Tunable Growth of Indium Oxide from Nanoflute to Metal-Filled Nanotubes

Kumar, Mukesh; Singh, V. N.; Mehta, B. R.; Singh, J. P.

doi:10.1021/jp211658a

Cited by 13 publications

(11 citation statements)

References 39 publications

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“…Kumar et al have demonstrated the growth of IO nanoflute in the presence of ethanol and low growth pressure [50]. The presence of nano size cavity was clearly seen in the Fig.…”

Section: Effect Of Growth Pressure: Nanoflute To Nanotubementioning

confidence: 77%

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Metal Oxide Nanostructures: Growth and Applications

Kumar

2016

Advances in Nanomaterials

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This chapter provides a comprehensive review of metal oxide nanostructures, their growth and applications. These metal oxides are important transparent conducting materials that have drawn great attention in the scientific community owing to their high optical transparency (*85-95 %) in the visible region of spectrum along with high electrical conductivity (10 3 -10 4 Ω −1 cm −1 ). The combination of these properties make these materials suitable for many technological applications in solar cells, heat mirrors, transparent conducting electrodes, display devices and light emitting diodes. The metal oxide nanostructures, particularly nanowires and nanotubes, have also drawn considerable research interest as sensor material because of their high surface-to-volume ratio and suitable surface chemistry for verities of sensor applications. This has opened up potential applications of these materials in the area of environment control devices with high sensing response, low detection limit, low power consumption and high compatibility with microelectronic processing for IC's. Thus, 1-D metal oxide nanostructures have proven to be the most promising interface for communicating with the outer world. Different growth techniques and various growth models have been discussed for the growth of nanowires, metal-filled nanotubes, octahedrons and nanoflute structures. The article concludes with a glimpse of some recent work based on metal oxide photodetector especially in deep ultraviolet region (DUV) (<280 nm) which would provide futuristic application in optical switching, single photon detection and communication.

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“…Kumar et al have demonstrated the growth of IO nanoflute in the presence of ethanol and low growth pressure [50]. The presence of nano size cavity was clearly seen in the Fig.…”

Section: Effect Of Growth Pressure: Nanoflute To Nanotubementioning

confidence: 77%

“…5.8a. HRTEM of a single IO nanowire clearly revealed the presence [50] of light contrast regions along the length of the nanowire. The size of nanocavity was found in range of 10-30 nm.…”

Section: Effect Of Growth Pressure: Nanoflute To Nanotubementioning

confidence: 99%

Metal Oxide Nanostructures: Growth and Applications

Kumar

2016

Advances in Nanomaterials

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“…However, to the best of our knowledge SAM of short chain for example TGA (COOHCH 2 SH) on Au and VOx having nanoflute morphology is not known in literature. Nanoflute structure of only IrO 2 was reported by Kumar et al . having uniform voids in the range of ∼12 nm.…”

Section: Resultsmentioning

confidence: 99%

Self‐Assembled Monolayer Stabilized Gold‐Vanadate Nanoflute for Water Splitting Reactions

et al. 2019

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Vanadium oxide (VOx) decorated with gold‐nanoparticles via self‐assembled monolayer approach is herein reported to be an efficient electrocatalyst for both oxygen and hydrogen evolution reactions (OER and HER) in alkali medium. The voids created in the nanoflute of gold‐vanadate were believed to be responsible for high mass transfer allowing the material to be highly applicable as a catalyst for water splitting and nitro‐arene reduction. The nanoflute exhibited high current density with low onset potential value in both OER and HER. The overpotential value at 10 mAcm−2 was observed to be 310 mV with onset potential of 1.43 V in case of OER while the overpotential value for HER was measured to be 282 mV. The nanocatalyst was found to be stable upto 10 h with minimal increment in the overpotential value. The Tafel plot value of 127 mVdec−1 in OER and 131 mVdec−1 in HER also signified for the high efficacy of the catalyst towards splitting of water molecules under high basic condition. The same material was also used as catalyst for reduction of various nitro‐arenes in isopropanol with 0.25 M KOH. The liberation of hydrogen via the oxidation of isopropanol was supposed to be responsible for reduction of nitro‐arenes. The ability of the catalyst to oxidize isopropanol was substantiated from electrochemical studies.

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“…As is well known, indium (In) also has a low melting point ~ 156.6 °C and belongs to the same family as gallium in the periodic table [151], which may be filled in nanotubes used for nanothermometers. Since the In-filled CNTs were first successfully synthesized in 2002 via chemical vapor deposition [170], so far, In has been filled inside various inorganic nanotubes forming nanowire core/shell heterostructures, including In@Si [172], In@In 2 O 3 [134,173], In@GaN [110], etc. Importantly, this metallic In has a large expansion coefficient of 0.116×10 -3 K -1 , which is promising for developing high sensitive nanothermometer.…”

Section: In@nanotubesmentioning

confidence: 99%