Advanced Membranes最新文献

{"title":"Acid-stable nanofiltration membranes: Emerging materials for sustainable separation in harsh and extreme conditions","authors":"Kayode Hassan Lasisi ,&nbsp;Xing Wu ,&nbsp;Kaisong Zhang ,&nbsp;Robert W. Field","doi":"10.1016/j.advmem.2025.100169","DOIUrl":"10.1016/j.advmem.2025.100169","url":null,"abstract":"<div><div>Acid-stable nanofiltration (ASNF) membranes have emerged as a transformative technology for enabling efficient and selective separations in chemically aggressive environments encountered across various industrial sectors. Applications such as acid mine drainage treatment, copper smelting and refining, steel pickling, hydrometallurgy, biomass processing, and resource recovery require membrane systems that can withstand extreme pH levels and elevated temperatures. This review provides critical insights into the current state of ASNF membranes, particularly those developed at the bench scale, and highlights the operational limitations of conventional membranes under such harsh conditions. It examines recent progress in ASNF membrane fabrication/material design strategies, and performance metrics in extreme environments alongside the chemical mechanisms that underpin their durability. Additionally, their applications in acidic wastewater separation and recovery are examined. Challenges encountered in their development and application, with prevailing research gaps including limited long-term stability data, scalability constraints, and the absence of standardized evaluation protocols are highlighted. Finally, perspectives for future studies in academia as well as industry are recommended, including molecular-level material engineering, selective nanomaterial integration, and data-driven design approaches. By bridging fundamental membrane science with industrial relevance, this review underscores the vital role of ASNF membranes in advancing sustainable separation technologies to achieve both industrial and ecological benefits.</div></div>","PeriodicalId":100033,"journal":{"name":"Advanced Membranes","volume":"5 ","pages":"Article 100169"},"PeriodicalIF":9.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145048272","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}

{"title":"Robust positively charged polyurea nanofiltration membranes with acid resistance for efficient lithium extraction and recovery","authors":"Qin Shen ,&nbsp;Mengmeng Fang ,&nbsp;Wenshuo Cui ,&nbsp;Chuanjie Fang ,&nbsp;Zhikan Yao ,&nbsp;Liping Zhu","doi":"10.1016/j.advmem.2025.100134","DOIUrl":"10.1016/j.advmem.2025.100134","url":null,"abstract":"<div><div>Given the growing demand for lithium in energy storage and electric vehicle industries, the development of acid-resistant membranes for efficient lithium extraction from brine and recycling of spent lithium-ion batteries is crucial for advancing sustainable and scalable resource recovery technologies. Herein, a strong acid-tolerant and positively charged polyurea (PU) nanofiltration (NF) membrane was fabricated via the interfacial polymerization of toluene-2, 4-diisocyanate (TDI) monomers with poly(allylamine) (PAA) monomers with a polyethersulfone ultrafiltration membrane as the substrate. The newly-developed typical PU NF membrane performed high cation-cation separation selectivity (mixed-salt separation factor: 16.6 for Li⁺/Mg²⁺, 19.3 for Li⁺/Ni²⁺, 11.3 for Li⁺/Co²⁺, and 15.7 for Li⁺/Mn²⁺) even if exposed to 10 ​wt% H₂SO₄ solution for 96 ​h. The high cation separation accuracy is attributed to the narrow positively-charged ion sieving channels constructed with TDI and PAA as building blocks. The urea units containing abundant bidentate hydrogen bonds and electron-rich dinitrogen atoms is responsible for the excellent acid tolerance of the PU membranes. This work has the potential to contribute to more sustainable and cost-effective lithium recovery from both brine and discarded cathode materials, making it a crucial step toward scaling up these technologies for industrial applications.</div></div>","PeriodicalId":100033,"journal":{"name":"Advanced Membranes","volume":"5 ","pages":"Article 100134"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143422083","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":"Electrospun nanofiber membrane of Piper beetle loaded PVDF/PAN for medical mask applications: psychochemical characteristics, antibacterial and air filter test","authors":"Ida Sriyanti ,&nbsp;Muhammad Rama Almafie ,&nbsp;Meutia Kamilatun Nuha Ap Idjan ,&nbsp;Rahma Dani ,&nbsp;Indah Solihah ,&nbsp;Edi Syafri ,&nbsp;Yulianti ,&nbsp;Leni Marlina","doi":"10.1016/j.advmem.2025.100149","DOIUrl":"10.1016/j.advmem.2025.100149","url":null,"abstract":"<div><div>Face masks are designed to protect the wearer from environmental hazards, such as volatile organic contaminants and suspended particulate matter (PM), which can cause asthma and anemia and affect the nervous system. This paper reports the development of a novel electrospun nanofiber membrane composite based on polyvinylidene fluoride (PVDF), polyacrylonitrile (PAN), and Piper betle extract (PLE) for potential applications in medical masks. Nanofiber membranes were fabricated via electrospinning and characterized for their physicochemical properties, antibacterial activity, and air filtration performance. SEM analysis revealed a bead-free nanofiber morphology with average diameters ranging from to 764–856 ​nm. The composite membranes exhibited high tensile strength over 34.92 ​± ​1.34 ​MPa, elongation at break of 1.24 ​% ​± ​0.031, and Young's modulus of 28.07 ​± ​1.33 ​MPa. Water contact angle measurements above 90° indicate the hydrophobic nature of the material. FTIR analysis confirmed the presence of phenolic compounds on the nanofiber surface, suggesting the incorporation of flavonoids, tannins, essential oils, alkaloids, and catechins from the PLE. The nanofiber membranes demonstrated effective antibacterial activity against <em>S. aureus</em> and <em>P. aeruginosa</em>, with inhibition zones of 19.65 ​± ​0.07 and 7.19 ​± ​0.08 ​mm, respectively, for the membrane with the highest PLE content. Air filtration tests revealed that the optimized membrane achieved a high filtration efficiency of 99.11 ​%, with a relatively low pressure drop of 80.28 ​Pa and a high-quality factor of 0.1428 ​Pa⁻¹. The enhanced filtration properties and low filtration resistance of the PVDF/PAN/PLE electrospun membranes demonstrated their potential for the efficient removal of particulate matter and microorganisms in air filtration applications, particularly in the development of high-performance and multifunctional medical masks.</div></div>","PeriodicalId":100033,"journal":{"name":"Advanced Membranes","volume":"5 ","pages":"Article 100149"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143941812","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}

{"title":"Incorporating polyvinylpyrrolidone modified HOF-101 into Pebax membranes for efficient toluene/N2 separation","authors":"Jiating Liu ,&nbsp;Jiashuai Zhao ,&nbsp;Yuhan Wang ,&nbsp;Mengqi Bie ,&nbsp;Yuhang Guo ,&nbsp;Yanxiong Ren ,&nbsp;Ming Xue ,&nbsp;Chuanruo Yang ,&nbsp;Fusheng Pan ,&nbsp;Taotao Gao ,&nbsp;Zhongyi Jiang","doi":"10.1016/j.advmem.2025.100127","DOIUrl":"10.1016/j.advmem.2025.100127","url":null,"abstract":"<div><div>Hybrid membranes hold great promise in the recovery of volatile organic compounds (VOCs). Hydrogen-bonded organic framework (HOF), a class of hydrogen-bonded crystalline porous materials with high affinity toward VOCs, holds great potential as an emerging filler. In this study, highly stable HOF-101 modified by Polyvinylpyrrolidone (PVP) and introduced into polyether block amide (Pebax®1657) to prepare hybrid membrane. The π-conjugated large aromatic ring structure of HOF-101 promoted the adsorption of toluene molecules. The interaction between the Pebax polymer chain segments and PVP on the modified HOF-101 surface enhanced their interfacial compatibility. At a PVP@HOF-101 content of 1 ​wt%, the hybrid membrane exhibited optimal separation performance for a 2.2 ​mol% toluene/N₂ mixture, with a permeability of 1.51 ​× ​10⁻⁶ ​mol ​μm ​m⁻² s⁻¹ ​Pa⁻¹ for toluene, a selectivity of 954 and excellent stability over 120 ​h in the long-term experiment. This study demonstrates the application of HOF-based hybrid membranes for VOCs recovery.</div></div>","PeriodicalId":100033,"journal":{"name":"Advanced Membranes","volume":"5 ","pages":"Article 100127"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143099932","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":"Electrostatically assembled core-shell particles and their reaction sintering for SiC membranes with improved oil/water separation and thermal regeneration efficiency","authors":"Junyou Li ,&nbsp;Qilin Gu ,&nbsp;Huiqin Zhang ,&nbsp;Zhaoxiang Zhong ,&nbsp;Yiqun Fan ,&nbsp;Weihong Xing","doi":"10.1016/j.advmem.2025.100148","DOIUrl":"10.1016/j.advmem.2025.100148","url":null,"abstract":"<div><div>Porous SiC membranes prepared through the reaction sintering between the additive and surface oxidation generated silica have gained increasing attention in the fields of oil-water separation. Previous efforts mainly focused on the types and contents of additives incorporated by physically mixing process, while their distribution on the microstructure and separation performance of SiC membranes has been rarely involved. This work proposed to prepare SiC membranes by uniformly coating AlOOH sol on SiC particles via the electrostatic interaction and the subsequent reaction sintering of the derived SiC@alumina core-shell particles. It is found that the surface coating enabled the homogeneous dispersion of the additives in SiC powder matrix, which not only facilitated the reactive sintering process and notably reduced the amount of residual SiO₂ in SiC membranes, but also homogenized the pore structure. Also, the oxidation pathway of SiC had been altered, which substantially retarded the oxidation degree. Impressively, the as-prepared SiC membranes exhibited 20 ​% improvement in alkali resistance, and enhanced oil-in-water emulsion separation efficiency when compared with those prepared by the conventional mechanical mixing method. Besides, the fouled SiC membranes prepared from the core-shell units can be more efficiently regenerated by using the emerging Joule heating technique. The present work provides a facile and effective pathway to the preparation of high-performance SiC membranes through the reaction sintering of rationally designed core-shell particles for high-efficient separation.</div></div>","PeriodicalId":100033,"journal":{"name":"Advanced Membranes","volume":"5 ","pages":"Article 100148"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143932179","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}

{"title":"Three-in-one polyimide-based blended membrane for Upgrading helium separation performance and physical aging resistance","authors":"Bingbing Gao ,&nbsp;Yiran Peng ,&nbsp;Ming Wu ,&nbsp;Hua Ma ,&nbsp;Jianchao Sun ,&nbsp;Peng Zhang ,&nbsp;Xingzhong Cao ,&nbsp;Like Ouyang ,&nbsp;Xiaobin Fu ,&nbsp;Chunfang Zhang ,&nbsp;Yunxiang Bai ,&nbsp;Lijun Liang ,&nbsp;Yang Liu ,&nbsp;Liangliang Dong","doi":"10.1016/j.advmem.2025.100139","DOIUrl":"10.1016/j.advmem.2025.100139","url":null,"abstract":"<div><div>Polyimide membranes have attracted considerable attention for gas separation applications; however, achieving efficient helium (He) separation remains a significant challenge due to the low fractional free volume (<em>FFV</em>) and poorly controlled pore size distribution. Here, we report a novel three-in-one polyimide-based blended membrane constructed from a polymer (6FDA-TFMB) and alkynyl-based polyimide (EBPA-TB) matrix via thermal crosslinking. By carefully designing membrane synthesis and structure, the resulting membrane achieves the “1 ​+ ​1&gt;2” effect: (i) high He selectivity derived from reinforced interphase adhesion and size-sieving ability due to the hydrogen bonding and similar structure between 6FDA-TFMB and EBPA-TB; (ii) high He permeability derived from the rigid cross-linked network distorting the EBPA-TB chain packing and generating additional free volume; (iii) high anti-aging performance derived from the thermal crosslinking preventing microstructural rearrangements. The optimal membrane an unprecedented combination of high He permeability (51.24 Barrer), excellent He/N₂ selectivity (146.40) and remarkable aging resistance (less than 3.97 % of permeability decrease over 50 days), outperforming the performance of state-of-the-art polyimide-based blended membranes for He purification. This three-in-one blended membrane construction strategy provides a general toolbox for the development of next-generation, high-performance blended membranes with desirable performance for diverse industrial applications.</div></div>","PeriodicalId":100033,"journal":{"name":"Advanced Membranes","volume":"5 ","pages":"Article 100139"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143726203","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":"Review on molecular modeling-facilitated design of porous membranes","authors":"Wei Yang ,&nbsp;Meina Xiong ,&nbsp;Dongliang Jin,&nbsp;Jing Zhong","doi":"10.1016/j.advmem.2025.100145","DOIUrl":"10.1016/j.advmem.2025.100145","url":null,"abstract":"<div><div>Molecular modeling techniques are regarded as an effective approach to study various advanced membranes at the microscale. These investigations of porous membranes are devoted to better understanding their chemical structures, pore topology and morphology, transport/permeation mechanisms, and the structure-activity relationship. This review provides an overview of current research on the molecular simulations of the structure, gas-/liquid-phase transport, and phase behaviors in porous membranes. In more detail, quantum chemistry is first introduced to probe the structures of porous membranes at the molecular/atomistic level. In this part, the pore topology estimated by using the geometric algorithm is also presented. Transport properties of porous membranes determined using molecular dynamics are then summarized. To study the formation kinetics of membranes and the diffusion kinetics of fluids within membrane’s pores, free energy calculations are discussed. Moreover, the phase behaviors involved in the membrane process by Monte Carlo simulations are presented. Finally, a brief discussion of the multiscale simulations is provided to comprehensively understand the structure-activity relationship. These theoretical works pave constructive ways for the design of functional membranes used for separation and purification, energy harvesting and storage, petrochemical engineering, and so on.</div></div>","PeriodicalId":100033,"journal":{"name":"Advanced Membranes","volume":"5 ","pages":"Article 100145"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143843773","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}

{"title":"Endowing the nanostructured ion channels of anion conductive membranes with negative charge to boost the Cl−/SO42− ion separation via electrodialysis","authors":"Wenlong Ding ,&nbsp;Haoyu Liu ,&nbsp;Jiayi Liao ,&nbsp;Tongtong Wang ,&nbsp;Dongze Li ,&nbsp;Yu Xu ,&nbsp;Shiyu Zhou ,&nbsp;Zhiqiang Wu ,&nbsp;Wenhui Shi ,&nbsp;Jiangnan Shen ,&nbsp;Junbin Liao","doi":"10.1016/j.advmem.2025.100128","DOIUrl":"10.1016/j.advmem.2025.100128","url":null,"abstract":"<div><div>Construction of homogeneous polymer ion-exchange membranes (IEMs) with suitable ion transport channels and stable structures is crucial to the separation of mono-/multi-valent anions. Amphoteric ion-exchange membrane (AIEM) is a special type of IEM that possesses unique properties due to the presence of both anion exchange groups and cation exchange groups. In this work, we have grafted 1-bromoheptane and 3-bromopropanesulfonate onto the poly(aryl ether sulfone) chain through nucleophilic substitution reactions. Unlike the IEM attaching different ion-change functional groups onto one side-chain, this kind of AIEM bears two kinds of ion-change functional groups on dual side-chains. The results show that the as-prepared AIEMs could maintain low water absorption (&lt;20 ​%) and swelling ratios (&lt;11 ​%). The optimal surface area resistance is 6.31 ​Ω∙cm². The perm-selectivity (Cl⁻/SO₄²⁻) of the optimized PAES-TA/BS-0.85 AIEMs in a binary mixed solution system at 2.5 ​mA∙cm² could be achieved as high as 67.46, which is much higher than commercial ACS IEMs under the same conditions. Small Angle X-ray scattering reveals a distinct phase separation pattern within the AIEM matrix, which is due to the introduction of sulfonates to increase the hydrophilicity of the side-chains. The combined effects of pore size screening and electrostatic repulsion render the high selectivity of as-prepared AIEMs.</div></div>","PeriodicalId":100033,"journal":{"name":"Advanced Membranes","volume":"5 ","pages":"Article 100128"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143156621","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":"Hybrid energy harvesting enabled by a covalent organic framework membrane","authors":"Jiaming Yi,&nbsp;Zhuozhi Lai,&nbsp;Qing Guo,&nbsp;Zhiwei Xing,&nbsp;Qi Sun","doi":"10.1016/j.advmem.2025.100130","DOIUrl":"10.1016/j.advmem.2025.100130","url":null,"abstract":"<div><div>The integration of water and thermal energy harvesting presents a promising solution to the intermittency issues associated with individual energy sources. In this study, we show a covalent organic framework (COF) membrane featuring subnanometer, one-dimensional ionic channels, which demonstrate remarkable stability in both acidic and saline environments. The membrane exhibits exceptional permselectivity across various electrolyte solutions, enabling efficient osmotic energy harvesting from proton gradients via reverse electrodialysis. Under a 50-fold concentration gradient of H₂SO₄, the membrane achieved a peak output power density of 97.1 ​W ​m⁻². Furthermore, the membrane facilitates thermo-osmotic energy conversion by selectively screening ionic charges driven by combined salinity and temperature gradients. Under simulated estuarine salinity conditions and a 30 ​K temperature gradient, the COF membrane achieved a maximum output power density of 91.4 ​W ​m⁻²—an 18-fold increase compared to the commercial benchmark (5 ​W ​m⁻²). This study underscores the significant potential of COF membranes for efficient energy conversion, enabling the effective harvesting of untapped osmotic and low-grade heat energy.</div></div>","PeriodicalId":100033,"journal":{"name":"Advanced Membranes","volume":"5 ","pages":"Article 100130"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143156620","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":"Robust methoxy-based covalent organic frameworks membranes enable efficient near-molecular-weight selectivity","authors":"Yanqing Xu ,&nbsp;Jiaqi Xiong ,&nbsp;Chenfei Lin ,&nbsp;Yixiang Yu ,&nbsp;Qite Qiu ,&nbsp;Junbin Liao ,&nbsp;Huimin Ruan ,&nbsp;Arcadio Sotto ,&nbsp;Jiangnan Shen","doi":"10.1016/j.advmem.2024.100112","DOIUrl":"10.1016/j.advmem.2024.100112","url":null,"abstract":"<div><div>Uniform pore size is essential for molecular sieving in separation membranes. Traditional nanofiltration (NF) polymer membranes struggle with precise structure control due to random chain packing and rapid cross-linking, leading to varied pore sizes and poor molecular discrimination. Covalent organic frameworks (COFs) offer ordered porous structures for enhanced molecular selectivity. We synthesized composite COFs membranes with triphenylamine derivatives through interfacial polymerization, adjusting pore channel functional groups to achieve high water permeance and size-selective molecule retention. The TFB-OMe-TAPA COFs membrane demonstrated sharp rejection profiles, separating solutes of different molecular sizes. A three-stage cascade process was used to fractionate binary molecules with varying charges, achieving a separation factor of 26.7 for heterogeneous charge molecules. This work reveals the selectivity of COF membranes in near-molecular-weight systems, expanding their potential in molecular separations.</div></div>","PeriodicalId":100033,"journal":{"name":"Advanced Membranes","volume":"5 ","pages":"Article 100112"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143099934","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}