Hydrothermal synthesis of mesoporous rod-like nanocrystalline vanadium oxide hydrate V3O7·H2O from hydroquinone and V2O5

Mjejri, Issam; Etteyeb, N.; Sediri, F.

doi:10.1016/j.materresbull.2013.05.051

Cited by 42 publications

(21 citation statements)

References 62 publications

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“… 55 , 57 The band at 284 cm –1 is assigned to V=O bending vibration. 56 − 58 The O–V–O bending vibration is observed at 197 cm –1 . 59 The V–O–V skeleton bending vibration is observed at 145 cm –1 .…”

Section: Resultsmentioning

confidence: 99%

Modification of Graphene Oxide/V₂O₅·nH₂O Nanocomposite Films via Direct Laser Irradiation

Lazauskas

Marcinauskas

Andrulevičius

2020

ACS Appl. Mater. Interfaces

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Herein, photothermal modification of nanocomposite films consisting of hydrated vanadium pentoxide (V 2 O 5 · n H 2 O) nanoribbons wrapped with graphene oxide (GO) flakes was performed via 405 nm direct laser irradiation. The combination of X-ray diffraction, X-ray photoelectron spectroscopy, Raman scattering, transmission electron microscopy, and scanning electron microscopy allowed comprehensive characterization of physical and chemical changes of GO/V 2 O 5 · n H 2 O nanocomposite films upon photothermal modification. The modified nanocomposite films exhibited porous surface morphology (17.27 m 2 g –1 ) consisting of randomly distributed pillarlike protrusions. The photothermal modification process of GO/V 2 O 5 · n H 2 O enhanced the electrical conductivity of nanocomposite from 1.6 to 6.8 S/m. It was also determined that the direct laser irradiation of GO/V 2 O 5 · n H 2 O resulted in considerable decrease of C–O bounds as well as O–H functional groups with an increase of the laser power density.

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Section: Resultsmentioning

confidence: 99%

Modification of Graphene Oxide/V₂O₅·nH₂O Nanocomposite Films via Direct Laser Irradiation

Lazauskas

Marcinauskas

Andrulevičius

2020

ACS Appl. Mater. Interfaces

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“…Comparing the binding energy values of V 5+ (2p 3/2 and 2p 1/2 ) and V 4+ (2p 3/2 and 2p 1/2 ) in KVO and NVO samples, the values slight shifted than the pure V 2 O 5 ·3H 2 O (AVO). The O 1s peak position at a binding energy of 530.2 eV is attributed to VO of V 2 O 5 [47] and the peak at 531.4 eV is due to a hydroxyl group (VOH) bonded with the vanadium atom. [46] Figure 4c,e,h displays the O 1s spectral region, and it was deconvoluted into three peaks showing the existence of three different oxygen species.…”

Section: Resultsmentioning

confidence: 99%

“…[46] Figure 4c,e,h displays the O 1s spectral region, and it was deconvoluted into three peaks showing the existence of three different oxygen species. The O 1s peak position at a binding energy of 530.2 eV is attributed to VO of V 2 O 5 [47] and the peak at 531.4 eV is due to a hydroxyl group (VOH) bonded with the vanadium atom. From the XPS spectral area, the percentage of hydroxyl group was calculated and is AVO ≈ 12.5%, KVO ≈ 12.49%, and NVO ≈ 14.6%, respectively.…”

Section: (4 Of 13)mentioning

confidence: 99%

Vanadium Pentoxide with H₂O, K⁺, and Na⁺ Spacer between Layered Nanostructures for High‐Performance Symmetric Electrochemical Capacitors

Manikandan

Raj

Rajesh

et al. 2018

Adv Materials Inter

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batteries and the power density similar to the electric double-layer capacitors. [1][2][3][4] Generally, the transition metal oxides and conducting polymers are used as the pseudocapacitor electrode materials, [3] since it stores electric charges based on the Faradaic and non-Faradaic reactions arising at the interface of electrode/electrolyte. [5] Several transition metal oxides, metal sulfides, and metal hydroxides have been displayed to be appropriate for the electrodes of supercapacitors. [6] Mostly, transition metal oxides (e.g., RuO 2 , MnO 2 , NiO, and V 2 O 5 ) are widely utilized as the electrode material to attain pseudocapacitive energy storage property due to their multivalence oxidation states. [7] Among the various metal oxides, vanadium pentoxide (V 2 O 5 ) is reflected to be the most capable candidate for pseudocapacitor owing to its natural abundance and existence of variable oxidation states from +2 to +5 (VO, V 2 O 3 , VO 2 , and V 2 O 5 ). [8] In addition, V 2 O 5 possess a higher theoretical capacitance value of ≈2120 F g −1 under a considerable potential window of 1 V, and this is recognized to the higher oxidation state of vanadium to transfer more than one electron instantly. [9,10] So, vanadium pentoxide nanostructures have been the most regarded materials in various applications, [11] such as batteries, [12][13][14] supercapacitors, [15,16] catalyst, [17] optical switching, [18] and energy-saving devices. [19] In supercapacitors, apart from the electrical/electrochemical properties, the specific capacitance of vanadium oxide also depends upon the morphology and synthesis techniques. [20] Recently, different types of nanostructured V 2 O 5 such as nanowires, [21] nanoribbons, [22] nanorods, [23] nanoplatelets, [24] and nanobelts [25] have been applied for supercapacitor electrodes. [26] Moreover, various synthetic methods such as hydrothermal/solvothermal, thermal decomposition, chemical vapor deposition, microwave-assisted synthesis, and sol-gel [27,28] methods have been adopted for the fabrication of different forms of vanadium oxide nanostructures. Among various synthesis techniques, the hydrothermal method is a low-cost, environmentally friendly, and widely used technique for the development of inorganic nanostructures. The hydrothermal method is a scalable and simple method, retaining autoclaves at lower operational temperatures with Vanadium oxide 2D layered nanostructures with the hydrous form of potassium (K + ) and sodium (Na + ) are synthesized via hydrothermal reaction between VOSO 4 · xH 2 O and different persulfate oxidants ((NH 4 ) 2 S 2 O 8 , K 2 S 2 O 8 , and Na 2 S 2 O 8 ). The physicochemical characterization suggests that the synthesized V 2 O 5 · 3H 2 O nanostructures possess layered morphology with considerable amount of water molecules accommodated between the interlayer spacing of nanostructures. Moreover, samples obtained using K 2 S 2 O 8 and Na 2 S 2 O 8 oxidants have K + (6.41%) and Na + (0.38%) ions intercalated on the 2D nanostructure along with the water mole...

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“…The crystal structure of H 2 V 3 O 8 consists of V 3 O 8 layers, held together by hydrogen bonds . The building blocks for each layer are VO 6 octahedra and VO 5 trigonal bipyramids sharing edges and corners . The samples were further characterized by Fourier transform infrared (FT‐IR) and Raman spectra (Figures b and S7, Supporting Information).…”

Section: Resultsmentioning

confidence: 99%

“…The peak at 3409 cm −1 is assigned to the stretching vibration of O–H band. The symmetric band at 1621 cm −1 comes from the δ (H 2 O) vibrations, which indicates the existence of water molecules . The peak at 540 cm −1 corresponds to the stretching vibrations of the υ s (V–O–V) bridging bonds.…”

Section: Resultsmentioning

confidence: 99%

Novel Polygonal Vanadium Oxide Nanoscrolls as Stable Cathode for Lithium Storage

Wei

Shi

Liu

et al. 2015

Adv Funct Materials

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Scroll‐shape structures with adjustable space provide interlayer sliding to accommodate the volume changes, which are promising candidates for increasing the stability of lithium batteries (LBs). In this work, for the first time, novel vanadium oxide polygonal nanoscrolls (PNSs) are synthesized in solution through self‐rolling, Ostwald ripening, and scroll‐by‐scroll processes. The PNSs are of various shapes (including triangle, quadrangle, pentagon, and so forth) and spiral‐wrapped multiwall. When evaluated as cathode for LB, the vanadium oxide PNSs cathode exhibits largely enhanced cycling stability (capacity retention of 91.7% after 150 cycles at 0.1 A g–1 in 2.0–4.0 V) compared with those of nonscrolled nanobelts (40.0%) and nanowires (35.8%). Even at 1.0 A g–1, the PNSs cathode delivers high‐rate long‐life performance with capacity retention of 80.6% after 500 cycles. The unique polygonal nanoscroll structure is favorable for improving the cyclability and rate capability in energy storage applications as demonstrated here, and it will be interesting and has great potential for other related applications.

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Hydrothermal synthesis of mesoporous rod-like nanocrystalline vanadium oxide hydrate V3O7·H2O from hydroquinone and V2O5

Cited by 42 publications

References 62 publications

Modification of Graphene Oxide/V₂O₅·nH₂O Nanocomposite Films via Direct Laser Irradiation

Modification of Graphene Oxide/V₂O₅·nH₂O Nanocomposite Films via Direct Laser Irradiation

Vanadium Pentoxide with H₂O, K⁺, and Na⁺ Spacer between Layered Nanostructures for High‐Performance Symmetric Electrochemical Capacitors

Novel Polygonal Vanadium Oxide Nanoscrolls as Stable Cathode for Lithium Storage

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Hydrothermal synthesis of mesoporous rod-like nanocrystalline vanadium oxide hydrate V3O7·H2O from hydroquinone and V2O5

Cited by 42 publications

References 62 publications

Modification of Graphene Oxide/V2O5·nH2O Nanocomposite Films via Direct Laser Irradiation

Modification of Graphene Oxide/V2O5·nH2O Nanocomposite Films via Direct Laser Irradiation

Vanadium Pentoxide with H2O, K+, and Na+ Spacer between Layered Nanostructures for High‐Performance Symmetric Electrochemical Capacitors

Novel Polygonal Vanadium Oxide Nanoscrolls as Stable Cathode for Lithium Storage

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Modification of Graphene Oxide/V₂O₅·nH₂O Nanocomposite Films via Direct Laser Irradiation

Modification of Graphene Oxide/V₂O₅·nH₂O Nanocomposite Films via Direct Laser Irradiation

Vanadium Pentoxide with H₂O, K⁺, and Na⁺ Spacer between Layered Nanostructures for High‐Performance Symmetric Electrochemical Capacitors