Colloids and Surfaces A: Physicochemical and Engineering Aspects最新文献

{"title":"Dual roles of Dy in nickel-rich layered LiNi0.6Mn0.2Co0.2O2: Synergistic mechanisms of Fermi level state regulation and enhancement of cationic ordering","authors":"Zenglei Hou ,&nbsp;Longjiao Chang ,&nbsp;Wei Yang ,&nbsp;Ruifen Yang ,&nbsp;Anlu Wei ,&nbsp;Shaohua Luo","doi":"10.1016/j.colsurfa.2025.136804","DOIUrl":"10.1016/j.colsurfa.2025.136804","url":null,"abstract":"<div><div>The urgent demand from society for lithium-ion batteries necessitates the research of high-performance and high-stability cathode materials. Although the high nickel material has a high theoretical capacity, its stability has hindered the commercialization progress. In this work, we propose a new strategy guided by theory. By doping NCM622 with rare earth elements that possess high-energy d-level and f-level electrons and high charge density, it is theoretically possible to contribute more electronic states near the Fermi level, thereby enhancing the internal electronic conductivity of the material. This strategy not only increases the energy density but also inhibits the Li/Ni mixing and improves the cycle stability of the battery. The 1/24 Dy-doped NCM622 exhibits metallic conductors in both R_3m and monoclinic C2/m space groups, and thus has better electrical conductivity. The results of XRD refinement show that the Li/Ni mixture is effectively inhibited. Electrochemical data confirmed that the material can reach the ultra-high capacity of 210.8 mAh g⁻¹ at 0.1 C, and can still have 87.1 % energy residual after 300 cycles. The excellent electrochemical performance also depends on the synthesis optimization of the pure phase materials that we have explored using the orthogonal method. This study provides theoretical guidance for the application of rare-earth elements in high-nickel materials.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"717 ","pages":"Article 136804"},"PeriodicalIF":4.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143760899","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":"Spreading and breakup dynamics of successive droplets impacting a curved surface","authors":"T.Charan Teja,&nbsp;N Voshitha Dutt Reddy,&nbsp;Somnath Santra","doi":"10.1016/j.colsurfa.2025.136794","DOIUrl":"10.1016/j.colsurfa.2025.136794","url":null,"abstract":"<div><div>The dynamics of droplet impact on curved solid surfaces is a phenomenon of considerable importance in fields such as agriculture, manufacturing, and environmental science, yet it is poorly understood. This study provides a numerical investigation into the complex behavior of successive droplets impacting a curved surface, examining key parameters such as contact time, coalescence time, pinch-off time, and breakup morphology. Key findings reveal that the inertia of the droplets influences the contact, coalescence, and pinch-off times, with higher values leading to shorter interaction durations. Additionally, droplet behavior changes with varying surface curvature and contact angles, including modifications in droplet spreading and breakup phenomenon. The critical value of the radius of curvature of the substrate for the transition to peripheral breakup regimes is found to vary non-monotonically with the contact angle. Furthermore, the size ratio between the leading and trailing droplets plays a significant role in influencing the pinch-off time and morphology of the droplet. Specifically, we have obtained a range of <em>β</em>_max (the ratio of the maximum spreading diameter to the initial droplet diameter), which varies from 1.375 to 3.113, depending on the droplet inertia, surface curvature, substrate contact angle, and size ratio of the droplet. These results deepen our understanding of droplet interactions on curved surfaces, not only contributing to advancing theoretical models but also offering practical applications in diverse areas, including pesticide spraying, fuel injection, and medical droplet administration. By addressing the gap in understanding successive droplet impacts on curved geometries, this work paves the way for further exploration and optimization of droplet-based technologies.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"717 ","pages":"Article 136794"},"PeriodicalIF":4.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143760800","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":"Enhancing passivity and corrosion resistance of laser-powder bed fused maraging stainless steel CX through TiC-induced microstructure tailoring","authors":"Khashayar Morshed-Behbahani,&nbsp;Nika Zakerin,&nbsp;Elham Afshari,&nbsp;Donald Paul Bishop,&nbsp;Kevin Paul Plucknett,&nbsp;Ali Nasiri","doi":"10.1016/j.colsurfa.2025.136800","DOIUrl":"10.1016/j.colsurfa.2025.136800","url":null,"abstract":"<div><div>Maraging stainless steel Corrax® (also known as SS CX) can be successfully processed using the laser powder bed fusion (L-PBF) technology. However, the fabricated alloy exhibits anisotropic properties due to the formation of columnar grains along the build direction. While heat treatment can partially address this issue, it cannot fully eliminate it and adds an additional post-processing step to the manufacturing cycle. This research explores the strategic addition of TiC particles as an effective inoculant to refine the microstructure of L-PBF SS CX and investigates the influence of these microstructural changes on its corrosion performance—an area yet to be explored in existing literature. TiC particles were incorporated into the initial SS CX powder feedstock at 1 wt% and 2 wt% concentrations, and the results were compared to those of the non-inoculated alloy. The addition of TiC inoculants effectively refined the grain structure and promoted the formation of a duplex microstructure comprising martensite and austenite in the inoculated alloys. Specifically, the proportion of the smallest grains (<span><math><mo>≤</mo></math></span>2 μm) increased significantly, rising from 24.6 % in the SS CX sample with 1 wt% TiC to 29.3 % in the SS CX sample with 2 wt% TiC. This grain refinement significantly reduced corrosion susceptibility and enhanced the overall corrosion resistance of the alloy. In this context, the charge transfer resistance of 2.8 × 10⁶ Ω·cm² observed for L-PBF SS CX increased by 18 % and 71 % in samples containing 1 wt% and 2 wt% TiC, respectively. Similarly, the corrosion current densities of the L-PBF SS CX samples with 1 wt% and 2 wt% TiC were one and two orders of magnitude lower, respectively, than those of the non-inoculated counterpart. Moreover, the refined microstructure facilitated the formation of a more uniform and defect-free passive film, further improving the corrosion resistance of TiC-inoculated L-PBF SS CX.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"717 ","pages":"Article 136800"},"PeriodicalIF":4.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143760808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Method leveraging the ouzo effect to finely disperse natural resinous extracts in water","authors":"Julien Monteil,&nbsp;Isaura Caceres,&nbsp;Abdessattar Hadj-Sassi,&nbsp;Fernando Leal-Calderon","doi":"10.1016/j.colsurfa.2025.136807","DOIUrl":"10.1016/j.colsurfa.2025.136807","url":null,"abstract":"<div><div>Numerous studies have investigated the Ouzo effect in pure compounds, but its application to complex mixtures with practical potential remains largely unexplored. Many natural resinous substances are challenging to handle at low temperatures due to their water insolubility and unfavorable rheological properties, making emulsification difficult. We developed aqueous dispersions by first preparing a hydroalcoholic extract containing 2.5 to 20 wt% resin, then adding water to induce the Ouzo effect, forming micro- and submicron-sized resin-rich droplets. Gum Arabic stabilized the dispersion, while ethanol was removed at 35°C via reduced-pressure distillation, decreasing from approximately 0.15 bar in the initial stages to 0.06 bar. This process yielded dispersions containing 10 % resin and an equal amount of Gum Arabic. The higher polydispersity observed in our systems, compared to pure compounds reported in the literature, likely arises from the complex molecular composition of resins, leading to varying degrees of supersaturation with respect to the antisolvent and to different sizes. We demonstrate that this emulsification method is applicable to resins derived from propolis, poplar buds, and birch pitch. Dispersing these resinous substances in an aqueous phase could enhance their usability as final products with the aim of valorizing their antioxidant and bactericidal potential.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"717 ","pages":"Article 136807"},"PeriodicalIF":4.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143760895","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":"A facile surface modification of ammonium polyphosphate with boron-based compound to reduce its particle size and improve the flame retardancy and anti-dripping of polylactic acid resin","authors":"Shengchao Huang ,&nbsp;Xiaosui Chen ,&nbsp;Yuhang Huang ,&nbsp;Yipei Zhang ,&nbsp;Shuzheng Liu ,&nbsp;Aiqing Zhang ,&nbsp;Wei Liu","doi":"10.1016/j.colsurfa.2025.136781","DOIUrl":"10.1016/j.colsurfa.2025.136781","url":null,"abstract":"<div><div>Polylactic acid (PLA) resin has inherent deficiencies like high flammability and severe melt-dripping, which limit its wide application. To address these issues, a novel APP-based flame retardant (MAPP) with reduced particle size was facilely fabricated by grafting 9, 10-Dihydro −9-oxa −10-phosphaphenanthrene −10-oxide (DOPO) and 4-formylphenylboronic acid (FPBA) onto the surface of raw APP via an ion exchange reaction, achieving a high char yield of 31.3 % in N₂ atmosphere. The synergistic effects of phosphorus-, nitrogen- and boron-containing compounds improved the flame retardancy and anti-dripping performance of PLA/MAPP composites efficiently. Notably, the PLA/6 %MAPP composite exhibited the highest limiting oxygen index (LOI) value of 30.1 % and a UL-94 V-0 rating without melt dripping. Its cone calorimeter results also presented the lowest peak heat release rate (PHRR) and total heat release (THR), which were 19.8 % and 23.2 % lower than those in pure PLA, respectively. The gas- and condensed-phase product analysis revealed combined flame retardancy mechanisms including inert gas dilution, free-radical quenching, catalytic charring, and physical barrier effect. Importantly, the incorporation of MAPP did not significantly compromise the tensile strength (92.0 % of pure PLA) but enhanced the impact strength (31.9 %) of the relating PLA composites. This favorable balance between flame retardancy and mechanical properties in PLA/MAPP composites offers a viable approach to broaden the practical application of PLA.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"717 ","pages":"Article 136781"},"PeriodicalIF":4.9,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740127","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":"Preparation of bulk Au/ZnO/Co3O4-calcined copper foam photocatalyst in reactor for continuous flow degradation of tetracycline hydrochloride","authors":"Li Sun ,&nbsp;Ziqi Liu ,&nbsp;Yuan Zhi ,&nbsp;Hua Zhang ,&nbsp;Binlin Dou ,&nbsp;Yuejin Shan ,&nbsp;Weijia Huang","doi":"10.1016/j.colsurfa.2025.136770","DOIUrl":"10.1016/j.colsurfa.2025.136770","url":null,"abstract":"<div><div>At present, the continuous flow (C-F) degradation in reactors cannot be used to remove tetracycline hydrochloride (TCH) in wastewater due to the weak activity of adopted photocatalysts. Herein, a highly active photocatalyst, bulk Au/ZnO/Co₃O₄-calcined copper foam (AZC-C), is controllably prepared. The AZC-C photocatalyst possesses special surface morphology and displays exceptional photocatalytic performance in the C-F degradation of TCH. The enhanced photocatalytic activity of AZC-C can be attributed to the synergistic action of the active component (Au/ZnO/Co₃O₄) and the support (calcined copper foam). Selecting optimized AZC-C photocatalysts as packing materials, the reactor with unique structure is constructed. Based on the reactor, the C-F degradation of TCH is firstly effectively performed. Subsequently, a strategy on the tandem reactor module is put forward to further raise the removal efficiency for TCH. Utilizing the tandem reactor module with five reactors, the removal rate of TCH and the rate constant for the C-F degradation of TCH can be drastically improved to 600 mL/h and 0.5817 min⁻¹, respectively. Noteworthy, the conversion efficiency (CE) of TCH reaches up 100 %. Additionally, the tandem reactor module exhibits desirable operating stability (24 h) and reusability (6 mon) in the C-F degradation of TCH. Obviously, the above tandem reactor module can be widely used in the field of water decontamination.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"717 ","pages":"Article 136770"},"PeriodicalIF":4.9,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143760897","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":"Construction of fluorescent hydrogels using a novel water-soluble aggregation-induced emission fluorophore for information encryption and de-identification","authors":"Peng Yu ,&nbsp;Dexin Kou ,&nbsp;Yanru Zhao ,&nbsp;Xiufang Liu ,&nbsp;Xinjin Li ,&nbsp;Xiangye Li ,&nbsp;Zengdian Zhao ,&nbsp;Yunhui Dong","doi":"10.1016/j.colsurfa.2025.136767","DOIUrl":"10.1016/j.colsurfa.2025.136767","url":null,"abstract":"<div><div>Fluorescent hydrogels constructed by integrating aggregation-induced emission (AIE) fluorophores have emerged as promising materials for information encryption. Due to the hydrophobic properties of AIEgens, they tend to aggregate in hydrophilic matrix of the hydrogel, which is beneficial for their fluorescent properties but detrimental to their uniform distribution within the gel network. To solve this problem, we have ingeniously developed a water-soluble aggregation-induced emission (AIE) fluorophore that can integrate with the hydrogel matrix, to deepen the application of hydrogel in information security by stimuli-responsiveness. The prepared AIE fluorophores not only possess high quantum yield, but also carry a remarkable ability to self-assemble in water, amplifying AIE emission. After combining with the hydrogel matrix composed of gelatin, carboxymethyl cellulose (CMC) and sodium tetraborate (Na₂B₄O₇), the fluorophores still maintain the stimuli-responsiveness to metal ions, solvents and pH, endowing the hydrogel with tunable fluorescence properties. Additionally, the tailored multi-channel units allow for more secure information encryption and de-identification. This study may advance the expanded utilization of AIE fluorophores in the realm of hydrogel-based materials.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"717 ","pages":"Article 136767"},"PeriodicalIF":4.9,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143760798","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":"Room temperature CO sensor based on Au-decorated ZnO nanosheets","authors":"Lin Liu ,&nbsp;Jinbo Zhao ,&nbsp;Shiqiang Li ,&nbsp;Fei Liu ,&nbsp;Zhidong Jin ,&nbsp;Jiurong Liu ,&nbsp;Wenjing Du ,&nbsp;Fenglong Wang ,&nbsp;Zhou Wang ,&nbsp;Lili Wu","doi":"10.1016/j.colsurfa.2025.136799","DOIUrl":"10.1016/j.colsurfa.2025.136799","url":null,"abstract":"<div><div>As a flammable and explosive gas, CO poses substantial safety risk when it is detected by sensors operating at elevated temperatures. Consequently, the room temperature CO sensor based on Au-decorated ZnO nanosheets were successfully prepared by hydrothermal method and NaBH₄ reduction method, with an ultra-high response (139.75) towards 100 ppm CO, which is about 43 times higher than that of pristine ZnO. Moreover, the sensor exhibits a low detection limit (300 ppb) and a fast response/recovery speed (61/61 s to 100 ppm CO). According to <em>in situ</em> diffuse reflectance infrared Fourier transform spectroscopy (<em>In-situ</em> DRIFTS), the introduction of Au nanoparticles significantly enhances the adsorption kinetics of CO and fundamentally alters its oxidation mechanism, promoting a more direct pathway for CO oxidation, suggesting that Au nanoparticles play a crucial role in the adsorption and dissociation of gas molecules on ZnO surface. Furthermore, the formation of Schottky barriers modulates the carrier transport and the thickness of the space charge layer which are also contribute to the improve of room temperature gas-sensitive performance. Therefore, the Au-decorated ZnO sensor is promising for CO monitoring in various fields such as integration into personal protective equipment, part of an environmental monitoring network, early fire detection systems and safety monitoring in industrial environments.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"717 ","pages":"Article 136799"},"PeriodicalIF":4.9,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143760802","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":"In-situ polymerization strategy for conductive polymer poly(3,4-ethylenedioxythiophene) on bimetallic MOF to enhance electrochemical detection of toxic hydroquinone in industrial wastewater and tap water","authors":"Ming Sun ,&nbsp;Li Zhang ,&nbsp;Shaobin Li ,&nbsp;Fengbo Li ,&nbsp;Yu Han ,&nbsp;Tingting Yu ,&nbsp;Zixu Lin","doi":"10.1016/j.colsurfa.2025.136793","DOIUrl":"10.1016/j.colsurfa.2025.136793","url":null,"abstract":"<div><div>Hydroquinone is an organic pollutant that poses significant risks to the environment and human health, rapid and effective monitoring is essential. In this work, a simple and efficient electrochemical sensor based on poly(3,4-ethylenedioxythiophene) coated onto a bimetallic metal-organic framework (ZnCo-ZIF-67) was constructed by using an in-situ polymerization strategy at room temperature. The electrochemical sensor demonstrates excellent performance with a broad linear range (2–212 μM, 212–662 μM), high sensitivity (0.51 μA·μM⁻¹·cm⁻²), and a low limit of detection of 0.468 μM. The sensor exhibits excellent selectivity, repeatability, reproducibility, and anti-interference performance. Moreover, it effectively detects hydroquinone in both tap water and industrial wastewater, achieving recoveries ranging from 97.30 % to 102.83 %, with relative standard deviations (RSD) below 3.80 %. These results highlight the significant potential of the sensor for monitoring hydroquinone in environmental water systems.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"717 ","pages":"Article 136793"},"PeriodicalIF":4.9,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740128","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":"Static and dynamic surface properties of mixed non-ionic surfactant/cholesterol monolayers as niosome shell models","authors":"Daniil I. Krylov,&nbsp;Vladimir V. Arslanov","doi":"10.1016/j.colsurfa.2025.136771","DOIUrl":"10.1016/j.colsurfa.2025.136771","url":null,"abstract":"<div><div>This work focuses on the study of the thermodynamic and rheological properties of mixed monolayers of non-ionic surfactants with cholesterol, which are models for the bilayer shells of niosomes. In contrast to many traditional surfactants, Spans and Tweens, due to their easy self-assembly, can, like lipids, form stable monolayers at the air-water interface, bilayer structures on solid substrates and high-quality vesicles (niosomes). Thermodynamic (surface pressure-area compression isotherms and surface compressibility modulus) and dynamic characteristics (surface dilational modulus and its elastic and viscous components) of mixed monolayers at the air-water interface were performed. The role of each component of the Span/Tween and Span/Tween/Chol mixtures and the degree of saturation of the hydrocarbon chain in realising the mechanical properties of the systems has been revealed. The high values of surface dilational viscosity allow the monolayer to be considered as a viscoelastic system with the ability to dissipate more energy than the elastic systems.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"717 ","pages":"Article 136771"},"PeriodicalIF":4.9,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143760893","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}