化学最新文献

{"title":"The multi-scale dissipation mechanism of composite solid electrolyte based on nanofiber elastomer for all-solid-state lithium metal batteries.","authors":"Wen Yu, Hengying Xiang, Jianing Yue, Xiaofan Feng, Wenwen Duan, Yang Feng, Bowen Cheng, Nanping Deng, Weimin Kang","doi":"10.1016/j.jcis.2024.12.042","DOIUrl":"10.1016/j.jcis.2024.12.042","url":null,"abstract":"<p><p>Developing next generation batteries necessitates a paradigm shift in the way to engineering solutions for materials challenges. In comparison to traditional organic liquid batteries, all-solid-state batteries exhibit some significant advantages such as high safety and energy density, yet solid electrolytes face challenges in responding dimensional changes of electrodes driven by mass transport. Herein, the critical mechanical parameters affecting battery cycling duration are evaluated based on Spearman rank correlation coefficient, decoupling them into strength, ductility, stiffness, toughness, elasticity, etc. Inspired by the statistical results to apply the materials with stress-relief mechanisms, we propose an elastic solid electrolyte based on the multi-scale mechanical dissipation mechanism. The Li_6.4La₃Zr_1.4Ta_0.6O₁₂/thermoplastic polyurethanes curled fibrous framework is designed and prepared by side-by-side electrospinning technique, serving as elastic source and ion-transport pathways for the composite with poly(ethylene oxide) matrix. Dominated sequentially by electrolyte deformation, network orientation, extendable fibers and molecular chain unfolding, the prepared elastic electrolyte exhibits excellent resilience, compression and puncture resistance. Meanwhile, the curled fast ion conductor fibers can also provide the transport pathways along the component of transmembrane direction, endowing the composite electrolyte with an ionic conductivity of 1.46 × 10^-4 S cm^-1 at 30 °C. A low capacity decay of 0.011 % per cycle at 2 C in assembled LiFePO₄/Li battery and an excellent lifespan of 1000 cycles at 50 °C in LiNi_0.8Mn_0.1Co_0.1O₂/Li battery can be achieved. The elastic electrolyte system presents a promising strategy for enabling stable operation of high-energy all-solid-state lithium batteries.</p>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"682 ","pages":"1073-1084"},"PeriodicalIF":9.4,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142811513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High energy storage density in high-temperature capacitor films at low electric fields.","authors":"Hua Wang, Zhichao Hu, Junhong Pan, Qian Liu, Chengli Sun, Chaowei Zhong, Enzhu Li","doi":"10.1016/j.jcis.2024.12.006","DOIUrl":"10.1016/j.jcis.2024.12.006","url":null,"abstract":"<p><p>High-power applications, particularly in electromagnetic catapults, electric vehicles, and aerospace, necessitate the use of polymer dielectrics that demonstrate reliable performance in high-temperature environments. This study focuses on synthesizing three distinct morphologies of innovative wide-bandgap high-dielectric materials-hydroxyapatite (HAP). By conducting a combination of experiments and Multiphysics finite element simulations, a comprehensive comparison was made regarding the properties exhibited by three polyimide (PI) composites: PI/sea urchin-like HAP, PI/spherical HAP, and PI/rodlike HAP. The incorporation of high-surface-area spherical HAP or high aspect ratio rodlike HAP introduces intricate and convoluted growth paths for electric tree formation within the PI matrix, thereby augmenting the energy storage density (U_e) at elevated temperatures (U_{η > 90%} = 4.82 J/cm³, U_{η > 80%} = 6.11 J/cm³, U_{η > 70%} = 8.73 J/cm³, at 150 ℃). The incorporation of HAP increases the dielectric constant ε_r to a maximum value of 4.96 in pure PI matrices, enabling the resulting PI/HAP composites to achieve remarkable values for both U_e (4.82 J/cm³) and η (92.4 %) even under low electric field (E) conditions (350 MV/m). The PI/HAP composite film demonstrates high energy storage density under low E, offering an innovative solution for energy storage applications in film capacitors operating in high-temperature environments.</p>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"682 ","pages":"1104-1115"},"PeriodicalIF":9.4,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142816917","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High-performance aqueous zinc-ion hybrid micro-supercapacitors enabled by oxygen-rich functionalised MXene nanofibres.","authors":"Yamin Feng, Weifeng Liu, Haineng Bai, Yan Zhang, Yunxiao Du, Yongqiang Liu, Long Zhang","doi":"10.1016/j.jcis.2024.12.038","DOIUrl":"10.1016/j.jcis.2024.12.038","url":null,"abstract":"<p><p>Aqueous zinc-ion hybrid micro-supercapacitors (AZIHMSCs) with high power density, moderate energy density, good cycle life and excellent safety are promising candidates for micro-energy storage. Among them, AZIHMSCs based on Ti₃C₂T_x MXene anodes and battery-type cathodes can provide superior performance. However, two-dimensional (2D) Ti₃C₂T_x MXene electrodes have an inherent restacking issue and -F surface terminations that hinder ion diffusion and ultimately reduce the energy storage capacity of the corresponding AZIHMSCs. Herein, a deep alkalisation strategy was developed to synthesise oxygen-rich, functionalised MXene (O-MXene) nanofibres to solve these problems. Compared with the traditional 2D few-layered Ti₃C₂T_x MXene electrode, O-MXene electrodes exhibit an interconnected, three-dimensional (3D) microstructure and ample oxygen functional groups, enhancing Zn²⁺ affinity and improving capacitance and rate performance. First-principles calculations further reveal the enhanced interactions between O-MXene electrodes and Zn²⁺ supported by atomic interaction, electronic behaviour and orbital hybridization. The AZIHMSCs fabricated with an O-MXene film anode and a MnO₂-multiwalled carbon nanotubes (MnO₂-MWCNTs) film cathode exhibit excellent energy density (130.6 μWh cm^-2), power density (9.5 mW cm^-2), cycling stability (93.29 % after 5000 cycles) and flexibility (98.43 % capacitance retained at 120° bending). This study will open new avenues for modifying MXene materials and next-generation high-performance AZIHMSCs.</p>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"682 ","pages":"1085-1093"},"PeriodicalIF":9.4,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142816918","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Double catalysis of Co₉Se₈-Ni₃Se₄ heterogeneous dual-chamber core-shell Achieves high conversion of polysulfides.","authors":"Chunman Yang, Fei Wang, Yongqi Wang, Wenchang Han, Wengxiang Ai, Qian Wang, Yuhan He, Ziyi Zhu, Yiyong Zhang, Xue Li","doi":"10.1016/j.jcis.2024.12.010","DOIUrl":"10.1016/j.jcis.2024.12.010","url":null,"abstract":"<p><p>Achieving efficient catalytic conversion of lithium polysulfides is a key way to improve kinetics in lithium-sulfur (Li-S) batteries. However, due to the limited nature of the catalyst interface, it is difficult to achieve a high conversion rate of LiPSs in one step. A novel heterogeneous dual-chamber core-shell nanocatalyst (Co₉Se₈-Ni₃Se₄@PC) is described here, which efficiently accommodates sulfur and provides a heterogeneous dual catalytic interface like a two-stage \"filter\". The dual guarantee provides a rapid and high-ratio catalytic conversion of LiPSs. Through in-situ Raman experiments and theoretical analysis, it has been proved that the dual-chamber multi-stage catalytic structure can promote the efficient conversion of LiPSs and good sulfur species reversibility. The Co₉Se₈-Ni₃Se₄@PC cathode provides an initial specific capacity of 923mAh/g at 2C, and the average capacity decay rate after 800 cycles is only 0.048 %. This work provides new ideas for designing new nanocatalysts in lithium-sulfur systems and insights into achieving multi-stage catalysis in structural design.</p>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"682 ","pages":"1164-1174"},"PeriodicalIF":9.4,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142821707","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A PEGylated deep eutectic solvent for \"bubbling\" synthesis of SnO₂/SnS heterostructure for the stable lithium-ion storage.","authors":"Zhiqiang Liu, Hui Li, Huan Yao, Yi Zhuang, Runbo Gao, Zhiteng Wang, Zhenhe Zhu, Huixin Lan, Zeheng Li, Wenlong Cai","doi":"10.1016/j.jcis.2024.12.014","DOIUrl":"10.1016/j.jcis.2024.12.014","url":null,"abstract":"<p><p>Constructing heterostructures is an effective strategy for the synthesis of high-performance anode electrode materials for lithium-ion batteries (LIBs). In this study, a \"bubbling\" PEGylated deep eutectic solvent (DES) method is utilized to synthesize SnO₂/SnS heterostructure nanodots anchored on carbon nanosheets (SnO₂/SnS@CN). A comprehensive investigation of the physical and chemical processes during the \"bubbling\" reaction offers in-depth insights into the underlying mechanism of the PEGylated DES approach. The carbon nanosheet structure enhances the electrical conductivity between SnO₂ particle units and, due to its excellent mechanical properties, significantly contributes to material stability. The nanodot configuration of the heterostructure further improves electron transfer and lithium-ion (Li⁺) migration within the SnO₂ units. The SnO₂/SnS@CN material exhibits outstanding Li⁺ storage performance, achieving a high capacity of 675.6 mA h/g at 1 A/g after 1000 cycles. These findings establish a theoretical foundation for preparing heterostructure anode materials using the \"bubbling\" PEGylated DES method.</p>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"682 ","pages":"995-1005"},"PeriodicalIF":9.4,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142805588","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tuning of Zr content in TiMn₂ based multinary alloys by powder metallurgy to fabricate superior hydrogen storage properties.","authors":"He Zhang, Zhihui Ma, Zhen Wang, Yong Liu, Fanxin Lin, Guodong Miao, Aimin Ju, Xuanhui Qu, Ping Li","doi":"10.1016/j.jcis.2024.12.043","DOIUrl":"10.1016/j.jcis.2024.12.043","url":null,"abstract":"<p><p>TiMn₂ based multinary alloys make full use of the high abundance of rare earth resources in attractive applications of hydrogen storage but suffer from mediocre hydrogen ab/desorption kinetics and lack the in-depth mechanism analysis of hydrogenation/dehydrogenation behavior. Herein, on the basis of current research on compositional modulation, we utilize the low-cost powder metallurgy method to prepare Ti_0.9+xZr_0.1-xMn_1.4Cr_0.4V_0.2 (x = -0.05, 0, 0.05) hydrogen storage alloy powders, which effectively reduces the preparation cost. What's more, the fractional substitution of Zr for Ti boosts the hydrogenation by introducing defects and modulating the d-band center. The synthesized Ti_0.85Zr_0.15Mn_1.4Cr_0.4V_0.2 hydrogen storage sample manifests exceptional hydrogen kinetics (almost no incubation) and hydrogen storage capacity (1.73 wt%). The intrinsic reaction mechanism of Zr substitution is elucidated from the viewpoint of microstructure and strain engineering, combined with density functional theory (DFT) analysis. This study provides valuable insights into the design and application of high-performance TiMn₂ based multinary hydrogen storage alloys.</p>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"682 ","pages":"1040-1050"},"PeriodicalIF":9.4,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142811517","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced photocatalytic performance in seawater of donor-acceptor type conjugated polymers through introduction of alkoxy groups in the side chain.","authors":"Xinjuan Zhang, Menghan Chang, Di Wang, Lin Wang, Xuan Yang, Zhaohang Ben, Qiang Zhang, Yan Lu","doi":"10.1016/j.jcis.2024.11.242","DOIUrl":"10.1016/j.jcis.2024.11.242","url":null,"abstract":"<p><p>Previous studies have demonstrated that the donor (D)-acceptor (A) structure enables conjugated polymers (CPs) to effectively inhibit charge recombination, reduce exciton binding energy to a minimum, and broaden the light absorption spectrum, ultimately enhancing photocatalytic activity. Besides, side chain engineering is an effective approach to enhance photocatalytic performance by regulating surface chemistry and energy band structure of CPs. Herein, three D-A type CPs, namely TPD-T, TPD-MOT and TPD-DOT, were designed and synthesized using thieno[3,4-c]pyrrole-4,6-dione (TPD) as A units and thiophene with different alkyl/alkoxy groups side chain (as 3-octylthiophene (T), 3-methoxythiophene (MOT) and 3,4-ethylenedioxythiophene (DOT)) as D units, via an atom- and step-economic CH/CH cross-coupling polycondensation. The photocatalytic hydrogen production performance of these polymers driven by visible light was systematically evaluated in pure water and natural seawater. The results show that the hydrogen evolution rates (HERs) of the as-synthesized CPs in pure water and natural seawater significantly increased by 5 and 7 times, respectively, when the number of alkoxy groups on the side chain of polymers increased from 0 to 2. In particular, HERs of three polymers in natural seawater are distinctly better than that in pure water. Further, the steady-state photoluminescence (PL), time-resolved fluorescence decay, and electrochemical impedance spectroscopy (EIS) studies combined with density functional theory (DFT) simulations were carried out to figure out the possible mechanism of the enhanced photocatalytic performance of CPs by side chain engineering. This work indicates that side chain engineering contributes significantly to determine the photocatalytic activity of D-A polymers-based photocatalysts, and could serve as guidelines for organic photocatalysts with highly efficient hydrogen evolution performance.</p>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"682 ","pages":"1151-1163"},"PeriodicalIF":9.4,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142821712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Covalent organic framework derived single-atom copper nanozymes for the detection of amyloid-β peptide and study of amyloidogenesis.","authors":"Yuxin Wei, Qingqing Bai, Xinlu Ning, Xiaofan Bai, Jie Lv, Meng Li","doi":"10.1007/s00216-024-05683-1","DOIUrl":"10.1007/s00216-024-05683-1","url":null,"abstract":"<p><p>Sensitive and accurate detection of the amyloid-β (Aβ) monomer is of fundamental significance for early diagnosis of Alzheimer's disease (AD). Herein, inspired by the specific Cu-Aβ monomer coordination, a cutting-edge colorimetric assay based on single-atom Cu anchored N-doped carbon nanospheres (Cu-NCNSs) was developed for Aβ monomer detection and an amyloidogenesis study. By directly pyrolyzing Cu²⁺-incorporated covalent organic frameworks (COFs), the resulting Cu-NCNSs with a high loading of Cu (8.04 wt %) exhibited outstanding peroxidase-like activity. The strong binding affinity of Aβ monomer to Cu-NCNSs effectively inhibited their catalytic activity, providing the basis for the colorimetric assay. The Cu-NCNSs-based sensor showed a detection limit of 1.182 nM for Aβ monomer, surpassing traditional techniques in terms of efficiency, accuracy and simplicity. Moreover, the system was successfully utilized for Aβ monomer detection in rat cerebrospinal fluid (CSF). Notably, the distinct inhibitory effects of monomeric and aggregated Aβ species on the catalytic activity of Cu-NCNSs were allowed for monitoring of the dynamic aggregation process of Aβ. Compared to thioflavin T (ThT), the most widely used amyloid dye, the detection system exhibited greater sensitivity towards toxic Aβ oligomers, which was crucial for early AD diagnosis and treatment. Our work not only sheds light on the rational design of highly active single-atom nanozymes from COFs but also expands the potential applications of nanozymes in early disease diagnosis.</p>","PeriodicalId":462,"journal":{"name":"Analytical and Bioanalytical Chemistry","volume":" ","pages":"1081-1092"},"PeriodicalIF":3.8,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142833591","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"AuNPs/GO/Pt microneedle electrochemical sensor for in situ monitoring of hydrogen peroxide in tomato stems in response to wounding stimulation.","authors":"Xiaolong Yang, Doudou Huo, Yiran Tian, Xingliu Geng, Liang Xu, Daji Zhong, Rong Zhou, Songzhi Xu, Yali Zhang, Lijun Sun","doi":"10.1007/s00216-024-05728-5","DOIUrl":"10.1007/s00216-024-05728-5","url":null,"abstract":"<p><p>Hydrogen peroxide (H₂O₂) is a critical signaling molecule with significant roles in various physiological processes in plants. Understanding its regulation through in situ monitoring could offer deeper insights into plant responses and stress mechanisms. In this study, we developed a microneedle electrochemical sensor to monitor H₂O₂ in situ, offering deeper insights into plant stress responses. The sensor features a platinum wire (100 µm diameter) modified with graphene oxide (GO) and gold nanoparticles (AuNPs) as the working electrode, an Ag/AgCl wire (100 µm diameter) as the reference electrode, and an untreated platinum wire (100 µm diameter) as the counter electrode. This innovative design enhances sensitivity and selectivity through the high catalytic activity of AuNPs, increased surface area from GO, and the superior conductivity of platinum. Operating at a low potential of -0.2 V to minimize interference, the sensor detects H₂O₂ concentrations from 10 to 1000 µM with high accuracy. In situ monitoring of H₂O₂ dynamics in tomato stems under the wounding stimulation reveals that H₂O₂ concentration increases as the sensor approaches the wound site, indicating localized production and transport of H₂O₂. This approach not only improves H₂O₂ monitoring in plant systems but also paves the way for exploring its generation, transport, and elimination mechanisms.</p>","PeriodicalId":462,"journal":{"name":"Analytical and Bioanalytical Chemistry","volume":" ","pages":"1067-1079"},"PeriodicalIF":3.8,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143027641","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysis of time-of-flight secondary ion mass spectrometry data of human skin treated with diclofenac using sparse autoencoder.","authors":"Atsumi Shinozaki, Kazuhiro Matsuda, Satoka Aoyagi","doi":"10.1007/s00216-024-05711-0","DOIUrl":"10.1007/s00216-024-05711-0","url":null,"abstract":"<p><p>Methods that facilitate molecular identification and imaging are required to evaluate drug penetration into tissues. Time-of-flight secondary ion mass spectrometry (ToF-SIMS), which has high spatial resolution and allows 3D distribution imaging of organic materials, is suitable for this purpose. However, the complexity of ToF-SIMS data, which includes nonlinear factors, makes interpretation challenging. Therefore, in this study, ToF-SIMS data of a stratum corneum treated with diclofenac were analyzed using machine learning to enable the evaluation of drug distribution. Diclofenac-related mass peaks were identified using autoencoder results, and the degree of penetration was evaluated across 2-20^th stripped tapes. In addition, the permeation pathway was clarified by comparing the secondary ion images of phosphatidylethanolamine (PhEA; a marker of the inside of the cell); cholesterol, which is abundant in cell membranes; and diclofenac. Based on the biomolecule-related ion images showing the penetration pathway of diclofenac applied to the skin, diclofenac penetrates both the extracellular space and inside cells.</p>","PeriodicalId":462,"journal":{"name":"Analytical and Bioanalytical Chemistry","volume":" ","pages":"1049-1054"},"PeriodicalIF":3.8,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142891275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}