نتایج جستجو برای: wo3 nanoparticles

تعداد نتایج: 108534  

ابارشی, افسانه, هراتی زاده, حمید,

Tungsten trioxide (WO3) thin films were coated onto fluorine tin oxide coated glass substrates, using electrodeposition technique via aqueous solution of peroxotungstic acid. WO3 films were evaluated as a function of annealing temperature (60°C, 100°C, 250°C and 400°C). The films were analyzed by field emission Scanning Electron Microscopy (SEM), UV-visible spectrometer and cyclic voltammogram....

2015
A. C. Marques L. Santos M. N. Costa J. M. Dantas P. Duarte A. Gonçalves R. Martins C. A. Salgueiro E. Fortunato

Electrochemically active bacteria (EAB) have the capability to transfer electrons to cell exterior, a feature that is currently explored for important applications in bioremediation and biotechnology fields. However, the number of isolated and characterized EAB species is still very limited regarding their abundance in nature. Colorimetric detection has emerged recently as an attractive mean fo...

2015
Rui-Tao Wen Claes G. Granqvist Gunnar A. Niklasson

There is keen interest in the use of amorphous WO3 thin films as cathodic electrodes in transmittance-modulating electrochromic devices. However, these films suffer from ion-trapping-induced degradation of optical modulation and reversibility on extended Li(+)-ion exchange. Here, we demonstrate that ion-trapping-induced degradation, which is commonly believed to be irreversible, can be successf...

2013
S. Fardindoost A. Iraji Zad S. M. Mahdavi

Tungsten trioxide has been prepared by using P-PTA as a precursor on alumina substrates by spin coating method. Palladium introduced on WO3 film via electrolysis deposition by using palladium chloride as catalytic precursor. The catalytic precursor was introduced on the series of films with different morphologies. X-ray diffractometry (XRD), Scanning electron microscopy (SEM) and XPS were appli...

2017
Nikolaos D. Charisiou Georgios Siakavelas Kyriakos N. Papageridis Apostolos Baklavaridis Lazaros Tzounis Grammatiki Goula Ioannis V. Yentekakis Kyriaki Polychronopoulou Maria A. Goula

Citation: Charisiou ND, Siakavelas G, Papageridis KN, Baklavaridis A, Tzounis L, Goula G, Yentekakis IV, Polychronopoulou K and Goula MA (2017) The Effect of WO3 Modification of ZrO2 Support on the Ni-Catalyzed Dry Reforming of Biogas Reaction for Syngas Production. Front. Environ. Sci. 5:66. doi: 10.3389/fenvs.2017.00066 The Effect of WO3 Modification of ZrO2 Support on the Ni-Catalyzed Dry Re...

2008
X. Yun L. Wang K. Kalyanasundaram M. Stanaćević P. Gouma

A portable binary breath analyzer prototype for detection of specific metabolites in breath like nitric oxide, ammonia and isoprene is designed. A binary response implemented with LED display is employed for the prototype. Highly selective NO sensors were fabricated by using modified pervskite based WO3. Experiments demonstrated that the designed prototype embedded with WO3 sensor is able to de...

2007
Janarthanan Rajeswari PilliSatyananda Kishore Balasubramanian Viswanathan ThirukkallamKanthadai Varadarajan

Tungsten trioxide nanorods have been generated by the thermal decomposition (450 C) of tetrabutylammonium decatungstate. The synthesized tungsten trioxide (WO3) nanorods have been characterized by XRD, Raman, SEM, TEM, HRTEM and cyclic voltammetry. High resolution transmission electron microscopy and X-ray diffraction analysis showed that the synthesized WO3 nanorods are crystalline in nature w...

2013
Lin Liang Jiajia Zhang Yingying Zhou Junfeng Xie Xiaodong Zhang Meili Guan Bicai Pan Yi Xie

Ultrathin nanosheets are considered as one kind of the most promising candidates for the fabrication of flexible electrochromic devices (ECDs) due to their permeable channels, high specific surface areas, and good contact with the substrate. Herein, we first report the synthesis of large-area nanosheets of tungsten oxide dihydrate (WO3·2H2O) with a thickness of only about 1.4 nm, showing much h...

2011
Kai Huang Qing Zhang

A giant persistent photoconductivity (PPC) phenomenon has been observed in vacuum condition based on a single WO3 nanowire and presents some interesting results in the experiments. With the decay time lasting for 1 × 10(4) s, no obvious current change can be found in vacuum, and a decreasing current can be only observed in air condition. When the WO3 nanowires were coated with 200 nm SiO2 layer...

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