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Journal articles on the topic 'Tungsten trioxide'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Memou, Cherifa Hakima, Mohamed Amine Bekhti, Mohamed Kiari, et al. "Fabrication and Characterization of a Poly(3,4-ethylenedioxythiophene)@Tungsten Trioxide–Graphene Oxide Hybrid Electrode Nanocomposite for Supercapacitor Applications." Nanomaterials 13, no. 19 (2023): 2664. http://dx.doi.org/10.3390/nano13192664.

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With the rapid development of nanotechnology, the study of nanocomposites as electrode materials has significantly enhanced the scope of research towards energy storage applications. Exploring electrode materials with superior electrochemical properties is still a challenge for high-performance supercapacitors. In the present research article, we prepared a novel nanocomposite of tungsten trioxide nanoparticles grown over supported graphene oxide sheets and embedded with a poly(3,4-ethylenedioxythiophene) matrix to maximize its electrical double layer capacitance. The extensive characterizatio

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2

Woodward, P. M., A. W. Sleight, and T. Vogt. "Ferroelectric Tungsten Trioxide." Journal of Solid State Chemistry 131, no. 1 (1997): 9–17. http://dx.doi.org/10.1006/jssc.1997.7268.

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3

Porkodi, P., V. Yegnaraman, and D. Jeyakumar. "Polyol mediated synthesis of tungsten trioxide and Ti doped tungsten trioxide." Materials Research Bulletin 41, no. 8 (2006): 1476–86. http://dx.doi.org/10.1016/j.materresbull.2006.01.030.

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4

He, Xinyi, Yi Xiong, Meng Zhao, and Wei Zeng. "Study on Structural Stability of Black Phosphorus/Bismuth Oxysulfide/Tungsten Trioxide Heterojunction Based on XRD Measurement." Journal of Physics: Conference Series 2395, no. 1 (2022): 012003. http://dx.doi.org/10.1088/1742-6596/2395/1/012003.

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Abstract X-ray diffraction is employed to characterize the black phosphorus/bismuth oxysulfide/tungsten trioxide heterojunction composites to explore the alterations in crystallite size and micro-strain. The sample is immersed in sodium sulfite and tested each week. The Scherrer formula and Williamson-Hall plots are used to explore the effect of black phosphorus on improving the stability of the bismuth oxysulfide/tungsten trioxide heterojunction. The results show that the structure of black phosphorus/bismuth oxysulfide/tungsten trioxide heterojunction has changed as follows. The value of cry

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5

Lisitsyna, L. A., G. K. Alpyssova, and D. A. Mussakhanov. "Optical characteristics of tungsten trioxide luminescence in different matrices." Bulletin of the Karaganda University "Physics Series" 11629, no. 4 (2024): 143–55. https://doi.org/10.31489/2024ph4/143-155.

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The comparative research using time-resolved spectroscopy of the optical characteristics of an emission in two types phosphors: natural phosphors: ZnWO4, CdWO4, microcrystalline WO3, and artificial once: wide band gap dielectrics LiF, MgF2и BaF2 doped with tungsten trioxide were presented. Both single crystals and сeramic samples obtained in the process of high-speed radiation synthesis in air under a flux of 1.5 MeV elec- trons were studied. It has been established that the spectral-kinetic characteristics of the studied materials lu- minescence are the similarity in dielectrics, where WO3 is

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6

Han, Chulwoong, Hyunwoong Na, Hanshin Choi, and Yonghwan Kim. "High Purity Tungsten Spherical Particle Preparation From WC-Co Spent Hard Scrap." Archives of Metallurgy and Materials 60, no. 2 (2015): 1507–9. http://dx.doi.org/10.1515/amm-2015-0162.

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Abstract Tungsten carbide-cobalt hard metal scrap was recycled to obtain high purity spherical tungsten powder by a combined hydrometallurgy and physical metallurgy pathway. Selective leaching of tungsten element from hard metal scrap occurs at solid / liquid interface and therefore enlargement of effective surface area is advantageous. Linear oxidation behavior of Tungsten carbide-cobalt and the oxidized scrap is friable to be pulverized by milling process. In this regard, isothermally oxidized Tungsten carbide-cobalt hard metal scrap was mechanically broken into particles and then tungsten t

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7

Sun, Shi Bin, Zeng Da Zou, and Guang Hui Min. "WO₃ Nanostructures Synthesized by a Sonochemical Strategy." Advanced Materials Research 60-61 (January 2009): 16–21. http://dx.doi.org/10.4028/www.scientific.net/amr.60-61.16.

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A simple sonochemical synthesis of tungsten trioxide hydrate with various morphologies has been developed by using tungsten hexachloride (WCl6) as precursor and water, ethanol and their mixture as solvent, followed by annealing in a tube furnace. The resulting products were structurally characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transition electron microscopy (TEM) and differential thermal analysis (DTA). Results show that nanowhiskers emanating from the core of nanoparticles have been obtained with ethanol as solvent, and that nanoplates and nanosheets were

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8

Daniel, M. F., B. Desbat, J. C. Lassegues, B. Gerand, and M. Figlarz. "Infrared and Raman study of WO3 tungsten trioxides and WO3, xH2O tungsten trioxide tydrates." Journal of Solid State Chemistry 67, no. 2 (1987): 235–47. http://dx.doi.org/10.1016/0022-4596(87)90359-8.

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9

Zhao, Yaoxing, Cuncai Lv, Qingli Huang, Zhipeng Huang, and Chi Zhang. "Self-supported tungsten/tungsten dioxide nanowires array as an efficient electrocatalyst in the hydrogen evolution reaction." RSC Advances 6, no. 92 (2016): 89815–20. http://dx.doi.org/10.1039/c6ra17194j.

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A tungsten/tungsten dioxide nanowires array was constructed on a carbon paper through the thermal annealing of tungsten trioxide, and was proven to be an efficient hydrogen evolution cathode with strong durability in acidic solutions.

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10

Medvezhynska, Olha, and Anatoliy Omel'chuk. "(Digital Presentation) Electrochemical Reduction of Oxygen-Containing Tungsten Compounds on a Liquid Gallium Cathode in an Eutectic Melt of Calcium and Sodium Chlorides." ECS Meeting Abstracts MA2022-02, no. 54 (2022): 2044. http://dx.doi.org/10.1149/ma2022-02542044mtgabs.

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This paper presents the results of studies of electrochemical reduction of oxygen-containing tungsten compounds (WO3, CaWO4) in a molten eutectic mixture of calcium and sodium chlorides. In contrast to the known methods of direct electrochemical reduction of refractory metal oxides, it is proposed to reduce the initial oxygen-containing tungsten compounds in powder form on a liquid gallium cathode without resorting to pre-pressing and sintering operations. In the temperature range 600-1000 °C, at which the electrochemical reduction of these compounds takes place, gallium does not evaporate, do

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11

Marushkin, K. N., A. S. Alikhanyan, J. H. Greenberg, et al. "Sublimation thermodynamics of tungsten trioxide." Journal of Chemical Thermodynamics 17, no. 3 (1985): 245–53. http://dx.doi.org/10.1016/0021-9614(85)90018-7.

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12

Medvezhynska, Olha, Anatoliy Omel'chuk, Irine Shvaika, Igor Shvayka, and Lubov Proskurka. "THE INTERACTION OF TUNGSTEN (VI) OXIDE AND CALCIUM TUNGSTATE IN THE CaCl2–NaCl EUTECTIC MELT." Ukrainian Chemistry Journal 89, no. 3 (2023): 25–36. http://dx.doi.org/10.33609/2708-129x.89.03.2023.25-36.

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The interaction of tungsten (VI) oxide and calcium tungstate with a molten eutectic mixture of calcium-sodium chlorides in the temperature range from 600 to 800 °С was investigated by the methods of isothermal saturation, mass spectrometry with inductively coupled plasma (ICP–MS) and X-ray phase analysis. It was noted that the solubility of both tungsten trioxide and calcium tungstate depends to a large extent on temperature. Thus, in the temperature range from 600 to 700 °C, the equilibrium concentration of tungsten increases by an average of 1.7 times, and in the range from 700 to 800 °C, it

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13

Chen, Qiu Lan, Xi Lai, Meng Long Yan, et al. "Preparation of Tungsten Oxide Nanoplate Thin Film and its Gas Sensing Properties." Advanced Materials Research 774-776 (September 2013): 687–90. http://dx.doi.org/10.4028/www.scientific.net/amr.774-776.687.

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Tungsten oxide is a kind of multifunctional materials with excellent properties for gas sensing, electrochromic and photocatalytic applications. In this study, Tungsten oxide nanoplate thin film was prepared by hydrothermal methods. The as-prepared thin film is composed of tungsten trioxide hydrate nanoplates, which are randomly orientate on the surface. The as-grown nanoplate thin film shows good sensitivity to H2 gas. Dehydration and phase transition to γ-phase tungsten trioxide were found after annealing, and the sensitivity as well as the response time to H2 were improved. We found that th

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14

Chen, Deliang, Haitao Zhai, Huimin Chen, et al. "Porous Tungsten Carbide Nanoplates Derived from Tungsten Trioxide Nanoplates." Journal of the American Ceramic Society 95, no. 11 (2012): 3370–73. http://dx.doi.org/10.1111/j.1551-2916.2012.05449.x.

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15

Bernardini, Sandrine, Florent Pourcin, Nassirou Nambiema, et al. "Ammonia Detection at Low Temperature by Tungsten Oxide Nanowires." Proceedings 2, no. 13 (2018): 983. http://dx.doi.org/10.3390/proceedings2130983.

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Ammonia detection at low temperatures below 150 °C is attractive to be well suited for flexible substrates in terms of thermal strain and to specific environment not allowing high temperature such as explosive one. In commercial gas sensors, tungsten trioxide is the mostly used semiconducting metal oxide after tin dioxide. We report herein the efficiency of tungsten trioxide nanowires deposited on rigid substrate by drop coating from colloidal solution. This study provides an interesting approach to fabricate ammonia sensors on conformable substrate with significant properties for applications

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16

He, Xu, Xiangyue Wang, Bangning Sun, et al. "Synthesis of three-dimensional hierarchical furball-like tungsten trioxide microspheres for high performance supercapacitor electrodes." RSC Advances 10, no. 23 (2020): 13437–41. http://dx.doi.org/10.1039/c9ra10995a.

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17

Stanciu, Victor Ioan, Véronique Vitry, and Fabienne Delaunois. "Direct Carburization of Tungsten Trioxide by Mechanical Alloying." Advanced Materials Research 1128 (October 2015): 51–57. http://dx.doi.org/10.4028/www.scientific.net/amr.1128.51.

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Tungsten carbide is the choice of predilection for producing parts requiring good wear resistance. In this context it is produced in large quantities by the carburization of tungsten trioxide under a stream of hydrogen at elevated temperature followed by grinding to achieve the required fineness. This work aims to study the conditions in which tungsten carbide can be produced by mechanical alloying method. Using this method would facilitate obtaining carbide through a simple and easy to use technology without prohibitive costs, directly by an end user. For this purpose the thermodynamic study

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18

Bae, Jaehyun, Haekyoung Kim, Hong Chul Moon, and Se Hyun Kim. "Low-voltage, simple WO3-based electrochromic devices by directly incorporating an anodic species into the electrolyte." Journal of Materials Chemistry C 4, no. 46 (2016): 10887–92. http://dx.doi.org/10.1039/c6tc03463b.

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19

Kumari, J., and P. Mangala. "Enhanced Anticarcinogenic and Antimicrobial Response of Synthesized Tungsten Oxide Nanoparticles." Journal of Scientific Research 15, no. 1 (2023): 141–57. http://dx.doi.org/10.3329/jsr.v15i1.58211.

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In the present study, we fabricated tungsten trioxide nanoparticles (WO3 NPs) from a tungsten complex [W(C13H10NO)3] of ligand N-salicylideneaniline with tungstic acid as the precursor. Nanoparticles were synthesized using the direct thermal decomposition method. These nanoparticles were evaluated for cytotoxicity influence on human breast cancer MCF7 cell line (adenocarcinoma). The observed results suggested that WO3 can destroy 50 % of viable cells after 24 h of incubation at 37 °C. Based on these results, we concluded that WO3 nanoparticles could be a potential drug carrier candidate agains

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20

Guéry, C., C. Choquet, F. Dujeancourt, J. M. Tarascon, and J. C. Lassègues. "Infrared and X-ray studies of hydrogen intercalation in different tungsten trioxides and tungsten trioxide hydrates." Journal of Solid State Electrochemistry 1, no. 3 (1997): 199–207. http://dx.doi.org/10.1007/s100080050049.

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21

Patel, Aman, Weigang Lu, Blake Birmingham, et al. "Enhanced photoluminescence of potassium-doped tungsten oxide by acetone exposure." RSC Advances 13, no. 2 (2023): 1236–44. http://dx.doi.org/10.1039/d2ra06267d.

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22

Fujioka, Yukari, Johannes Frantti, and Vilho Lantto. "Structural Study of Nanocrystalline Tungsten Trioxide." Integrated Ferroelectrics 123, no. 1 (2011): 81–86. http://dx.doi.org/10.1080/10584587.2011.570641.

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23

Xu, Z., J. F. Vetelino, R. Lec, and D. C. Parker. "Electrical properties of tungsten trioxide films." Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films 8, no. 4 (1990): 3634–38. http://dx.doi.org/10.1116/1.576517.

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24

Chenthamarakshan, C. R., N. R. de Tacconi, Lucy Xu, and Krishnan Rajeshwar. "Photoelectrochromism in Tungsten Trioxide Colloidal Solutions." Journal of Chemical Education 81, no. 12 (2004): 1790. http://dx.doi.org/10.1021/ed081p1790.

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25

Wu, Yue, Zhonghe Xi, Gengmin Zhang, Jie Yu, and Dengzhu Guo. "Growth of hexagonal tungsten trioxide tubes." Journal of Crystal Growth 292, no. 1 (2006): 143–48. http://dx.doi.org/10.1016/j.jcrysgro.2006.03.053.

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26

Cetinkaya, S., and S. Eroglu. "Reduction of tungsten trioxide with ethanol." International Journal of Refractory Metals and Hard Materials 64 (April 2017): 184–89. http://dx.doi.org/10.1016/j.ijrmhm.2016.12.002.

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27

Woodward, P. M., A. W. Sleight, and T. Vogt. "Structure refinement of triclinic tungsten trioxide." Journal of Physics and Chemistry of Solids 56, no. 10 (1995): 1305–15. http://dx.doi.org/10.1016/0022-3697(95)00063-1.

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28

Velasco, Jon, Ainara Ateka, Idoia Ruiz de Larramendi, and Francisco Javier del Campo. "Electrochromic screen-printed tungsten trioxide electrodes." Electrochimica Acta 493 (July 2024): 144414. http://dx.doi.org/10.1016/j.electacta.2024.144414.

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29

Darmawi, S., S. Burkhardt, T. Leichtweiss, et al. "Correlation of electrochromic properties and oxidation states in nanocrystalline tungsten trioxide." Physical Chemistry Chemical Physics 17, no. 24 (2015): 15903–11. http://dx.doi.org/10.1039/c5cp02482j.

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30

Alharbi, Khadijah H., Walaa Alharbi, M. A. El-Morsy, M. O. Farea, and A. A. Menazea. "Optical, Thermal, and Electrical Characterization of Polyvinyl Pyrrolidone/Carboxymethyl Cellulose Blend Scattered by Tungsten-Trioxide Nanoparticles." Polymers 15, no. 5 (2023): 1223. http://dx.doi.org/10.3390/polym15051223.

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The polymeric material polyvinyl pyrrolidine/carboxymethyl cellulose (PVP/CMC) was mixed with different quantities of tungsten-trioxide nanoparticles (WO3 NPs). The samples were created using the casting method and Pulsed Laser Ablation (PLA). The manufactured samples were analyzed by utilizing various methods. The halo peak of the PVP/CMC was located at 19.65°, confirming its semi-crystalline nature, as shown in the XRD analysis. FT-IR spectra of pure PVP/CMC composite and PVP/CMC composite incorporated with various contents of WO3 obtained a shift in band locations and change in intensity. O

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31

Hui, Bin, Dianxiu Wu, Qiongtao Huang, et al. "Photoresponsive and wetting performances of sheet-like nanostructures of tungsten trioxide thin films grown on wood surfaces." RSC Advances 5, no. 90 (2015): 73566–74. http://dx.doi.org/10.1039/c5ra10479c.

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32

Baimbetov, Bolotpay, Yeleussiz Tazhiyev, Akmaral Yeleuliyeva, et al. "Sintering with Sodium Carbonate and Leaching of Wolframite Cakes." Applied Sciences 14, no. 24 (2024): 12031. https://doi.org/10.3390/app142412031.

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Focuses on the processing of tungsten raw materials through various operations, including sintering, leaching, purification, and the production of technical tungstic acid. Modern research aims to enhance these processes, particularly the sintering of wolframite concentrates with alkali metal compounds and the leaching of concentrates and cakes. Experiments revealed that reactions between tungsten minerals and sodium carbonate from Akchatau ores commence at temperatures above 520–550 °C, intensifying between 750 and 850 °C. The concentrates were sintered at 750, 800, and 850 °C with a sodium ca

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33

FIGLARZ, M. "ChemInform Abstract: New Oxides in the Tungsten Trioxide-Molybdenum Trioxide System." ChemInform 22, no. 19 (2010): no. http://dx.doi.org/10.1002/chin.199119284.

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34

Li, Xinran, Hao Jiang, Zhiwei Peng, Anan Duan, Tong Zhang, and Zexi Gong. "Leaching of Scheelite Concentrate for Tungsten Extraction." Minerals 15, no. 5 (2025): 475. https://doi.org/10.3390/min15050475.

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As a critical raw material, tungsten plays a broad role in machining, electronics, aerospace, and other high-tech industries. The extraction of tungsten from tungsten concentrates is a prerequisite for the production of high-purity products. Approximately 70% of China’s tungsten resources are in the form of scheelite. The extraction method of low-quality scheelite is crucial for the production application of the tungsten process as resources of high-quality wolframite are gradually being depleted. This article systematically reviews the processes and challenges faced in the hydrometallurgical

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35

Medvezhynska, Olha, and Anatoliy Omel'chuk. "(Digital Presentation) Electrochemical Reduction of Pressed Tungsten (VI) Oxide on a Solid Electrode in a Melt of Calcium and Sodium Chlorides." ECS Meeting Abstracts MA2023-01, no. 21 (2023): 1546. http://dx.doi.org/10.1149/ma2023-01211546mtgabs.

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This report presents the results of research on the electrochemical reduction of tungsten (VI) oxide in a molten electrolytic mixture of CaCl2-NaCl of eutectic composition. The electrochemical behavior of tableted WO3 on a solid tungsten electrode was studied by voltammetry. Analysis of the obtained products was carried out by X-Ray diffraction and electron microscopy. During the electrochemical reduction, pressed cylindrical samples were placed on a tungsten disk, which served as a cathode. A silica cloth impregnated with a CaCl2-NaCl eutectic melt was placed on top of the tableted sample in

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36

Al-Ghamdi, Ahmed A., H. Bostancı, Omar A. Al-Hartomy, M. Soylu, Farid El-Tantawy, and F. Yakuphanoglu. "Preparation of Tungsten Trioxide Nanorods by Hydrothermal Route: n-Tungsten Trioxide Nanorods/p-Silicon p–n Junction." Journal of Nanoelectronics and Optoelectronics 9, no. 3 (2014): 327–33. http://dx.doi.org/10.1166/jno.2014.1600.

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37

Elbohy, Hytham, Khan Mamun Reza, Salem Abdulkarim, and Qiquan Qiao. "Creation of oxygen vacancies to activate WO3 for higher efficiency dye-sensitized solar cells." Sustainable Energy & Fuels 2, no. 2 (2018): 403–12. http://dx.doi.org/10.1039/c7se00483d.

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38

Kim, Yong Min, Xinlin Li, Keon-Woo Kim, Se Hyun Kim, and Hong Chul Moon. "Tetrathiafulvalene: effective organic anodic materials for WO3-based electrochromic devices." RSC Advances 9, no. 34 (2019): 19450–56. http://dx.doi.org/10.1039/c9ra02840d.

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39

Perkins, Cory K., Travis M. Reed, and Allen W. Apblett. "Sorption of lead from aqueous solutions by a commercially available tungsten trioxide nanopowder." RSC Advances 5, no. 84 (2015): 68991–97. http://dx.doi.org/10.1039/c5ra11299k.

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40

Adhikari, Sangeeta, and Debasish Sarkar. "Hydrothermal synthesis and electrochromism of WO3 nanocuboids." RSC Adv. 4, no. 39 (2014): 20145–53. http://dx.doi.org/10.1039/c4ra00023d.

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Tungsten trioxide (WO<sub>3</sub>) nanocuboids are preferentially developed through control over three important processing parameters: fluoroboric acid concentration, hydrothermal reaction time and temperature.

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41

Lee, Hoik, Myungwoong Kim, Daewon Sohn, et al. "Electrospun tungsten trioxide nanofibers decorated with palladium oxide nanoparticles exhibiting enhanced photocatalytic activity." RSC Advances 7, no. 10 (2017): 6108–13. http://dx.doi.org/10.1039/c6ra24935c.

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42

Shaposhnik, Alexey V., Alexey A. Zviagin, Stanislav V. Ryabtsev, Olga V. Dyakonova, and Elena A. Vysotskaya. "Synthesis and sensory properties of tungsten (VI) oxide-based nanomaterials." Kondensirovannye sredy i mezhfaznye granitsy = Condensed Matter and Interphases 26, no. 2 (2024): 349–55. http://dx.doi.org/10.17308/kcmf.2024.26/11946.

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The purpose of this work was to develop a methodology for the synthesis of WO3-based nano-scale materials, to provide their characterization, and to study their sensory properties. The nanopowder was made by slowly adding nitric acid to an aqueous solution of ammonium paratungstate,(NH4)10W21O41·xH2O, followed by centrifugation, drying, and calcination. The size of tungsten trioxide grains, which was 10-20 nm, was determined by transmission electron microscopy. According to X-ray phase analysis, the powder, which was calcined at a temperature of 500 °C, mainly consisted of a triclinic phase. S

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Liu, Qian, Zijie Xu, Wu Qiu, et al. "Ultraflexible, stretchable and fast-switching electrochromic devices with enhanced cycling stability." RSC Advances 8, no. 33 (2018): 18690–97. http://dx.doi.org/10.1039/c8ra02829j.

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We present a flexible sandwiched tungsten trioxide/silver nanotrough network/poly(3,4-ethylenedioxythiophene)–poly(styrene sulfonate) multi-layer transparent conducting electrode with prominent conductivity and transparency.

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44

Shin, Sun, Hyun Soo Han, Ju Seong Kim, et al. "A tree-like nanoporous WO3 photoanode with enhanced charge transport efficiency for photoelectrochemical water oxidation." Journal of Materials Chemistry A 3, no. 24 (2015): 12920–26. http://dx.doi.org/10.1039/c5ta00823a.

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45

Santos-Betancourt, Alejandro, Èric Navarrete, Damien Cossement, Carla Bittencourt, and Eduard Llobet. "AACVD synthesized tungsten oxide-NWs loaded with osmium oxide as a gas sensor array: enhancing detection with PCA and ANNs." RSC Advances 14, no. 47 (2024): 34985–95. http://dx.doi.org/10.1039/d4ra05346j.

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46

Matsukawa, Takeshi, and Toru Ishigaki. "Effect of isothermal holding time on hydrogen-induced structural transitions of WO3." Dalton Transactions 50, no. 22 (2021): 7590–96. http://dx.doi.org/10.1039/d1dt01259b.

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47

Utamarat, Nisida, Lek Sikong, and Kanadit Chetpattananondh. "Electrochromic Properties of Lithium Vanadate Doped Tungsten Trioxide Film." Applied Mechanics and Materials 873 (November 2017): 9–13. http://dx.doi.org/10.4028/www.scientific.net/amm.873.9.

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Lithium vanadate doped tungsten trioxide films were coated on conducting fluorine doped tin oxide substrate by the sol-gel and dip coating methods using lithium vanadate and peroxotungstic acid sol. The concentration of lithium vanadatewas varied and the effects of lithium vanadate on morphology, microstructure and electrochromic properties of WO3 film were investigated. The synthesized tungsten trioxide with 10 wt.% lithium vanadate can be identified as amorphous structure. It observed that the crystallinity of the films are increase and more smooth when Li concentration increased and exhibit

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48

Kabtamu, Daniel Manaye, Yu-Chung Chang, Guan-Yi Lin, et al. "Three-dimensional annealed WO3 nanowire/graphene foam as an electrocatalytic material for all vanadium redox flow batteries." Sustainable Energy & Fuels 1, no. 10 (2017): 2091–100. http://dx.doi.org/10.1039/c7se00271h.

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49

Kosov, Alexander V., Olga L. Semerikova, Sergey V. Vakarin, et al. "Ionic Equilibria in Polytungstate Melts." Processes 10, no. 12 (2022): 2658. http://dx.doi.org/10.3390/pr10122658.

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Polytungstate melts are used for the electrodeposition of oxide tungsten bronzes (OTBs). The scarce information on the ionic composition and properties of these electrolytes hinders effective control of the electrochemical synthesis of OTBs with desired electrical and optical properties. In this work, a comprehensive study of Na2WO4–WO3 melts that contained up to 55 mol% of tungsten trioxide was performed in the temperature range from 983 to 1073 K. Melt densities were measured using the Archimedes method. DFT calculations were carried out for various tungsten-containing compounds, including W

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Nogueira, Helena I. S., Ana M. V. Cavaleiro, João Rocha, Tito Trindade, and Júlio D. Pedrosa de Jesus. "Synthesis and characterization of tungsten trioxide powders prepared from tungstic acids." Materials Research Bulletin 39, no. 4-5 (2004): 683–93. http://dx.doi.org/10.1016/j.materresbull.2003.11.004.

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