Resources Chemicals and Materials最新文献

{"title":"Active zinc selenide nanocatalysts induced by crystal phase engineering for enhanced sulfur redox kinetics","authors":"Songjie He,&nbsp;Pei Chen,&nbsp;Jiayi Yu,&nbsp;Juan Yang","doi":"10.1016/j.recm.2026.100189","DOIUrl":"10.1016/j.recm.2026.100189","url":null,"abstract":"<div><div>The shuttle effect of lithium polysulfides (LiPSs) and the slow sulfur reduction kinetics seriously hinder the practical application of lithium-sulfur (Li-S) batteries, and the development of efficient electrocatalysts is an effective strategy to solve the above problems. Controlling the phase composition of electrocatalysts through crystal phase engineering is a useful strategy to improve the catalytic activity of electrocatalysts. Herein, crystal phase engineering is reported by regulating the phase composition of zinc selenide (ZnSe) to enhance the electrochemical performance of Li-S batteries. By tuning the ratio of ZIF-8 to SeO₂, the unconventional hexagonal phase was successfully introduced into the cubic ZnSe host (HC-ZnSe). Experimental studies and analyses have shown that HC-ZnSe can capture LiPSs and accelerate sulfur conversion more effectively than pure cubic ZnSe. As a result, the Li-S batteries with the optimized HC-ZnSe-4 modified separator exhibit an improved rate performance of 612 mAh g⁻¹ at 2 C, and long-term cycling stability with 0.034% capacity decay per cycle over 1000 cycles at 1 C. Moreover, a high reversible areal capacity of 6.1 mAh cm⁻² can be achieved over 200 cycles even with sulfur loading as high as 6.8 mg cm⁻². This work demonstrates that crystal phase engineering is a promising strategy for optimizing catalyst performance for Li-S batteries.</div></div>","PeriodicalId":101081,"journal":{"name":"Resources Chemicals and Materials","volume":"5 3","pages":"Article 100189"},"PeriodicalIF":10.4,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148917322","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Carbon chain growth from methanol to ethanol: A review of thermocatalytic mechanisms and strategies","authors":"Jiao Liu,&nbsp;Jiaming Lin,&nbsp;Junrong Yue,&nbsp;Duo Sun,&nbsp;Tiejun Wang","doi":"10.1016/j.recm.2026.100170","DOIUrl":"10.1016/j.recm.2026.100170","url":null,"abstract":"<div><div>Ethanol as a vital fuel and chemical platform faces sustainability and resource constrains in its conventional production from food crops. Thermocatalytic conversion of methanol, particularly green methanol derived from CO₂ or biomass to ethanol (MTE) offers a promising alternative. This review provides a critical and systematic analysis of four predominant thermocatalytic MTE routes in which dimethyl oxalate (DMO), methyl acetate (MA), acetic acid (AA), and formaldehyde (FA) are the main intermediate product, respectively. The carbonylation-dependent routes (DMO, MA, AA) achieve high ethanol selectivity (&gt;90 %) in the downstream hydrogenation step, predominantly over Cu-based catalysts where Cu⁰/Cu⁺ synergy is crucial. However, their practical potential is primarily constrained by rapid catalyst deactivation (e.g., coking in zeolites) or reliance on corrosive promoters in the upstream carbonylation step. In contrast, the FA-mediated route follows a distinct, atom-economical pathway but presents a more complex catalytic landscape. It suffers from low intermediate selectivity (e.g., to glycolaldehyde) during the C-C coupling and faces further selectivity losses in the hydrogenation of highly oxygenated intermediates, typically resulting in ethanol yields below 50 %. A comparative technological assessment reveals that the MA route with its integrated three-step process currently represents the most commercially advanced and industrially demonstrated MTE technology. The DMO route is mature for ethylene glycol production while the AA route leverages established unit operations. By elucidating the underlying catalytic mechanisms and structure-performance relationships, this review establishes a foundational framework for the rational design of stable and selective catalysts in sustainable ethanol synthesis.</div></div>","PeriodicalId":101081,"journal":{"name":"Resources Chemicals and Materials","volume":"5 3","pages":"Article 100170"},"PeriodicalIF":10.4,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148917367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Surface modification of natural magnetic particles with silica and trimethoxy[3-(phenylamino)propyl]silane for enhanced chloramphenicol and ciprofloxacin adsorption","authors":"Johnson Nune Naat,&nbsp;Suyanta Suyanta,&nbsp;Nuryono Nuryono","doi":"10.1016/j.recm.2026.100173","DOIUrl":"10.1016/j.recm.2026.100173","url":null,"abstract":"<div><div>Antibiotic contamination, particularly chloramphenicol (CAP) and ciprofloxacin (CIP), in aquatic environments contributes to the spread of antimicrobial resistance genes (AMRs), posing a global health threat. Adsorption has emerged as an effective, low-cost, and simple method for removing these antibiotics. This study reports the surface modification of natural magnetic particles coated with silica and trimethoxy[3-(phenylamino)propyl]silane (NMP@SiO₂/TMPS) for the adsorption of CAP and CIP. TMPS was selected because it possesses a phenylamino group providing both aromatic and amine functionalities, enabling interactions such as electron donor–acceptor (EDA), π–π, n–π, hydrophobic, and hydrogen bonding. The TMPS concentration was varied at 1.5, 3.0, and 7.5 mmol for 0.5 g NMP and 2 mL sodium silicate solution. The sol–gel method was used to synthesize the adsorbent material. Characterisation of the adsorbent included FTIR, XRD, SEM–EDX mapping, VSM, and BET analysis. Optimal adsorption was achieved at pH 6 for CAP and at pH 5 for CIP, with contact times of 90 min and 60 min, respectively. The highest adsorption capacity was observed with NMP@SiO₂/TMPS(3.0), reaching 87.11 mg g^–1 for CAP and 161.17 mg g^–1 for CIP at a concentration of 350 mg L^–1. Kinetic studies indicates that CAP adsorption follows the pseudo-second-order (PSO) model, whereas CIP adsorption is best described by the Elovich model. For both antibiotics, the Redlich–Peterson isotherm provides the best fit to equilibrium data. Thermodynamic analysis reveals that the adsorption is exothermic, spontaneous, and accompanied by an increase in system disorder. The successful preparation of NMP@SiO₂/TMPS demonstrates its potential as an alternative adsorbent for the adsorption and desorption of antibiotics, advancing pharmaceutical wastewater treatment technology.</div></div>","PeriodicalId":101081,"journal":{"name":"Resources Chemicals and Materials","volume":"5 3","pages":"Article 100173"},"PeriodicalIF":10.4,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148917368","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Improvements on mechanical properties and formability of rolled Mg-Al and Mg-Zn alloy sheets by texture control: A review","authors":"Yinuo Liu,&nbsp;Zijian Yu,&nbsp;Zexiong Li,&nbsp;Hongxing Liang,&nbsp;Ke Liu,&nbsp;Wenbo Du","doi":"10.1016/j.recm.2026.100171","DOIUrl":"10.1016/j.recm.2026.100171","url":null,"abstract":"<div><div>Magnesium alloy sheets generally exhibit a strong basal texture, which leads to poor strength–ductility synergy, pronounced anisotropy, and insufficient formability. These drawbacks limit the large-scale industrial application of magnesium alloy sheets. The regulation of texture, especially in texture intensity and components, plays a crucial role in enhancing the overall mechanical performance of magnesium alloy sheets. Alloying (such as the addition of Ca, Zn, and rare earth elements), recrystallization mechanisms (including particle-stimulated nucleation, twin-induced recrystallization, and shear band-induced recrystallization), and grain boundary segregation can largely affect the texture of magnesium alloy sheets. In addition, rolling parameters such as rolling temperature, rolling speed, and rolling reduction, as well as special rolling techniques including cross rolling, differential speed rolling, and hard-plate rolling, can also significantly affect the texture intensity and texture components. This review systematically summarizes the research progress on the high-performance Mg-Al and Mg-Zn alloy sheets, focusing on: (1) the influence of texture on the mechanical properties and formability; (2) the influence of alloying, recrystallization mechanism and grain boundary segregation on texture; and (3) the influence of rolling processes on texture. It also provides an outlook on the future development of rolled magnesium alloy sheets with high strength–ductility synergy, low anisotropy and high formability.</div></div>","PeriodicalId":101081,"journal":{"name":"Resources Chemicals and Materials","volume":"5 3","pages":"Article 100171"},"PeriodicalIF":10.4,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148917366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Solvent-free glycerol hydrogenolysis through skeletal copper catalyst","authors":"Teerapat Hasakul,&nbsp;Penjit Srinophakun,&nbsp;Anusith Thanapimmetha,&nbsp;Khemmathin Lueangwattanapong,&nbsp;Nutchapon Chiarasumran,&nbsp;Artitaya Srisakunchan,&nbsp;Dussadee Rattanaphra,&nbsp;Wilasinee Kingkam,&nbsp;Maythee Saisriyoot","doi":"10.1016/j.recm.2026.100174","DOIUrl":"10.1016/j.recm.2026.100174","url":null,"abstract":"<div><div>Glycerol hydrogenolysis represents a promising route for the valorization of biodiesel-derived glycerol into propylene glycol; however, efficient operation under solvent-free conditions remains challenging due to mass-transfer limitations and competing reaction pathways. In this study, skeletal copper catalysts were prepared via Cu-Zn alloy precipitation followed by controlled, selective leaching, in which Zn served as a sacrificial component to generate a porous Cu framework with enhanced surface accessibility.</div><div>The influence of leaching time on catalyst composition, porosity, reducibility, and catalytic performance was systematically investigated. Under solvent-free glycerol hydrogenolysis conditions, the optimally leached skeletal Cu catalyst exhibited glycerol conversion of up to 85.4% and propylene glycol selectivity of up to 83.5%, placing its performance among the highest reported for Cu-based catalysts operating without external solvent. Recycling experiments demonstrated stable catalytic performance over multiple reaction cycles.</div><div>Gas chromatography–mass spectrometry analysis confirmed acetol as a key reaction intermediate, supporting a reaction pathway dominated by glycerol dehydration followed by hydrogenation to propylene glycol. Although direct acidity characterization was not conducted, the observed catalytic behavior is interpreted as consistent with the presence of residual Zn-derived species that may introduce Lewis-acidic functionality, in conjunction with metallic Cu sites responsible for hydrogenation. The mechanistic interpretations presented are based on catalyst composition, reaction behavior, and literature precedent.</div><div>This work demonstrates that skeletal Cu catalysts derived from Cu-Zn dealloying provide an effective and sustainable platform for solvent-free glycerol hydrogenolysis and offers new insights into structure–performance relationships relevant to Cu-based biomass conversion catalysts.</div></div>","PeriodicalId":101081,"journal":{"name":"Resources Chemicals and Materials","volume":"5 3","pages":"Article 100174"},"PeriodicalIF":10.4,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148917321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Outside Back Cover","authors":"","doi":"10.1016/S2772-4433(26)00061-9","DOIUrl":"10.1016/S2772-4433(26)00061-9","url":null,"abstract":"","PeriodicalId":101081,"journal":{"name":"Resources Chemicals and Materials","volume":"5 3","pages":"Article 100230"},"PeriodicalIF":10.4,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148917323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Advances in copolymers based on polyvinylidene fluoride (PVDF) and their composites for piezoelectric energy harvesting","authors":"Irene O. Riwa,&nbsp;Andrew T. Banyikwa,&nbsp;Rene Costa,&nbsp;Albert Veved,&nbsp;Numbury Surendra Babu,&nbsp;Mtabazi G. Sahini","doi":"10.1016/j.recm.2025.100124","DOIUrl":"10.1016/j.recm.2025.100124","url":null,"abstract":"<div><div>Polyvinylidene fluoride (PVDF) is among the most promising piezoelectric polymers due to its attractive properties such as piezoelectricity, light weight, high flexibility, thermal stability and chemical resistance. The polymer has potential for harvesting of ambient energy and the associated secondary applications. This review discusses the potentials of PVDF and its copolymers and composites consisting of a variety of fillers such as metal oxides, organic/inorganic lead halides and carbon based nanofillers. A summary of recent advancements in materials development, processing, and applications is presented, along with a discussion of the challenges and future outlook. Enhancement of crystallinity and β–phase formation, hence the piezoelectricity in PVDF-based materials is discussed in detail. Also covered is the use of computational methods in understanding of the processing-structure-property relations in PVDF-based materials – density functional theory (DFT), molecular dynamics (MD), finite element analysis (FEA) and phase field method (PFM). Despite the progress made in improving the piezoelectric properties of PVDF-based materials, the piezoelectric properties are still low. The highest piezoelectric constant that has been achieved so far for PVDF is 30 pC/N, relative to 550 pC/N for PZT. Efforts are still needed to improve the piezoresponse of these flexible piezoelectric polymers for energy harvesting, particularly for environmental monitoring as well as the wearable and implantable devices.</div></div>","PeriodicalId":101081,"journal":{"name":"Resources Chemicals and Materials","volume":"5 3","pages":"Article 100124"},"PeriodicalIF":10.4,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148917358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sustainable production of high-density magnesia from low-grade magnesite via a novel two-stage fluidized bed chlorination-sintering process","authors":"Ting Li,&nbsp;Xiao Qi,&nbsp;Liangliang Fu,&nbsp;Xu Zou,&nbsp;Longyu Lyu,&nbsp;Zhennan Han,&nbsp;Guangwen Xu,&nbsp;Dingrong Bai","doi":"10.1016/j.recm.2025.100168","DOIUrl":"10.1016/j.recm.2025.100168","url":null,"abstract":"<div><div>High-purity, densified magnesia (HPDM) is a crucial refractory material for various high-temperature industrial applications. However, the naturally occurring high-grade magnesite ores required for HPDM production are rapidly depleting due to their overconsumption over the years. For the sustainable HPDM production, this study proposes an innovative two-stage fluidized bed process to produce HPDM from currently abundant low-grade magnesite ores. The first fluidized bed reactor operates at 700 °C using hydrogen chloride (HCl) as the fluidizing gas. This stage removes iron (Fe) by selectively chlorinating it into volatile chlorides (FeCl₃), while converting calcium (Ca) into CaCl_2, which remains with MgO in the chlorinated intermediates. These intermediates are subsequently dechlorinated and sintered in the second fluidized bed at 1600 °C to produce HPDM. Thermodynamic analysis was performed to guide optimization of reaction conditions, which was subsequently validated by experiments. Results reveal that HCl preferentially reacts with CaO and Fe₂O₃ at 700 °C. When a higher-purity magnesite flotation concentrate is used as raw material, the final HPDM product is found to meet industrial standards for high-performance magnesia, characterized by greater than 98% MgO purity and more than 98% densification. This work establishes a feasible and efficient route for valorizing low-grade magnesite, offering significant economic and environmental advantages over conventional methods.</div></div>","PeriodicalId":101081,"journal":{"name":"Resources Chemicals and Materials","volume":"5 3","pages":"Article 100168"},"PeriodicalIF":10.4,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148917365","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Paper-supported skeleton for ultrahigh strength and thinness conductive gel polymer electrolytes towards zinc-air batteries","authors":"Qiang Wang, Zihao Wang, Jinshan Zhang, Zihao Wang, Shanshan Liu, Cong Li, Dawei Zhao","doi":"10.1016/j.recm.2026.100218","DOIUrl":"https://doi.org/10.1016/j.recm.2026.100218","url":null,"abstract":"The dense cellulose fiber network, enriched with hydroxyl groups and hydrogen bonds, endows paper with exceptional mechanical strength and dimensional stability even under alkaline conditions. In this study, paper derived from hardwood pulp was explored as a robust skeleton for constructing advanced alkaline gel polymer electrolytes (AGPEs). The cellulose fiber-based network offers a highly interconnected and durable 3D scaffold. By performing in-situ free-radical polymerization of acrylamide (AM) within the paper matrix, followed by freeze-thaw cycling of a PAM/PVA (polyacrylamide/poly vinyl alcohol) hybrid gel and subsequent KOH (potassium hydroxide) immersion, a novel paper-supported alkaline gel polymer electrolyte (PS-AGPE) was fabricated. ​​The paper skeleton effectively restrained structural retraction and thickening caused by entropic elasticity during polymerization, resulting in an ultrathin membrane of only 200 μm.​​ The resultant PS-AGPE exhibited ultrahigh tensile strength (8.20 MPa), outstanding flexibility, exceptional resistance to alkaline swelling, and achieved a high ionic conductivity of 177.43 mS·cm-1 in 10 M KOH. When applied in flexible zinc-air batteries, the PS-AGPE delivered an open-circuit voltage of 1.51 V, an energy efficiency of 67.2%, and a remarkable stable discharge duration of 841.4 minutes. This work provides a strategy for designing ultrathin, mechanically strong, and flexible energy storage devices using readily available paper.","PeriodicalId":101081,"journal":{"name":"Resources Chemicals and Materials","volume":"1 1","pages":"100218-100218"},"PeriodicalIF":0.0,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772443326000498/pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148861191","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Wood-derived Co@CoO/BNC bifunctional electrocatalyst for high-efficient zinc-air batteries","authors":"Jiawei Zhang ,&nbsp;Zhiqiang Yang ,&nbsp;Ming Li,&nbsp;Shixin Yu,&nbsp;Xingze Yang,&nbsp;Liyuan Gong,&nbsp;Shuo Dou","doi":"10.1016/j.recm.2025.100127","DOIUrl":"10.1016/j.recm.2025.100127","url":null,"abstract":"<div><div>The utilization of wood-derived porous carbon as catalytic electrodes in metal-air batteries has garnered significant attention. Although extensive efforts have focused on developing and optimizing active sites, the insufficient electrical conductivity of wood-derived carbon-based electrodes remains a frequently overlooked challenge. In this study, we successfully constructed boron and nitrogen co-doped Co@CoO/BNC composite through multidimensional structural and compositional synergy, demonstrating exceptional catalytic activity. Specifically, ZIF-67 was confined in situ within wood cell structure to derive carbon materials with controllable growth of Co@CoO nanoparticles, preserving the hierarchical porous structure to ensure superior mass and electron transport. Furthermore, boron and nitrogen co-doping generated B-N-C, which modulated the electronic structure of metal centers and induced high-density topological defects in the carbon matrix, synergistically enhancing catalytic activity. The Co@CoO/BNC composite demonstrated outstanding bifunctional catalytic performance for both oxygen reduction reaction (ORR, half-wave potential E_1/₂ = 850 mV) and oxygen evolution reaction (OER, overpotential of 310 mV at 10 mA cm⁻²). Notably, the narrow potential gap of 715 mV between ORR and OER significantly surpassed that of commercial Pt/C + RuO₂ catalysts. Moreover, the as-prepared Co@CoO/BNC architecture also exhibited remarkable stability. When employed as an air cathode in zinc-air batteries, it delivered a specific capacity of 958.5 mA h <em>g</em>⁻¹ and maintained exceptional cycling stability for over 300 h. This work provides critical insights into the rational design of carbon-based bifunctional oxygen electrocatalysts and highlights the high-value utilization of forest biomass-derived materials in renewable electrochemical energy conversion systems.</div></div>","PeriodicalId":101081,"journal":{"name":"Resources Chemicals and Materials","volume":"5 1","pages":"Article 100127"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146081284","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}