Light-Enhanced Vanadium Pentoxide (V2O5) Thin Films for Gas Sensor Applications

Abbas, Talib R.

doi:10.1007/s11664-018-6673-z

Cited by 17 publications

(3 citation statements)

References 35 publications

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“…Such materials are not yet known very much, but the number of works in this area is rapidly increasing. Among the recent works, we can distinguish the studies of the visible light activated gas sensitivity of V 2 O 5 [ 117 , 118 ] ( E g = 2.2–2.4 eV) and p -type semiconductor oxides, such as HoFeO 3 [ 119 ] and NiO [ 120 ]. Another way is to sensitize wide-gap semiconductor oxides to the visible radiation.…”

Section: Activation Of Gas Sensitivity Of Semiconductor Metal Oxides Under Visible Lightmentioning

confidence: 99%

Light Activation of Nanocrystalline Metal Oxides for Gas Sensing: Principles, Achievements, Challenges

2021

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The review deals with issues related to the principle of operation of resistive semiconductor gas sensors and the use of light activation instead of thermal heating when detecting gases. Information on the photoelectric and optical properties of nanocrystalline oxides SnO2, ZnO, In2O3, and WO3, which are the most widely used sensitive materials for semiconductor gas sensors, is presented. The activation of the gas sensitivity of semiconductor materials by both UV and visible light is considered. When activated by UV light, the typical approaches for creating materials are (i) the use of individual metal oxides, (ii) chemical modification with nanoparticles of noble metals and their oxides, (iii) and the creation of nanocomposite materials based on metal oxides. In the case of visible light activation, the approaches used to enhance the photo- and gas sensitivity of wide-gap metal oxides are (i) doping; (ii) spectral sensitization using dyes, narrow-gap semiconductor particles, and quantum dots; and (iii) addition of plasmon nanoparticles. Next, approaches to the description of the mechanism of the sensor response of semiconductor sensors under the action of light are considered.

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Section: Activation Of Gas Sensitivity Of Semiconductor Metal Oxides Under Visible Lightmentioning

confidence: 99%

Light Activation of Nanocrystalline Metal Oxides for Gas Sensing: Principles, Achievements, Challenges

2021

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“…Consequently, V 2 O 5 is found in several studies being a sensing material for several gas, such as, ammonia, ethanol, pH-sensor, EGFET pH-sensor, phenylhydrazine, NO 2 , H 2 O 2 and among others. In all cases, V 2 O 5 demonstrated to be highly sensitivity in several temperature and under both dark and illumination conditions [18,[39][40][41][42][43][44][45][46][47]. Similar to the sensor, a biossensor turn an analytical response into a measurable chemical signal and detects only a certain biological product as a target analyte.…”

Section: Properties and Applicationsmentioning

confidence: 99%

Vanadium Pentoxide (V₂O₅): Their Obtaining Methods and Wide Applications

Cestarolli¹,

Guerra²

2021

Transition Metal Compounds - Synthesis, Properties, and Application

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The first synthesis of pentoxide vanadium (V2O5) as gel completed 135 years in 2020. Since its first synthesis, the V2O5 has attracted attention over the years in different areas in science and technology. There are several possibilities to obtain V2O5 resulting in different structures. Among these methods, it is possible to mention the sol–gel, hydrothermal/solvothermal synthesis, electrospinning, chemical vapor deposition (CVD), physical vapor deposition (PVD), template-based methods, reverse micelle techniques, Pechini method and electrochemical deposition that can be considered as the great asset for its varied structures and properties. Progress towards obtaining of different structures of V2O5, and phases have been resulted in lamellar structure with wide interlayer spacing, good chemical and thermal stability and thermoelectric and electrochromic properties. Throughout this advancement, its performance for industrial applications have made a strong candidate in electrochromic devices, photovoltaic cell, reversible cathode materials for Li batteries, supercapacitor, among others. This chapter will be to assist an updated review since the first synthesis up to current development.

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“…On the other hand, through oxidation at 500 °C and by varying the vanadium thickness, it is possible to control the formation of V 2 O 5 nanofibers or CNT/V 2 O 5 composites. The development of multi-purpose supported CNT/V 2 O 5 nanostructures can help in the design of new battery electrodes [ 35 ], solid-state supercapacitors [ 36 ], and optoelectronic sensors [ 37 ].…”

Section: Introductionmentioning

confidence: 99%

The Synthesis of Sponge-like V2O5/CNT Hybrid Nanostructures Using Vertically Aligned CNTs as Templates

Picuntureo,

García-Merino,

Villarroel

et al. 2024

Nanomaterials

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The fabrication of sponge-like vanadium pentoxide (V2O5) nanostructures using vertically aligned carbon nanotubes (VACNTs) as a template is presented. The VACNTs were grown on silicon substrates by chemical vapor deposition using the Fe/Al bilayer catalyst approach. The V2O5 nanostructures were obtained from the thermal oxidation of metallic vanadium deposited on the VACNTs. Different oxidation temperatures and vanadium thicknesses were used to study the influence of these parameters on the stability of the carbon template and the formation of the V2O5 nanostructures. The morphology of the samples was analyzed by scanning electron microscopy, and the structural characterization was performed by Raman, energy-dispersive X-ray, and X-ray photoelectron spectroscopies. Due to the catalytic properties of V2O5 in the decomposition of carbonaceous materials, it was possible to obtain supported sponge-like structures based on V2O5/CNT composites, in which the CNTs exhibit an increase in their graphitization. The VACNTs can be removed or preserved by modulating the thermal oxidation process and the vanadium thickness.

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Light-Enhanced Vanadium Pentoxide (V2O5) Thin Films for Gas Sensor Applications

Cited by 17 publications

References 35 publications

Light Activation of Nanocrystalline Metal Oxides for Gas Sensing: Principles, Achievements, Challenges

Light Activation of Nanocrystalline Metal Oxides for Gas Sensing: Principles, Achievements, Challenges

Vanadium Pentoxide (V₂O₅): Their Obtaining Methods and Wide Applications

The Synthesis of Sponge-like V2O5/CNT Hybrid Nanostructures Using Vertically Aligned CNTs as Templates

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Light-Enhanced Vanadium Pentoxide (V2O5) Thin Films for Gas Sensor Applications

Cited by 17 publications

References 35 publications

Light Activation of Nanocrystalline Metal Oxides for Gas Sensing: Principles, Achievements, Challenges

Light Activation of Nanocrystalline Metal Oxides for Gas Sensing: Principles, Achievements, Challenges

Vanadium Pentoxide (V2O5): Their Obtaining Methods and Wide Applications

The Synthesis of Sponge-like V2O5/CNT Hybrid Nanostructures Using Vertically Aligned CNTs as Templates

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Product

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Vanadium Pentoxide (V₂O₅): Their Obtaining Methods and Wide Applications