UV random laser emission from flexible ZnO-Ag-enriched electrospun cellulose acetate fiber matrix

Silva-Neto, Manoel L. da; Oliveira, Mário César Albuquerque de; Dominguez, C. Tolentino; Lins, Raquel E. M.; Rakov, Nikifor; Araújo, Cid B. de; Menezes, Leonardo de S.; Oliveira, Helinando Pequeno de; Gomes, Anderson S. L.

doi:10.1038/s41598-019-48056-w

Cited by 102 publications

(35 citation statements)

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“…Signals at 803 and 1055 cm −1 are due to the C=O, C-C, and Zn-OH stretching modes [60][61][62][63]. However, ZnOA showed a noticeable decrease in transmittance at 1055 cm −1 in comparison with ZnON, which could be attributed to the stretching vibration of the residual C-O group present in the salt precursor [64], whereas the peaks around 1023 cm −1 depict the stretching vibration of the C-CH3 bond, associated with the ZnOA precursor [65][66][67]. (2 0 3)…”

Section: Ft-ir Resultsmentioning

confidence: 99%

Effect of the Precursor on the Synthesis of ZnO and Its Photocatalytic Activity

et al. 2022

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Zinc nitrate (ZnON) and zinc acetate (ZnOA) were used as precursors for the synthesis of zinc oxide (ZnO) nanoparticles by the sol–gel method. The ZnO powder was characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV–vis diffuse reflectance spectroscopy, X-ray diffraction (UV–Vis DRS), Fourier transform infrared spectroscopy (FTIR), physisorption of nitrogen, and X-ray photoelectron spectroscopy (XPS). On the other hand, the photocatalytic activity of the samples was tested in the degradation of 2,4-Dichlorophenoxyacetic acid (2,4-D) and 2,4-Dichlorophenol (2,4-DCP) under UV-light irradiation. The ZnON and ZnOA showed polycrystalline irregular structures and rod-like morphology with mean sizes of 40 and 99 nm, respectively. The precursor type influenced the bandgap, crystallite size, surface area, total pore volume, and pore diameter. The XPS results showed high contents of C and N in the ZnO samples, and as a consequence, the solids present remarkable differences in the C/N, O/C, and O/Zn atomic ratios, which significantly influenced the physicochemical characteristics. The ZnON and ZnOA exhibit photocatalytic properties against 2,4-D (74.7 and 90.9%, respectively) and 2,4-DCP (78.4 and 86.7%, respectively) and better performance of ZnOA. These results are promising and indicate the potential to use this material as a photocatalyst to degrade organic pesticides.

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Section: Ft-ir Resultsmentioning

confidence: 99%

Effect of the Precursor on the Synthesis of ZnO and Its Photocatalytic Activity

et al. 2022

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“…combining metal nanorods and new optical excitation schemes (see for example: Wang et al, 2016 and2017;Yadav et al, 2017;da Silva-Neto et al, 2019). By focusing on more fundamental aspects, we recall the large literature on multidimensional solitons and their formal analogies with ultracold bosonic gases, liquid crystals and magnetic media (Kartashov et al, 2019).…”

Section: Discussionmentioning

confidence: 99%

Controlling light with light in silver-nanospheres and gold-nanorods colloids

Araújo¹,

Reyna²,

Oliveira³

2019

Self Cite

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A review is presented on recent research that demonstrate the control of light-by-light in colloids containing silver-nanospheres (Ag-NS) and gold-nanorods (Au-NR). The presentation is based on experiments performed with pulsed lasers by exploiting the ultrafast electronic nonlinearity of samples exhibiting cubic-quintic nonlinearities. Guiding and confinement of light induced by optical vortex solitons in colloidal suspensions of Ag-NS, and nonlinear processes of light scattering, absorption and refraction in colloids with Au-NR were investigated in the experiments. The results are analyzed by numerical simulations based on modified nonlinear Schrödinger equations. The developments herein discussed are in the forefront of interest for plasmonic applications with metal nanoparticles.

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Section: Paper-based Transistorsmentioning

confidence: 99%

“…[3] Instead of using cellulose fiber complex as a substrate, photonic structures using cellulose-based materials have also been widely investigated, ranging from photonic crystals [4] to random lasers. [5] Electronics based on paper or nanocellulose are also intriguing, as these materials possess well-proven dielectric properties for their use in field-effect transistors (FET) and resistive memory devices. [6] These materials are also used for flexible and transparent electronics, as the transparency of cellulose nanopaper can be engineered.…”

Section: Introductionmentioning

confidence: 99%

Silk and Paper: Progress and Prospects in Green Photonics and Electronics

Lee

Kim

Cho

2020

Advanced Sustainable Systems

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side effects such as air pollution, climate change, declines in natural resources, and technological inequality. The new responsibility of scientists and engineers is to develop a new sustainable technology that is sustainable and that does not further deplete the planet's natural resources. Specifically, silicon-based electronics and optoelectronic devices have short lifespans. For example, the average lifespans for mobile phones and laptops are less than four years on average, [1] and some sensing devices have even shorter lifespans, generating waste after a short time period. Therefore, environmental issues, such as the depletion of scarce resources and production of toxic byproducts, became an area of increased concern. Technological advances in photonics and electronics, in particular, are now facing the issue of depletion of oil, the foremost source of organic materials. The generation of chemical and inorganic wastes during the process of photonic and electronic device production is also a pressing problem. In addition, costly devices may increase the inequality gap between developed and developing countries, which is a pressing problem, particularly in the area of medical applications. Therefore, it is an essential task for researchers to investigate potential material candidates that are readily degradable without any harmful byproducts, and that are also abundant in nature, thus reducing their cost. Many materials of biological origin have been investigated with the goal of achieving sustainable technology so far. In this review, we summarize recent technological achievements based on the most widely investigated materials: silk and paper. Silk, which was initially deployed mainly for the clothing industry, is a natural eco-friendly material with unique properties. Due to its exceptional characteristics of being fully biodegradable and eliciting no immune response, silk has now become one of the most promising materials for biomedical applications such as biomedical implantable devices. Together with excellent optical transparency in the visible range of light, the exceptional biocompatibility of silk has inspired many outstanding developments of optical devices for biomedical sensing applications. Silk has also attracted attention for its use in electronic devices. It has been shown that silk is particularly beneficial for organic thin-film transistors (OTFTs) applications as it can improve the crystal quality of organic semiconductors. There has also been much interesting research done on silk-based transient electronic devices and carbonized silk-based electrical sensors. [2] Meanwhile, paper, one of the oldest and most familiar bio-based materials in human history, has also shown its advantages of outstanding optical and mechanical properties with the promise Photonic and electronic devices currently face challenges in terms of improved efficiency of energy harvesting and light emission, renewable energy and materials, and the development of eco-friendly materials. Owing to the emergence of worldwid...

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UV random laser emission from flexible ZnO-Ag-enriched electrospun cellulose acetate fiber matrix

Cited by 102 publications

References 50 publications

Effect of the Precursor on the Synthesis of ZnO and Its Photocatalytic Activity

Effect of the Precursor on the Synthesis of ZnO and Its Photocatalytic Activity

Controlling light with light in silver-nanospheres and gold-nanorods colloids

Silk and Paper: Progress and Prospects in Green Photonics and Electronics

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