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Preparation of 3D carbon nanonets from SDBS in concentrated salt system 浓盐体系中SDBS制备三维碳纳米
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-07-05 DOI: 10.1016/j.matlet.2025.139034
Shimin Dang, Haichao Li, Baojin Yang, Ze Liu
{"title":"Preparation of 3D carbon nanonets from SDBS in concentrated salt system","authors":"Shimin Dang,&nbsp;Haichao Li,&nbsp;Baojin Yang,&nbsp;Ze Liu","doi":"10.1016/j.matlet.2025.139034","DOIUrl":"10.1016/j.matlet.2025.139034","url":null,"abstract":"<div><div>The synthesis protocol utilized sodium dodecylbenzene sulfonate (80 × CMC) as carbon precursor combined with 100 g NaCl to construct a concentrated SDBS/NaCl templating system. Controlled carbonization at 800 °C for 2 h produced 3D carbon nanonets, which were systematically characterized through scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), Fourier-transform infrared spectroscopy (FT-IR), Raman spectroscopy, and X-ray diffraction (XRD). Structural analyses revealed an amorphous carbon matrix with hierarchical porosity and partial graphitic ordering, while infrared spectroscopy identified characteristic surface functional groups through distinct vibrational modes: C<img>C (1475 cm<sup>−1</sup>), C<img>O (1725 cm<sup>−1</sup>), and C<img>O (1033.5 cm<sup>−1</sup>) bonds. The 3D carbon nanonets demonstrated methylene blue adsorption capacities reaching 158 mg/g under 500 mg/L concentration conditions. Notably, the NaCl template exhibited recyclability through aqueous dissolution–recrystallization cycles, enabling repeatable batch synthesis of three-dimensional carbon networks in high-salinity environments. This template recovery mechanism provides critical technical parameters for scaling production processes while maintaining structural consistency across fabrication batches, establishing fundamental guidelines for industrial implementation of salt-templated carbon nanomaterial manufacturing. The SDBS/NaCl surfactant-assisted salt templating system was innovatively employed to engineer carbon nanonets, establishing a novel methodology for nanostructured material synthesis.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"399 ","pages":"Article 139034"},"PeriodicalIF":2.7,"publicationDate":"2025-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144570952","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synergistic enhancement of strength and ductility in laser direct energy deposited Ti-6Al-4V alloy via dual-microalloying with Cu and Nb Cu和Nb双微合金化对激光直接能量沉积Ti-6Al-4V合金强度和塑性的协同增强
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-07-05 DOI: 10.1016/j.matlet.2025.139046
Tao Kuang , Chi Zhang , Yang Liu , Mingyong Jia , Yaojun Lin , Wenze Li , Fei Chen
{"title":"Synergistic enhancement of strength and ductility in laser direct energy deposited Ti-6Al-4V alloy via dual-microalloying with Cu and Nb","authors":"Tao Kuang ,&nbsp;Chi Zhang ,&nbsp;Yang Liu ,&nbsp;Mingyong Jia ,&nbsp;Yaojun Lin ,&nbsp;Wenze Li ,&nbsp;Fei Chen","doi":"10.1016/j.matlet.2025.139046","DOIUrl":"10.1016/j.matlet.2025.139046","url":null,"abstract":"<div><div>A dual-microalloying strategy is proposed to overcome the strength-ductility trade-off in laser-directed energy deposited (LDED) Ti-6Al-4V alloys. The Cu-Nb co-modified alloy, fabricated via LDED, achieves simultaneous α-lath refinement and reticulated structure due to intergranular Ti<sub>2</sub>Cu precipitation along β grain boundaries and the solute segregation effect. This unique microstructure configuration enables notable tensile properties (ultimate tensile strength (UTS): 1182.3 MPa, elongation: 8.6 %), demonstrating an exceptional strength-ductility synergy with 21.2 % and 17.8 % enhancements, respectively. The dual-phase strengthening mechanism originating from Cu-induced intermetallic precipitation and Nb-mediated β-phase stabilization establishes a new paradigm for additive manufacturing (AM) of high-performance titanium alloys through compositionally-tailored, in-situ precipitation engineering.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"399 ","pages":"Article 139046"},"PeriodicalIF":2.7,"publicationDate":"2025-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144571022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Dissoluble AZ31 magnesium alloy anode with WO3-coated Mo cathode for transient batteries in sustainable water splitting 可溶AZ31镁合金阳极，wo3包覆Mo阴极，用于瞬态电池持续水分解
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-07-05 DOI: 10.1016/j.matlet.2025.139030
Nagaraju Mukurala , Hyeon‐Bin Jo , Dhananjay Mishra , Niraj Kumar , Taehui Na , Sung Hun Jin
{"title":"Dissoluble AZ31 magnesium alloy anode with WO3-coated Mo cathode for transient batteries in sustainable water splitting","authors":"Nagaraju Mukurala ,&nbsp;Hyeon‐Bin Jo ,&nbsp;Dhananjay Mishra ,&nbsp;Niraj Kumar ,&nbsp;Taehui Na ,&nbsp;Sung Hun Jin","doi":"10.1016/j.matlet.2025.139030","DOIUrl":"10.1016/j.matlet.2025.139030","url":null,"abstract":"<div><div>Herein, we report the development of a magnesium alloy (AZ31)-tungsten oxide (WO<sub>3</sub>) transient battery (TB) utilizing biodegradable tape as structural support. The battery comprises an Mg alloy anode, a WO<sub>3</sub>-coated Mo foil (WO<sub>3</sub>/Mo) cathode, and a sodium alginate with phosphate-buffered saline (PBS) gel electrolyte. It delivers a charge capacity of 10.5 mAh/cm<sup>2</sup>, an energy density of 13.96 mWh/cm<sup>2</sup>, and an open-circuit voltage of 1.59 V at a discharge current density of 0.05 mA/cm<sup>2</sup>. The battery operates stably for ∼ 8 days, though its performance declines threefold under higher discharge rates. It degrades almost completely in soil within six weeks. When integrated into a two-electrode water-splitting system, the battery successfully facilitates electrolysis, generating hydrogen and oxygen gases while inducing a pH shift from neutral to alkaline within ten minutes. These results highlight its potential for localized pH regulation in environmental settings, such as restoring ocean pH after oil spills, while also serving as a sustainable source of renewable hydrogen energy.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"399 ","pages":"Article 139030"},"PeriodicalIF":2.7,"publicationDate":"2025-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144563050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Preparation of mesoporous Cu-doped LaFeO3 perovskites with high catalytic efficiency for doxorubicin removal 高催化脱除阿霉素的介孔cu掺杂LaFeO3钙钛矿的制备
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-07-05 DOI: 10.1016/j.matlet.2025.139054
Alice Leonel , Marina de Souza , Daniel Soares , Manuel Houmard , Eduardo Nunes
{"title":"Preparation of mesoporous Cu-doped LaFeO3 perovskites with high catalytic efficiency for doxorubicin removal","authors":"Alice Leonel ,&nbsp;Marina de Souza ,&nbsp;Daniel Soares ,&nbsp;Manuel Houmard ,&nbsp;Eduardo Nunes","doi":"10.1016/j.matlet.2025.139054","DOIUrl":"10.1016/j.matlet.2025.139054","url":null,"abstract":"<div><div>In this study, La(CuFe)O<sub>3</sub> perovskites were prepared by both the conventional citrate and nanocasting methods to investigate the influence of mesoporosity on the structural and catalytic properties of these materials. The mesoporous perovskite exhibited high specific surface area and promising catalytic performance in the degradation of doxorubicin. This is the first time that La(CuFe)O<sub>3</sub> perovskites have been used in the advanced oxidation of this drug.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"399 ","pages":"Article 139054"},"PeriodicalIF":2.7,"publicationDate":"2025-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144570614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Coarse precipitates are dislocation generation sources in metal 粗相是金属中位错产生的来源
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-07-04 DOI: 10.1016/j.matlet.2025.139050
A.G. Kostryzhev, O.O. Marenych
{"title":"Coarse precipitates are dislocation generation sources in metal","authors":"A.G. Kostryzhev,&nbsp;O.O. Marenych","doi":"10.1016/j.matlet.2025.139050","DOIUrl":"10.1016/j.matlet.2025.139050","url":null,"abstract":"<div><div>Precipitation strengthening mechanism contributed to development of numerous alloys. Its effectiveness is associated with strong dislocation pinning by fine particles of high number density homogeneously dispersed through the alloy matrix. However, the role of coarse precipitates is not only underestimated but frequently considered as detrimental. In this work we discover the dislocation generation mechanism on the interface between the coarse particles and the primary phase. An increased dislocation density originating from the course (&gt;100 nm) particles has a significant impact on the level of precipitation strengthening associated with the fine (&lt;10 nm) particles.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"399 ","pages":"Article 139050"},"PeriodicalIF":2.7,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144581270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synthesis of WMoTaNb nanopowders by molten salt-assisted magnesiothermic reduction 熔盐辅助镁热还原法制备WMoTaNb纳米粉体
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-07-03 DOI: 10.1016/j.matlet.2025.139043
Baoguang Zhang , Yuanping Huang , Wenbin Gao , Jian Wang , Zhifu Huang
{"title":"Synthesis of WMoTaNb nanopowders by molten salt-assisted magnesiothermic reduction","authors":"Baoguang Zhang ,&nbsp;Yuanping Huang ,&nbsp;Wenbin Gao ,&nbsp;Jian Wang ,&nbsp;Zhifu Huang","doi":"10.1016/j.matlet.2025.139043","DOIUrl":"10.1016/j.matlet.2025.139043","url":null,"abstract":"<div><div>A novel synthetic approach is reported for producing WMoTaNb refractory high-entropy alloy nanopowders via a combination of chemical co-precipitation, calcination, and molten salt-assisted magnesiothermic reduction. The formation of (W,Mo,Ta,Nb)O<sub>x</sub> composite nanopowders enabled in-situ synthesis of WMoTaNb through enhanced interfacial reactivity and shortened atomic diffusion pathways. Subsequent molten salt-assisted magnesiothermic reduction under continuous heating facilitated synergistic enhancement of magnesium-mediated atomic diffusion, thereby enabling the formation of a uniform WMoTaNb high-entropy phase. The as-synthesized nanopowders exhibited a narrow size distribution, with the majority of particles measuring below 60 nm in diameter. This methodology demonstrates the effectiveness of integrating reactive oxide precursors and molten salt chemistry to achieve controlled synthesis of refractory high-entropy alloys at the nanoscale.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"399 ","pages":"Article 139043"},"PeriodicalIF":2.7,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144557120","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A simple silanization pretreatment to effectively inhibit the lateral growth of nickel electrodeposits for multilayer chip inductors 采用简单的硅烷化预处理，可有效抑制多层片式电感中镍镀层的横向生长
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-07-03 DOI: 10.1016/j.matlet.2025.139042
Lixia Yang , Zhuocheng Wei , Jingjing Wu , Yuanqiang Xiao , Mingcan Cao , Qu-ao Li , Jun-e Qu , JunXia Wang
{"title":"A simple silanization pretreatment to effectively inhibit the lateral growth of nickel electrodeposits for multilayer chip inductors","authors":"Lixia Yang ,&nbsp;Zhuocheng Wei ,&nbsp;Jingjing Wu ,&nbsp;Yuanqiang Xiao ,&nbsp;Mingcan Cao ,&nbsp;Qu-ao Li ,&nbsp;Jun-e Qu ,&nbsp;JunXia Wang","doi":"10.1016/j.matlet.2025.139042","DOIUrl":"10.1016/j.matlet.2025.139042","url":null,"abstract":"<div><div>The lateral growth of nickel electrodeposits on ferrite surfaces of multilayer chip inductors (MLCI) is a key problem for the preparation of Ag/Ni/Sn terminal electrode in barrel plating, especially in acidic bath under high current density. Simple silanization is tentatively used to the pretreatment of MLCI aiming at inhibiting the lateral growth of nickel, the inhibiting effect and its influence on the electrodeposition behavior and welding performance are investigated. The hydrolyzed γ-GPS and BTSE are selectively adsorbed on the ferrite surfaces, and the optimized formulation is determined. The industrial field experiments prove that the lateral growth ratio (R<sub>lg</sub>) dramatically decreases from 41.29% to 0 after silanization, and that nickel electrodeposits increases from 1.4  to 2.0 μm with good welding performance.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"399 ","pages":"Article 139042"},"PeriodicalIF":2.7,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144563048","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of deformation-induced precipitation of B2 phase on superplasticity of Al0.5CoCrFeNiCu high-entropy alloy 变形诱导析出B2相对Al0.5CoCrFeNiCu高熵合金超塑性的影响
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-07-03 DOI: 10.1016/j.matlet.2025.139041
Tao Duan, Jun Li, Guotong Zou, Shijie Chen, Lingying Ye
{"title":"Effect of deformation-induced precipitation of B2 phase on superplasticity of Al0.5CoCrFeNiCu high-entropy alloy","authors":"Tao Duan,&nbsp;Jun Li,&nbsp;Guotong Zou,&nbsp;Shijie Chen,&nbsp;Lingying Ye","doi":"10.1016/j.matlet.2025.139041","DOIUrl":"10.1016/j.matlet.2025.139041","url":null,"abstract":"<div><div>The deformation-induced precipitation of B2 phase in high-entropy alloy (HEAs) generally inhibits grain growth, thereby enhancing superplasticity performance. In this study, a duplex fine-grained Al<sub>0.5</sub>CoCrFeNiCu HEA with a grain size of 2.30 μm was prepared via large-deformation cold rolling followed by annealing treatment. Excellent TRIP (transformation-induced plasticity) effect was observed at 950 °C and 0.0005 s<sup>–1</sup>, achieving a maximum elongation of 1280 %. The fine B2 phase initially inhibits grain growth, enhancing superplasticity during the early stages of deformation. However, as deformation continued, the coarsening of the B2 phase gradually inhibited grain boundary sliding in the matrix, resulting in a decline in the strain rate sensitivity index (m value), as well as secondary stress hardening and macroscopic necking of the specimen. This indicates that the B2 phase plays opposite roles at different stages of superplastic deformation.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"399 ","pages":"Article 139041"},"PeriodicalIF":2.7,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144563052","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Strontium-enriched phosphate coating on fused filament fabrication 3D printed alumina scaffolds 富锶磷酸盐熔丝涂层制备3D打印氧化铝支架
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-07-03 DOI: 10.1016/j.matlet.2025.139033
E.Y. Nagata , F.C. Nunes , L. Santana , Z.C. Silveira , J.A. Ferreira , C.E. Ambrósio , E.M.J.A. Pallone
{"title":"Strontium-enriched phosphate coating on fused filament fabrication 3D printed alumina scaffolds","authors":"E.Y. Nagata ,&nbsp;F.C. Nunes ,&nbsp;L. Santana ,&nbsp;Z.C. Silveira ,&nbsp;J.A. Ferreira ,&nbsp;C.E. Ambrósio ,&nbsp;E.M.J.A. Pallone","doi":"10.1016/j.matlet.2025.139033","DOIUrl":"10.1016/j.matlet.2025.139033","url":null,"abstract":"<div><div>This study explored fused filament fabrication (FFF) of alumina (Al<sub>2</sub>O<sub>3</sub>) scaffolds using commercial filament with a polyolefin-based binder for bone substitute applications. Scaffolds, fabricated via a low-cost 3D printer, underwent acetone and thermal debinding, followed by sintering. Micro-CT of uncoated scaffolds revealed high porosity, including interconnected macropores and microporosity, suitable for osseointegration, osteoblast growth, and vascularization. Uncoated scaffolds exhibited high compressive strength, comparable to trabecular bone. Biomimetic coating with calcium and strontium phosphates via simulated body fluid immersion, characterized by XRD, FTIR, and SEM, is expected to enhance bioactivity, promoting cell-material interactions. The scaffolds’ shape fidelity and scalable fabrication suggest strong potential for tissue engineering applications.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"399 ","pages":"Article 139033"},"PeriodicalIF":2.7,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144557118","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ceria-doped ZnO photoanode sensitized with cyanopyridine dye for dye- sensitized solar cell applications 用氰吡啶染料敏化铈掺杂ZnO光阳极的染料敏化太阳能电池研究
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-07-03 DOI: 10.1016/j.matlet.2025.139044
B. Hemavathi , H.A. Deepa , P. Aruna , Jagannathan Krishnan
{"title":"Ceria-doped ZnO photoanode sensitized with cyanopyridine dye for dye- sensitized solar cell applications","authors":"B. Hemavathi ,&nbsp;H.A. Deepa ,&nbsp;P. Aruna ,&nbsp;Jagannathan Krishnan","doi":"10.1016/j.matlet.2025.139044","DOIUrl":"10.1016/j.matlet.2025.139044","url":null,"abstract":"<div><div>This research paper presents a systematic study on the preparation of ceria-doped ZnO (CDZ) nanomaterials for use as photoanodes in dye-sensitized solar cells (DSSCs). It introduces a novel organic dye, CCTRh, characterized by a D-A-π-A configuration and free from metallic components. The study involved doping ZnO with varying concentrations of CeO<sub>2</sub> (3%, 4%, and 5%) and characterizing the resulting CDZ using various techniques, including UV–Vis spectroscopy, photoluminescence, Density Functional Theory (DFT), electrochemical investigations, X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray spectroscopy, and Brunauer-Emmett-Teller (BET) analysis. The findings indicate that the 4% CDZ exhibited the most optimized properties, achieving an efficiency of 2.54% when paired with the CCTRh dye, thus demonstrating the potential of CDZ as an effective photoanode material for DSSC applications.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"399 ","pages":"Article 139044"},"PeriodicalIF":2.7,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144557137","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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