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Morphological, structural and photoresponse characterization of ZnO nanostructure films deposited on plasma etched silicon substrates 等离子蚀刻硅衬底上ZnO纳米结构薄膜的形态、结构和光响应特性
IF 1.4
Journal of Nanostructures Pub Date : 2020-01-01 DOI: 10.22052/JNS.2020.01.020
B. Abdallah, A. Jazmati, F. Nounou
{"title":"Morphological, structural and photoresponse characterization of ZnO nanostructure films deposited on plasma etched silicon substrates","authors":"B. Abdallah, A. Jazmati, F. Nounou","doi":"10.22052/JNS.2020.01.020","DOIUrl":"https://doi.org/10.22052/JNS.2020.01.020","url":null,"abstract":"ZnO nanostructure films were deposited by radio frequency (RF) magnetron sputtering on etched silicon (100) substrates using dry Ar/SF6 plasma, at two etching times of 5 min and 30 min, and on non etched silicon surface. Energy dispersive X-ray (EDX) technique was employed to investigate the elements contents for etched substrates as well as ZnO films, where it is found to be stoichiometric. Surface and growth evolution of films were explored by scanning electron microscope (SEM) images and found to have morphological development from spherical forms into nanowires with increasing substrate etching time. 2D atomic force microscope (AFM) images clarify this modification of the morphology and roughness values are deduced. Structural study was investigated using X-ray diffraction (XRD) patterns. The films had (002) preferential orientation with various etching time substrates. Optical characterization illustrated a decrease of reflectance with the morphological modification. Photoresponse measurement has been investigated and correlated with the crystallinity.","PeriodicalId":16523,"journal":{"name":"Journal of Nanostructures","volume":"10 1","pages":"185-197"},"PeriodicalIF":1.4,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68411264","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}
引用次数: 2
Barium Oxide nanoparticles with robust catalytic, photocatalytic and humidity sensing properties 氧化钡纳米颗粒具有强大的催化，光催化和湿度传感性能
IF 1.4
Journal of Nanostructures Pub Date : 2020-01-01 DOI: 10.22052/JNS.2020.01.018
R. Renukadevi, R. Sundaram, Kaviyarasu Kasinathan
{"title":"Barium Oxide nanoparticles with robust catalytic, photocatalytic and humidity sensing properties","authors":"R. Renukadevi, R. Sundaram, Kaviyarasu Kasinathan","doi":"10.22052/JNS.2020.01.018","DOIUrl":"https://doi.org/10.22052/JNS.2020.01.018","url":null,"abstract":"Barium Oxide(BaO) nanoparticles were synthesized by simple co-precipitation method and were investigated by the catalytic activity of synthesized barium oxide nanopaticles was enumerated by epoxidation of styrene. The reaction was carried out and the product was obtained at higher efficiency. Particularly, the photocatalytic efficiency was estimated by degradation of Rhodamine-B (RhB) dye using barium oxide nanoparticles under visible light illumination. The degraded dye concentration decreases nearly to zero at 60 minutes of its contact with photocatalyst. The humidity sensing properties of the material was measured by using DC resistance measurement at room temperature that reveals the sensitivity factor of 1926. Barium oxide nanoparticles shows the response and recovery characteristics of 40s and 110s respectively. The dye started to degrade and the concentration of the dye decreases to almost zero at 1 hour of irradiation that was predicted from the degradation rate which was the plot of C/C0. The degradation efficiency was found to be 98% for 1 hour degradation.The evaluation outline on performancebasis revealed that synthesized barium oxide acts as a promising catalyst,photocatalyst and humidity sensing material were reported in detail.","PeriodicalId":16523,"journal":{"name":"Journal of Nanostructures","volume":"10 1","pages":"167-176"},"PeriodicalIF":1.4,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68411565","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}
引用次数: 17
Synthesis of magnetic graphene-Fe3O4 nanocomposites by electrochemical exfoliation method 电化学剥离法制备磁性石墨烯- fe3o4纳米复合材料
IF 1.4
Journal of Nanostructures Pub Date : 2020-01-01 DOI: 10.22052/JNS.2020.01.005
N. Ansari, Zahta Payami
{"title":"Synthesis of magnetic graphene-Fe3O4 nanocomposites by electrochemical exfoliation method","authors":"N. Ansari, Zahta Payami","doi":"10.22052/JNS.2020.01.005","DOIUrl":"https://doi.org/10.22052/JNS.2020.01.005","url":null,"abstract":"Superparamagnetic few-layer graphene nanocomposites (FLG- NCs) can be used for many technological applications, such as solar cells, batteries, touch panels and supercapacitors. In this work, we applied electrochemical exfoliation method as a simple, one step and economical technique to fabricate FLG- NCs. The fabricated Superparamagnetic FLG- NCs were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), field emission scanning electron microscope (FESEM), energy dispersive spectroscopy (EDS) and vibrating sample magnetometer (VSM). Analysis of XRD pattern shows the formation of graphene iron oxide nanocomposites due to the existence of magnetite (Fe3O4) and graphite picks. Hysteresis curve of the sample represents superparamagnetic effect with saturation magnetization, MS=57.3 emu. g-1. The results of XRD and VSM indicate that the size of ferromagnetic particles reduced to critical size to form into superparamagnetic. FLG- Fe3O4 with high saturation magnetization is very useful in hyperthermia, drug delivery, supercapacitors, removal dye, etc.","PeriodicalId":16523,"journal":{"name":"Journal of Nanostructures","volume":"10 1","pages":"39-43"},"PeriodicalIF":1.4,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68410985","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}
引用次数: 5
W-doped nanoporous TiO2 for high performances sensing material toward acetone gas w掺杂纳米多孔TiO2作为丙酮气体的高性能传感材料
IF 1.4
Journal of Nanostructures Pub Date : 2020-01-01 DOI: 10.22052/JNS.2020.01.016
Lihong Wang, Xinxin Xing, N. Chen, Rongjun Zhao, Zidong Wang, Tong Zou, Wang Zhezhe, Yude Wang
{"title":"W-doped nanoporous TiO2 for high performances sensing material toward acetone gas","authors":"Lihong Wang, Xinxin Xing, N. Chen, Rongjun Zhao, Zidong Wang, Tong Zou, Wang Zhezhe, Yude Wang","doi":"10.22052/JNS.2020.01.016","DOIUrl":"https://doi.org/10.22052/JNS.2020.01.016","url":null,"abstract":"W-doped TiO2 with nanoporous structure was synthesized by a one-step low temperature hydrothermal method using TiOSO4 and (NH4)6H2W12O40•xH2O as titanium and tungsten sources. Structure, morphology, specific surface area and chemical state of samples were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). W-doped nanoporous TiO2 samples were used as sensing materials of indirect-heating sensors and their gas-sensing performances were studied to detect acetone. The experimental results show that 7.5% W-doped nanoporous TiO2 can adsorb more oxygen molecules on the surface and provide large amount of active reaction sites on interface to profit reaction between material and gas molecules. The gas sensor based on 7.5% W-doped nanoporous TiO2 exhibits good gas-sensing performances, including high gas response value, shortened response/recovery time and good reproducibility, which make it a promising candidate in acetone detection. Apart from these, the mechanism related to the advanced properties was also investigated and presented.","PeriodicalId":16523,"journal":{"name":"Journal of Nanostructures","volume":"10 1","pages":"148-156"},"PeriodicalIF":1.4,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68411343","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}
引用次数: 3
Investigation of corrosion protection properties of TiO2-CdO nanocomposite coating prepared by sol-gel method on copper 溶胶-凝胶法制备TiO2-CdO纳米复合涂层对铜的防腐性能研究
IF 1.4
Journal of Nanostructures Pub Date : 2020-01-01 DOI: 10.22052/JNS.2020.01.007
Farnaz Hajiyan Pour, M. Behpour, Mehdi Shabani‐Nooshabadi, Y. Jafari
{"title":"Investigation of corrosion protection properties of TiO2-CdO nanocomposite coating prepared by sol-gel method on copper","authors":"Farnaz Hajiyan Pour, M. Behpour, Mehdi Shabani‐Nooshabadi, Y. Jafari","doi":"10.22052/JNS.2020.01.007","DOIUrl":"https://doi.org/10.22052/JNS.2020.01.007","url":null,"abstract":"the Sol–gel nanocomposite coatings have been investigated for copper metal as a potential replacement for the hazardous and banned hexavalent chromate conversion coatings. TiO2–CdO nanocomposite thin films were deposited on copper using the sol–gel method. The sol-gel coatings were prepared using a sol obtained by the hydrolysis and condensation of tetra-o-butyl titanate. They were doped with cadmium oxide inhibitor to provide active corrosion protection. The synthesized coatings were characterized by X-ray diffraction (XRD) and atomic force microscopy (AFM). The anticorrosion performances of TiO2-CdO nanocomposite coatings were investigated in 3.5% NaCl solution by the potentiodynamic polarization technique Tafle and electrochemical impedance spectroscopy (EIS). The potential corrosion increases from -210 mV versus Ag/AgCl (3M) for uncoated copper to -202 mV versus Ag/AgCl (3M) for TiO2-CdO nanocomposite-coated copper electrodes. The results of this study clearly ascertain that the TiO2-CdO nanocomposite has outstanding potential to protect the copper against corrosion in a chloride environment..","PeriodicalId":16523,"journal":{"name":"Journal of Nanostructures","volume":"10 1","pages":"52-63"},"PeriodicalIF":1.4,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68410663","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}
引用次数: 2
Pure and Gd3+, Tb3+ and Ho3+-doped As2Ni3O8: A new visible light induced photocatalyst for the photodegradation of malachite green water pollutant 纯和Gd3+， Tb3+和Ho3+掺杂As2Ni3O8:一种光降解孔雀石绿水污染物的新型可见光诱导光催化剂
IF 1.4
Journal of Nanostructures Pub Date : 2020-01-01 DOI: 10.22052/JNS.2020.01.002
Alireza Hakimyfard, N. Tahmasebi, M. Samimifar, Marzieh Naghizadeh
{"title":"Pure and Gd3+, Tb3+ and Ho3+-doped As2Ni3O8: A new visible light induced photocatalyst for the photodegradation of malachite green water pollutant","authors":"Alireza Hakimyfard, N. Tahmasebi, M. Samimifar, Marzieh Naghizadeh","doi":"10.22052/JNS.2020.01.002","DOIUrl":"https://doi.org/10.22052/JNS.2020.01.002","url":null,"abstract":"Nanostructured doped As2Ni3O8 samples were synthesized via facile one step solid state reactions at 850 °C for 8 h using As2O3, Ni(NO3)2.6H2O, Gd2O3, Tb2O3 and Ho2O3 raw materials. The synthesized nanomaterials were characterized by powder X-ray diffraction (PXRD) technique. The rietveld analyses showed that the obtained materials were crystallized well in monoclinic crystal structure with the space group P121/c1. The morphology of the synthesized materials was studied by field emission scanning electron microscope (FESEM). Photocatalytic performance of the as-synthesized sample was investigated for the degradation of pollutant Malachite Green (MG) in aqueous solution under direct visible light irradiation. The light source was a white color fluorescent lamp with the 40 W power and light intensity of 1.34 W/m2 measured by a digital lux meter. The distance between the lamp and the surface of the solution was 50 cm. The degradation yield at the optimized condition (0.1 mL H2O2, 60 mg catalyst and 90 min) was 94 % for pure Ni3As2O8.","PeriodicalId":16523,"journal":{"name":"Journal of Nanostructures","volume":"10 1","pages":"9-19"},"PeriodicalIF":1.4,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68410687","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}
引用次数: 1
Auto combustion synthesis using grapefruit extract: photocatalyst and magnetic MgFe2O4-PbS nanocomposites 葡萄柚提取物的自燃烧合成:光催化剂和磁性MgFe2O4-PbS纳米复合材料
IF 1.4
Journal of Nanostructures Pub Date : 2020-01-01 DOI: 10.22052/JNS.2020.01.010
K. Hedayati, M. Joulaei, D. Ghanbari
{"title":"Auto combustion synthesis using grapefruit extract: photocatalyst and magnetic MgFe2O4-PbS nanocomposites","authors":"K. Hedayati, M. Joulaei, D. Ghanbari","doi":"10.22052/JNS.2020.01.010","DOIUrl":"https://doi.org/10.22052/JNS.2020.01.010","url":null,"abstract":"Magnesium ferrite (MgFe2O4) as a core magnetic nanostructure was synthesized via auto combustion method by using grapefruit extract as a biocompatible and cost-effective material. Then flower and star-like PbS were synthesized using thioglycolic acid as a sulfur source without using any chemical template. After that for preparation of magnetic and photocatalyst MgFe2O4-PbS nanocomposites, lead sulfide were coated on the magnetic core by hydrothermal procedure. Morphology of the prepared products was estimated by transmission electron microscopy (TEM), scanning electron microscopy (SEM), also X-ray diffraction (XRD) pattern show purity and phase of the product. Fourier transforms infrared (FT-IR) spectroscopy show vibration modes of the bonds. Vibrating sample magnetometer (VSM) illustrated that magnesium ferrite nanoparticles have a soft magnetic behaviour with 18 emu/g magnetization and coercivity about 90Oe. The photocatalytic behaviour of MgFe2O4-PbS nanocomposites were examined using the degradation of two various azo dyes acid brown and acid violet under visible light irradiation. This magnetic photocatalyst can easily separate from water with an external magnetic field and can be used under solar irradiation.","PeriodicalId":16523,"journal":{"name":"Journal of Nanostructures","volume":"10 1","pages":"83-91"},"PeriodicalIF":1.4,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68410993","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}
引用次数: 4
Effect of hydrothermal reaction temperature on the photocatalytic properties of CdWO4-RGO nanocomposites 水热反应温度对CdWO4-RGO纳米复合材料光催化性能的影响
IF 1.4
Journal of Nanostructures Pub Date : 2019-10-01 DOI: 10.22052/JNS.2019.04.001
M. T. T. Moghadam, M. Babamoradi, R. Azimirad
{"title":"Effect of hydrothermal reaction temperature on the photocatalytic properties of CdWO4-RGO nanocomposites","authors":"M. T. T. Moghadam, M. Babamoradi, R. Azimirad","doi":"10.22052/JNS.2019.04.001","DOIUrl":"https://doi.org/10.22052/JNS.2019.04.001","url":null,"abstract":"Cadmium tungstate (CdWO4) nanorods and CdWO4-reduced graphene oxide (RGO) nanocomposites have been prepared by the hydrothermal method at 140, 160 and 180 oC reaction temperatures. The synthesized samples were characterized by X-ray powder diffraction, scanning electron microscopy (SEM), Fourier transform infrared, photoluminescence spectroscopy and Raman spectroscopy. SEM image showed the pure sample consist of nanorods with 50-100 nm diameter and ~1 µm length. The images of the nanocomposite samples clearly showed existence of CdWO4 nanorods and graphene sheets together. The photocatalytic activities of the as-prepared samples were investigated by degradation of methylene blue under the visible light irradiation. An enhancement in photocatalytic activity was observed with CdWO4-RGO nanocomposites in compare with the pure CdWO4. The effect of reaction temperature on the photocatalytic activity of the prepared nanocomposites was also investigated. The results showed that the CdWO4-RGO sample which prepared at 160 oC has more catalytic activity than the other samples.","PeriodicalId":16523,"journal":{"name":"Journal of Nanostructures","volume":"9 1","pages":"600-609"},"PeriodicalIF":1.4,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49030291","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}
引用次数: 6
Preparation and Characterization of Curcumin Niosomal Nanoparticles via a Simple and Eco-friendly Route 简单环保法制备姜黄素纳米粒子及其表征
IF 1.4
Journal of Nanostructures Pub Date : 2019-10-01 DOI: 10.22052/JNS.2019.04.020
Zahra Zinatloo-Ajabshir, S. Zinatloo-Ajabshir
{"title":"Preparation and Characterization of Curcumin Niosomal Nanoparticles via a Simple and Eco-friendly Route","authors":"Zahra Zinatloo-Ajabshir, S. Zinatloo-Ajabshir","doi":"10.22052/JNS.2019.04.020","DOIUrl":"https://doi.org/10.22052/JNS.2019.04.020","url":null,"abstract":"In this investigation, curcumin niosomal nanoparticles were prepared via a simple, efficient and eco-friendly route, thin film hydration (TFH), in the presence of different mixture of the surfactants (tween 60 and span 60). Cholesterol ratio to surfactant, as effective factor, was altered to obtain the optimal nanoparticles. The size, zeta potential, size distribution, entrapment efficiency of the prepared nanoparticles were examined and compared. The optimum nanoparticles were chosen to examine the release from the dialysis membrane. Ratio of cholesterol to surfactant was found to have key and notable influence on the size, zeta potential, size distribution, entrapment efficiency of the prepared nanoparticles. The nanoparticles prepared with Formulations 3 and 5 as optimum nanoparticles were chosen to examine the release from the dialysis membrane. The results denoted that by increasing the ratio of cholesterol to surfactant, the rate of curcumin release was enhanced from the membrane. High quantities of cholesterol in the formulation 3, in addition to explosive release, can lead to slow release.","PeriodicalId":16523,"journal":{"name":"Journal of Nanostructures","volume":"9 1","pages":"784-790"},"PeriodicalIF":1.4,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45857099","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}
引用次数: 31
Antibacterial activity of CuO - cellulose nano rods depends on anew green synthesis (cotton) CuO -纤维素纳米棒的抗菌活性依赖于新型绿色合成(棉花)
IF 1.4
Journal of Nanostructures Pub Date : 2019-10-01 DOI: 10.22052/JNS.2019.04.017
R. Hussain, W. Aziz, I. A. Ibrahim
{"title":"Antibacterial activity of CuO - cellulose nano rods depends on anew green synthesis (cotton)","authors":"R. Hussain, W. Aziz, I. A. Ibrahim","doi":"10.22052/JNS.2019.04.017","DOIUrl":"https://doi.org/10.22052/JNS.2019.04.017","url":null,"abstract":"In this study CuO nano sheets were prepared using the cellulose extracted from green synthesis (cotton) as a novel me project. Structural properties were examined using X-Ray Diffraction (XRD), Field Emission Scanning Electron Microscopy (FESEM), and Ultra Violet (UV-Vis). The optimum copper oxide peak was at 2 theta 〖35.44〗^°corresponding to (1 11) while for the cellulose was 〖22.8〗^°corresponds to (002). FESEM images of CuO nano sheets were relatively homogenous with diameters less than 30 nm. The UV-Vis for CuO-cellulose nano rods was observed at 350-360 nm, which is higher than of pure CuO nano sheet. The energy band gaps were 3.20 eV and 3.30 eV of CuO and CuO-CNR respectively. Finally antimicrobial activities of samples have been investigated against the Gram positive (pneumonia) and gram-negative (pseudomonas). The maximum antibacterial activities against the Gram positive (pneumonia) of CuO nano sheet and of CuO- cellulose nano rods are 16 mm and 19 mm respectively. The maximum antibacterial activities against the Gram negative (pseudomonas) of CuO nano sheet and of CuO- cellulose nano rods are 30 mm and 33 mm.","PeriodicalId":16523,"journal":{"name":"Journal of Nanostructures","volume":"9 1","pages":"761-767"},"PeriodicalIF":1.4,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43086497","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}
引用次数: 1
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