Carbon最新文献

{"title":"Constructing bioinspired mineralization interface between carbon fiber and epoxy coating with robust anti-corrosion and anti-erosion performances","authors":"Lu Shen ,&nbsp;Lijing Miao ,&nbsp;Yuhan Zhang ,&nbsp;Yichen Zhao ,&nbsp;Weiping Xie ,&nbsp;Xiaoshu Lu ,&nbsp;Kui Wang ,&nbsp;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 (Ca₃(PO₄)₂) 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 mm³, respectively. The M-CF/EP coating exhibited a TC of 0.75 W m⁻¹ K⁻¹, 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}

{"title":"Grafting-through functionalization of graphene oxide with cationic polymers for enhanced adsorption of anionic dyes and viruses","authors":"Ryota Kimura ,&nbsp;Pilar Ferré-Pujol ,&nbsp;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}

{"title":"Understanding the growth of carbon dots derived from bioresources via plasma-electrified synthesis","authors":"Muhammad Hussnain Akmal ,&nbsp;Darwin Kurniawan ,&nbsp;Neha Sharma ,&nbsp;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}

{"title":"Local strain induced nanoscale double-wrinkles in graphene realized by STM tip-directed sliding","authors":"Yuang Li,&nbsp;Xueyan Li,&nbsp;Jiaqi Yang,&nbsp;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}

{"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 ,&nbsp;Ludovica D'Annibale ,&nbsp;Andrea Giacomo Marrani ,&nbsp;Francesco Amato ,&nbsp;Olga Russina ,&nbsp;Silvia Iacobelli ,&nbsp;Francesco Mura ,&nbsp;Raphael Sieweck ,&nbsp;Francesca Pagnanelli ,&nbsp;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}

{"title":"Building a multi-performance wearable rubber-based strain sensor: for human motion capture, optical heating and underwater sensing","authors":"Mengnan Qu ,&nbsp;Menglin Zhu ,&nbsp;Qinghua Liu ,&nbsp;Jiehui Li ,&nbsp;Yuhang Gao ,&nbsp;Jin Zhang ,&nbsp;Mengge Cao ,&nbsp;Xiao Wei ,&nbsp;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 (SiO₂). Ultimately, a hydrophobic flexible NR/MWCNTs@AgNWs strain sensor was obtained, which exhibited high sensitivity (GF = 3.64), excellent linearity (R² = 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}

{"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,&nbsp;Xiaoning Zhao,&nbsp;Ya Lin,&nbsp;Zhongqiang Wang,&nbsp;Ye Tao,&nbsp;Haiyang Xu,&nbsp;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/MoO₂/MoS₂ (RMM) composite with MoO₂/MoS₂ heterogeneous microspheres grown in situ on reduced graphene oxide (rGO) is prepared through intermolecular hydrogen bonding and thermal reduction. The introduction of MoO₂/MoS₂ 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 MoO₂ and MoS₂, 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}

{"title":"Growing single-walled carbon nanotubes from alumina sheet supported catalyst and investigating carrier effects on chirality distribution","authors":"Qianru Wu ,&nbsp;Xin Chi ,&nbsp;Xiaojing Yao ,&nbsp;Guodong Xu ,&nbsp;Xiuyun Zhang ,&nbsp;Kezheng Chen ,&nbsp;Guangyi Lin ,&nbsp;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-Al₂O₃) and Fe₂O₃ 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}

{"title":"Perspectives on absorption-dominant electromagnetic interference shielding materials with MXene and carbon-based polymer composites","authors":"Nam Khanh Nguyen ,&nbsp;Daeyoung Kim ,&nbsp;Van Quan Phan ,&nbsp;Minji Kim ,&nbsp;Pangun Park ,&nbsp;Junghyo Nah","doi":"10.1016/j.carbon.2025.120276","DOIUrl":"10.1016/j.carbon.2025.120276","url":null,"abstract":"<div><div>Electromagnetic interference (EMI) shielding materials are essential for reducing unwanted electromagnetic radiation and ensuring the reliable operation of electronic devices. Among various EMI shielding strategies, absorption-dominated materials have gained significant attention due to their ability to reduce secondary reflection while maintaining high shielding effectiveness. This work provides a comprehensive overview of absorption-based EMI shielding materials, focusing on MXene- and carbon-based nanomaterials. The integration of these conductive nanomaterials into polymer matrix composites enables the development of lightweight, flexible, and easy-to-fabricate shielding materials. Furthermore, structural modifications such as foam architectures, gradient structures, and 3D-printed designs have been explored to enhance EM wave absorption while minimizing reflection. Additionally, novel strategies, including molecular-level surface functionalization, electrical polarization, and triboelectric surface charging effects, along with their synergistic interactions, have been explored to further suppress reflectivity and optimize absorption mechanisms. The practical applications of these materials span multi-band frequency EMI shielding, including 5G telecommunications, IoT devices, and automotive radar systems. Looking ahead, the integration of artificial intelligence (AI) and machine learning (ML) for materials design and optimization is expected to accelerate the discovery of next-generation high-performance, absorption-dominant EMI shielding materials. By leveraging data-driven approaches, researchers can predict shielding effectiveness, optimize material properties, and reduce experimental costs, leading to more efficient and scalable material development. This review highlights the current advancements, challenges, and future opportunities in absorption-dominant EMI shielding materials, providing an overview of highly efficient, low-reflectivity EMI shielding solutions.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"238 ","pages":"Article 120276"},"PeriodicalIF":10.5,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143768718","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}

{"title":"Graphene oxide sheet size influences the ion adsorption and permeation behavior of laminate membranes","authors":"Shuai Tan ,&nbsp;Samantha Reid ,&nbsp;Manh Thuong Nguyen ,&nbsp;Elaf A. Anber ,&nbsp;Daniel Foley ,&nbsp;Richard Shiery ,&nbsp;Vaithiyalingam Shutthanandan ,&nbsp;Mark E. Bowden ,&nbsp;Mitra Taheri ,&nbsp;Heriberto Hernandez ,&nbsp;Venkateshkumar Prabhakaran ,&nbsp;Grant E. Johnson","doi":"10.1016/j.carbon.2025.120280","DOIUrl":"10.1016/j.carbon.2025.120280","url":null,"abstract":"<div><div>We utilized size fractionation along with ion adsorption and permeation measurements, microscopy and spectroscopy characterization, and theoretical calculations to understand the role of graphene oxide (GO) sheet size and functionality in metal ion separations, focusing on europium cations (Eu³⁺) as a model system. Our findings reveal that even though different-sized GO sheets exhibit subtle differences in their chemical and physical properties, adsorbents and membranes assembled from GO flakes of various sizes display size-dependent ion adsorption capacities and permeation rates. Specifically, GO adsorbents and membranes comprised of smaller ∼0.6 and 0.8 μm diameter GO sheets exhibit higher Eu³⁺ adsorption capacities and lower permeation rates compared to those assembled from larger ∼1.0 μm GO sheets. Detailed experimental analysis and theoretical simulations suggest that this phenomenon may be attributed to three competing factors: 1) a shift of the primary Eu³⁺ diffusion pathway from the horizontal interlayer transport channels between larger vertically stacked GO sheets to the more numerous vertical pores between smaller adjacent GO sheets in nearby planes, 2) Coulombic effects induced by strong electrostatic interactions between carboxylate groups (–COO^-) located at the edges of smaller GO sheets and Eu³⁺ cations, and 3) the different binding energies between specific oxygen functional groups on GO and Eu³⁺. Understanding the role of the dimensions and chemical functionality of GO sheets in determining selective ion adsorption and transport provides useful insight to guide the rational design of improved adsorbents and membranes, opening up new opportunities for the separation of critical materials, including rare-earth elements.</div></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":"239 ","pages":"Article 120280"},"PeriodicalIF":10.5,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143848352","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}