Cobalt doping induced shape transformation and its effect on luminescence in zinc oxide rod-like nanostructures

Gaur, Lalit Kumar; Gairola, Preeti; Gairola, S.P.; Mathpal, Mohan Chandra; Kumar, Promod; Kumar, Sachin; Kushavah, Dushyant; Agrahari, Vivek; Aragón, F.F.H.; Soler, Maria A. G.; Swart, H.C.

doi:10.1016/j.jallcom.2021.159189

Cited by 23 publications

(5 citation statements)

References 59 publications

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“…Doping ZnO typically involves a modification of the electronic structure of the material by the generation of new electronic states. If these electronic states fall in the bandgap region, new electronic transitions upon light excitation are allowed, resulting in fluorescence emission [52].…”

Section: Optical Magnetic and Piezoelectric Characterizationmentioning

confidence: 99%

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Iron-Doped ZnO Nanoparticles as Multifunctional Nanoplatforms for Theranostics

et al. 2021

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Zinc oxide nanoparticles (ZnO NPs) are currently among the most promising nanomaterials for theranostics. However, they suffer from some drawbacks that could prevent their application in nanomedicine as theranostic agents. The doping of ZnO NPs can be effectively exploited to enhance the already-existing ZnO properties and introduce completely new functionalities in the doped material. Herein, we propose a novel synthetic approach for iron-doped ZnO (Fe:ZnO) NPs as a multifunctional theranostic nanoplatform aimed at cancer cell treatment. Pure ZnO and Fe:ZnO NPs, with two different levels of iron doping, were synthesized by a rapid wet-chemical method and analyzed in terms of morphology, crystal structure and chemical composition. Interestingly, Fe:ZnO NPs featured bioimaging potentialities thanks to superior optical properties and novel magnetic responsiveness. Moreover, iron doping provides a way to enhance the electromechanical behavior of the NPs, which are then expected to show enhanced therapeutic functionalities. Finally, the intrinsic therapeutic potentialities of the NPs were tested in terms of cytotoxicity and cellular uptake with both healthy B lymphocytes and cancerous Burkitt’s lymphoma cells. Furthermore, their biocompatibility was tested with a pancreatic ductal adenocarcinoma cell line (BxPC-3), where the novel properties of the proposed iron-doped ZnO NPs can be potentially exploited for theranostics.

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Section: Optical Magnetic and Piezoelectric Characterizationmentioning

confidence: 99%

“…bandgap region, new electronic transitions upon light excitation are allowed, resulting in fluorescence emission [52].…”

Section: Optical Magnetic and Piezoelectric Characterizationmentioning

confidence: 99%

Iron-Doped ZnO Nanoparticles as Multifunctional Nanoplatforms for Theranostics

et al. 2021

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“…These smaller Au NPs further aggregated due to annealing at higher temperatures (up to 550 °C) as a result of the rapid thermal growth and eventually bigger Au NPs were formed. [41][42][43][44][45]. Several researchers reported that the interstitial Zn, oxygen vacancies and zinc replacing oxygen are generally acting as donors, while the zinc vacancies and oxygen replacing zinc are the acceptors among the different kind of defects in the ZnO lattice [43,44].…”

Section: +  +mentioning

confidence: 99%

Optical limiting applications of resonating plasmonic Au nanoparticles in a dielectric glass medium

et al. 2021

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Plasmonic nanostructures exhibiting high optical nonlinearities are widely used in the rapidly growing modern nanotechnology of nonlinear optics including biomedical applications due to their tunable plasmonic behavior. In this work, we investigate the nonlinear optical properties of uniformly distributed Au nanoparticles (NPs) embedded in pre-synthesized sodium−zinc borate glass by the well-known ion-exchange technique for optical limiting (OL) applications. Various techniques such as optical absorption spectroscopy, x-ray photoelectron spectroscopy, Transmission Electron Microscope (TEM), Photoluminescence, Time of Flight secondary mass spectroscopy and the Z scan technique were used for the characterization of these NPs. TEM confirmed spherically shaped Au NPs with varying sizes of up to 16 nm, in agreement with optical absorption spectroscopy. Nonlinear optical (NLO) properties of these Au NPs were investigated by using an open as well as close aperture Z scan technique which exhibited enhanced optical nonlinearities. The two-photon absorption (2PA) coefficients demonstrated an increasing trend while the OL threshold values demonstrated a decreasing trend as a function of heat treatment. The improved 2PA coefficients and decreased OL threshold values endorsed the Au NPs containing glasses as contending materials for the fabrication of promising optical limiters for the protection of eyes and other sensitive instruments from laser induced damages.

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“…into the photoresponsive materials. [23,24] Moreover, the different heterojunction design (e.g., Z-type/ S-type, etc.) in the photoelectrode can improve the efficiency of exciton separation and increase light absorption.…”

Section: Introductionmentioning

confidence: 99%

Photoresponsive Zinc‐Based Batteries

et al. 2023

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Photoresponsive batteries are an innovative technology that combines conversion and storage of solar energy, providing a potential solution for large‐scale utilization of solar energy while reducing the reliance on traditional energy storage devices to meet the growing demand for energy. In search of more resource‐saving alternatives to lithium‐ion batteries, researchers are turning to zinc, which is abundant and environmentally friendly due to its recyclability. Zinc batteries offer high energy density and aqueous stability, making them a popular choice among researchers. This review summarizes the recent progress in photoresponsive zinc‐based batteries. First, the photoresponsive zinc‐based batteries are categorized into two groups: photoresponsive zinc‐ion batteries and photoresponsive zinc–air batteries. The discussion then focuses on various photoelectrode designs, including some interesting strategies. Finally, the technical challenges associated with photoresponsive zinc‐based batteries are summarized and discussed, and future research directions are proposed.

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Cobalt doping induced shape transformation and its effect on luminescence in zinc oxide rod-like nanostructures

Cited by 23 publications

References 59 publications

Iron-Doped ZnO Nanoparticles as Multifunctional Nanoplatforms for Theranostics

Iron-Doped ZnO Nanoparticles as Multifunctional Nanoplatforms for Theranostics

Optical limiting applications of resonating plasmonic Au nanoparticles in a dielectric glass medium

Photoresponsive Zinc‐Based Batteries

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