نتایج جستجو برای: V2O5

تعداد نتایج: 1044  

Journal: :The journal of physical chemistry. B 2005
Kyoungho Lee Guozhong Cao

Although it is well-known that TiO2 incorporation can greatly improve the cyclic stability of V2O5, the influences of TiO2 addition on the Li+ intercalation properties of V2O5 remain an issue of debate in literature. In this paper, we report on a systematic investigation of the preparation and intercalation properties of V2O5-TiO2 mixture films. The present work demonstrates that high Li+ inter...

2013
Gerardo Terán-Escobar Jonas Pampel José M. Caicedo Mónica Lira-Cantú

Layered V2O5 hydrate has been applied as the hole transport layer (HTL) in organic solar cells (OSCs). V2O5 is obtained from a sodiummetavanadate solution in water under ambient conditions, resulting in a final thin film of formula V2O5$0.5H2O. The 0.5 water molecules are not removed from the V2O5 layered structure unless the sample is heated above 250 C, which makes the thin film highly stable...

2016
María del Carmen García-Rodríguez Lourdes Montserrat Hernández-Cortés Mario Agustín Altamirano-Lozano

This study was conducted to investigate the effects of vanadium pentoxide (V2O5), ascorbic acid (AA), and alpha-tocopherol (α-TOH) on apoptotic, cytotoxic, and genotoxic activity. Groups of five Hsd:ICR mice were treated with the following: (a) vehicle, distilled water; (b) vehicle, corn oil; (c) AA, 100 mg/kg intraperitoneally (ip); (d) α-TOH, 20 mg/kg by gavage; (e) V2O5, 40 mg/kg by ip injec...

2016
Kowsalya Palanisamy Ji Hyun Um Mihee Jeong Won-Sub Yoon

A three dimensional vanadium pentoxide/reduced graphene oxide/carbon nanotube (3D V2O5/RGO/CNT) composite is synthesized by microwave-assisted hydrothermal method. The combination of 2D RGO and 1D CNT establishes continuous 3D conductive network, and most notably, the 1D CNT is designed to form hierarchically porous structure by penetrating into V2O5 microsphere assembly constituted of numerous...

2012
Nirton CS Vieira Waldir Avansi Alessandra Figueiredo Caue Ribeiro Valmor R Mastelaro Francisco EG Guimarães

The application of one-dimensional (1D) V2O5·nH2O nanostructures as pH sensing material was evaluated. 1D V2O5·nH2O nanostructures were obtained by a hydrothermal method with systematic control of morphology forming different nanostructures: nanoribbons, nanowires and nanorods. Deposited onto Au-covered substrates, 1D V2O5·nH2O nanostructures were employed as gate material in pH sensors based o...

2010
D. M. Yu S. T. Zhang D. W. Liu X. Y. Zhou S. H. Xie Q. F. Zhang Y. Y. Liu G. Z. Cao

added directly during sol preparation. Stable and homogeneous Mn-doped vanadium oxide sol was obtained and the films were fabricated by dip-coating, drying at ambient, and then annealing at 250 C in air for 3 h. X-Ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), and electrochemical analyses have been employed to characterize and analyze the crystalan...

2016
Linfei Zhang Mingyang Yang Shengliang Zhang Zefei Wu Abbas Amini Yi Zhang Dongyong Wang Shuhan Bao Zhouguang Lu Ning Wang Chun Cheng

The superior performance of metal oxide nanocomposites has introduced them as excellent candidates for emerging energy sources, and attracted significant attention in recent years. The drawback of these materials is their inherent structural pulverization which adversely impacts their performance and makes the rational design of stable nanocomposites a great challenge. In this work, functional ...

1998
Joseph P. Dunn Jih-Mirn Jehng Du Soung Kim Laura E. Briand Harvey G. Stenger Israel E. Wachs

The interactions between surface sulfate and surface vanadate species present on sulfated supported vanadia catalysts under dehydrated conditions have been investigated with infrared and Raman spectroscopies. The surface sulfate species present on sulfated TiO2, ZrO2, and Al2O3 supports and V2O5/TiO2, V2O5/ZrO2, and V2O5/Al2O3 catalysts have identical molecular structures, i.e., (M-O)3SdO, wher...

2011
Dawei Liu Yanyi Liu Stephanie L. Candelaria Guozhong Cao Jun Liu Yoon-Ha Jeong

V2O5 xerogel films were fabricated by casting V2O5 sols onto fluorine-doped tin oxide glass substrates at room temperature. Five, ten and twenty atomic layers of Al2O3 were grown onto as-fabricated films respectively. The bare film and Al2O3-deposited films all exhibited hydrous V2O5 phase only. Electrochemical impedance spectroscopy study revealed increased surface charge-transfer resistance o...

2010
Elizabeth A Turpin Aurita Antao-Menezes Mark F Cesta James B Mangum Duncan G Wallace Edilberto Bermudez James C Bonner

BACKGROUND Vanadium pentoxide (V2O5) exposure is a cause of occupational bronchitis and airway fibrosis. Respiratory syncytial virus (RSV) is a ubiquitous pathogen that causes airway inflammation. It is unknown whether individuals with pre-existing respiratory viral infection are susceptible to V2O5-induced bronchitis. We hypothesized that respiratory viral infection will exacerbate vanadium-in...

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