Revisiting Tungsten Trioxide Hydrates (TTHs) Synthesis - Is There Anything New?

Kuti, Lisa M.; Bhella, Surinderjit Singh; Thangadurai, Venkataraman

doi:10.1021/ic900738m

Cited by 32 publications

(25 citation statements)

References 49 publications

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“…The importance of WO 3 · n H 2 O stems from the fact that generally in liquid‐phase synthesis routes, WO 3 hydrates are first produced and subsequently annealed to obtain the desired crystal phase of WO x . The reports on these hydrates can be traced back to almost a century ago,18, 19 with the four most studied classes presented as WO 3 ·2 H 2 O (dihydrate), WO 3 ·H 2 O (monohydrate), WO 3 ·0.5 H 2 O (hemihydrate), and WO 3 ·0.33 H 2 O. The crystal structures of WO 3 hydrates are highly dependent on their water content 19.…”

Section: Fundamental Propertiesmentioning

confidence: 99%

“…The reports on these hydrates can be traced back to almost a century ago,18, 19 with the four most studied classes presented as WO 3 ·2 H 2 O (dihydrate), WO 3 ·H 2 O (monohydrate), WO 3 ·0.5 H 2 O (hemihydrate), and WO 3 ·0.33 H 2 O. The crystal structures of WO 3 hydrates are highly dependent on their water content 19. WO 3 ·2 H 2 O possesses a layered structure, which is composed of WO 5 (OH) 2 single sheets in corner‐sharing mode.…”

Section: Fundamental Propertiesmentioning

confidence: 99%

“…WO 3 ·H 2 O consists of highly distorted corner‐sharing WO 5 (OH) 2 units, which are coordinated by five oxygen atoms and one water molecule. As for WO 3 ·0.5 H 2 O, its existence is less documented but the crystal structure is believed to be of a cubic pyrochlore‐type, where the water molecules are present in a tunnel constructed by the six‐membered WO 6 corner‐sharing octahedra 19. Finally, WO 3 ·0.33 H 2 O was found by Gerand et al in 1981 20.…”

Section: Fundamental Propertiesmentioning

confidence: 99%

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Nanostructured Tungsten Oxide – Properties, Synthesis, and Applications

Zheng

Strano

et al. 2011

Adv Funct Materials

1,297

911

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This section focuses on the fundamental properties of nanostructured WO x and start with its various crystal structures and the conditions for phase transitions between these structures. The structures of nonstoichiometric WO x and WO 3 hydrates Nanostructured Tungsten Oxide -Properties, Synthesis, and Applications Metal oxides are the key ingredients for the development of many advanced functional materials and smart devices. Nanostructuring has emerged as one of the best tools to unlock their full potential. Tungsten oxides (WO x ) are unique materials that have been rigorously studied for their chromism, photocatalysis, and sensing capabilities. However, they exhibit further important properties and functionalities that have received relatively little attention in the past. This Feature Article presents a general review of nanostructured WO x , their properties, methods of synthesis, and a description of how they can be used in unique ways for different applications.

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Section: Fundamental Propertiesmentioning

confidence: 99%

Section: Fundamental Propertiesmentioning

confidence: 99%

Section: Fundamental Propertiesmentioning

confidence: 99%

See 1 more Smart Citation

Nanostructured Tungsten Oxide – Properties, Synthesis, and Applications

Zheng

Strano

et al. 2011

Adv Funct Materials

1,297

911

View full text Add to dashboard Cite

show abstract

“…It has been reported that the orthorhombic-WO 3 $0.33H 2 O crystal structure consists of layered stacks of WO 5 (OH 2 ) octahedra and interlayer water molecules. [44][45][46] For orthorhombic-WO 3 $0.33H 2 O, the interlayer water molecules connected the WO 5 (OH 2 ) octahedra planes through hydrogen bonds. The FTIR spectrum of sample W-0.0Ag shows vibrational bands located at 3494 and 3470 cm À1 (region-4) which are usually attributed to -OH and H 2 O stretching vibrations, while an additional sharp band due to structural water molecules View Article Online appears at 1606 cm À1 (region-3) (Fig.…”

Section: Resultsmentioning

confidence: 99%

One-step controllable synthesis of three-dimensional WO₃ hierarchical architectures with different morphologies decorated with silver nanoparticles: enhancing the photocatalytic activity

et al. 2020

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“…Each tungsten in the structure is surrounded by one double‐bonded terminal oxygen O t along the direction normal to the plane, four single‐bonded bridging oxygen O b in the plane, and one coordinated water molecule via secondary bonding at the opposite position to WO short bond . WO 3 ·1.3H 2 O and WO 3 ·H 2 O were also claimed to be layered structured . WO 3 ·H 2 O is formed by the topotactic loss of the interlayer water molecules on dehydration of the dihydrate.…”

Section: Approaches To 2d Intercalation Chemistrymentioning

confidence: 99%

Functionalizing New Intercalation Chemistry for Sub‐Nanometer‐Scaled Interlayer Engineering of 2D Transition Metal Oxides and Chalcogenides

Hai

Zhuiykov

2018

Adv Materials Inter

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in terms of intercalation chemistry dominated primarily by the ion exchange and insertion of the neutral molecules. In addition, intercalation phenomena have also been observed in the biological systems, for instance, between DNA and small molecules. [7] The intercalation chemistry in these bulk and microstructural layered materials above greatly advanced the science and technology toward its implementation in the applications of heterogeneous catalysis, [8] ion exchange, [9] and energy conversion and storage. [10] More recently, as the rise of 2D nanomaterials, it has regained even greater attractions owing to its adoption as a new methodology to exfoliate microstructured layered materials into atomically thin nanoflakes. [11][12][13][14][15][16] 2D nanomaterials have attracted explosive attentions since A. Geim and K. Novoselov were rewarded the 2010 Nobel Prize in physics for their work on graphene. [17][18][19] Unlike their bulk and even microstructured counterparts, 2D nanomaterials possess various unique chemical and physical properties. [20,21] The few-layered nanoflakes of such 2D nanomaterials as transition metal oxides (TMOs) and chalcogenides (TMCs) with the atomic-scale thickness endow them with exotic optical, electrical, magnetic, and thermal properties, making them unique and promising candidates to various fields including optoelectronics, [22] sensing, [23] and energy storage, [24] and addressing the urgent demand for compact, smart, flexible, renewable, and wearable high-performance devices and systems. [25][26][27][28] Notwithstanding tremendous effort focusing on the discovery of new 2D nanomaterials and their novel properties and the development of large-scale synthesis methodologies, intercalation behaviors in the 2D nanomaterials have received much less attention so far. Intercalation phenomena exist abundantly in the applications of 2D nanomaterials for energy conversion and storage such as electrochromic devices, [29] supercapacitors, [30] and batteries, [31] and should be reinvestigated at sub-nanometer scale based on the same reasons as we reconsidered layered nanomaterials with atomic-scale thickness. In this progress report, we summarized the new knowledge toward the intercalation chemistry of 2D nanomaterials related to oxides and chalcogenides of molybdenum and tungsten and their applications mainly focusing on electrochromic Intercalation in bulk layered materials has been investigated intensively in the last 60 years. However, the rise of 2D few-layered nanomaterials such as transition metal oxides and chalcogenides opened up thrilling opportunities for the new era of intercalation as it is almost guaranteed that new phenomena will be observed with the intercalation of ions and molecules into few-layered nanomaterials due to the quantum confinement effect at the 2D scale. In this progress report, the advances of the 2D intercalation chemistry in the few-layered oxides and chalcogenides of molybdenum and tungsten are highlighted with respect to its concept, structure, implementatio...

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Revisiting Tungsten Trioxide Hydrates (TTHs) Synthesis - Is There Anything New?

Cited by 32 publications

References 49 publications

Nanostructured Tungsten Oxide – Properties, Synthesis, and Applications

Nanostructured Tungsten Oxide – Properties, Synthesis, and Applications

One-step controllable synthesis of three-dimensional WO₃ hierarchical architectures with different morphologies decorated with silver nanoparticles: enhancing the photocatalytic activity

Functionalizing New Intercalation Chemistry for Sub‐Nanometer‐Scaled Interlayer Engineering of 2D Transition Metal Oxides and Chalcogenides

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Revisiting Tungsten Trioxide Hydrates (TTHs) Synthesis - Is There Anything New?

Cited by 32 publications

References 49 publications

Nanostructured Tungsten Oxide – Properties, Synthesis, and Applications

Nanostructured Tungsten Oxide – Properties, Synthesis, and Applications

One-step controllable synthesis of three-dimensional WO3 hierarchical architectures with different morphologies decorated with silver nanoparticles: enhancing the photocatalytic activity

Functionalizing New Intercalation Chemistry for Sub‐Nanometer‐Scaled Interlayer Engineering of 2D Transition Metal Oxides and Chalcogenides

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One-step controllable synthesis of three-dimensional WO₃ hierarchical architectures with different morphologies decorated with silver nanoparticles: enhancing the photocatalytic activity