IF 10.5 2区材料科学

Carbon Pub Date : 2025-05-26 DOI: 10.1016/j.carbon.2025.120464

Ranran Huang , Hui Huang , Shentong Tao , Zhenyu Luo , Yujie Zhao , Linwei She , Jinjing Yang , Yingjie Lei , Qianfeng Li , Yang Liu , Zhenhui Kang , Wenli Zhang , Jian Huang

引用次数: 0

Investigation of anisotropic thermophysical properties of highly oriented carbon fiber composites: From one to three dimensions 高取向碳纤维复合材料各向异性热物理性能的研究：从一维到三维

IF 10.5 2区材料科学

Carbon Pub Date : 2025-05-26 DOI: 10.1016/j.carbon.2025.120477

Yanhui Zhang , Jie Yang , Xiaoyu Zhang , Rui Xu , Minsu Liu , Aoran Fan , Yingjun Liu , Jianli Wang , Xing Zhang

{"title":"Investigation of anisotropic thermophysical properties of highly oriented carbon fiber composites: From one to three dimensions","authors":"Yanhui Zhang , Jie Yang , Xiaoyu Zhang , Rui Xu , Minsu Liu , Aoran Fan , Yingjun Liu , Jianli Wang , Xing Zhang","doi":"10.1016/j.carbon.2025.120477","DOIUrl":"10.1016/j.carbon.2025.120477","url":null,"abstract":"<div><div>Highly oriented carbon fiber composites exhibit three-dimensional anisotropic thermophysical properties, making them candidates for thermal management applications. In this study, the thermal properties of highly oriented carbon fiber/epoxy resin (CF/ER) composites and their components were systematically investigated. The T-type probe method was employed to measure the pitch CF, while the 2ω method and the laser-spot-periodic-heating method were combined to characterize the E51-ER film and the composites. The impact of local fiber bending on heat transfer in the composites was also analyzed through finite element simulations. The results show that these composites exhibit high thermal conductivity along the fiber orientation with an anisotropy ratio of about 294. At different temperatures, the thermal conductivity along the fiber orientation is lower than the value predicted by the parallel model, while the conductivity in the other two directions is significantly higher than that predicted by the series model. Simulation results suggest that the bending of certain pitch CF can be a key factor contributing to this discrepancy.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"243 ","pages":"Article 120477"},"PeriodicalIF":10.5,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144184688","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Insight into structural-functional relationship for conductive-radiative heat transfer in multi-scale thermal insulating carbon aerogels 多尺度隔热碳气凝胶中传导-辐射传热的结构-功能关系研究

IF 10.5 2区材料科学

Carbon Pub Date : 2025-05-24 DOI: 10.1016/j.carbon.2025.120467

Jia-Peng Dai , Xiang Liu , Dong Li

{"title":"Insight into structural-functional relationship for conductive-radiative heat transfer in multi-scale thermal insulating carbon aerogels","authors":"Jia-Peng Dai , Xiang Liu , Dong Li","doi":"10.1016/j.carbon.2025.120467","DOIUrl":"10.1016/j.carbon.2025.120467","url":null,"abstract":"<div><div>The randomness in the porous structure of carbon aerogels makes them excellent thermal insulators. This study investigates heat transfer and structural-functional relationships in carbon aerogels. A database containing multi-scale structures derived from various experiments has been constructed, and a model that integrates molecular dynamics, lattice Boltzmann method, and discrete dipole approximation is proposed to explore cross-scale heat conduction and radiation. The results indicate that the density and medium-range order of microscale structures are critical factors influencing temperature-dependent thermal conductivities. The increase in thermal conductivity from 273 K to 1273 K is attributed to the excitation of vibrations with frequencies exceeding 16 THz. For aerogels characterized by low medium-range order atomic structures, thermal conductivity rises at temperatures above 1673 K due to further graphitization. Mesoporosity emerges as the primary determinant of aerogel thermal conductivity at the mesoscale, exhibiting an approximately linear relationship with thermal conductivity. Despite high temperatures, radiation remains a minor contributor to heat transfer. Regulating aerogel structures based on differential influences of multi-scale porosity can effectively reduce their thermal conductivities. For lowly graphitized aerogels, this involves decreasing microscale density, while for highly graphitized aerogels, controlling their microscale density under 1.6 g·cm<sup>−3</sup> can suppress the medium-range order of carbon atoms.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"243 ","pages":"Article 120467"},"PeriodicalIF":10.5,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144168167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Achieving high-performance flexible UV photodetectors: modulating oxygen vacancies via hydroxymethylated PEDOT and surface functionalities of N-doped graphene quantum dots 实现高性能柔性紫外光电探测器：通过羟基化PEDOT和n掺杂石墨烯量子点的表面功能调制氧空位

IF 10.5 2区材料科学

Carbon Pub Date : 2025-05-24 DOI: 10.1016/j.carbon.2025.120470

Yajun Wang , Tursun Abdiryim , Ruxangul Jamal , Feng Xu , Qilong Zhang , Yiming Liu

引用次数: 0

Density regulation of surface hydroxyl on porous carbons as efficient catalytic supports 多孔碳表面羟基作为高效催化载体的密度调节

IF 10.5 2区材料科学

Carbon Pub Date : 2025-05-24 DOI: 10.1016/j.carbon.2025.120469

Ruihong Wang, Yuenan Zheng, Lu Hou, Wen-Cui Li, An-Hui Lu

{"title":"Density regulation of surface hydroxyl on porous carbons as efficient catalytic supports","authors":"Ruihong Wang, Yuenan Zheng, Lu Hou, Wen-Cui Li, An-Hui Lu","doi":"10.1016/j.carbon.2025.120469","DOIUrl":"10.1016/j.carbon.2025.120469","url":null,"abstract":"<div><div>Oxygen-containing functional groups play a crucial role in anchoring active metals on supported catalysts, especially hydroxyl groups, which hold advantages in regulating the electronic structure and optimizing the dispersion of metal species through their lone electron pairs. However, the coexistence of various oxygen-containing groups (e.g., C<img>O, C–<em>O</em>–C, C–OH) on carbon support is intractable in identifying the role of hydroxyl groups and revealing structure-activity relationships in the construction of effective supported catalysts. Herein, we established a regulation method for enriching hydroxyl groups of porous carbons by selective removal of ether oxygen-containing species via Diels-Alder (DA) reaction. This results in an increase in the proportion of hydroxyl from 30 % up to 54 %. The high proportion of hydroxyl on the obtained sample ET(200)-Air-HCM serves as an effective site for anchoring Pd species, thus leading to high dispersion of Pd nanoparticles featuring Pd<sup>2+</sup> with an electron-deficient state. The highly dispersed Pd<sup>2+</sup> species provides abundant active sites for the selective oxidation of benzyl alcohol with 99.7 % conversion and 99.6 % selectivity of benzaldehyde attained over Pd@ET(200)-Air-HCM at 363 K and 1 atm oxygen atmosphere. This study offers a facile method for the selective regulation of the proportion of hydroxyl groups on porous carbon-based materials for catalysis applications.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"242 ","pages":"Article 120469"},"PeriodicalIF":10.5,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144130998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Facile one-pot synthesis of metal and non-metal doped g-C3N4 photocatalyst for rapid acetaminophen remediation 一锅合成金属与非金属掺杂g-C3N4光催化剂对乙酰氨基酚的快速修复

IF 10.5 2区材料科学

Carbon Pub Date : 2025-05-24 DOI: 10.1016/j.carbon.2025.120472

Muhammad Ikram Nabeel , Dilshad Hussain , Naseer Ahmad , Hua-Ming Xiao , Waqas Ahmad , Syed Ghulam Musharraf

{"title":"Facile one-pot synthesis of metal and non-metal doped g-C3N4 photocatalyst for rapid acetaminophen remediation","authors":"Muhammad Ikram Nabeel , Dilshad Hussain , Naseer Ahmad , Hua-Ming Xiao , Waqas Ahmad , Syed Ghulam Musharraf","doi":"10.1016/j.carbon.2025.120472","DOIUrl":"10.1016/j.carbon.2025.120472","url":null,"abstract":"<div><div>In this study, porous diatomic metal and nonmetal doped graphitic carbon nitride (g-C<sub>3</sub>N<sub>4</sub>) were synthesized through a one-pot calcination method and used for acetaminophen (ACM) remediation. TeSC<sub>3</sub>N<sub>4</sub> and SrSC<sub>3</sub>N<sub>4</sub>, prepared by doping sulfur, tellurium and strontium, showed enhanced photodegradation of acetaminophen compared to pristine g-C<sub>3</sub>N<sub>4</sub> and SC<sub>3</sub>N<sub>4</sub>. Among these materials, TeSC<sub>3</sub>N<sub>4</sub>-2 exhibited a degradation rate of 99 %, significantly higher than SrSC<sub>3</sub>N<sub>4</sub>-2, which showed 95 % degradation in 70 min under visible light irradiation. The reaction kinetics for both materials followed pseudo-first-order model (TeSC<sub>3</sub>N<sub>4</sub>-2, R<sup>2</sup> = 0.989, 0.0396 min<sup>−1</sup>, t<sub>1/2</sub> = ln2/k 17.5 min, and SrSC<sub>3</sub>N<sub>4</sub>-2, R<sup>2</sup> = 0.988, 0.0332 min<sup>−1</sup>, t<sub>1/2</sub> = ln2/k 20.8 min). TeSC<sub>3</sub>N<sub>4</sub>-2 and SrSC<sub>3</sub>N<sub>4</sub>-2 were also used for the degradation of multiple pollutants, and the results showed that methyl orange and congo red were degraded up to 99 %. TOC analysis revealed 95 % removal by TeSC<sub>3</sub>N<sub>4</sub>-2 and 88 % by SrSC<sub>3</sub>N<sub>4</sub>-2. Several scavengers were utilized to determine the reactive species in the ACM degradation process, and O<sub>2</sub><sup>•-</sup> was found to be the main reactive species. Liquid chromatography mass spectrometry (LC-MS) was employed to monitor drug intermediate formation and degradation pathways, providing detailed insights into the degradation process. This study emphasized the high efficiency of catalysts for multiple pollutants degradation and their environmental friendliness, underscoring their potential applications in eco-friendly water treatment.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"243 ","pages":"Article 120472"},"PeriodicalIF":10.5,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144168170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Unveiling electronic effects of Brønsted acid substituents in AlCl3-based superacids: Key role in pitch-based mesophase development 揭示基于alcl3的超强酸中Brønsted酸取代基的电子效应：沥青基中间相发展的关键作用

IF 10.5 2区材料科学

Carbon Pub Date : 2025-05-23 DOI: 10.1016/j.carbon.2025.120465

Wensheng Chen, Chunfeng Duan, Renlu Yuan, Zhaokun Ma, Xiaohong Chen, Huaihe Song

{"title":"Unveiling electronic effects of Brønsted acid substituents in AlCl3-based superacids: Key role in pitch-based mesophase development","authors":"Wensheng Chen, Chunfeng Duan, Renlu Yuan, Zhaokun Ma, Xiaohong Chen, Huaihe Song","doi":"10.1016/j.carbon.2025.120465","DOIUrl":"10.1016/j.carbon.2025.120465","url":null,"abstract":"<div><div>The Lewis acid-catalyzed pyrolysis is crucial for producing mesophase pitch with high aromaticity and superior molecular orientation. While AlCl<sub>3</sub> has long been employed as a catalyst in mesophase pitch synthesis, previous studies have largely overlooked the essential role of Brønsted acids in forming Lewis-Brønsted superacid systems that provide the active catalytic centers. To fully activate the catalytic potential of AlCl<sub>3</sub>, this study focuses on the impact of the electronic effects of various Brønsted acid (alcohols, water, carboxylic acids, and amides) substituents on catalytic performance. The characterization results demonstrate that Brønsted acids with strong electron-withdrawing groups and conjugated structures significantly enhance the catalytic performance, with cyanoacetic acid identified as the optimal candidate. Kinetic analysis reveals that cyanoacetic acid reduces the reaction activation energy by up to 6 kJ/mol compared to other Brønsted acids. The observed trends in activation energy and mesophase sphere size evolution align well with the electronic nature of Brønsted acid substituents. Furthermore, the superacid ratio critically determines mesophase morphology and carbonized sample properties. Insufficient Brønsted acid reduces active centers and polymerization rates, while excess acid increases counterion concentration, accelerating termination and suppressing polymerization. The bulk-type texture mesophase with 96.91 % anisotropic content was prepared only at the optimal cyanoacetic acid addition of 40 mol%. This study establishes a clear structure-activity relationship between Brønsted acid substituents and superacid catalytic efficiency, providing a rational approach for catalyst selection and optimization in mesophase pitch preparation.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"242 ","pages":"Article 120465"},"PeriodicalIF":10.5,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144130999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Aligning graphene sheets in aerogel-based composites for enhanced electromagnetic interference absorption 在气凝胶基复合材料中对齐石墨烯片以增强电磁干扰吸收

IF 10.5 2区材料科学

Carbon Pub Date : 2025-05-23 DOI: 10.1016/j.carbon.2025.120463

Ji Hun Seo , Hyun Seong Yang , Min Ho Seo , Seon Joon Kim , Juyun Lee , Seyoung Kee , Saeed Habibpour , Sung-Nam Lim , Wook Ahn , Yun-Seok Jun

{"title":"Aligning graphene sheets in aerogel-based composites for enhanced electromagnetic interference absorption","authors":"Ji Hun Seo , Hyun Seong Yang , Min Ho Seo , Seon Joon Kim , Juyun Lee , Seyoung Kee , Saeed Habibpour , Sung-Nam Lim , Wook Ahn , Yun-Seok Jun","doi":"10.1016/j.carbon.2025.120463","DOIUrl":"10.1016/j.carbon.2025.120463","url":null,"abstract":"<div><div>This study investigates graphene aerogel-based polydimethylsiloxane (PDMS) composites designed to improve electromagnetic interference (EMI) absorption. These composites are fabricated by infiltrating PDMS into graphene aerogel produced by uni-directional freezing and thermal reduction. This results in a graphene structure with highly aligned orientations. The composites in longitudinal directions exhibit a shielding effectiveness by absorption (SE<sub>A</sub>) of 8.6 dB/mm and a shielding effectiveness by total (SE<sub>T</sub>) of 11.5 dB/mm in 8.2–12.4 (X-band) frequency range. On the other hand, the transverse direction shows a lower EMI shielding capability with a SE<sub>A</sub> of 4.5 dB/mm and a SE<sub>T</sub> of 6.7 dB/mm. These are attributed to the fact that the aligned orientation of the fillers increased the internal multiple scattering of incident electromagnetic wave, which increases the propagation path and energy attenuation. These results demonstrate that controlling the filler orientation can significantly increase the EMI performances of graphene/PDMS composites.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"242 ","pages":"Article 120463"},"PeriodicalIF":10.5,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144139702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Interface engineering optimization: in-situ growth NiZn/carbon aerogel composite for high-performance microwave absorption 界面工程优化：原位生长NiZn/碳气凝胶复合材料用于高性能微波吸收

IF 10.5 2区材料科学

Carbon Pub Date : 2025-05-23 DOI: 10.1016/j.carbon.2025.120459

Luwei Shao , Xiaoying Li , Yuqi Wang , Gangfeng Xia , Feiyue Fan , Chunchuan Pei , Guangbin Ji

{"title":"Interface engineering optimization: in-situ growth NiZn/carbon aerogel composite for high-performance microwave absorption","authors":"Luwei Shao , Xiaoying Li , Yuqi Wang , Gangfeng Xia , Feiyue Fan , Chunchuan Pei , Guangbin Ji","doi":"10.1016/j.carbon.2025.120459","DOIUrl":"10.1016/j.carbon.2025.120459","url":null,"abstract":"<div><div>Simultaneously achieving radar-infrared compatibility and multi-environment adaptability in a single material poses significant challenges. By amplifying interface effects, this study proposes a composite carbon aerogel design strategy based on multiscale interface engineering and conductive network reconstruction. This study constructed a 3D hierarchical heterostructures of MOF@aramid fiber-chitosan carbon sheets by inducing in situ directed growth of bimetallic MOF on the surface of aramid fibers via amino ligand, and systematically investigated the synergistic wave-absorption as well as thermal insulation mechanism. The results demonstrate that at a relatively thin thickness, the optimal reflection loss (RL<sub>min</sub>) reaches −65.69 <span><span><span>[email protected]</span></span><svg><path></path></svg></span> GHz with a maximum effective absorption bandwidth (EAB<sub>max</sub>) of 6.32 GHz. Notably, the simulated sample's radar cross-section (RCS) value shows a 24.67 dB m<sup>2</sup> reduction compared to the perfect electric conductor (PEC). Furthermore, the samples demonstrated exceptional thermal management capability, hydrophobicity, and corrosion resistance.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"242 ","pages":"Article 120459"},"PeriodicalIF":10.5,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144139701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Amino-functionalized graphene oxide nanocomposite as an efficient catalyst for the conversion of CO2 into oxazolidinone derivatives via a cascade reaction 氨基功能化氧化石墨烯纳米复合材料作为级联反应将二氧化碳转化为恶唑烷酮衍生物的有效催化剂

IF 10.5 2区材料科学

Carbon Pub Date : 2025-05-22 DOI: 10.1016/j.carbon.2025.120451

Maryam Mirza-Aghayan, Mahdi Alizadeh

{"title":"Amino-functionalized graphene oxide nanocomposite as an efficient catalyst for the conversion of CO2 into oxazolidinone derivatives via a cascade reaction","authors":"Maryam Mirza-Aghayan, Mahdi Alizadeh","doi":"10.1016/j.carbon.2025.120451","DOIUrl":"10.1016/j.carbon.2025.120451","url":null,"abstract":"<div><div>In this study, we present the functionalization of graphene oxide (GO) with 3-quinuclidinol (Qu) to create an amino-functionalized graphene oxide nanocomposite (GO-Qu) as a basic catalyst and its application in a cascade reaction for the synthesis of oxazolidinone compounds <em>via</em> a carboxylative cyclization method. The GO-Qu nanocomposite was synthesized from the functionalization of GO with 3-quinuclidinol and was entirely characterized using techniques such as energy dispersive spectroscopy (EDS), scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier-transform infrared (FT-IR) spectroscopy, and thermogravimetric analysis (TGA). The catalytic activity of the GO-Qu nanocomposite was evaluated in a cascade reaction involving a self-condensation reaction of a primary amine compound in the first stage, followed by the synthesis of the oxazolidinone product in the second stage through the addition of an arylacetylene derivative. This cascade reaction was carried out using the GO-Qu nanocomposite as a basic catalyst in the presence of CuI as a co-catalyst under solvent-free conditions. Initially, the self-condensation reaction of amine derivatives was performed under a dry air atmosphere (using a balloon) at 100<sup>ο</sup>C, yielding imine intermediate compounds. Subsequently, this cascade reaction continued with the addition of arylacetylene to this mixture under an atmospheric pressure of CO<sub>2</sub> gas (using a balloon) at 100<sup>ο</sup>C. The corresponding oxazolidinone compounds were obtained with good to high yield (70-95 %) after 24 h. The reusability investigation of the GO-Qu nanocomposite showed that it could be recovered and recycled for five runs without a significant reduction in its catalytic activity.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"242 ","pages":"Article 120451"},"PeriodicalIF":10.5,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144169456","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

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