Surfaces and Interfaces最新文献

{"title":"Anticorrosive studies of Chitosan/TiO2/g-C3N4 composite on mild steel in saline and acidic conditions","authors":"Daizy Doctor ,&nbsp;Arun Varghese ,&nbsp;Kalathiparambil Rajendra Pai Sunajadevi ,&nbsp;Dephan Pinheiro ,&nbsp;Mothi Krishna Mohan","doi":"10.1016/j.surfin.2025.106464","DOIUrl":"10.1016/j.surfin.2025.106464","url":null,"abstract":"<div><div>This work focuses on the synthesis of a nanocomposite coating that enhances the anticorrosive property of the metal. The nanocomposite under study is a synergistic blend of chitosan, titanium dioxide (TiO₂), and graphitic carbon nitride (g-C₃N₄), effectively challenging the corrosion problem faced by various industries. The environment-friendly and natural properties of chitosan, the photocatalytic activity of TiO₂ nanoparticles, and the efficient electrical conductivity of g-C₃N₄ make the composite an ideal material for studying anticorrosion activity. Experimental techniques like XPS, XRD, HR-TEM, FE-SEM, TGA, BET surface area, and FTIR analysis have been employed to characterize the nanocomposite. Weight loss studies indicate the efficacy of the nanocomposite on mild steel in 3.5 % NaCl and 1 M HCl. The corrosion behavior of the nanocomposite is examined by Tafel curves and electrochemical impedance analysis. The results indicate that the inhibition efficiency of chitosan/TiO₂/g-C₃N₄ nanocomposite is 99 % with a charge transfer resistance value of 152.43 Ω , which is more effective in the corrosion inhibition of mild steel than chitosan, TiO₂, and g-C₃N₄ when taken separately. The anticorrosive coating prepared using this composite can be applied on different surfaces under various environmental conditions to reduce corrosion.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":"64 ","pages":"Article 106464"},"PeriodicalIF":5.7,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143829130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Flexible alternating current electroluminescent devices using superstable AgNWs@Nd2O3/PU transparent conductive film as an electrode","authors":"Zhihao Sun ,&nbsp;Yuehui Hu ,&nbsp;Huiwen Liu ,&nbsp;Zhenghang Lü ,&nbsp;Yichuan Chen ,&nbsp;Yefu Hu ,&nbsp;Xinyue Xu ,&nbsp;Jiashun Chen ,&nbsp;Hao Gao","doi":"10.1016/j.surfin.2025.106482","DOIUrl":"10.1016/j.surfin.2025.106482","url":null,"abstract":"<div><div>Silver nanowire transparent conductive film (AgNWs-TCF) has significant value in replacing indium tin oxide transparent conductive films in flexible electronic devices due to their excellent conductivity, transmission, and flexibility properties. However, the current issues of its environmental stability, bending resistance, and waterproof performance restrict commercialization application. In this study, a SnO₂/AgNWs@Nd₂O₃-TCF with a core (AgNWs)-shell (Nd₂O₃) structure was fabricated through a two-step process: First, silver obtained from reduction in NaCl solution was used to softly weld wire-to-wire junctions in the AgNWs network, followed by Nd₂O₃ derived from hydrolysis in NdF₃ solution to encapsulate the AgNWs. The resulting transparent conductive film not only demonstrated excellent optoelectronic performance with a sheet resistance of 11.6 Ω/sq and transmittance of 86.6 %@550 nm, but also exhibited remarkable environmental stability and bending resistance, showing resistance change rates of 24 % after 28 days in ambient air and 4.8 % at a bending radius of 5.5 mm, respectively. After polyurethane resin (PU) encapsulation, the SnO₂/AgNWs@Nd₂O₃/PU-TCF displayed superior waterproof characteristics, maintaining a current of 0.10 A under 4 V voltage even after coating a water layer. Surface roughness analysis revealed that TCFs significantly influence the luminescence properties of AC electroluminescent devices (ACEL). The ACEL device fabricated with low-roughness SnO₂/AgNWs@Nd₂O₃-TCF/PU as a flexible transparent electrode achieved a luminous brightness of 43.11 cd/m² and demonstrated stable bending luminescence performance with negligible changes in brightness uniformity.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":"64 ","pages":"Article 106482"},"PeriodicalIF":5.7,"publicationDate":"2025-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143835297","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"3D TiO2-x and Ag10Si4O13 nanoparticals embedded into 2D thin layer g-C3N4 to construct 3D/2D/3D double Z‐scheme heterojunction for enhanced photocatalytic activity and stability","authors":"Cuixia Li ,&nbsp;Xin Zhang ,&nbsp;Ruilin Zhang ,&nbsp;Anhang Wang ,&nbsp;Man Cheng ,&nbsp;Zhucheng Luan ,&nbsp;Haize Jin","doi":"10.1016/j.surfin.2025.106477","DOIUrl":"10.1016/j.surfin.2025.106477","url":null,"abstract":"<div><div>The construction of heterojunction photocatalytic materials based on semiconductors for environmental remediation has attracted much attention. In this study, an accurate molecular (ion) scale assembly based on two-step sol-gel method was used to achieve the controllable preparation of 3D/2D/3D double Z‐scheme oxygen-deficient TiO₂ (TiO_2-<em>_x</em>)/g-C₃N₄/Ag₁₀Si₄O₁₃ (CTA) heterojunction photocatalyst. The double heterojunction structure increased the photogenerated carrier separation efficiency, enhanced the redox ability and extended the photoresponse range to 701 nm, which significantly improves the photocatalytic activity. As a result, under simulated sunlight and visible light irradiation conditions, the degradation efficiency of CTA (0.5:1) samples for tetracycline hydrochloride (TCH) within 60 min reached 90 % and 86 %, and respectively. In addition, the photocorrosion resistance of Ag₁₀Si₄O₁₃ was greatly improved by using heterojunctions to control photogenerated electrons migrate from the Ag₁₀Si₄O₁₃ conduction band to the g-C₃N₄ valence band, and the CTA showed excellent cyclic service stability. The novel nanostructure control strategy provided an important reference for highly active and stable photocatalysts.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":"64 ","pages":"Article 106477"},"PeriodicalIF":5.7,"publicationDate":"2025-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143835298","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Adsorption mechanism of hexachlorodisilane for low-temperature atomic layer deposition of silicon nitride","authors":"Jiwon Kim,&nbsp;Bonggeun Shong","doi":"10.1016/j.surfin.2025.106470","DOIUrl":"10.1016/j.surfin.2025.106470","url":null,"abstract":"<div><div>Thin films of silicon nitride (SiN_x) are used as dielectric layers, passivation coatings, and barrier layers, which are crucial for enhancing the performance, reliability, and durability of semiconductors and display devices. Due to increasing miniaturization of devices, atomic layer deposition (ALD) of SiN_x is gaining large interest. Especially, thermal ALD of SiN_x at lower temperature is desirable to minimize damage of the substrates and to ensure excellent conformality. While hexachlorodisilane (Si₂Cl₆) is one of few precursors that can enable low-temperature thermal ALD of SiN_x, its surface chemical reaction mechanism has not been clarified yet. In this study, the surface reaction mechanisms of silicon tetrachloride (SiCl₄) and Si₂Cl₆, representative precursors for SiN_x ALD, are compared. Using density functional theory (DFT) calculations, the mechanisms of precursor adsorption on SiN_x surface and subsequent reactions with the counter-reactant NH₃ were investigated. Higher reactivity of Si₂Cl₆ was identified during both the precursor adsorption and removal of Cl by NH₃ co-reactant, attributed to the Si-Si bond present in Si₂Cl₆. Current results suggest that the presence of the direct Si-Si bond within the precursor molecule can be a crucial factor for enabling low-temperature ALD processes.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":"64 ","pages":"Article 106470"},"PeriodicalIF":5.7,"publicationDate":"2025-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143829126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Close atomic surface of stainless steel produced by developed novel green chemical mechanical polishing using silica and Samaria composite abrasives","authors":"Zhuangzhuang Song ,&nbsp;Dong Wang ,&nbsp;Zhenyu Zhang ,&nbsp;Feng Zhao ,&nbsp;Hongxiu Zhou ,&nbsp;Leilei Chen ,&nbsp;Mingjian Liang ,&nbsp;Weiting Liu ,&nbsp;Xiaofei Yang","doi":"10.1016/j.surfin.2025.106474","DOIUrl":"10.1016/j.surfin.2025.106474","url":null,"abstract":"<div><div>Stainless steel is a kind of difficult-to-machine material, because of its work hardening and corrosion resistance. Strong acids, alkalis and toxic substances are often employed in traditional chemical mechanical polishing (CMP), leading to the potential pollution to environment. Even that, surface roughness after conventional CMP on a stainless steel is generally higher than 0.7 nm. This does not satisfy the demand for close atomic surface by high-performance devices. To solve these challenges, a novel green CMP was developed, containing silica, samaria, hydrogen peroxide, malic acid and alanine. After CMP, surface roughness Sa of 0.238 nm is achieved on a stainless steel of 12Cr12Mo at a scanning area of 50 × 50 μm², and material removal rate is 75.26 nm/min. Zeta potential and corrosion current of silica, samaria, and their composite abrasives are -31 mV and 0.708 μA/cm², 17.2 mV and 0.208 μA/cm², and -46.2 mV and 1.935 μA/cm², respectively, indicating the best of composite abrasives for both dispersity and exchange rate of ions among three kinds of ones. Corrosion current of solely malic acid and hydrogen peroxide are 5.127 and 0.249 μA/cm², respectively, while it increased to 9.05 μA/cm² when mixing them together, displaying the synergistic effect between them. After inpouring alanine in the mixed solution, corrosion current decreased to 5.713 μA/cm², showing the inhibition influence on corrosion. X-ray photoelectron spectroscopy demonstrates that hydroxy peroxide oxidized the surface of stainless steel, forming metal oxides. FeO and Fe₃O₄ were dissolved and chelated by malic acid. Fourier transform infrared spectroscopy reveals that hydroxy and carboxylic functional groups chelated with metal ions, and chelating formulas are proposed. Our developed green CMP paved a new way to garner close atomic surface on a stainless steel with work hardening and corrosion resistance.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":"64 ","pages":"Article 106474"},"PeriodicalIF":5.7,"publicationDate":"2025-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143829209","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Theoretical study of the decomposition of methyl formate on copper surface","authors":"Xiaoli Zhang ,&nbsp;Jiuzheng Yin ,&nbsp;Jinyu Tan ,&nbsp;Shiling Wei ,&nbsp;Lidong Zhang ,&nbsp;Lixia Wei","doi":"10.1016/j.surfin.2025.106471","DOIUrl":"10.1016/j.surfin.2025.106471","url":null,"abstract":"<div><div>Ester lubricants have wide industrial applications due to their suitable lubricating properties. However, they may degrade under the high temperatures and with the catalysis of the metal surface. This study employs density functional theory to investigate the effect of a copper surface on the decomposition of methyl formate (MF), a model compound of ester lubricant. The results show that the dehydrogenation of the adsorbed MF (MF*) to produce the adsorbed methoxycarbonyl (COOCH₃*) is the dominant reaction. COOCH₃* then readily dissociates into CO* and CH₃O* by overcoming a low energy barrier of 0.12 eV. Breakages of other bonds should contribute marginally to the decomposition of COOCH₃*, with their high energy barriers. For the practical ester lubricants that are non-formate, the decompositions may be initiated by the adsorptions through the carbonyl oxygen atom on the copper surface. Hence, modifying the structure on the carbonyl side is anticipated to enhance the durability of the ester lubricants.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":"64 ","pages":"Article 106471"},"PeriodicalIF":5.7,"publicationDate":"2025-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143829129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Two-dimensional metallic TPHOD-graphene: surface and interface engineering toward a high-performance anode material for potassium-ion batteries","authors":"Shi-Kai Zhang ,&nbsp;Xiao-Juan Ye ,&nbsp;Xiao-Hong Zheng ,&nbsp;Chun-Sheng Liu","doi":"10.1016/j.surfin.2025.106468","DOIUrl":"10.1016/j.surfin.2025.106468","url":null,"abstract":"<div><div>Potassium-ion batteries (PIBs) show great promise as an attractive alternative to lithium-ion batteries (LIBs), owing to their affordability, safety, and high energy density. However, the lack of suitable anode materials poses a significant challenge to realize high-performance PIBs. By the assembly of acenaphthene (C₁₂H₈) skeletons, we predict a two-dimensional (2D) carbon allotrope named TPHOD-graphene, which is composed of tetragonal, pentagonal, hexagonal, octagonal, and dodecagonal rings. It has excellent dynamical, thermal, and mechanical stability. The metallic nature of the TPHOD-graphene monolayer contributes to excellent conductivity, facilitating rapid electron transport. As an anode material for PIBs, TPHOD-graphene delivers a high theoretical capacity of 930 mAh/g. The low ion diffusion barrier (0.33–0.37 eV) favors good charge-discharge efficiency. Moreover, the moderate intercalation/deintercalation potential effectively mitigates the formation of metal dendrites. The introduction of solvents can boost the adsorption and mobility of K ion on TPHOD-graphene. Furthermore, the presence of vacancy in TPHOD-graphene significantly enhances the K adsorption strength but creates a trapping effect which impedes ion migration. Similar to the monolayer, bilayer TPHOD-graphene maintains the good adsorption and diffusion characteristics of K.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":"64 ","pages":"Article 106468"},"PeriodicalIF":5.7,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143829039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Innovative zirconia surface activation via grit-blasting and post-discharge plasma pretreatment for covalent grafting of organosilanes","authors":"Maxime Provost ,&nbsp;Marie Gressier ,&nbsp;Christine Labrugère ,&nbsp;Jean-Philippe Sarrette ,&nbsp;Nofel Merbahi ,&nbsp;Sandrine Duluard ,&nbsp;Marie-Joelle Menu","doi":"10.1016/j.surfin.2025.106420","DOIUrl":"10.1016/j.surfin.2025.106420","url":null,"abstract":"<div><div>Zirconia is a material of choice due to its superior mechanical properties, high biocompatibility, and excellent chemical stability. The development of durable and effective surface pretreatments for zirconia is essential for expanding its applications in biomedical and dental fields, as well as in areas such as supported catalysis and filter membranes. In this study, we introduce an innovative surface modification technique to improve grafting efficiency on zirconia substrates. This method involves a two-step process: an initial tribochemical pretreatment with glass beads, followed by exposure to an argon-dioxygen post-discharge. Comprehensive characterization of the treated zirconia surfaces was performed using X-ray Photoelectron Spectroscopy (XPS), Scanning Electron Microscopy (SEM), X-ray Diffraction (XRD), Raman spectroscopy, and colorimetric assays. The results indicated that the grafting ratio achieved with this technique is comparable to the most effective methods reported in the literature while micro-cracking and surface phase transition of zirconia typically induced by grit-blasting with commercial particles is limited. These findings suggest that this novel surface modification technique has significant potential for enhancing the durability of grafting on zirconia-based materials.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":"64 ","pages":"Article 106420"},"PeriodicalIF":5.7,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143816613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Interface engineering of BiFeO3 ferro-resistive memories for sustainable high diode current","authors":"Dongfang Chen ,&nbsp;Chao Wang ,&nbsp;Jianwei Lian ,&nbsp;Jun Jiang","doi":"10.1016/j.surfin.2025.106457","DOIUrl":"10.1016/j.surfin.2025.106457","url":null,"abstract":"<div><div>Resistive switching, arising from the polarization modulation of the interfacial Schottky barrier in ferroelectric devices, holds promise for information storage applications. However, the performance reliability of such memory devices faces challenges, especially when the diode current is maximized for rapid data processing. Here, we demonstrate a substantial enhancement in the stability of diode current by meticulously selecting electrodes to establish a defect-free interface. This deliberate design effectively mitigates interfacial charge injection to screen the polarization of the ferroelectric BiFeO₃ thin film, thereby significantly enhancing the performance of the prototype memory devices. The BiFeO₃ devices featuring the epitaxial SrRuO₃ electrodes exhibit excellent stability in terms of coercive voltage and current rectification ratio during alternating pulse cycling while maintaining a high diode current density of 0.83 A/cm² at a bias voltage of -2.2 V. Conversely, metal electrodes facilitates trap formation at the interface for charge injection, which potentially screens the domain switching field and leads to an increased coercive voltage in BiFeO₃ devices. Additionally, injected charges can defuse into the interior of the ferroelectric thin film, precipitating polarization degradation and even device breakdown. This work elucidates the critical role of a defect-free interface in achieving sustainable high diode current for ferro-resistive memory.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":"64 ","pages":"Article 106457"},"PeriodicalIF":5.7,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143824540","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Distinct effects of spark softening on micro-arc oxidized coating growth, wear resistance and corrosion resistance: A comparative study between Ti-Nb-Zr medium entropy alloy and Ti-6Al-4V as substrates","authors":"Shan Huang ,&nbsp;Jing Huang ,&nbsp;Bin Liu ,&nbsp;Yong Liu ,&nbsp;Weijie Fan ,&nbsp;Andong Wang ,&nbsp;Yong Zhang ,&nbsp;Qianli Huang","doi":"10.1016/j.surfin.2025.106416","DOIUrl":"10.1016/j.surfin.2025.106416","url":null,"abstract":"<div><div>The spark softening effect of cathodic current during micro-arc oxidation (MAO) has been recognized as an effective approach to modulate the microstructure and properties of Al-based MAO coatings instead of Ti-based MAO coatings, while its modulatory role on medium entropy alloys (MEAs) is still unknown. In this study, Ti-Nb-Zr (TNZ) MEA and Ti-6Al-4 V (Ti64) were subjected to MAO treatment under constant-current mode with an anodic current set as 0.4 A and cathodic current set as 0, 0.9 or 2 A. The results showed that the cathodic current modulated the microstructure and properties of MAO coatings in a substrate-dependent manner. For Ti64, the involvement of cathodic current resulted in decreased coating thickness, slightly promoted wear resistance and deteriorated corrosion resistance. However, the cathodic current increased the thickness, wear resistance and corrosion resistance of MAO coatings on TNZ MEA. In addition, both Ti64- and TNZ-based MAO coatings exhibited favorable cytocompatibility. The results presented in this work suggest that the involvement of cathodic current during MAO treatment is an effective approach for TNZ-based MAO coatings to achieve enhanced protective effects against wear and corrosion.</div></div>","PeriodicalId":22081,"journal":{"name":"Surfaces and Interfaces","volume":"64 ","pages":"Article 106416"},"PeriodicalIF":5.7,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143816706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}