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Journal articles on the topic 'Moo2 Molybdenum Oxide'

Author: Grafiati
Published: 3 June 2025
Last updated: 31 July 2025

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1

Sheybani, K., M. H. Paydar, M. H. Shariat, and N. Setoudeh. "An investigation on aluminothermic reduction of MoO3 in domestic microwave oven." Journal of Mining and Metallurgy, Section B: Metallurgy, no. 00 (2020): 25. http://dx.doi.org/10.2298/jmmb190312025s.

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In the present study, feasibility of aluminothermic reduction of molybdenum oxide by microwave oven was studied. Furthermore, the effect of compaction pressure, the amount of used Al and CaO, as flux on aluminothermic reduction of molybdenum oxide were investigated. Thermodynamic analysis of the corresponding reaction indicated that, aluminothermic reduction of MoO3 is possible at all temperatures. XRD patterns and thermodynamic investigation of reaction products indicated that aluminothermic reduction of molybdenum oxide progressed through the formation of intermediate phases such as Al2 (MoO
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2

Norouzi, Nazgol, Darrell Omo-Lamai, Timofey Averianov, Farbod Alimohammadi, and Ekaterina Pomerantseva. "Molybdenum Oxide/Dopamine-Derived Carbon Electrodes with Enhanced Electrochemical Activity in Energy Storage Systems." ECS Meeting Abstracts MA2022-02, no. 2 (2022): 137. http://dx.doi.org/10.1149/ma2022-022137mtgabs.

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Herein, a versatile sol-gel reaction produces new electrode materials consisting of tightly integrated molybdenum oxide and carbon derived from chemically incorporated dopamine molecules, and the materials show enhanced electrochemical activity in nonaqueous Li-ion and aqueous Zn-ion energy storage systems. The novel synthesis entails the oxidation of molybdenum in aqueous solutions of excess and limited dopamine (Dopa) hydrochloride via a hydrogen peroxide-initiated process. The transformation of molybdenum under the condition of Dopa excess (Mo:Dopa molar ratio of 1:1) resulted in the format
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3

Ahmad, Danial, M. Amer Khan, Arslan Mahmood, Amjad Sohail, and S. S. Ali Gillani. "Structural and optical properties of molybdenum oxide thin films prepared by the dip coating technique." European Physical Journal Applied Physics 93, no. 3 (2021): 30301. http://dx.doi.org/10.1051/epjap/2021200366.

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Due to their excellent structural and optical properties of molybdenum oxide thin films are used in various applications such as gas-sensing, solar cells, optoelectronic and medical physics. The present study is related to the synthesis of molybdenum oxide thin films prepared by dip coating technique and the films were characterized by using various techniques such as XRD, SEM and UV-visible spectroscopy. The monoclinic crystal structure and the crystallite size (29.16–52.77 nm) was investigated by X rays diffraction (XRD) analysis. SEM micrograph was used to identify the nano tubes in MoO3 th
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4

Samsuri, Alinda, Fairous Salleh, Tengku Shafazila Tengku Saharuddin, Rizafizah Othaman, Mohamed Wahab Mohamed Hisham, and Mohd Ambar Yarmo. "Effect of Noble Metal Silver on the Reduction Behaviour of Molybdenum Oxide Using Carbon Monoxide." Materials Science Forum 888 (March 2017): 377–81. http://dx.doi.org/10.4028/www.scientific.net/msf.888.377.

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The reduction behavior of silver doped molybdenum trioxide (Ag/MoO3) and undoped MoO3 by using carbon monoxide, CO were investigated by using temperature programmed reduction (TPR). The reduced phases were characterized by X-ray diffraction (XRD). In the carbon monoxide atmosphere, the XRD results indicated that the reduction of Ag/MoO3 and undoped MoO3 to MoO2 phase proceed in two steps (MoO3 → Mo4O11 → MoO2) with Mo4O11 present as an intermediate state. A complete reduction to metallic molybdenum for both samples cannot occurred since in an excess CO atmosphere, MoO2 is promoted to form carb
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5

Дементьев, П. А., Е. В. Иванова, М. Н. Лапушкин, Д. А. Смирнов та С. Н. Тимошнев. "Электронная структура ультратонкой пленки окисла молибдена". Физика твердого тела 62, № 10 (2020): 1618. http://dx.doi.org/10.21883/ftt.2020.10.49906.121.

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The electronic structure of an ultra-thin molybdenum oxide film obtained by oxidation of molybdenum at an oxygen pressure of 1 Torr and the effect of adsorption of sodium atoms Na on its electronic structure are studied by ultra-vacuum photoelectron spectroscopy in ultrahigh vacuum. Photoemission spectra from the valence band and core levels of O 2s, Mo 3d Mo 3p, and Na 1p are studied, upon synchrotron excitation in the photon energy range 80 − 600 eV. It is shown that in the formed oxide film, molybdenum is in two states: Mo6+ and Mo4+. On the surface of the oxide, oxygen is induced both in t
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6

Wang, Hua, Tianyi Li, Ahmed M. Hashem, et al. "Nanostructured Molybdenum-Oxide Anodes for Lithium-Ion Batteries: An Outstanding Increase in Capacity." Nanomaterials 12, no. 1 (2021): 13. http://dx.doi.org/10.3390/nano12010013.

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This work aimed at synthesizing MoO3 and MoO2 by a facile and cost-effective method using extract of orange peel as a biological chelating and reducing agent for ammonium molybdate. Calcination of the precursor in air at 450 °C yielded the stochiometric MoO3 phase, while calcination in vacuum produced the reduced form MoO2 as evidenced by X-ray powder diffraction, Raman scattering spectroscopy, and X-ray photoelectron spectroscopy results. Scanning and transmission electron microscopy images showed different morphologies and sizes of MoOx particles. MoO3 formed platelet particles that were lar
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7

Milyukova, Irina V., and Marina P. Boronenko. "SHS robust modes to restore molybdenum by combustion wave in MoO3 – Al system." Yugra State University Bulletin 15, no. 4 (2020): 27–32. http://dx.doi.org/10.17816/byusu2019427-32.

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The work is devoted to the technology for the reduction of molybdenum from oxides by the method of self-propagating high-temperature synthesis in the MoO3 AI system with the addition of aluminum. The experiment was carried out in two modes: in a reactor at different pressures without preliminary heating and in a furnace in air until the initiation of the SH-synthesis process. Samples of molybdenum metal were obtained in different synthesis modes. X-ray phase and X-ray spectral analysis showed that molybdenum is the main phase in the synthesized samples. The presence of slag oxide phases Al2O3
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8

Samsuri, Alinda, Tengku Shafazila Tengku Saharuddin, Fairous Salleh, Rizafizah Othaman, Mohamed Wahab Mohamed Hisham, and Mohd Ambar Yarmo. "Study on the Reduction Behavior of Molybdenum Oxide (MoO3) in Carbon Monoxide (CO) Atmosphere." Materials Science Forum 840 (January 2016): 299–304. http://dx.doi.org/10.4028/www.scientific.net/msf.840.299.

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The reduction behavior of molybdenum trioxide (MoO3) by carbon monoxide (CO) has been studied using temperature programmed reduction (TPR) and was characterized using X-ray diffraction spectroscopy (XRD). The TPR result shows that the first reduction peak of MoO3 under 20 vol. % CO in nitrogen started at 530 °C and second reduction peaks observed was at 700 °C. The XRD technique was employed to identify the changes in the sample. It was found that after non-isothermal reduction up to 700 °C, the intermediate phases Mo4O11 were observed. Completed reduction to MoO2 achieved after continued redu
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9

Kim, Gil Su, Dae Gun Kim, Sung Tag Oh, Myung Jin Suk, and Young Do Kim. "Effect of Cu during Non-Isothermal Hydrogen Reduction of MoO3." Materials Science Forum 534-536 (January 2007): 1253–56. http://dx.doi.org/10.4028/www.scientific.net/msf.534-536.1253.

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The effect of Cu on the hydrogen reduction of molybdenum oxide powders was investigated by measuring the humidity change during a non-isothermal process of hydrogen reduction. The presence of Cu induced a shift in the reduction temperature and strongly affected the reduction processes of MoO3→Mo4O11→MoO2, which comprised the contained chemical vapor transport of MoOx(OH)2. This study suggests that the surface of the Cu grains acts as a nucleation site for the reduction of MoOx(OH)2 to MoO2 particles from MoO3 or Mo4O11 phases. Such an activated reduction process results in the deposition of me
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10

Ramezanalizadeh, H., and Saeed Heshmati-Manesh. "Mechanochemical Reduction of MoO3 Powder by Silicone to Synthesize Nanocrystalline MoSi2." Advanced Materials Research 264-265 (June 2011): 1364–69. http://dx.doi.org/10.4028/www.scientific.net/amr.264-265.1364.

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Molybdenum disiliside is known as a ceramic material with attractive properties for high temperature structural applications. In this study, mechanical alloying was used to produce MoSi2 powder directly from molybdenum oxide. Mixture of MoO3 and Si powders with commercial purity were exposed to high mechanical activation in a planetary ball mill. The ball to powder mass ratio was selected to be constant at 33:1 and the rotation speed (cup speed) was 600 rpm during the milling operations. Crystallite sizes and structural evolutions during milling were investigated by Xray diffraction analysis.
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11

Sylla, Ndeye F., Samba Sarr, Ndeye M. Ndiaye, et al. "Enhanced Electrochemical Behavior of Peanut-Shell Activated Carbon/Molybdenum Oxide/Molybdenum Carbide Ternary Composites." Nanomaterials 11, no. 4 (2021): 1056. http://dx.doi.org/10.3390/nano11041056.

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Biomass-waste activated carbon/molybdenum oxide/molybdenum carbide ternary composites are prepared using a facile in-situ pyrolysis process in argon ambient with varying mass ratios of ammonium molybdate tetrahydrate to porous peanut shell activated carbon (PAC). The formation of MoO2 and Mo2C nanostructures embedded in the porous carbon framework is confirmed by extensive structural characterization and elemental mapping analysis. The best composite when used as electrodes in a symmetric supercapacitor (PAC/MoO2/Mo2C-1//PAC/MoO2/Mo2C-1) exhibited a good cell capacitance of 115 F g−1 with an a
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12

Aldosari, Norah, William Poston, Gregory Jensen, Maryam Bizhani, Muhammad Tariq, and Eric Stinaff. "Controlled Oxidation of Metallic Molybdenum Patterns via Joule Heating for Localized MoS2 Growth." Nanomaterials 15, no. 2 (2025): 131. https://doi.org/10.3390/nano15020131.

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High-quality two-dimensional transition metal dichalcogenides (2D TMDs), such as molybdenum disulfide (MoS2), have significant potential for advanced electrical and optoelectronic applications. This study introduces a novel approach to control the localized growth of MoS2 through the selective oxidation of bulk molybdenum patterns using Joule heating, followed by sulfurization. By passing an electric current through molybdenum patterns under ambient conditions, localized heating induced the formation of a molybdenum oxide layer, primarily MoO2 and MoO3, depending on the applied power and heati
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13

Han, Ji-Yuan, Sheng-Hao Cai, Ji-Yu Zhu, Shuang Yang, and Ji-Sen Li. "MOF-derived ruthenium-doped amorphous molybdenum dioxide hybrid for highly efficient hydrogen evolution reaction in alkaline media." Chemical Communications 58, no. 1 (2022): 100–103. http://dx.doi.org/10.1039/d1cc05683b.

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14

Serrapede, Mara, Marco Fontana, Arnaud Gigot, et al. "A Facile and Green Synthesis of a MoO2-Reduced Graphene Oxide Aerogel for Energy Storage Devices." Materials 13, no. 3 (2020): 594. http://dx.doi.org/10.3390/ma13030594.

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A simple, low cost, and “green” method of hydrothermal synthesis, based on the addition of l-ascorbic acid (l-AA) as a reducing agent, is presented in order to obtain reduced graphene oxide (rGO) and hybrid rGO-MoO2 aerogels for the fabrication of supercapacitors. The resulting high degree of chemical reduction of graphene oxide (GO), confirmed by X-Ray Photoelectron Spectroscopy (XPS) analysis, is shown to produce a better electrical double layer (EDL) capacitance, as shown by cyclic voltammetric (CV) measurements. Moreover, a good reduction yield of the carbonaceous 3D-scaffold seems to be a
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15

Tolea, Felicia, Monica Sorescu, Lucian Diamandescu, Nicusor Iacob, Mugurel Tolea, and Victor Kuncser. "Unidirectional Magnetic Anisotropy in Molybdenum Dioxide–Hematite Mixed-Oxide Nanostructures." Nanomaterials 12, no. 6 (2022): 938. http://dx.doi.org/10.3390/nano12060938.

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MoO2-Fe2O3 nanoparticle systems were successfully synthesized by mechanochemical activation of MoO2 and α-Fe2O3 equimolar mixtures throughout 0–12 h of ball-milling. The role of the long-range ferromagnetism of MoO2 on a fraction of more defect hematite nanoparticles supporting a defect antiferromagnetic phase down to the lowest temperatures was investigated in this work. The structure and the size evolution of the nanoparticles were investigated by X-ray diffraction, whereas the magnetic properties were investigated by SQUID magnetometry. The local electronic structure and the specific phase
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16

Chiawchan, Tinna, Harihara Ramamoorthy, Kanokwan Buapan, and Ratchanok Somphonsane. "CVD Synthesis of Intermediate State-Free, Large-Area and Continuous MoS2 via Single-Step Vapor-Phase Sulfurization of MoO2 Precursor." Nanomaterials 11, no. 10 (2021): 2642. http://dx.doi.org/10.3390/nano11102642.

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The low evaporation temperature and carcinogen classification of commonly used molybdenum trioxide (MoO3) precursor render it unsuitable for the safe and practical synthesis of molybdenum disulfide (MoS2). Furthermore, as evidenced by several experimental findings, the associated reaction constitutes a multistep process prone to the formation of uncontrolled amounts of intermediate MoS2−yOy phase mixed with the MoS2 crystals. Here, molybdenum dioxide (MoO2), a chemically more stable and safer oxide than MoO3, was utilized to successfully grow cm-scale continuous films of monolayer MoS2. A high
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17

Guzmán, Héctor J., Wenqian Xu, Dario Stacchiola, et al. "In situ time-resolved X-ray diffraction study of the synthesis of Mo2C with different carburization agents." Canadian Journal of Chemistry 91, no. 7 (2013): 573–82. http://dx.doi.org/10.1139/cjc-2012-0516.

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Toluene, n-heptane, and methane were studied as carbon sources during the synthesis of Mo2C. Ammonium heptamolybdate ((NH4)6Mo7O24·4H2O), molybdenum dioxide (MoO2), orthorhombic molybdenum trioxide (α-MoO3), and a low crystallinity molybdenum oxide (MoOx) were employed as metal precursors and their conversion into the carbide phase was followed by time-resolved X-ray diffraction from synchrotron radiation. Thermal treatment was carried out from 298 K up to 1023 K and the evolution of gases analyzed by mass spectrometry. The resulting carbidic phase obtained using methane/H2 was hexagonal β-Mo2
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18

Wang, Lixia, Taibao Zhao, Ruiping Chen, et al. "Molybdenum Nitride and Oxide Quantum Dot @ Nitrogen-Doped Graphene Nanocomposite Material for Rechargeable Lithium Ion Batteries." Batteries 9, no. 1 (2022): 32. http://dx.doi.org/10.3390/batteries9010032.

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A multistage architecture with molybdenum nitride and oxide quantum dots (MON-QDs) uniformly grown on nitrogen-doped graphene (MON-QD/NG) is prepared by a facile and green hydrothermal route followed by a one-step calcination process for lithium ion batteries (LIBs). Characterization tests show that the MON-QDs with diameters of 1–3 nm are homogeneously anchored on or intercalated between graphene sheets. The molybdenum nitride exists in the form of crystalline Mo2N (face-centered cubic), while molybdenum oxide exists in the form of amorphous MoO2 in the obtained composite. Electrochemical tes
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19

Hegde, Sharath, Udaya B. Patri, and S. V. Babu. "Chemical-mechanical Polishing of Copper Using Molybdenum Dioxide Slurry." Journal of Materials Research 20, no. 9 (2005): 2553–61. http://dx.doi.org/10.1557/jmr.2005.0305.

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Slurries containing molybdenum oxide abrasives (MoO2, isoelectric point ∼pH 2) with potassium iodate (KIO3) as the oxidizing agent were used to polish copper disks and films, yielding relatively high removal rates. The relatively high copper removal rates observed were due to the in situ generation of I2 by the reaction between KIO3 and MoO2. The surface quality of the polished Cu films, however, was very poor with surface roughness values as high as 140 nm. A second polishing step using a dilute colloidal silica suspension containing H2O2, benzotriazole, and glycine at pH 4 improved the post-
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20

SU, CHANGWEI, MENGCHAO YE, YANG BAI, JIANPING HOU, and JUNMING GUO. "INDUCED ELECTRODEPOSITION OF AMORPHOUS MOLYBDENUM (IV) OXIDE FILM BY Ni2+ AND ITS ABILITY OF LITHIUM STORAGE." Surface Review and Letters 24, no. 05 (2016): 1750070. http://dx.doi.org/10.1142/s0218625x17500706.

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Amorphous molybdenum oxide films with almost 20[Formula: see text][Formula: see text]m thickness are electrodeposited on the Cu foils from a citrate-ammonia molybdate bath containing Ni[Formula: see text] ions. The content of Ni in the oxide films is very low, 0.87 at.%. XRD and FTIR data suggest that they are composed of hydrous MoO2. The multilayer and cracked structures are characterized by scanning electron microscopy (SEM), and are beneficial to transmission of Li[Formula: see text] ions between the electrolyte and anode materials. Galvanostatic battery testing shows that amorphous molybd
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21

Lee, Bobae. "Regulating Molybdenum Dissolution through Controlled Oxide Phase Formation in CMP with Catalytic Oxidation." ECS Meeting Abstracts MA2024-02, no. 18 (2024): 4975. https://doi.org/10.1149/ma2024-02184975mtgabs.

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Molybdenum (Mo) is a promising candidate for replacing tungsten in next-generation semiconductor processes due to its lower electrical resistivity and superior gap-filling capabilities. Despite its properties, the high dissolution of Mo during chemical mechanical planarization (CMP) leads to surface deterioration and device failure, limiting its practical application. Mo CMP, like other metal CMP, uses hydrogen peroxide (H2O2) to form and then remove metal oxide layers. However, H2O2 is a strong oxidant at a commonly used pH, and thus soluble Mo (Ⅵ) oxide (i.e., MoO3) formation cannot be avoid
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22

Ma, Jianchun, Lifang Wang, Yezhen Zhang, and Jianfeng Jia. "Fabrication of a Molybdenum Dioxide/Multi-Walled Carbon Nanotubes Nanocomposite as an Anodic Modification Material for High-Performance Microbial Fuel Cells." Molecules 29, no. 11 (2024): 2541. http://dx.doi.org/10.3390/molecules29112541.

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A nanocomposite of multi-walled carbon nanotubes (MWCNTs) decorated with molybdenum dioxide (MoO2) nanoparticles is fabricated through the reduction of phosphomolybdic acid hydrate on functionalized MWCNTs in a hydrogen–argon (10%) atmosphere in a tube furnace. The MoO2/MWCNTs composite is proposed as an anodic modification material for microbial fuel cells (MFCs). MWCNTs have outstanding physical and chemical peculiarities, with functionalized MWCNTs having substantially large electroactive areas. In addition, combined with the exceptional properties of MoO2 nanoparticles, the synergistic adv
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23

McCrory, Michael, Ashok Kumar, and Manoj K. Ram. "Hydrothermal Synthesis of MoO2 Nanoparticles Directly onto a Copper Substrate." MRS Advances 1, no. 15 (2016): 1051–54. http://dx.doi.org/10.1557/adv.2016.238.

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ABSTRACTRecently, molybdenum oxide (MoO2) has been found to be a chemically stable and relatively inexpensive material for the application as the anode in a lithium ion battery [1-5]. We believe the use of MoO2 in battery applications has been hindered due to a long, complicated, and multistep synthesis process. We present a simple one-pot hydrothermal technique to synthesize MoO2 nanoparticles directly onto a copper (Cu) substrate.We believe this is a first report of the synthesis of MoO2 directly onto a Cu substrate, and could lead to the ability to both fabricate other materials in a simila
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24

Popczyk, Magdalena, and B. Łosiewicz. "Effect of Molybdenum(IV) Oxide on the Process of Hydrogen Evolution on Ni+Mo Electrolytic Composite Coatings." Solid State Phenomena 228 (March 2015): 277–82. http://dx.doi.org/10.4028/www.scientific.net/ssp.228.277.

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The Ni+Mo and Ni+MoO2+Mo composite coatings were electrodeposited at the constant deposition current density ofjdep= -200 mA cm-2from the nickel plating bath containing powder of Mo or MoO2and Mo. The investigations of hydrogen evolution reaction (HER) were carried out in 5 M KOH solution at room temperature using steady-state polarization and electrochemical impedance spectroscopy (EIS) techniques. It was found that for the Ni+MoO2+Mo composite coating the increase in the activity of HER was observed in comparison with Ni+Mo composite coating probably due to the more porous surface and presen
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25

Trotta, Richard, Felicia Tolea, Mihaela Valeanu, Lucian Diamandescu, Agnieszka Grabias, and Monica Sorescu. "Structural, Magnetic and Hyperfine Properties of Molybdenum Dioxide-Hematite Mixed Oxide Nanostructures." MRS Advances 3, no. 47-48 (2018): 2887–92. http://dx.doi.org/10.1557/adv.2018.420.

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ABSTRACTMoO2-Fe2O3 nanoparticle system was successfully synthesized by mechanochemical activation of MoO2 and α-Fe2O3 equimolar mixtures for 0-12 hours of ball milling time. The study aims at exploring the formation of magnetic oxide semiconductors at the nanoscale. X-ray powder diffraction (XRD), Mössbauer spectroscopy and magnetic measurements were used to study the phase evolution of MoO2-Fe2O3 nanoparticle system under the mechanochemical activation process. The Mössbauer studies showed that the spectrum of the mechanochemically activated composites evolved from a sextet for hematite to se
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26

Volkovich, Vladimir A., Alexander A. Ryzhov, Milana S. Kitik, et al. "(Digital Presentation) Electrodeposition of Uranium Dioxide from Li2MoO4-K2MoO4-MoO3 Based Melts: An Effect of Melt Composition." ECS Transactions 109, no. 14 (2022): 65–73. http://dx.doi.org/10.1149/10914.0065ecst.

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The effect of electrolysis conditions on the composition of cathodic products formed in Li2MoO4–K2MoO4–MoO3–UO2MoO4 melts was investigated. The experiments were performed in the melts based on (1–x)(0.605Li2MoO4–0.395K2MoO4)–xMoO3 mixtures (x = 0.3–0.5) at 550–800 oC. Electrolysis was performed in the galvanostatic mode on platinum cathode. The initial current density was varied between 0.05–1 A/cm2. Depending on the electrolysis conditions the cathodic deposits consisted of UO2+x, U4O9–y, U1,5Mo10O32, Mo2UO8 and MoO2 phases. Phase composition and oxygen-to-uranium ratio were determined for th
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27

Larionov, Alexey V., Ludmila Y. Udoeva, and Vladimir M. Chumarev. "Thermodynamic simulation of oxidation process of the Moss-Mo3Si hypoeutectic alloy, doped with scandium or neodymium." Butlerov Communications 57, no. 2 (2019): 90–100. http://dx.doi.org/10.37952/roi-jbc-01/19-57-2-90.

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In order to study the effect of yttrium additives on the oxidation of molybdenum silicide alloys, thermodynamic modeling of the interaction in Mo-Mo3Si-Sc5Si3 и Mo-Mo3Si-NdSi systems with dry and moist air was performed in the temperature range 25-2000 °C. The calculations were performed using the HSC Chemistry 6.12 software, into the database of which the calculated missing thermochemical characteristics silicates, molybdates of scandium and neodymium were entered. Based on the obtained dependences of the composition of phases on temperature and charge of the oxidant (air or vapor-air mixture
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28

Esquenazi, Gibran, and Andrew Barron. "Investigation of the Reduction of a Molybdenum/Iron Molecular Nanocluster Single Source Precursor." Inorganics 6, no. 4 (2018): 104. http://dx.doi.org/10.3390/inorganics6040104.

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The thermolysis of the polyoxometalate cluster [HxPMo12O40⊂H4Mo72Fe30(O2CMe)15O254(H2O)90−y(EtOH)y] (1) under air, argon, and reducing conditions (5%, 10%, 50% H2 with Ar balance) has been investigated. The resulting products have been characterized by XRD, SEM, and EDX analysis. Thermolysis in air at 1100 °C yields predominantly Fe2O3, due to sublimation of the molybdenum component; however, under Ar atmosphere, the mixed metal oxide (Fe2Mo3O8) is formed along with Mo and MoO2. Introduction of 5% H2 (1100 °C) results in the alloy Fe2Mo3 in addition to Fe2Mo3O8 and Mo; in contrast, reduction a
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29

Qing, Yubin, Kaijun Yang, Yaofeng Chen, et al. "Thermal Stability, Optical and Electrical Properties of Substoichiometric Molybdenum Oxide." Materials 16, no. 7 (2023): 2841. http://dx.doi.org/10.3390/ma16072841.

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Substoichiometric molybdenum oxide ceramics have aroused widespread interest owing to their promising optical and electrical performance. In this work, the thermal stability and decomposition mechanism of Mo9O26 and Mo4O11 at 700–1000 °C and 700–1100 °C were investigated, respectively. Based on this information, MoOx (2 < x < 3) bulk ceramics were prepared by spark plasma sintering (SPS). The results show that Mo9O26 is stable up to 790 °C in an argon atmosphere. As the temperature rises, it decomposes into Mo4O11. Mo4O11 can exist stably at 830 °C, beyond which it will convert to MoO2.
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30

Puppala, Harsha K., Anthony T. Pelton, and Robert A. Mayanovic. "A Comparative Characterization Study of Molybdenum Oxide Thin Films Grown Using Femtosecond and Nanosecond Pulsed Laser Deposition." MRS Advances 1, no. 37 (2016): 2585–90. http://dx.doi.org/10.1557/adv.2016.245.

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ABSTRACTGroup 6 transition metal oxide thin films are in large demand for photocatalysis, heterogeneous catalysis, fuel cell, battery and electronic applications. Pulsed laser deposition offers an inexpensive method for the preparation of nanostructured thin films that may be suitable for heterogeneous catalysis. We have synthesized molybdenum oxide thin films using two types of pulsed laser deposition (PLD). The first method utilizes femtosecond laser-based PLD (f-PLD) while the second method uses an excimer (nanosecond) laser-based PLD (n-PLD). The PLD films have been deposited using f-PLD a
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31

Larionov, Alexey V., Ludmila Y. Udoeva, and Vladimir M. Chumarev. "Thermodynamic simulation of oxidation process of the Moss-Mo3Si hypoeutectic alloy, doped with yttrium." Butlerov Communications 57, no. 2 (2019): 101–10. http://dx.doi.org/10.37952/roi-jbc-01/19-57-2-101.

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In order to study the effect of yttrium additives on the oxidation of molybdenum silicide alloys, thermodynamic modeling of the interaction in the Mo-Mo3Si-Y5Si3 system with dry and moist air was performed in the temperature range 25-2000 °C. To predict the composition of oxidation products and the sequence of the formation of phase components, the dependences on the temperature and consumption of oxidants – water vapor and oxygen of the air – are obtained. The calculations were performed using the HSC Chemistry 6.12 software, into the database of which the calculated missing thermochemical ch
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32

Balcar, Hynek, Diwa Mishra, Eric Marceau, Xavier Carrier, Naděžda Žilková, and Zdeněk Bastl. "Molybdenum oxide catalysts for metathesis of higher 1-alkenes via supporting MoO2(acetylacetonate)2 and MoO2(glycolate)2 on SBA-15 mesoporous molecular sieves." Applied Catalysis A: General 359, no. 1-2 (2009): 129–35. http://dx.doi.org/10.1016/j.apcata.2009.02.037.

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33

Christiansen, Alexander F., Helmer Fjellvåg, Arne Kjekshus, and Bernt Klewe. "Synthesis and characterization of molybdenum(VI) oxide sulfates and crystal structures of two polymorphs of MoO2(SO4)." Journal of the Chemical Society, Dalton Transactions, no. 6 (2001): 806–15. http://dx.doi.org/10.1039/b007675i.

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34

Abdirahman Mohamed, Mana, Oliver Janka, Susanne Harling, and Guido Kickelbick. "Precursor-Based Syntheses of Mo(C,N,O)x, Molybdenum Carbide, Nitride, and Oxide Applying a Microjet Reactor." Solids 5, no. 3 (2024): 443–59. http://dx.doi.org/10.3390/solids5030030.

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Composite materials such as molybdenum carbides, nitrides, oxides, and mixed anionic compounds like Mo(C,N,O)x embedded in carbonaceous matrix exhibit promising potential as anode materials for lithium batteries, with a preference for fine-grained morphologies. In this study, we present a novel synthetic approach involving an inorganic–organic hybrid precursor precipitated from aqueous solutions of ammonium heptamolybdate and one of two organic species: 1,8-diaminonaphthalene (1,8-DAN) or hexamethylenediamine (HMD). The precipitation reaction can be carried out in a beaker and in a continuous
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35

de Melo, O., F. Agulló-Rueda, and V. Torres-Costa. "Spatially resolved MoOx phases by the laser oxidation of MoO2: a possible route for all-molybdenum oxide devices." Journal of Materials Chemistry C 9, no. 20 (2021): 6579–88. http://dx.doi.org/10.1039/d1tc00696g.

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36

Il’in, E. G., A. G. Beirakhov, V. G. Yarzhemsky, A. E. Gekhman, and A. K. Buryak. "MALDI-TOF Mass Spectrometry of Nanosized MoO2. Structure and Relative Stability of Isomers of Lower Molybdenum Oxide Cations." Russian Journal of Inorganic Chemistry 63, no. 4 (2018): 492–502. http://dx.doi.org/10.1134/s0036023618040113.

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37

Sharma, Lalita, Himmat Singh Khushwaha, Ankita Mathur, and Aditi Halder. "Role of molybdenum in Ni-MoO2 catalysts supported on reduced graphene oxide for temperature dependent hydrogen evolution reaction." Journal of Solid State Chemistry 265 (September 2018): 208–17. http://dx.doi.org/10.1016/j.jssc.2018.06.005.

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38

Slesinski, Adam, and Elzbieta Frackowiak. "(Invited) Metal Oxide Mixed Sulphide of Controlled Crystal Structure As Catalysts for Two-Electron Water Oxidation." ECS Meeting Abstracts MA2023-02, no. 58 (2023): 2820. http://dx.doi.org/10.1149/ma2023-02582820mtgabs.

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Conventional catalysts based on noble metals (Pt, Ru) are often used for production of oxygen during water electrolysis in four-electron pathway as they can decrease gas evolution overpotential. Another possible valuable product from water oxidation is hydrogen peroxide obtained via two-electron process. Currently, transition metal oxides, are readily employed to catalyse this reaction. Although they display certain activity, it is still not satisfactory for mass production of H2O2, therefore further optimisations are needed. We suggest in this work, in addition to typical nanostructure modifi
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Mateus, Marcos Vinícius, Mário Sérgio da Luz, Rogério Valentim Gelamo, Diego Andrade Lemos, Cristiano Poleto, and Julio Cesar de Souza Inácio Gonçalves. "Study of the catalytic activity of multilayer graphene (MLG), molybdenum oxide (MoO2), and manganese ferrite (MnFe2O4) on the melanoidin removal by ozonation process." Brazilian Journal of Chemical Engineering 39, no. 1 (2021): 55–66. http://dx.doi.org/10.1007/s43153-021-00198-z.

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40

Del Río, José Daniel, Gustavo Andrés Durán, Álvaro Orjuela Londoño, Francisco José Sánchez Castellanos, and Carlos Alberto Guerrero Fajardo. "Partial oxidation of methane to formaldehyde on MoO3, Fe2O3 and ferromolybdenum catalysts." Ingeniería e Investigación 27, no. 1 (2007): 19–24. http://dx.doi.org/10.15446/ing.investig.v27n1.14773.

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One of the main challenges for catalysis has been direct methane conversion to useful products such as methanol and formaldehyde. Formaldehyde is currently produced by a three-step industrial process with syngas and methanol as intermediate products. MoO3 Fe2O3, and Fe2(MoO4)3 catalysts were used with four different Mo/Fe molar ratios (0.5, 1, 1.5, 2) in this work. The ferromolybdenum catalyst was prepared by coprecipitation. Pure oxides are more active; however they are not formaldehyde selective, but carbon oxide (CO, CO2) selective. The ferromolybdenum catalysts showed better HCHO selectivi
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41

Kim, Hyunwoo, Chang-Dae Lee, Dong In Kim, Woosung Choi, Dong-Hwa Seo, and Won-Sub Yoon. "Bonding dependent lithium storage behavior of molybdenum oxides for next-generation Li-ion batteries." Journal of Materials Chemistry A 10, no. 14 (2022): 7718–27. http://dx.doi.org/10.1039/d2ta00356b.

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Metallic lithium storage occurs in MoO2, whereas MoO3 store lithium by conversion reaction. First-principles calculations demonstrate that the different electrochemical properties originated from the different metal–oxygen bonding of MoO2 and MoO3.
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42

Zribi, Rayhane, and Giovanni Neri. "Mo-Based Layered Nanostructures for the Electrochemical Sensing of Biomolecules." Sensors 20, no. 18 (2020): 5404. http://dx.doi.org/10.3390/s20185404.

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Mo-based layered nanostructures are two-dimensional (2D) nanomaterials with outstanding characteristics and very promising electrochemical properties. These materials comprise nanosheets of molybdenum (Mo) oxides (MoO2 and MoO3), dichalcogenides (MoS2, MoSe2, MoTe2), and carbides (MoC2), which find application in electrochemical devices for energy storage and generation. In this feature paper, we present the most relevant characteristics of such Mo-based layered compounds and their use as electrode materials in electrochemical sensors. In particular, the aspects related to synthesis methods, s
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Shao, Ke, Hai mei Luo, and Hui qun Cao. "Inducing growth of highly ordered molybdenum oxide nanoplates under ambient conditions." Journal of Materials Research 23, no. 10 (2008): 2602–8. http://dx.doi.org/10.1557/jmr.2008.0344.

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Large area uniform nanoplates of molybdenum oxide (MoO3), a typical semiconductor material, have been synthesized under soft conditions by using carboxymethyl cellulose (CMC) as template. Under ambient condition, hydrolysis of ammonium molybdate into layered molybdenum oxide, and its subsequent inclusion of CMC polymers results in formation of lamellar CMC/molybdenum oxide hybrid. Calcinations of this lamellar hybrid at 500 °C lead to formation of large area uniform nanoplates of orthorhombic phase of MoO3. Scanning electron microscopy and transmission electron microscopy images show that thes
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44

Szoszkiewicz, Robert, Maciej Rogala, and Paweł Dąbrowski. "Surface-Bound and Volatile Mo Oxides Produced During Oxidation of Single MoS2 Crystals in Air and High Relative Humidity." Materials 13, no. 14 (2020): 3067. http://dx.doi.org/10.3390/ma13143067.

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We report on the MoO3 oxides and their derivatives on microscopic 2H MoS2 flakes oxidized in air and high relative humidity at a moderate temperature range below 410 °C. We combine XPS and AFM measurements such as topography, friction, creation of nanoscale ripples and scratches on the MoS2 flakes deposited on Si substrates. We detect MoO3 oxides mostly by measuring selected nanomechanical properties of the MoO3 layer, such as its compressive mechanical stress at the plastic yield. We discuss basal surface coverage of the single MoS2 flakes by the MoO3 oxides. We discuss conditions for appeara
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45

Vincent, Rebecca C., Anthony K. Cheetham, and Ram Seshadri. "Structure and lithium insertion in oxides of molybdenum." APL Materials 11, no. 1 (2023): 010902. http://dx.doi.org/10.1063/5.0133518.

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Oxides of molybdenum, MoO x, have a rich structural chemistry arising from the accommodation of oxygen deficiency as MoO3 is reduced and varied redox behavior arising from the ability of Mo to take on several different oxidation states. We review MoO3, MoO2, and all the reduced Mo oxides with intermediate compositions for their performance as Li-ion battery electrode materials. These reduced oxides are perhaps the most structurally diverse in the field of energy storage materials, taking on structures ranging from ones with crystallographic shear to bronze-like structures and distorted rutile.
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46

Nagano, Masamitsu, and Martha Greenblatt. "Preparation of reduced molybdenum oxides (MoO2MoO3) by a sol-gel method." Journal of Non-Crystalline Solids 101, no. 2-3 (1988): 255–62. http://dx.doi.org/10.1016/0022-3093(88)90161-5.

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47

Vincent, Rebecca, Anthony K. Cheetham, and Ram Seshadri. "Structure and Lithium Insertion in Oxides of Molybdenum." ECS Meeting Abstracts MA2023-01, no. 2 (2023): 467. http://dx.doi.org/10.1149/ma2023-012467mtgabs.

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Oxides MoOx of molybdenum have a rich structural chemistry arising from the accommodation of oxygen deficiency as MoO3 is reduced, and varied redox behavior arising from the ability of Mo to take on several different oxidation states. We have reviewed MoO3, MoO2, and all the reduced Mo oxides with intermediate compositions for their performance as Li-ion battery electrode materials. These reduced oxides are perhaps the most structurally diverse in the field of energy storage materials, taking on structures ranging from ones with crystallographic shear to bronze-like structures and distorted ru
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48

Pergament, A. L., V. P. Malinenko, L. A. Aleshina, E. L. Kazakova, and N. A. Kuldin. "Electrical Switching in Thin Film Structures Based on Molybdenum Oxides." Journal of Experimental Physics 2014 (September 18, 2014): 1–6. http://dx.doi.org/10.1155/2014/951297.

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We report on the experimental study of electrical instabilities in thin film structures on the basis of molybdenum oxides. Thin films of molybdenum oxide are obtained by thermal vacuum evaporation and anodic oxidation. The results of X-ray structural analysis, investigation of optical and electrical properties, are presented. It is shown that the initial vacuum-deposited oxide represents amorphous MoO3. In the MOM (metal-oxide-metal) structures with Mo oxide films obtained by the two methods, the effect of electrical switching with an S-shaped current-voltage characteristic is found. We put fo
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49

Kim, Sang-Chai, Young-Kwon Park, Hangun Kim, Heon Lee, and Sang-Chul Jung. "Fabrication of Molybdenum Oxide/Activated Carbon Using Liquid Phase Plasma Reaction and Its Electrochemical Performance." Journal of Nanoscience and Nanotechnology 20, no. 9 (2020): 5579–82. http://dx.doi.org/10.1166/jnn.2020.17621.

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In this study, molybdenum oxide/carbon nanocomposites (MOCNCs) were prepared by precipitating molybdenum oxide nanoparticles on activated carbon powder using liquid phase plasma process. The molybdenum oxide nanoparticles were impregnated on the AC surface and the amount impregnated was dependent on the concentration of the molybdenum precursor. MoO3 nanoparticles were predominantly precipitated and their size was about 20–80 nm. The specific capacitance of MOCNCs was increased with increasing the amount of molybdenum nanoparticles. Moreover, the resistances of MOCNCs were reduced than that of
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50

Arumugam, Nachiappan, Eva-Maria Peters, and Martin Jansen. "Synthesis and Crystal Structure of K6Mo10O33." Zeitschrift für Naturforschung B 62, no. 1 (2007): 1–4. http://dx.doi.org/10.1515/znb-2007-0101.

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A new potassium molybdenum oxide, K6Mo10O33, was synthesized by solid state reaction from the appropriate quantities of pre-dried MoO3 and K2MoO4, fired at around 650 °C for 2 d. The structure has been solved by using single crystal X-ray diffraction. The compound adopts the space group P1, with the lattice constants a = 7.7100(5), b = 11.9659(8), c = 17.1321(12) A° , α = 86.42 (10), β = 77.18(10), γ = 74.14(10)°. The structure is built up of infinite chains of edge-sharing MoO6 octahedra and groups of four MoO6 octahedra forming Mo4O17 units. These sub-units are connected together by common v
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