Carbon最新文献 - Book学术

Flexible multifunctional MXene/SWCNTs composite films with excellent infrared stealth, electromagnetic interference shielding and electrical heating properties

IF 10.5 2区材料科学

Carbon Pub Date : 2025-04-07 DOI: 10.1016/j.carbon.2025.120303

Nan Pang , Xiao Cheng , Yanyan Wang , Xiaoqing Yin , Xiangwei Meng , Meijie Yu , Siyu Liu , Chuanjian Zhou

{"title":"Flexible multifunctional MXene/SWCNTs composite films with excellent infrared stealth, electromagnetic interference shielding and electrical heating properties","authors":"Nan Pang , Xiao Cheng , Yanyan Wang , Xiaoqing Yin , Xiangwei Meng , Meijie Yu , Siyu Liu , Chuanjian Zhou","doi":"10.1016/j.carbon.2025.120303","DOIUrl":"10.1016/j.carbon.2025.120303","url":null,"abstract":"<div><div>Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> MXene, known for its high electrical conductivity and low infrared emissivity, has become a research hotspot in infrared stealth, thermal management and electromagnetic shielding. However, reduced emissivity hampers heat dissipation through thermal radiation, leading to heat accumulation that can elevate temperature and affect performance, lifespan, or detectability. This highlights the necessity of integrating thermal management materials to ensure effective heat dissipation and stealth performance. In this study, MXene was utilized as a low-emissivity matrix material, while SWCNTs were incorporated to enhance thermal management. By optimizing their ratio and interfacial bonding, the MSC-3 film was obtained, exhibiting high conductivity (83000 S/m), low emissivity (0.176), and anisotropic thermal conductivity. The film effectively reduces the radiative temperature of a high-temperature target (311.6 °C) by 207.3 °C, demonstrating significant high-temperature infrared stealth performance. Additionally, this study reveals key factors affecting infrared emissivity of composite films, offering valuable insights into optimizing surface structure and stealth performance. The film also demonstrates enhanced tensile strength, an EMI shielding effectiveness of 63.3 dB, and excellent electric heating performance (2 V, 359 °C), making it suitable for dynamic infrared stealth applications. This work offers important insights into designing multifunctional flexible infrared stealth films.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"238 ","pages":"Article 120303"},"PeriodicalIF":10.5,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143799040","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

Reversible Covalent Bond Assisted Plastic-stretching: a strategy towards Graphene Oxide Films with Superior Modulus

IF 10.5 2区材料科学

Carbon Pub Date : 2025-04-05 DOI: 10.1016/j.carbon.2025.120300

Jun Chen , Peng He , Dongguang Xu , Yiwei Quan , Siwei Yang , Guqiao Ding

{"title":"Reversible Covalent Bond Assisted Plastic-stretching: a strategy towards Graphene Oxide Films with Superior Modulus","authors":"Jun Chen , Peng He , Dongguang Xu , Yiwei Quan , Siwei Yang , Guqiao Ding","doi":"10.1016/j.carbon.2025.120300","DOIUrl":"10.1016/j.carbon.2025.120300","url":null,"abstract":"<div><div>Efforts to obtain Graphene Oxide (GO) films with high mechanical properties have been frustrated by the misalignment of GO sheets and wrinkles in the films. While plastic-stretching GO films can improve the alignment of GO sheets and flatten the wrinkles, the misalignment and wrinkles regenerate after stretch release because of the weak and unstable interaction between GO sheets. In this work, high-strength covalent bonds (C-O-B) are introduced between GO sheets to maintain the stretch-induced orientation of GO sheets. After optimization, the fracture strength and Young’s modulus were respectively improved by 24.3% and 110.3% to 167.3 MPa and 108.1 GPa. Moreover, the as-prepared films exhibit only a marginal property degradation in harsh environments (85°C, 85% relative humidity, 96h) when applied a thin Polyurethane coating on the surface to prevent the hydrolysis of C-O-B covalent bond, which demonstrates the potential for practical applications. This new strategy is expected to extend the processing capability and enhance the mechanical properties of other laminated materials such as graphene, black phosphorus, MXene, and so on.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"238 ","pages":"Article 120300"},"PeriodicalIF":10.5,"publicationDate":"2025-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143792056","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

Constructing bioinspired mineralization interface between carbon fiber and epoxy coating with robust anti-corrosion and anti-erosion performances

IF 10.5 2区材料科学

Carbon Pub Date : 2025-04-05 DOI: 10.1016/j.carbon.2025.120302

Lu Shen , Lijing Miao , Yuhan Zhang , Yichen Zhao , Weiping Xie , Xiaoshu Lu , Kui Wang , Wenjie Zhao

{"title":"Constructing bioinspired mineralization interface between carbon fiber and epoxy coating with robust anti-corrosion and anti-erosion performances","authors":"Lu Shen , Lijing Miao , Yuhan Zhang , Yichen Zhao , Weiping Xie , Xiaoshu Lu , Kui Wang , Wenjie Zhao","doi":"10.1016/j.carbon.2025.120302","DOIUrl":"10.1016/j.carbon.2025.120302","url":null,"abstract":"<div><div>The extremely intricate deep-sea environment, characterized by elevated hydrostatic pressure, low temperatures, and low diminished dissolved oxygen levels, poses great challenges to the long-term corrosion resistance of steel structures serving in the deep sea. Carbon fiber (CF)-reinforced composites are applied in more domains owing to CF's amazing mechanical strength, chemical stability, corrosion resistance, and high thermal conductivity (TC). Nevertheless, the protective efficacy of CF-reinforced composites in harsh oceanic environments is constrained due to the inadequate interfacial bonding strength between CFs and polymers. Here, a bioinspired mineralized layer (Ca<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub>) was constructed on CFs (M − CF) via in-situ growth method, which markedly improved the interfacial adhesion strength between CFs and epoxy resin. In comparison, the tensile strength, which increased by 79.8 % relative to EP, and interfacial shear strength, which rose by 73.6 % compared with CF/EP, were most pronounced in the case of M-CF/EP. The bioinspired mineralized layer on CFs provided exceptional corrosion resistance and anti-erosion properties to the composite coating. The findings of the erosion studies indicated that the mass loss and volume loss of M-CF/EP were just 182.3 mg and 165.2 mm<sup>3</sup>, respectively. The M-CF/EP coating exhibited a TC of 0.75 W m<sup>−1</sup> K<sup>−1</sup>, which greatly surpassed that of other coatings. Finally, the protective mechanism of the coatings were analyzed, and the interfacial failure processes induced by the effect of SiC particles were discussed.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"238 ","pages":"Article 120302"},"PeriodicalIF":10.5,"publicationDate":"2025-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143791968","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

Grafting-through functionalization of graphene oxide with cationic polymers for enhanced adsorption of anionic dyes and viruses

IF 10.5 2区材料科学

Carbon Pub Date : 2025-04-04 DOI: 10.1016/j.carbon.2025.120296

Ryota Kimura , Pilar Ferré-Pujol , Yuta Nishina

{"title":"Grafting-through functionalization of graphene oxide with cationic polymers for enhanced adsorption of anionic dyes and viruses","authors":"Ryota Kimura , Pilar Ferré-Pujol , Yuta Nishina","doi":"10.1016/j.carbon.2025.120296","DOIUrl":"10.1016/j.carbon.2025.120296","url":null,"abstract":"<div><div>Graphene oxide (GO) is a sheet-like carbon material with abundant oxygen-containing functional groups on its surface. GO has been extensively studied as an adsorbent for heavy metals and organic compounds. However, effective strategies for negatively charged materials have yet to be established. This study aimed to synthesize composites of GO and cationic polymers for the selective adsorption of negatively charged materials; a challenge in this approach is the strong electrostatic interactions between GO and cationic polymers, which can lead to aggregation. This study addresses this issue by employing the grafting-through method. GO was initially modified with allylamine to introduce a polymerizable site, followed by radical polymerization to covalently bond polymers to the GO surface, effectively preventing aggregation. Adsorption experiments demonstrated that the GO-polymer composite selectively adsorbs anionic dye, such as methyl orange. Virus adsorption tests showed significantly enhanced performance compared to pristine GO. These results emphasize the critical role of controlled surface modification and charge manipulation in optimizing the adsorption performance of GO. This study establishes a simple and effective approach for synthesizing GO-cationic polymer composites, contributing to the development of advanced materials for water purification applications.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"238 ","pages":"Article 120296"},"PeriodicalIF":10.5,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143799039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Understanding the growth of carbon dots derived from bioresources via plasma-electrified synthesis

IF 10.5 2区材料科学

Carbon Pub Date : 2025-04-04 DOI: 10.1016/j.carbon.2025.120278

Muhammad Hussnain Akmal , Darwin Kurniawan , Neha Sharma , Wei-Hung Chiang

{"title":"Understanding the growth of carbon dots derived from bioresources via plasma-electrified synthesis","authors":"Muhammad Hussnain Akmal , Darwin Kurniawan , Neha Sharma , Wei-Hung Chiang","doi":"10.1016/j.carbon.2025.120278","DOIUrl":"10.1016/j.carbon.2025.120278","url":null,"abstract":"<div><div>Carbon dots (CDs) have been the forefront of materials research owing to their unique size-dependent quantum confinement and carbon hybridization state-dependent physicochemical properties, rendering them useful for many applications, including imaging, sensing, energy conversion and storage, optoelectronics, and nanocatalysis. However, precise atomic-scale control of CDs with well-defined structures and properties is still challenging owing to inefficient synthesis methods and limited understanding of their growth mechanisms. Here, we utilize a direct current (DC) microplasma electrochemical reactor to convert various bioresources into CDs with controlled structures and carbon hybridization states in a rapid, catalyst-free, and environmentally friendly manner. Moreover, <em>in situ</em> optical emission and absorption spectroscopies were further integrated into the microplasma reactor to reveal growth mechanisms, providing a possible prediction over the synthesized products without time-consuming <em>ex situ</em> characterization. A high plasma current enhanced the ionization rate, which subsequently led to more water dissociation into OH radicals, more precursor fragmentation, and therefore higher CDs production. Our work provides insight into the synthesis of bioresource-derived CDs between the plasma parameters and structural properties of the synthesized CDs.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"238 ","pages":"Article 120278"},"PeriodicalIF":10.5,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143785195","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

Local strain induced nanoscale double-wrinkles in graphene realized by STM tip-directed sliding

IF 10.5 2区材料科学

Carbon Pub Date : 2025-04-04 DOI: 10.1016/j.carbon.2025.120299

Yuang Li, Xueyan Li, Jiaqi Yang, Yi Pan

{"title":"Local strain induced nanoscale double-wrinkles in graphene realized by STM tip-directed sliding","authors":"Yuang Li, Xueyan Li, Jiaqi Yang, Yi Pan","doi":"10.1016/j.carbon.2025.120299","DOIUrl":"10.1016/j.carbon.2025.120299","url":null,"abstract":"<div><div>Creating nano-scale wrinkles in graphene by strain engineering is an effective strategy to introduce exotic electronic and optoelectronic properties into the material. However, it's challenging to realize atomic precision local strain at specific locations on the surface. Herein, we report on a local strain engineering approach to building nano-wrinkles by scanning tunneling microscope (STM) tip-directed sliding of the monolayer graphene on highly ordered pyrolytic graphite (HOPG). Unique parallel double wrinkles are formed due to the sliding caused displacement being locked by the instantly formed bonds at the edge. They can also be removed by applying a voltage pulse to release the edge locking. Scanning tunning spectra reveals typical 1D quantum characteristics of van Hove singularity peaks on the wrinkles, while fast Fourier transform (FFT) analysis of high-resolution image reveals intralayer lattice distortion and interlayer twisting caused by anisotropic residual tensile and compressive stresses in the vicinity of the wrinkles. Additionally, structural kinks on the wrinkles have been created by controlled tip contact, which induces local Kekulé bond order near the kink due to the tensile stress breaking the bond symmetry of graphene. Our work provides a new technique to realize desired physical properties via local strain engineering of layered 2D materials.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"238 ","pages":"Article 120299"},"PeriodicalIF":10.5,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143785192","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

Graphite recovery and synthesis of graphene oxide from end-of-life Li-ion batteries: Impact of thermal, mechanical, and mechanochemical pretreatments 从报废锂离子电池中回收石墨并合成氧化石墨烯：热、机械和机械化学预处理的影响

IF 10.5 2区材料科学

Carbon Pub Date : 2025-04-03 DOI: 10.1016/j.carbon.2025.120295

Pier Giorgio Schiavi , Ludovica D'Annibale , Andrea Giacomo Marrani , Francesco Amato , Olga Russina , Silvia Iacobelli , Francesco Mura , Raphael Sieweck , Francesca Pagnanelli , Pietro Altimari

{"title":"Graphite recovery and synthesis of graphene oxide from end-of-life Li-ion batteries: Impact of thermal, mechanical, and mechanochemical pretreatments","authors":"Pier Giorgio Schiavi , Ludovica D'Annibale , Andrea Giacomo Marrani , Francesco Amato , Olga Russina , Silvia Iacobelli , Francesco Mura , Raphael Sieweck , Francesca Pagnanelli , Pietro Altimari","doi":"10.1016/j.carbon.2025.120295","DOIUrl":"10.1016/j.carbon.2025.120295","url":null,"abstract":"<div><div>This study investigates how common pretreatments for recovering black mass from end-of-life (EoL) electric vehicle (EV) lithium-ion batteries (LIBs) influence graphene oxide (GO) synthesis. Black mass was obtained through (i) industrial-scale carbothermal reduction of whole EV battery packs, (ii) industrial-scale mechanical processing, and (iii) lab-scale mechanochemical treatment via reactive ball milling. Characterizations assessed the impact of these pretreatments, along with conventional acid leaching, on graphite properties such as interlayer spacing, oxidation degree, and defectivity—key factors for potential anode reuse. The mechanochemically treated sample achieved an outstanding GO yield of 92 %, whereas other black masses reached up to 30 %. GO yields were further analysed using the Hummers’ method after acid leaching for metal removal. This approach enhanced yields, reaching 96 % for the mechanochemically treated sample and up to 46 % for the others. The improvements were attributed to reduced reagent consumption and the partial exfoliation and oxidation of graphite during leaching. Additionally, lithium intercalation/deintercalation during battery cycling increased GO yield compared to commercial pristine graphite. These findings highlight mechanochemical pretreatment as a promising strategy to integrate high-yield GO production into LIB recycling workflows.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"238 ","pages":"Article 120295"},"PeriodicalIF":10.5,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143784070","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Building a multi-performance wearable rubber-based strain sensor: for human motion capture, optical heating and underwater sensing

IF 10.5 2区材料科学

Carbon Pub Date : 2025-04-03 DOI: 10.1016/j.carbon.2025.120274

Mengnan Qu , Menglin Zhu , Qinghua Liu , Jiehui Li , Yuhang Gao , Jin Zhang , Mengge Cao , Xiao Wei , Jinmei He

{"title":"Building a multi-performance wearable rubber-based strain sensor: for human motion capture, optical heating and underwater sensing","authors":"Mengnan Qu , Menglin Zhu , Qinghua Liu , Jiehui Li , Yuhang Gao , Jin Zhang , Mengge Cao , Xiao Wei , Jinmei He","doi":"10.1016/j.carbon.2025.120274","DOIUrl":"10.1016/j.carbon.2025.120274","url":null,"abstract":"<div><div>Flexible and stretchable strain sensors have become the main candidates for wearable human devices in recent years. However, existing strain sensors often neglect the multi-performance development and the challenges in practical applications. In this study, based on the concept of environmental protection and multi-faceted material performance, the composite film was fabricated using water as the solvent, incorporating high elasticity of natural rubber latex (NR), multi-walled carbon nanotubes (MWCNTs), and silver nanowires (AgNWs). This rubber-based composite film was subsequently subjected to hydrophobic modification through the spraying of a mixed solution of polydimethylsiloxane (PDMS) and silicon dioxide (SiO<sub>2</sub>). Ultimately, a hydrophobic flexible NR/MWCNTs@AgNWs strain sensor was obtained, which exhibited high sensitivity (GF = 3.64), excellent linearity (R<sup>2</sup> = 0.99), a broad monitoring range (0–200 %), rapid response capability (128 ms), and good durability (10,000 s cycles). More importantly, due to the photothermal conversion properties of MWCNTs and AgNWs, this hydrophobic flexible sensor is not only used for human motion monitoring and underwater sensing, but also has broad application prospects in optical heating in cold environments and thermal therapy for human joint diseases. This design has opened up a new path for the development of multifunctional wearable devices.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"238 ","pages":"Article 120274"},"PeriodicalIF":10.5,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143785193","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

In-situ growth of MoO2/MoS2 microspheres on reduced graphene oxide with enhanced dielectric polarization and impedance matching for boosting electromagnetic wave absorption

IF 10.5 2区材料科学

Carbon Pub Date : 2025-04-03 DOI: 10.1016/j.carbon.2025.120298

Yiman Lu, Xiaoning Zhao, Ya Lin, Zhongqiang Wang, Ye Tao, Haiyang Xu, Yichun Liu

{"title":"In-situ growth of MoO2/MoS2 microspheres on reduced graphene oxide with enhanced dielectric polarization and impedance matching for boosting electromagnetic wave absorption","authors":"Yiman Lu, Xiaoning Zhao, Ya Lin, Zhongqiang Wang, Ye Tao, Haiyang Xu, Yichun Liu","doi":"10.1016/j.carbon.2025.120298","DOIUrl":"10.1016/j.carbon.2025.120298","url":null,"abstract":"<div><div>Dielectric materials are promising candidates for electromagnetic wave (EMW) absorption due to the significant contribution of dielectric loss to EM energy dissipation. However, dielectric materials with single component usually exhibit limited EMW absorption performance because of their impedance mismatching and insufficient EMW attenuation capability. Reasonable designs of structure and composition are required to improve their EMW absorption performance. Herein, the rGO/MoO<sub>2</sub>/MoS<sub>2</sub> (RMM) composite with MoO<sub>2</sub>/MoS<sub>2</sub> heterogeneous microspheres grown in situ on reduced graphene oxide (rGO) is prepared through intermolecular hydrogen bonding and thermal reduction. The introduction of MoO<sub>2</sub>/MoS<sub>2</sub> microspheres not only endows the composite with abundant mesopores and large specific surface area, but also facilitates the formation of heterogeneous interfaces and structural defects. By manipulating the relative component content of MoO<sub>2</sub> and MoS<sub>2</sub>, RMM achieves excellent EMW absorption. At a relatively thin thickness of 1.70 mm, the reflection loss (RL) and effective absorption bandwidth of the composite reach −74.81 dB and 4.37 GHz. Correspondingly, the specific RL (RL/t) of the composite comes to −440.06 dB/cm, which is at the forefront among other typical dielectric microwave absorbers. This work provides a universal strategy to develop high-performance dielectric-type EMW absorption materials.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"238 ","pages":"Article 120298"},"PeriodicalIF":10.5,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143785194","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

Growing single-walled carbon nanotubes from alumina sheet supported catalyst and investigating carrier effects on chirality distribution

IF 10.5 2区材料科学

Carbon Pub Date : 2025-04-02 DOI: 10.1016/j.carbon.2025.120279

Qianru Wu , Xin Chi , Xiaojing Yao , Guodong Xu , Xiuyun Zhang , Kezheng Chen , Guangyi Lin , Maoshuai He

{"title":"Growing single-walled carbon nanotubes from alumina sheet supported catalyst and investigating carrier effects on chirality distribution","authors":"Qianru Wu , Xin Chi , Xiaojing Yao , Guodong Xu , Xiuyun Zhang , Kezheng Chen , Guangyi Lin , Maoshuai He","doi":"10.1016/j.carbon.2025.120279","DOIUrl":"10.1016/j.carbon.2025.120279","url":null,"abstract":"<div><div>Both the structure and type of support material significantly influence the performances of supported metal catalyst in synthesizing single-walled carbon nanotubes (SWNTs) through chemical vapor deposition. In this work, thin porous boehmite sheets prepared by hydrothermal method are applied as the precursor carriers for developing a supported iron catalyst. Upon high temperature calcination, the resulting alumina (α-Al<sub>2</sub>O<sub>3</sub>) and Fe<sub>2</sub>O<sub>3</sub> form a solid solution, which catalyzes the growth of SWNTs at a low temperature of 700 °C. Detailed optical characterizations reveal that mainly subnanometer SWNTs with a narrow chirality distribution are synthesized. To explore the roles of catalyst support in catalysis, a magnesia (MgO) supported Fe catalyst is also designed. The MgO supported catalyst achieves an even narrower chirality distribution compared to the alumina-supported counterpart. By combining experimental catalyst characterizations with theoretical calculations, the SWNT chirality distribution is revealed to be highly sensitive to the surface basicity of the support materials. The strong basicity of the MgO facilitates electron transfer to the supported Fe nanoparticles, enhancing the adsorption and dissociation of the carbon precursor. This interaction ultimately promotes the nucleation of SWNTs by a perpendicular model.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"238 ","pages":"Article 120279"},"PeriodicalIF":10.5,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143777089","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