Highly selective gas sensors from photo-activated ZnO/PANI thin films synthesized by mSILAR

Thomas, Deepu; Thomas, Ajith; Tom, Anju Elsa; Sadasivuni, Kishor Kumar; Ponnamma, Deepalekshmi; Goutham, Solleti; Cabibihan, John-John; Rao, K. Venkateswara

doi:10.1016/j.synthmet.2017.08.006

Cited by 52 publications

(9 citation statements)

References 47 publications

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“…This leads to the formation of superoxide and hydroxyl radicals. [ 11,12 ] In this work, we report optical band gap of pure polypyrrole and polypyrrole doped with zinc oxide (ZnO) nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Complex Optical Studies on Conducting Polypyrrole Doped with ZnO Nanoparticles

Basavaraj

Metri

Shweta³

et al. 2020

Macromolecular Symposia

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The conducting polymer polypyrrole and polypyrrole/ZnO nanocomposites are synthesized by in situ polymerization method at 0°C–5°C temperature with ammonium persulphate as an oxidizing agent. The optical band gap of polypyrrole/ZnO nanocomposites have been studied at different weight percentage such as 10%, 30%, and 50%, at room temperature. The obtained absorption spectra in the wavelength range 200–800 nm by T90+ UV/Vis Spectrophotometer. The PXRD pattern confirmed the hexagonal wurtzite structure of the ZnO product. The particle size is calculated by using the Debye–Scherrer relation and it is found to be in the range of 20–50 nm. The absorption spectra at 385 nm obtained is the characteristic peak of ZnO and it is observed for all weight percentages of nanocomposites. Further, the peaks that occurred at 300and 469 nm (3.71 eV) confirm the formation of polypyrrole in nanocomposites. The optical properties of such conducting polymer nanocomposites are used in the field of optoelectronic devices and its wide band gap is useful in biomedical applications.

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Section: Introductionmentioning

confidence: 99%

Complex Optical Studies on Conducting Polypyrrole Doped with ZnO Nanoparticles

Basavaraj

Metri

Shweta³

et al. 2020

Macromolecular Symposia

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“…Many methods, such as sol-gel, thermal decomposition, pulsed laser deposition, as well as hydrothermal and chemical reduction, are employed for the synthesis of metal oxide nanoparticles. Among these methods, the microwave-assisted sol-gel method is reported to be a simple and low-cost process compared to conventional heating methods [24][25][26][27][28][29][30], since the microwave penetration depth is high and uniform throughout the material [31,32]. We have adopted this simple way of nanoparticle synthesis in the current study to synthesize Ce-doped ZnO nanomaterials.…”

Section: Introductionmentioning

confidence: 99%

Effect of cerium doping on the optical and photocatalytic properties of ZnO nanoflowers

2019

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Photocatalytic performances of the synthesized cerium doped (Ce-doped) ZnO nanoflowers are reported in this work. A microwave-assisted sol-gel method is adopted for the synthesis of the nanomaterial and its structural and morphological features are characterized. While doping, the Ce 3+ ions occupy the sites of Zn 2+ ions in the hexagonal ZnO lattice, which is investigated by means of X-ray diffraction studies and energy dispersive X-ray analysis. At higher Ce 3+ concentrations, ultraviolet (UV) light absorption is quite high as evidenced by the UV-Vis absorption spectra. The photoluminescence study demonstrates higher oxygen vacancy and zinc interstitials for the Ce-doped ZnO compared to the undoped ZnO. Ce-doping improves the electrical properties of the sample as well. Finally, it is established that the Ce-doped ZnO nanoflower is highly efficient in UV degrading the methylene blue organic dye.

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“…Clean substrates are immersed for 10 s following immersion in high temperature of the water using proportional variety, and the strategy is repeated. These methods are tempered using an air annealing chamber at 450 °C [ 88 , 89 ].…”

Section: Synthesis Of Thin Films Of Pani With Different Methodsmentioning

confidence: 99%

Preparations, Properties, and Applications of Polyaniline and Polyaniline Thin Films—A Review

et al. 2021

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Polyaniline (PANI) is a famous conductive polymer, and it has received tremendous consideration from researchers in the field of nanotechnology for the improvement of sensors, optoelectronic devices, and photonic devices. PANI is doped easily by different acids and dopants because of its easy synthesis and remarkable environmental stability. This review focuses on different preparation processes of PANI thin film by chemical and physical methods. Several features of PANI thin films, such as their magnetic, redox, and antioxidant, anti-corrosion, and electrical and sensing properties, are discussed in this review. PANI is a highly conductive polymer. Given its unique properties, easy synthesis, low cost, and high environmental stability in various applications such as electronics, drugs, and anti-corrosion materials, it has attracted extensive attention. The most important PANI applications are briefly reviewed at the end of this review.

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Highly selective gas sensors from photo-activated ZnO/PANI thin films synthesized by mSILAR

Cited by 52 publications

References 47 publications

Complex Optical Studies on Conducting Polypyrrole Doped with ZnO Nanoparticles

Complex Optical Studies on Conducting Polypyrrole Doped with ZnO Nanoparticles

Effect of cerium doping on the optical and photocatalytic properties of ZnO nanoflowers

Preparations, Properties, and Applications of Polyaniline and Polyaniline Thin Films—A Review

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