Titanium-di-oxide (TiO2) concentration-dependent optical and morphological properties of PAni-TiO2 nanocomposite

Rahman, Kazi Hasibur; Kar, Asit Kumar

doi:10.1016/j.mssp.2019.104745

Cited by 29 publications

(10 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These bands are the characteristic peaks for protonated PANI, as is the presence of the benzenoid and quinoid rings, thus indicating that the PANI is in emeraldine-salt form [ 35 , 36 ]. Moreover, the intensity band at 1291 cm −1 and 1239 cm −1 arises due to the aromatic conjugated C–N stretching in the quinoid ring, whereas 1109 cm −1 is due to the electron-like band in the quinoid unit of doped PANI [ 34 , 37 ]. The C–H out-of-plane bending vibration in the polymer chain is assigned to the intensity band at 991 cm −1 .…”

Section: Resultsmentioning

confidence: 99%

“…The latter shows the bipolaron behaviour of the synthesised PANI [ 34 ]. Furthermore, the hump which was seen at up to 800 nm indicates the polaron and bipolaron transition, where it shows that there is a free charge transfer in the benzenoid ring [ 37 ]. Thus, this further proves that the PANI synthesised is in the form of emeraldine salt [ 39 ].…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Starch/Polyaniline Biopolymer Film as Potential Intelligent Food Packaging with Colourimetric Ammonia Sensor

2022

View full text Add to dashboard Cite

The use of petroleum-based plastics in food packaging leads to various environmental impacts, while spoilage of food and misinterpretation of food-date labelling account for food insecurity; therefore, a biopolymer capable of indicating food edibility is prepared to resolve these issues. In this research, starch/polyaniline (starch/PANI) biopolymer film was synthesised and investigated as an ammonia sensor for potential application as intelligent food packaging. FT-IR and XRD were used to confirm the composition of the biopolymer films, while UV-Vis spectrometry was applied to identify the oxidation state of PANI in emeraldine form. PANI was successfully incorporated into the starch matrix, leading to better thermal stability (TGA) but decreasing the crystallinity of the matrix (DSC). The performance of the polymer-film sensor was determined through ammonia-vapour sensitivity analysis. An obvious colour change from green to blue of starch/PANI films was observed upon exposure to the ammonia vapour. Starch/PANI 0.4% is the optimum composition, having the best sensor performance with good linearity (R2 = 0.9459) and precision (RSD = 8.72%), and exhibiting excellent LOD (245 ppm). Furthermore, the starch/PANI films are only selective to ammonia. Therefore, the starch/PANI films can be potentially applied as colourimetric ammonia sensors for intelligent food packaging.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Starch/Polyaniline Biopolymer Film as Potential Intelligent Food Packaging with Colourimetric Ammonia Sensor

2022

View full text Add to dashboard Cite

show abstract

“…The most tremendous properties are its low band gap energy (3.2 eV), low electrical conductivity (2:24 Â 10 À10 s/m) [138], and relatively high electron-hole recombination rate than the bulk materials. Due to this extraordinary behavior, zinc oxide (ZnO) semiconductor is suitable for emissive layer materials used in OLEDs [139][140][141]. By placing nano-TiO 2 particles in a conjugated polymer such as polymethyl methacrylate (PMMA) matrix, we get novel composite materials containing both metal oxide and polymeric properties.…”

Section: Pmma/metal Sulfide Nanocomposite Used As An Emissive Layer Materialsmentioning

confidence: 99%

Recent advances in efficient emissive materials-based OLED applications: a review

2021

View full text Add to dashboard Cite

In the present time, organic light-emitting diode (OLED) is a very promising participant over light-emitting diodes (LEDs), liquid crystal display (LCD), and also another solid-state lighting device due to its low cost, ease of fabrication, brightness, speed, wide viewing angle, low power consumption, and high contrast ratio. The most prominent layer of OLED is the emissive layer because the device emission color, contrast ratio, and external efficiency depend of this layer's materials. This review ruminates on the basics of OLEDs, different light emission mechanisms, OLEDs achievements, and different types of challenges revealed in the field of OLEDs. This review's primary intention is to broadly discuss the synthesizing methods, physicochemical properties of conducting polymer polymethyl methacrylate (PMMA), and its polymeric nanocompositebased emissive layer materials for OLEDs application. It also discusses the most extensively used OLED fabrication techniques. PMMA-based polymeric nanocomposites revealed good transparency properties, good thermal stability, and high electrical conductivity, making suitable materials as an emissive layer for OLED applications.

show abstract

“…Additionally, the enhancement in the physicochemical interaction between the TiO 2 nanopowders and PAni is responsible for these morphological phenomena. Finally, it can be said that an increase in the ratio of TiO 2 NPs in composites resulted in a rise in: o The PAni matrix's adsorptive qualities o The capacity to regulate the nanocomposite's structure o The area of nanoflakes' surfaces The effectiveness of the electrical properties and photocatalytic activity are improved by these nanoflakes [42].…”

Section: Morphological Studymentioning

confidence: 99%

Titanium Dioxide (TiO₂) Concentration-dependent Photovoltaic Cells Performance of PAni-TiO₂ Nanocomposite

Shahat

Ghitas²

2022

IOP Conf. Ser.: Mater. Sci. Eng.

View full text Add to dashboard Cite

By optimizing the features of the photoactivated polyaniline-titanium dioxide (PAni-TiO2) nanocomposite layer, varied concentrations of TiO2 nanoparticles (NPs) inside PAni matrix were used to improve the performance of organic cells. In this work, polymer solar cells were designed using the FTO/(PAni- TiO2)/Ag combination. PAni-TiO2 films’ structural evolution, surface properties, optical and electrical characteristics have been studied. The XRD patterns showed that the crystallite size gradually decreases from 18.7 to 12.8 nm depending on the TiO2 NPs concentration in the PAni matrix. In addition, the surface of the highly concentrated films was rougher and more porous than it was for the pristine film. With varying concentrations of TiO2 NPs incorporated into the PAni structure, PAni- TiO2 based composite cells’ efficiency enhanced from 0.33 to 0.85%. This conclusion is mostly related to a structural shift accompanied by a high increase in roughness scales, that led to a reduction of reflected photons and, as a consequence, an increase in the creation of free carriers.

show abstract

Titanium-di-oxide (TiO2) concentration-dependent optical and morphological properties of PAni-TiO2 nanocomposite

Cited by 29 publications

References 50 publications

Starch/Polyaniline Biopolymer Film as Potential Intelligent Food Packaging with Colourimetric Ammonia Sensor

Starch/Polyaniline Biopolymer Film as Potential Intelligent Food Packaging with Colourimetric Ammonia Sensor

Recent advances in efficient emissive materials-based OLED applications: a review

Titanium Dioxide (TiO₂) Concentration-dependent Photovoltaic Cells Performance of PAni-TiO₂ Nanocomposite

Contact Info

Product

Resources

About

Titanium-di-oxide (TiO2) concentration-dependent optical and morphological properties of PAni-TiO2 nanocomposite

Cited by 29 publications

References 50 publications

Starch/Polyaniline Biopolymer Film as Potential Intelligent Food Packaging with Colourimetric Ammonia Sensor

Starch/Polyaniline Biopolymer Film as Potential Intelligent Food Packaging with Colourimetric Ammonia Sensor

Recent advances in efficient emissive materials-based OLED applications: a review

Titanium Dioxide (TiO2) Concentration-dependent Photovoltaic Cells Performance of PAni-TiO2 Nanocomposite

Contact Info

Product

Resources

About

Titanium Dioxide (TiO₂) Concentration-dependent Photovoltaic Cells Performance of PAni-TiO₂ Nanocomposite