TiO2–PANI nanocomposite thin film prepared by spin coating technique working as room temperature CO2 gas sensing

Sonker, Rakesh K.; Sabhajeet, S. R.; Yadav, B. C.

doi:10.1007/s10854-016-5310-y

Cited by 58 publications

(22 citation statements)

References 41 publications

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“…where h is Planck's constant, ν is the photon's frequency, A is a proportionality constant, E g is the band gap, α is the absorption coefficient and n is equal to 2 or 1/2 for indirect and direct transitions, respectively. The α of the samples is expressed as [23]:…”

Section: Resultsmentioning

confidence: 99%

Investigation of NiO film by sparking method under a magnetic field and NiO/ZnO heterojunction

Tippo

Thongsuwan

Wiranwetchayan

et al. 2020

Mater. Res. Express

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Nickel oxide (NiO) film receives attention from the field of optoelectronics due to its wide band gap and high transparency. By using a sparking method, the deposition of the NiO film is facile and unique. However, the NiO film made by the sparking method indicates a porous surface with an agglomeration of its particles. In order to reduce the porousness of the NiO film, the assistance of a permanent magnet in the sparking apparatus is presented. Here, we report the investigation of the NiO film and the p-NiO/n-ZnO heterojunction deposited by the sparking method under a magnetic field. Our results demonstrate that the porosity of the NiO film was reduced by increasing the magnitude of a magnetic field from 0 mT to 375 mT. Furthermore, the crystallinity and the electrical properties of the NiO film are improved by the influent of a magnetic field. For heterojunction, the best device shows the rectification ratio of 95 and the ideality factor of 4.92. This work provides an alternative method for the deposition of the NiO film with promising applications in optoelectronic devices.

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Section: Resultsmentioning

confidence: 99%

Investigation of NiO film by sparking method under a magnetic field and NiO/ZnO heterojunction

Tippo

Thongsuwan

Wiranwetchayan

et al. 2020

Mater. Res. Express

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“…A growth of 25% is expected for PFC emissions over the same period because of industry development and emission contractions in primary aluminum production. It is expected that SF6 emissions will enhance too (by almost 50%), owing to the increase in emissions from high and medium voltage switches as a result of the increase in electricity consumption and the development of magnesium production [6].…”

Section: Fluorinated Gases (Hfcs Pfcs and Sf6)mentioning

confidence: 99%

“…These gases are also by-products of the aluminum smelting process (like CF4, carbon tetrafluoride, PFC-14, which is the most abundant perfluorocarbon in the atmosphere). They can be found in old fire protection systems too [6]. PFCs can also be used as chemical tracer molecules to monitor the movement of supercritical CO2 for carbon capture and sequestration purposes.…”

Section: Introductionmentioning

confidence: 99%

Nanostructured Metal Oxide Semiconductors towards Greenhouse Gas Detection

Dadkhah

Tulliani

2022

Chemosensors

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Climate change and global warming are two huge current threats due to continuous anthropogenic emissions of greenhouse gases (GHGs) in the Earth’s atmosphere. Accurate measurements and reliable quantifications of GHG emissions in air are thus of primary importance to the study of climate change and for taking mitigation actions. Therefore, the detection of GHGs should be the first step when trying to reduce their concentration in the environment. Throughout recent decades, nanostructured metal oxide semiconductors have been found to be reliable and accurate for the detection of many different toxic gases in air. Thus, the aim of this article is to present a comprehensive review of the development of various metal oxide semiconductors, as well as to discuss their strong and weak points for GHG detection.

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“…Till now, a number of literatures proposed the sensing mechanism of polymer/TiO 2 nanoheterostructures. One of generally accepted factor is that the nanostructures of the heterostructures are beneficial to the high sensing properties, which mainly result from their large specific surface areas and much more active sites for the adsorption and interactions with the gases [ 163 , 164 , 165 ]. What is more, the formation of heterojunction at the interface between TiO 2 and polymers is usually regarded as a main factor for the ultrahigh sensitivity of the nanoheterostructures [ 83 ].…”

Section: Diverse Nanoheterostructural Gas Sensorsmentioning

confidence: 99%

TiO2-Based Nanoheterostructures for Promoting Gas Sensitivity Performance: Designs, Developments, and Prospects

Wang

Zhou

et al. 2017

Sensors

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Gas sensors based on titanium dioxide (TiO2) have attracted much public attention during the past decades due to their excellent potential for applications in environmental pollution remediation, transportation industries, personal safety, biology, and medicine. Numerous efforts have therefore been devoted to improving the sensing performance of TiO2. In those effects, the construct of nanoheterostructures is a promising tactic in gas sensing modification, which shows superior sensing performance to that of the single component-based sensors. In this review, we briefly summarize and highlight the development of TiO2-based heterostructure gas sensing materials with diverse models, including semiconductor/semiconductor nanoheterostructures, noble metal/semiconductor nanoheterostructures, carbon-group-materials/semiconductor nano- heterostructures, and organic/inorganic nanoheterostructures, which have been investigated for effective enhancement of gas sensing properties through the increase of sensitivity, selectivity, and stability, decrease of optimal work temperature and response/recovery time, and minimization of detectable levels.

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TiO2–PANI nanocomposite thin film prepared by spin coating technique working as room temperature CO2 gas sensing

Cited by 58 publications

References 41 publications

Investigation of NiO film by sparking method under a magnetic field and NiO/ZnO heterojunction

Investigation of NiO film by sparking method under a magnetic field and NiO/ZnO heterojunction

Nanostructured Metal Oxide Semiconductors towards Greenhouse Gas Detection

TiO2-Based Nanoheterostructures for Promoting Gas Sensitivity Performance: Designs, Developments, and Prospects

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