Highly efficient photocatalytic activity of stable manganese-doped zinc oxide (Mn:ZnO) nanofibers via electrospinning method

Baylan, Elif; Yıldırım, Özlem Altıntaş

doi:10.1016/j.mssp.2019.104621

Cited by 43 publications

(25 citation statements)

References 53 publications

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“…They concluded that samples with smaller optical band gaps have a wider light absorption range, which contributes to improved photocatalytic activity. Baylan et al [114] explored ZnO NFs photocatalytic characteristics by doping manganese (0-1 wt%) using the ES process. Since the ionic radius of Zn is less than that of Mn, the X-ray powder diffraction (XRD) analysis shows that the inclusion of Mn reduces the crystallite size of ZnO.…”

Section: Enhancing the Sensitivity By Dopingmentioning

confidence: 99%

Electrospun ZnO Nanofiber Based Resistive Gas/Vapor Sensors -A Review

Prabhu¹,

Chandra²,

Rajendra³

et al. 2022

Eng. Sci.

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Resistive zinc oxide (ZnO) sensors play a pivotal role in detecting various gases and vapors due to their high response, low cost, stability, tunability, and simple fabrication. Hence, it is necessary to know the recent status of research in resistive ZnO sensors. The sensitivity is determined by the reactions at the surface of the nanofiber (NF); therefore, the surface area defines the foremost sensor characteristics. Electrospun metal oxide NFs exhibit a high surface area and unique electrical properties that can be tuned, and they are highly sought as the materials for resistive gas sensors. So far, various strategies are adopted to improve the sensitivity and the selectivity of ZnO NFs. This review summarizes the recent methods utilized by various researchers to improve the sensitivity of the ZnO electrospun metal oxide NF-based resistive gas sensors. Also, it discusses the influence of process parameters on the structure and morphology of ZnO NFs, the mechanism of gas sensing and highlights its improvement through advanced methods. The sensitivity of the NF has been improved through tuning the structure and morphology of NFs and doping. Further, modification of NF sensitivity through functionalization, the addition of carbon nanomaterials, and high-energy irradiation are also discussed. Based on the recent literature, the performance of doped ZnO NF for various gas sensing is highlighted. The outcome of this review gives insight to academic researchers and industry for further investigation and development in resistive gas sensors and its applications.

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Section: Enhancing the Sensitivity By Dopingmentioning

confidence: 99%

Electrospun ZnO Nanofiber Based Resistive Gas/Vapor Sensors -A Review

Prabhu¹,

Chandra²,

Rajendra³

et al. 2022

Eng. Sci.

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“…The generated electrons and holes yield reactive oxygen species (ROS) such as * O 2 and * OH which can cause significant processes such as dye degradation and antibacterial activity. [5,6] Because of its high chemical stability, increased oxidation ability, improved photocatalytic activity, non-toxicity, and biocompatibility, ZnO was chosen as the photocatalyst to insert into the electrospun nanofiber membrane in this study., [7,[8][9][10] ZnO generally has a large band gap of ~3.37 eV with ~60 MeV exciton binding energy. [11,12] Overall, because of the aforementioned features, ZnO has been used in a wide variety of industries such as medicine carriers, cosmetics, fillers, gas sensors, spintronics, biosensors, photocatalysis, and among others.…”

Section: Introductionmentioning

confidence: 99%

Visible‐Light‐Active Electrospun Membranes Based on Cobalt‐Doped ZnO Nanohybrids: Applications for Food Packaging

Deshapriya,

Munaweera

2024

ChemistrySelect

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A cellulose acetate electrospun membrane based on Cobalt doped ZnO (Co‐ZnO) was developed. The synthesis of pure zinc oxide nanoparticles (NPs) and cobalt‐zinc oxide nanorods with varying cobalt‐to‐zinc atomic ratios of 5 %, 10 %, 15 %, and 20 % was carried out, using the co‐precipitation method. The successful incorporation of cobalt into ZnO was confirmed by using the techniques of Powder X‐ray Diffraction (PXRD), X‐ray Photoelectron Spectroscopy (XPS), and Energy Dispersive X‐ray Spectroscopy (EDX). Scanning Electron Microscopy (SEM) studies denoted the change in shape from spherical to rod‐shaped upon doping Co. A red shift was observed in band gap energies from 3.26‐3.01 eV upon increasing the Co concentration. The photocatalytic activity was evaluated, using methylene blue under sunlight and a 50 W LED lamp. The most effective photocatalyst observed in this study was a composition consisting of 15 % Co‐ZnO. When exposed to sunshine, this photocatalyst demonstrated a degradation rate of 40 % over a one‐hour period. Similarly, when subjected to a lamp, the degradation rate was found to be 24 % over the same duration. A nanofiber membrane was produced by incorporating Co‐ZnO at a concentration of 15 % (w/w) into the cellulose acetate (CA) polymer matrix by the electrospinning technique. The created CA nanofiber mat with Co‐ZnO was employed to extend the shelf life of strawberries up to 18 days along with the reduced pH increase and lower reduction of weight, firmness, and titratable acidity.

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“…[16][17][18] Recently, some metal elements such as W, Mo, Fe, Cu and Mn have been employed to tune the electronic structure and enhanced the photocatalytic activity of the semiconductor photocatalysts. [19][20][21][22][23][24][25][26][27] For example, Esteves et al found that W 6+ or Mo 6+ doping enhanced the photocatalytic activity of Nb 2 O 5 towards methylene blue degradation due to the delay in the recombination time of excitons. 19 Ma et al reported the highest Rhodamine B degradation efficiency under visible light irradiation for a WO 3 nanober sample containing 2% Cu 2+ in their research results and the substitution of W 6+ ions in the WO 3 lattice by Cu 2+ ions was favored.…”

Section: Introductionmentioning

confidence: 99%

“… 20 Baylan et al used a electrospinning process to prepare Mn-doped ZnO nanofibers and studied the effect of Mn 2+ and Mn 4+ doping concentration on the photoactivity of methylene blue degradation. 21 Hu et al studied the co-doping effect of N and Fe on nano-scaled TiO 2 , which improved the activity under both visible and UV lights irradiation. 22 Among these elements, Fe 3+ doping has attracted special attention.…”

Section: Introductionmentioning

confidence: 99%

Facile fabrication of Fe-doped Nb₂O₅ nanofibers by an electrospinning process and their application in photocatalysis

Wang

Han

et al. 2021

RSC Adv.

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Highly efficient photocatalytic activity of stable manganese-doped zinc oxide (Mn:ZnO) nanofibers via electrospinning method

Cited by 43 publications

References 53 publications

Electrospun ZnO Nanofiber Based Resistive Gas/Vapor Sensors -A Review

Electrospun ZnO Nanofiber Based Resistive Gas/Vapor Sensors -A Review

Visible‐Light‐Active Electrospun Membranes Based on Cobalt‐Doped ZnO Nanohybrids: Applications for Food Packaging

Facile fabrication of Fe-doped Nb₂O₅ nanofibers by an electrospinning process and their application in photocatalysis

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Highly efficient photocatalytic activity of stable manganese-doped zinc oxide (Mn:ZnO) nanofibers via electrospinning method

Cited by 43 publications

References 53 publications

Electrospun ZnO Nanofiber Based Resistive Gas/Vapor Sensors -A Review

Electrospun ZnO Nanofiber Based Resistive Gas/Vapor Sensors -A Review

Visible‐Light‐Active Electrospun Membranes Based on Cobalt‐Doped ZnO Nanohybrids: Applications for Food Packaging

Facile fabrication of Fe-doped Nb2O5 nanofibers by an electrospinning process and their application in photocatalysis

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Facile fabrication of Fe-doped Nb₂O₅ nanofibers by an electrospinning process and their application in photocatalysis