system structure, we report a facile and efficient strategy to fabricate the three-dimensional hierarchical neural network-like carbon architectures, where the glucose-derived hard carbon (HC) nanospheres are in situ assembled and embedded in carbon nanotube (CNT) network nanostructure (HC/CNT hybrid networks). The HC nanospheres with large carbon interlayer spacing help to decrease the diffusion length of sodium ions and the interconnected CNT networks enable the rapid electron transfer during charge/discharge process. Benefiting from these structure merits, the as-made HC/CNT hybrid networks can deliver a superior rate capacity of 162 mA h g⁻¹ at the current density of 5 A g⁻¹. Additionally, it exhibits excellent cycling performance with a capacity retention rate of 86.3% after 140 cycles. This work offers a promising candidate anode material for SIBs and a new prospect towards carbon-based composites design, simultaneously.</p></div>","PeriodicalId":506,"journal":{"name":"Carbon Letters","volume":"35 2","pages":"699 - 707"},"PeriodicalIF":5.5,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740770","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":"Hierarchical bimetallic nanoparticles embedded nitrogen-doped carbon derived from ZIF-67 composites for efficient electrochemical nitrite sensing","authors":"Jingwen Zhao,&nbsp;Xiaotian Guo,&nbsp;Wenzhuo Sun,&nbsp;Jing Wang,&nbsp;Jizhou Jiang,&nbsp;Huan Pang","doi":"10.1007/s42823-024-00807-0","DOIUrl":"10.1007/s42823-024-00807-0","url":null,"abstract":"<div><p>Nitrite is commonly found in various aspects of daily life, but its excessive intake poses health risks like blood oxygen transport impairment and cancer risks. Accurate detection of nitrite is crucial for preventing its potential harm and ensuring public health. In this work, Cu–Co bimetallic nanoparticles (NPs) incorporated nitrogen-doped carbon dodecahedron (Cu/Co@N–C/CNTs-X, where X denotes the carbonization temperatures) are synthesized by facile carbonization of CuO@ZIF-67 composites. Cu and Co NPs are uniformly embedded in the carbon dodecahedron decorated by carbon nanotubes (CNTs) without agglomeration. Combining the superior catalytic from Cu and Co NPs with the electrical conductivity and stability from the carbon frameworks, the Cu/Co@N–C/CNTs-600 composite as catalyst detected nitrite concentrations ranging from 1 to 5000 μM, with sensitivity values of 0.708 μA μM^–1 cm^–2, and a detection limit of 0.5 μM. Moreover, this sensor demonstrated notable selectivity, stability and reproducibility. The design of Cu/Co@N–C/CNTs-X catalysts prepared in this study can be used as an attractive alternative in the fields of food quality and environmental detection.</p></div>","PeriodicalId":506,"journal":{"name":"Carbon Letters","volume":"35 2","pages":"635 - 643"},"PeriodicalIF":5.5,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740592","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":"Effect of carbon conductor dispersion and composition in dry cathode electrode on LiB performances","authors":"Chae Yeon Lim,&nbsp;Gyori Park,&nbsp;Kyung Jin Lee","doi":"10.1007/s42823-024-00812-3","DOIUrl":"10.1007/s42823-024-00812-3","url":null,"abstract":"<div><p>As increasing markets for Lithium‒ion battery (LiB), several environmental issues have attained great attention. Especially, the organic solvent N‒Methyl‒2‒Pyrrolidone (NMP), commonly used in the traditional slurry casting process for fabricating LiB electrodes, will be about to be regulated due to its toxicity and the environmental concerns. Therefore, the production of LiB electrodes by a dry process without using NMP organic solvents is of special interest nowadays. In the dry process, it is generally accepted that 1‒dimensional carbon materials like carbon nanotubes (CNT) are beneficial than conventional carbon conductor such as carbon blacks (CB). However, CB is inevitably included during the CNT production, simultaneously as an impurity. Refining CNT from CNT/CB mixture can cause another cost obviously. On the other hand, there have been limited information to study dispersion of carbon materials in electrode with respect to dispersion method and types of carbon conductor. Here, we systematically test the effect of dispersibility of carbon conductor in electrode according to dispersion method and type of carbon conductors. In addition, effect of CB amount in carbon conductor are also elucidated on manufacturing procedure, properties of electrode and their electrochemical performances.</p></div>","PeriodicalId":506,"journal":{"name":"Carbon Letters","volume":"35 2","pages":"675 - 685"},"PeriodicalIF":5.5,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740576","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":"Carbon nanomaterials: a promising avenue in colorectal cancer treatment","authors":"Marzieh Ramezani Farani,&nbsp;Mandana Lak,&nbsp;William C. Cho,&nbsp;Haneul Kang,&nbsp;Maryam Azarian,&nbsp;Fatemeh Yazdian,&nbsp;Sharareh Harirchi,&nbsp;Keyvan Khoshmaram,&nbsp;Iraj Alipourfard,&nbsp;Kiavash Hushmandi,&nbsp;Seung-Kyu Hwang,&nbsp;Yun Suk Huh","doi":"10.1007/s42823-024-00805-2","DOIUrl":"10.1007/s42823-024-00805-2","url":null,"abstract":"<div><p>Colorectal cancer (CRC) poses a significant global public health challenge, accounting for 10% of newly diagnosed cancer cases and causing 9.4% of cancer-related deaths. Conventional treatment methods like surgery, chemotherapy, and radiation have shown limited success despite the increasing incidence of CRC. Thus, there is an urgent need for innovative therapeutic approaches. Researchers are continually working on developing novel technologies, notably focused on the creation of safe and effective cancer nanomedicines, in their continuous effort to advance cancer treatment. Nanoparticles exist at the nanoscale. Nanoparticles at the nanoscale have distinctive properties that leverage the metabolic disparities between cancerous and normal cells. This property allows them to selectively induce substantial cytotoxicity in cancer cells while minimizing damage to healthy tissue. Carbon nanomaterials (CNMs), including graphene oxide (GO), carbon nanotubes (CNTs), and nanodiamonds (NDs), have undergone extensive investigation due to their biocompatibility, surface-to-volume ratio, thermal conductivity, rigid structural properties, and ability for post-chemical modifications. Notably, GO has emerged as a promising two-dimensional (2D) material for cancer treatment. Several groundbreaking nanoparticle-based therapies, predominantly utilizing GO, are currently undergoing clinical trials, with some already gaining regulatory clearance.</p></div>","PeriodicalId":506,"journal":{"name":"Carbon Letters","volume":"34 8","pages":"2035 - 2053"},"PeriodicalIF":5.5,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142413320","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":"Fe, N-doped carbon quantum dots from pig blood as peroxymonosulfate activator for photodegradation of ibuprofen","authors":"Jinghong Chen,&nbsp;Huan Xie,&nbsp;Yuyin Lin,&nbsp;Zhenxing Tan,&nbsp;Mingchen Zheng,&nbsp;Yong Yuan,&nbsp;Lihua Zhou","doi":"10.1007/s42823-024-00809-y","DOIUrl":"10.1007/s42823-024-00809-y","url":null,"abstract":"<div><p>Ibuprofen (IBU), a common pharmaceutical and personal care product (PPCP), is a pervasive water pollutant with adverse ecological and human health effects after transformation and accumulation. In this study, we synthesized Fe, N-doped carbon quantum dots (Fe, N-CQDs) using pig blood and FeCl₃ as a precursor via a one-step hydrothermal method. TEM, XRD, XPS, and UV–Vis were used to characterize the physical and chemical properties of Fe, N-CQDs. We investigated the feasibility of Fe, N-CQDs in activating peroxymonosulfate (PMS) for IBU degradation under visible light. The experimental results revealed that Fe in Fe, N-CQDs predominantly formed a stable complex through Fe–N and Fe-OH, with a high degree of graphitization and a sp²-hybridized graphitic phase conjugate structure. The Fe, N-CQDs/Light/PMS system exhibited strong activity, degrading over 87% of IBU, maintaining a wide pH range (3–10) adaptability. Notably, Fe, N-CQDs acted as visible-light catalysts, promoting Fe³⁺/Fe²⁺ cycling and PMS activation, generating both free radicals (SO₄^•–, ·OH) and non-radicals (¹O₂, h⁺) to effectively degrade IBU. This study presents an innovative approach for the sustainable utilization of pig blood as a biomass precursor to synthesize Fe- and N-doped carbon materials. This study provides a new approach for the sustainable and value-added utilization of natural wastes and biomass precursors of Fe- and N-doped carbon materials, which can be used to treat pollutants in water while treating discarded pig blood.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":506,"journal":{"name":"Carbon Letters","volume":"35 2","pages":"645 - 657"},"PeriodicalIF":5.5,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740912","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":"Graphitic carbon nitride (g-C3N4)-based magnetic photocatalysts for removal of antibiotics","authors":"Akshay Verma,&nbsp;Gaurav Sharma,&nbsp;Tongtong Wang,&nbsp;Amit Kumar,&nbsp;Pooja Dhiman,&nbsp;Alberto García-Peñas","doi":"10.1007/s42823-024-00811-4","DOIUrl":"10.1007/s42823-024-00811-4","url":null,"abstract":"<div><p>The increasing presence of antibiotics in aquatic ecosystems has raised serious concerns about their ecological and human health impacts. In response, extensive research has focused on the degradation and removal of these stubborn pollutants. Among various approaches, heterogeneous photocatalysis has gained prominence due to its effectiveness in eliminating diverse contaminants from water. This method stands out for its cost-efficiency, environmental friendliness, and high performance, making it a practical solution for pollutant mitigation. Graphitic carbon nitride (g-C₃N₄) has attracted significant attention for developing advanced photocatalysts. Its non-metallic nature, robust stability, suitable electronic configuration, and favorable 2.7 eV band gap make it an excellent candidate. However, g-C₃N₄ faces challenges such as limited visible-light absorption, rapid charge recombination, low oxidation power, and poor texture, which hinder its photocatalytic efficiency. These issues can be addressed by developing g-C₃N₄-composite-based magnetic semiconductor photocatalysts possessing compatible energy bands. Integrating magnetic materials with g-C₃N₄ photocatalysts offers new possibilities for easy separation and recyclability, enhancing practical use. While previous studies have also detailed various modification methods for g-C₃N₄-based materials, the structure-performance relationships of g-C₃N₄, particularly for detecting and degrading antibiotics, need further exploration. This review critically examines the utilization of g-C₃N₄-based magnetic photocatalysts for antibiotic removal, exploring fabrication techniques, physical properties, and performance metrics. Various strategies to optimize their efficiency, including doping, heterojunction formation, and surface modification, are also covered. It also delves into the mechanisms of photocatalytic antibiotic degradation, addressing challenges and opportunities in developing these materials. Ultimately, we propose that the synergy of magnetic components into g-C₃N₄ not only represents a significant advancement in photocatalyst design but also opens new avenues for sustainable wastewater treatment technologies, demonstrating a high level of novelty in the field. The review provides valuable insights into current research and potential advancements in antibiotic remediation.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":506,"journal":{"name":"Carbon Letters","volume":"35 1","pages":"45 - 73"},"PeriodicalIF":5.5,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143513384","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":"Chemical dissolution of oxide layer on carbon steel SA 106 GR.B-based oxalic acid","authors":"Sion Kim,&nbsp;Kamal Asghar,&nbsp;Miguta Faustine Ngulimi,&nbsp;Bum Kyoung Seo,&nbsp;Changhyun Roh","doi":"10.1007/s42823-024-00808-z","DOIUrl":"10.1007/s42823-024-00808-z","url":null,"abstract":"<div><p>The feeder pipes of the primary cooling system in a pressurized heavy water reactor (PHWR) are composed of carbon steel SA 106 GR.B. On the surface of this structural material, corrosion oxide layers including radionuclides are formed due to the presence of active species from water decomposition products caused by radiation, as well as the high temperature and high-pressure environment. These oxide layers decrease the heat transfer efficiency of the primary cooling system and pose a risk of radiation exposure to workers and the environment during maintenance and decommissioning, making effective decontamination essential. In this study, we simulated the formation of the corrosion oxide layer on the surface of carbon steel SA 106 GR.B, characterized the formed corrosion oxide layer, and investigated the dissolution characteristics of the corrosion oxide layer using oxalic acid (OA), a commercial chemical decontamination agent. The corrosion oxide layer formed has a thickness of approximately 4 µm and consists of hematite (Fe₂O₃) and magnetite (Fe₃O₄). The carbon steel coupons with formed oxide layers were dissolved in 10 mM and 20 mM OA solutions, resulting in iron ion concentrations of 220 ppm and 276 ppm in the OA respectively. In 10 mM and 20 mM OA, the corrosion depths of the coupons were 8.93 µm and 10.22 µm, with corrosion rates of 0.39 mg/cm²·h and 0.45 mg/cm²·h, respectively. Thus, this demonstrates that higher OA concentrations lead to increased dissolution and corrosion of steel.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":506,"journal":{"name":"Carbon Letters","volume":"34 8","pages":"2223 - 2231"},"PeriodicalIF":5.5,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142256764","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":"Optimization of the TiO2 content and location in core–shell tubular carbon nanofibers to improve the photocatalytic activity under visible light irradiation","authors":"Bo-Hye Kim","doi":"10.1007/s42823-024-00813-2","DOIUrl":"10.1007/s42823-024-00813-2","url":null,"abstract":"<div><p>This study examines the effects of the TiO₂ content and TiO₂ position in the core or shell within tubular carbon nanofibers on the photocatalytic activity under visible light. Core–shell tubular carbon nanofiber composites whose cores are filled with TiO₂ nanoparticles (PMTi(10)P) are fabricated through coaxial electrospinning and subsequent heat treatment. The PMTi(10)P composites with well-preserved TiO₂ nanoparticles in the core part induce more oxygen vacancies, Ti³⁺ species, chemisorbed oxygen species, and anatase phases, significantly improving the photocatalytic performance. They act as photoelectron traps, allowing more photoelectrons and holes to participate in the photocatalytic reaction and extending the absorbance of TiO₂ to the visible light region. The resulting PMTi(10)P photocatalyst exhibits excellent performance of 100% removal of methylene blue within 30 min and maintains nearly 100% removal of 15 ppm methylene blue over 10 regeneration cycles, indicating consistent and stable photocatalytic performance.</p></div>","PeriodicalId":506,"journal":{"name":"Carbon Letters","volume":"34 8","pages":"2211 - 2221"},"PeriodicalIF":5.5,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142256762","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}