Journal of Colloid and Interface Science最新文献

{"title":"Chemisorption and physisorption of alcohols on iron(III) oxide-terminated surfaces from nonpolar solvents.","authors":"Ibrahim E Salama, Radomir I Slavchov, Sorin V Filip, Stuart M Clarke","doi":"10.1016/j.jcis.2025.01.086","DOIUrl":"https://doi.org/10.1016/j.jcis.2025.01.086","url":null,"abstract":"<p><strong>Hypothesis: </strong>The adsorption isotherm of alkanols at the haematite|hydrocarbon interface should reflect both chemisorption (chemically bonded fraction) and physisorption (hydrogen bonded fraction).</p><p><strong>Experiments and model: </strong>Quartz crystal microbalance (QCM) and X-ray photoelectron spectroscopy (XPS) have been used for characterization of Fe₂O₃|hydrocarbon interfaces with absorbed alcohol. A range of Fe₂O₃-terminated surfaces, alkanols, hydrocarbons and temperatures have been investigated. A chemisorption-physisorption Langmuir model (CPL) has been developed to interpret the data.</p><p><strong>Findings: </strong>All data show simultaneous physisorption and chemisorption of the alcohol. The CPL analysis reveals variability of the surface chemistry from one sample to another - different fractions of surface sites have been determined for Fe₂O₃-coated crystals, Fe₂O₃ powder, stainless steel-coated crystals etc. However, for a given surface, the fraction of chemisorption sites is stable - it does not change with the alcohol, and changes only slightly with the solvent. The physisorbed alcohol molecules assume configuration normal to the surface, while the chemisorbed molecules assume configuration that is either parallel (high homologues) or normal (low homologues). A transition from normal to parallel orientation has been observed at hexyl. The effects from branching of the alcohol are captured well by CPL. The temperature has been shown to alter both the strength of the physisorption and the fraction of available chemisorption sites.</p>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"685 ","pages":"15-28"},"PeriodicalIF":9.4,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142997879","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":"Cobalt-Zinc carbonaceous yolk-shell reactor enhances electron transfer in non-radical pathways: Electric potential concentration effect via bimetallic synergy.","authors":"Xu Sun, Ping Xi, Xingxiang Ji, José Alemán, Jinquan Wan, Yiping Zhang, Shiyu Zuo, Yongwen Ma","doi":"10.1016/j.jcis.2025.01.099","DOIUrl":"https://doi.org/10.1016/j.jcis.2025.01.099","url":null,"abstract":"<p><p>Bimetallic catalysts have notable advantages in the field of persulfate activation owing to their intermetallic synergy. However, studies on stimulating the potential concentration effect through intermetallic coordination to enhance the electron transfer efficiency are limited. In this study, a cobalt (Co) and zinc (Zn) bimetallic yolk-shell structured high-efficiency peroxymonosulfate (PMS) catalyst (Z67@8-HCNF) was prepared by the derivatization of metal-organic backbone materials and was found to produce significant synergistic interactions between Co and Zn metals, which could be utilized to trigger the potential concentration effect to enhance the intermolecular electron transfer efficiency and achieve efficient PMS activation. Experimental and theoretical calculations showed that a Co and Zn bimetallic neighborhood coordination configuration (Co-Zn-N@C) was constructed through the synergistic interaction of Zn and Co, which synchronously enhanced the electric field strengths at the Co and Zn metal centers, thereby inducing a potential concentration and a significant increase in the Co and Zn potentials. This potential concentration effect enhances PMS adsorption and electron transfer, promoting the catalytic degradation performance. In this study, we propose a mechanism to enhance the catalytic degradation efficiency of the non-radical pathway through the potential concentration effect of the simultaneous enhancement of the Co and Zn bi-substituent potentials, which provides new inspiration for the continued development of highly efficient bimetallic catalysts to improve water purification technology in complex environments.</p>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"685 ","pages":"1-14"},"PeriodicalIF":9.4,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142997880","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":"Structural and electrochemical investigation of P2-Na_0.67Fe_0.5Mn_0.5O₂ high-performance sodium ion cathode materials.","authors":"Haitao Xue, Songtao Liu, Yanjiao Liu, Hengrui Qiu, Jinlong Cui, Qi Liu, Yongqiang Zhang, Wenxiu He","doi":"10.1016/j.jcis.2025.01.121","DOIUrl":"https://doi.org/10.1016/j.jcis.2025.01.121","url":null,"abstract":"<p><p>Fe/Mn-based metal oxides have attracted considerable attention as cathode materials for sodium-ion batteries owing to their low cost and high specific capacity. However, the relatively large ionic radius of the sodium ion (1.02 Å) results in inefficient diffusion kinetics, resulting in reduced battery performance. In this study, we enhance the electrochemical performance of P2-Na_0.67Fe_0.5Mn_0.5O₂ by optimizing its crystal structure through controlling calcination time, rather than relying on traditional ion doping methods. The optimized Na_0.67Fe_0.5Mn_0.5O₂ exhibits an initial capacity of 166.1 mAh·g^-1, retaining 73.64 % after 100 cycles at 0.1C (1C = 260 mA·g^-1). Additionally, it demonstrates an initial capacity of 120 mAh·g^-1 at 1C, with 81.25 % of this capacity maintained after 150 cycles, surpassing recently modified materials. The electrochemical properties of Na_0.67Fe_0.5Mn_0.5O₂ were further characterized using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Results indicate that Na_0.67Fe_0.5Mn_0.5O₂ calcined at 900 °C for 12 h exhibits high crystallinity, moderate particle size, and a smooth morphology. Moreover, the cell parameter c is successfully enhanced, thereby expanding the sodium-ion channels and improving sodium-ion diffusion efficiency. XPS results reveal that Fe³⁺ facilitates the oxidation of Mn³⁺ to Mn⁴⁺. Furthermore, the material calcined for 12 h has the highest Mn⁴⁺ content, effectively mitigating the Jahn-Teller effect and improving the stability of the charge-discharge process. These findings indicate that adjusting calcination time is an effective strategy for developing low-cost, high-performance sodium-ion battery cathode materials.</p>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"685 ","pages":"87-96"},"PeriodicalIF":9.4,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142996672","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":"Crosslinking modification of starch improves the structural stability of hard carbon anodes for high-capacity sodium storage.","authors":"Yangkai Sun, Tianchi Shen, Zijian He, Shurong Wang","doi":"10.1016/j.jcis.2024.09.191","DOIUrl":"10.1016/j.jcis.2024.09.191","url":null,"abstract":"<p><p>Compared with the complex components of raw biomass, biomass derivatives with defined structures are more conducive to the controllable synthesis of hard carbon (HC) materials. Starch-based HC has garnered significant attention because of its cost-effectiveness; however, its practical applicability is limited by poor thermal stability. Herein, we propose a strategy for improving the stability of starch through self-assembly crosslinking modification, yielding high-performance HC. Starch and citric acid form a dense crosslinked structure through esterification between hydroxyl and carboxyl groups, effectively overcoming the poor thermal stability. The resulting HC exhibits a low specific surface area (SSA) and abundant closed pore structures, thereby enabling substantial sodium-ion storage. The optimized HC exhibits an improved reversible capacity of 378 mAh g^-1 and an initial Coulombic efficiency (ICE) of 90.9 %. After 100 cycles at 0.5 C, it retains 98 % initial capacity. The assembled full-cell shows a high energy density of 248 Wh kg^-1. Furthermore, the structure-performance relationship analysis reveals that the slope capacity is primarily affected by the defect concentration, while the plateau capacity is mainly determined by the closed pore structure. Galvanostatic intermittent titration technique (GITT) tests and in-situ Raman spectroscopy reveal that the sodium-ion storage mechanism in starch-based HC is \"adsorption-intercalation/filling.\"</p>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"678 Pt C","pages":"1142-1150"},"PeriodicalIF":9.4,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142338414","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":"Boosting selective chlorine evolution reaction: Impact of Ag doping in RuO₂ electrocatalysts.","authors":"Yinlong Cheng, Pengyu Meng, Liansheng Li, Lixiang Zhong, Chengzong Yuan, Jie Chen, Qinghua Liang","doi":"10.1016/j.jcis.2025.01.097","DOIUrl":"https://doi.org/10.1016/j.jcis.2025.01.097","url":null,"abstract":"<p><p>The chlor-alkali process is critical to the modern chemical industry because of the wide utilization of chlorine gas (Cl₂). More than 95 % of global Cl₂ production relies on electrocatalytic chlorine evolution reaction (CER) through chlor-alkali electrolysis. The RuO₂ electrocatalyst serves as the main active component widely used in commercial applications. However, oxygen evolution reaction (OER) generally competes with CER electrocatalysts at RuO₂ electrocatalyst owing to the intrinsically scaling reaction energy barrier of *OCl and *OOH intermediates, leading to decreased CER selectivity, high energy consumption, and increased cost. Here, the effect of Ag doping on selective CER over RuO₂ electrocatalysts prepared by a sol-gel method has been systematically studied. We found that Ag-doping can effectively improve the Faradaic efficiency of RuO₂ electrocatalyst for CER. Furthermore, the improved CER selectivity of Ag-doped RuO₂ electrocatalysts is highly dependent on the Ag-doping concentration. The optimized Ag_0.15Ru_0.85O₂ electrocatalyst displays an overpotential of 105 mV along with a selectivity of 84.64 ± 1.84 % in 5.0 M NaCl electrolyte (pH = 2.0 ± 0.05), significantly outperforming undoped one (142 mV, 72.75 ± 1.52 %). Our experiments and density functional theory (DFT) calculations show electron transfer from Ag⁺ to Ru⁴⁺ suppresses *OOH intermediates desorption on Ag-doped RuO₂, enabling improved CER selectivity. Such designs of Ag-doped RuO₂ electrocatalysts are expected to be favorable for practical chlor-alkali applications.</p>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"685 ","pages":"97-106"},"PeriodicalIF":9.4,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142997866","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":"Dendrite-free zinc metal anode for long-life zinc-ion batteries enabled by an artificial hydrophobic-zincophilic coating.","authors":"Hanning Zhang, Tao Shui, Nosipho Moloto, An Li, Ruogu Zhang, Jiacheng Liu, Song-Zhu Kure-Chu, Takehiko Hihara, Wei Zhang, ZhengMing Sun","doi":"10.1016/j.jcis.2024.09.092","DOIUrl":"10.1016/j.jcis.2024.09.092","url":null,"abstract":"<p><p>Considering the desired energy density, safety and cost-effectiveness, rechargeable zinc-ion batteries (ZIBs) are regarded as one of the most promising energy storage units in next-generation energy systems. Nonetheless, the service life of the current ZIBs is significantly limited by rampant dendrite growth and severe parasitic reactions occurring on the anode side. To overcome these issues caused by poor interfacial ionic conduction and water erosion, we have developed a facile strategy to fabricate a uniform zinc borate layer at the zinc anode/electrolyte interface (ZnBO). Such protective layer integrates superhydrophobic-zincopholic properties, which can effectively eliminate the direct contact of water molecules on the anode, and homogenize the interfacial ionic transfer, thereby enhancing the cyclic stability of the zinc plating/stripping. As a result, the as-prepared ZnBO-coated anode exhibits extended lifespan of 1200 h at 1 mA cm^-2 and demonstrates remarkable durability of 570 h at 20 mA cm^-2 in Zn||Zn symmetric cells. Additionally, when coupled to an NH₄V₄O₁₀ (NVO) cathode, it also delivers a superior cyclability (203.5 mAh/g after 2000 cycles at 5 A/g, 89.3 % capacity retention) in coin full cells and a feasible capacity of 2.5 mAh at 1 A/g after 200 cycles in pouch full cells. This work offers a unique perspective on integrating hydrophobicity and zincophilicity at the anode/electrolyte interface through an artificial layer, thereby enhancing the cycle lifespan of ZIBs.</p>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"678 Pt B","pages":"1148-1157"},"PeriodicalIF":9.4,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142278133","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":"Weakening Coulomb interactions in ionic liquid via hydrogen bonds enables ultrafast supercapacitors.","authors":"Ya-Feng Fan, Zong-Lin Yi, Yi Zhou, Hao Liu, Qian Sun, Li-Jing Xie, Zhen-Bing Wang, Fang-Yuan Su, Cheng-Meng Chen","doi":"10.1016/j.jcis.2025.01.093","DOIUrl":"https://doi.org/10.1016/j.jcis.2025.01.093","url":null,"abstract":"<p><p>The application of ionic liquid electrolytes in ultrafast supercapacitors to achieve wide electrochemical operating windows and high electrochemical stability is highly applauded. However, the strong Coulomb interaction between ions leads to the overscreening effect and slow establishment process of the electrical double layer (EDL), which deteriorates the rate performance of supercapacitors. Herein, inspired by Coulomb's law and EDL transient dynamics, we introduce competitive hydrogen bond interactions into typical ionic-liquid electrolytes to weaken the Coulomb interaction between ions. Density functional theory calculations, nuclear magnetic resonance spectroscopy, and Fourier infrared spectrum, combined with differential capacitance, suggest that the introduction of competitive hydrogen bonds is responsible for the suppression of Coulomb interaction between ions. The existence of appropriate hydrogen bonds effectively improves the ion coordination and the interface model of the electrode surface, thus enhancing the response kinetics of ions. Based on this hybrid electrolyte design, the fabricated supercapacitor delivers an outstanding capacity of 100.0 mF g^-1 at 120 Hz with a cut-off frequency of 1842.4 Hz and a relaxation time of 0.62 ms. This work opens a pathway towards the design of electrolytes for ultrafast supercapacitors.</p>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"685 ","pages":"107-115"},"PeriodicalIF":9.4,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142997642","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":"Interfacial design of pyrene-based covalent organic framework for overall photocatalytic H₂O₂ synthesis in water.","authors":"Mengqi Zhang, Rongchen Liu, Fulin Zhang, Hongxiang Zhao, Xia Li, Xianjun Lang, Zhiguang Guo","doi":"10.1016/j.jcis.2024.09.189","DOIUrl":"10.1016/j.jcis.2024.09.189","url":null,"abstract":"<p><p>Covalent organic frameworks (COFs) have shown great potential in the photocatalytic production of hydrogen peroxide (H₂O₂) due to their precisely designed and customized ability. Nevertheless, the quest for efficient overall photosynthesis of H₂O₂ in pure water without sacrificial agents using COF photocatalysts remains a formidable challenge. Herein, three pyrene-based covalent organic frameworks are synthesized using an advanced interfacial design strategy. By incorporating functional groups of F, H, and OH into a COF skeleton, their wettability and charge-separation properties are fine-tuned. These COFs show great performances as photocatalysts for H₂O₂ production from water and air by utilizing both the oxygen reduction reaction and water oxidation reaction pathways. Compared to PyCOF-F and PyCOF-H, PyCOF-OH demonstrates superior H₂O₂ production efficiency due to its improved hydrophilicity and enhanced carrier separation, achieving a remarkable rate of 2961 µmol g^-1 h^-1 from 25 mL pure water and air. Further, the mechanism of H₂O₂ production over PyCOF-OH is clarified by combining a series of control experiments, in situ characterizations, and theoretical calculations. This study offers valuable insights into the interfacial design of high-performance photocatalysts for H₂O₂ synthesis.</p>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"678 Pt C","pages":"1170-1180"},"PeriodicalIF":9.4,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142338416","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":"Versatile and robust transparent polymer film with preprogrammed diffusion and bidirectional irreversible fluorescence for sequential information encryption.","authors":"Mingda Yang, Ahmed Olalekan Omoniyi, Feifeng Chen, Jinfang Liu, Wenfei Li, Dongdong Chen, Cunyou Chen, Yang Zhou, Jianfu Zhang","doi":"10.1016/j.jcis.2025.01.116","DOIUrl":"https://doi.org/10.1016/j.jcis.2025.01.116","url":null,"abstract":"<p><p>The materials currently available for information encryption often suffer from low transparency, poor mechanical strength, and a reliance on single decryption conditions, which limits their security and hence application potential. To address these challenges, we developed a transparent, mechanically robust polymer film inspired by the camouflage and communication strategies of the glass squid. In this film, 2,5-dihydroxyterephthalic acid (DHTA) and zinc acetate dihydrate are integrated into a crosslinked polyvinyl alcohol-glutaraldehyde (PVA-GA) matrix to achieve bidirectional irreversible fluorescence and sequential decryption. The material exhibits high transparency (>89 %) and impressive tensile strength (60 MPa), and its fluorescence responses can be tuned with UV light, alkaline conditions, and high-temperature ethanol solutions. Based on preprogrammed diffusion rates, customizable time-based decryption can be achieved with the film, advancing multilevel encryption techniques. These findings demonstrate that this film represents a promising platform for secure information encryption and anticounterfeiting applications.</p>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"685 ","pages":"73-86"},"PeriodicalIF":9.4,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142997409","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":"Construction of 2D CoFe-MOF derived from LDH electrocatalyst for efficient oxygen and urea evolution.","authors":"Aojie Yuan, Jianhao Du, Yang Zheng, Huan Liu, Haojun Zhang, Honglei Li, Long Chen","doi":"10.1016/j.jcis.2025.01.115","DOIUrl":"https://doi.org/10.1016/j.jcis.2025.01.115","url":null,"abstract":"<p><p>Two-dimensional metal-organic framework (2D MOF) materials have significant development prospects in the technology of urea-assisted water electrolysis for hydrogen production. However, the poor conductivity, low mass permeability, and stability have limited their development in electrocatalysis. Here, CoFe-BDC is synthesized using layered double hydroxides (LDH) as the template. The effect of different ligands of CoFe-MOF on the microstructure and electrocatalytic performance is systematically investigated. Terephthalic acid has the weakest destructive ability and strongest coordination ability due to its high symmetry in spatial structure and its weakest acidity than other ligands, leading to the production of massive active sites. CoFe-BDC has the best electrocatalytic activity (oxygen evolution reaction (OER): η₁₀₀ = 258 mV, urea oxidation reaction (UOR): η₁₀₀ = 1.34 V, overall water splitting (OWS): E₁₀₀ = 1.76 V). CoFe-BDC is observed to undergo a catalytic transformation to FeOOH at a reconstruction voltage of 1.4 V via in situ Fourier transform infrared spectroscopy and Raman spectroscopy. This study provides a new approach of 2D MOFs materials using template method for water electrolysis.</p>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"684 Pt 2","pages":"243-250"},"PeriodicalIF":9.4,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142997696","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}