Highly reactive lanthanum doped zinc oxide nanofiber photocatalyst for effective decontamination of methyl parathion

Lakshmi, K. C. Seetha; Mathusalini, S.; Arasakumar, T.; Kadirvelu, K.; Mohan, P. S.

doi:10.1007/s10854-017-7125-x

Cited by 17 publications

(6 citation statements)

References 25 publications

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“…Infrared bonding pattern of CQDs and PAN nanofiber was reported in our previous studies (Kanagasubbulakshmi & Kadirvelu, 2019; Lakshmi et al, 2017), the functional group analysis of fabricated scaffold is represented in Figure S3, the stretching at 3344 cm −1 corresponds to amide stretching between CQDs and PAN nanofiber, stretching at 2930 cm −1 for CH group, CN stretching was observed at 2242 cm −1 , carboxyl group from CQDs attributed to stretching at 1666, 1451, and 1357 cm −1 denotes the CH 2 and CN stretching of PAN nanofiber (Othman et al, 2016). The results demonstrated the strong chemical bonding between CQDs and PAN nanofiber that helps to retain the carboxyl functional group on the surface for further applications.…”

Section: Resultssupporting

confidence: 56%

“…The size was found to be 5 nm in average (image j software) and SAED pattern has confirmed the amorphous nature of CQDs that is reported in our previous study (Kanagasubbulakshmi & Kadirvelu, 2019). The physical properties and functional properties were reported in our previous articles (Lakshmi et al, 2017; Lakshmi et al, 2018). In‐situ fabrication of CQDs‐embedded PAN nanofiber was evaluated for morphology, surface, and functional group analysis.…”

Section: Resultsmentioning

confidence: 79%

“…The synthesis and fabrication of CQDs and its physiochemical properties were reported in our recent studies (Kanagasubbulakshmi & Kadirvelu, 2019). The detailed fabrication of PAN nanofiber and its characterization details were already reported in our previous studies (Lakshmi, Kadirvelu, & Mohan, 2018; Lakshmi, Mathusalini, Arasakumar, Kadirvelu, & Mohan, 2017).…”

Section: Methodsmentioning

confidence: 99%

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Carbon quantum dots‐embedded electrospun antimicrobial and fluorescent scaffold for reepithelialization in albino wistar rats

Kanagasubbulakshmi

Lakshmi

Kadirvelu

2020

J Biomedical Materials Res

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A prosthetic scaffold development using fluorescent nanofiber is reported for an enhanced reepithelialization in wistar albino rats. In this study, a novel approach was followed to construct the biocompatible fluorescent nanofiber that will be helpful to monitor the tissue regeneration process. Here, a multifunctional carbon quantum dots (CQDs)‐embedded electrospun polyacrylonitrile (PAN) nanofiber was fabricated and characterized using standard laboratory techniques. The biodegradation ability was assessed by simulated body fluid thereby analyzing porosity and water absorption capacity of the material. The fluorescent scaffold was tested for cytotoxicity and antimicrobial activity using bacterial and fibroblast cells and fluorescent stability was analyzed by bioimaging of animal and bacterial cells. Tissue regeneration capability of the developed scaffold was evaluated using wistar albino rats. Unlike biomicking scaffolds, the CQDs‐embedded PAN‐based substrate has given dual support by enhancing reepithelialization without growth factors and acted as an antimicrobial agent to provide contamination free tissue regeneration. Scaffolds were examined by using histostaining techniques and scanning electron microscopy to observe the reepithelialization in the regenerated tissues. The novel approach for developing infection free soft tissue regeneration was found to be phenomenal in scaffold development.

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Section: Resultssupporting

confidence: 56%

Section: Resultsmentioning

confidence: 79%

Section: Methodsmentioning

confidence: 99%

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Carbon quantum dots‐embedded electrospun antimicrobial and fluorescent scaffold for reepithelialization in albino wistar rats

Kanagasubbulakshmi

Lakshmi

Kadirvelu

2020

J Biomedical Materials Res

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“…Lakshmi et al. [53] managed to synthesize La‐doped ZnO under UV radiation using the hydrothermal method. The degradation efficiency obtained was 99.6 % for 60 min using methyl parathion (MP) pollutants.…”

Section: Rare Earth‐doped Zno Photocatalysts With Various Synthesis M...mentioning

confidence: 99%

Advances in Rare Earth‐Doped ZnO Photocatalysts: Enhancing Photogenerated Electron‐Hole Pairs for Radical Atom Generation

Hasanah,

Ikbal,

Tahir

2024

ChemBioEng Reviews

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Zinc oxide (ZnO) is a promising material with a diverse range of applications, spanning gas sensing, photonics, photovoltaics, energy conversion, water splitting, photocatalysis, and transparent trapping. However, ZnO limited responsiveness to visible light affected to low photogenerated electron‐hole pairs (charge), low quantum efficiency, and high recombination of charge. In this review, we are addressing innovative strategies, including incorporation rare earth elements as a trap of electron to reduce recombination charge via ZnO doping from analysis 118 referenced sources. We found that hydrothermal shows very good methods for boosting efficiency up to 100 % within 60‐min. We found that for rare‐earth metals La and Ce as a doping show highest efficiency up to 100 % within 120 min irradiations, means that efficient as a trap for reducing recombination of charge. The potential of rare earth doped ZnO will enhance photogenerated electron‐hole pairs, catalyzing the generation of radical atoms via oxidation and reduction reactions. This review encapsulates the most current findings, it serves as a valuable resource for scholars seeking to advance their understanding of rare earth doped ZnO photocatalysts and developing innovative photocatalytic technologies.

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“…The instrument was operated under optimized conditions of 13.8 kV voltage supply, 1.8 mL/h ow rate, 7% PAN solution, and 12 cm syringe-collector distance. Smooth and awless PAN nano bers were obtained from the collector (Lakshmi et al 2017).…”

Section: Synthesis Of Pan Nano Bersmentioning

confidence: 99%

Photocatalytic degradation of atrazine in aqueous solution using La-doped ZnO/PAN nanofibers

Lakshmi

Kadirvelu

Sivakumar

2022

Environ Sci Pollut Res

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Polyacrylonitrile (PAN)-based modi ed zinc oxide (ZnO) nano bers were synthesized by using electrospinning and hydrothermal techniques. The synthesized nano bers were characterized by eld emission scanning electron microscopy and X-ray photoelectron spectroscopy and evaluated for their ability to promote the photocatalytic degradation of the toxic herbicide atrazine. The degradation conditions were optimized by varying catalyst type, catalyst quantity, pH, light source, and toxic concentration. The degradation products were con rmed by high-performance liquid chromatography and gas chromatography-mass spectrometry (GC-MS) analyses. The extent of mineralization was calculated using total organic carbon and real-time analyses. The diameter of the La-doped ZnO loaded PAN nano bers was larger than that of the ZnO-seeded PAN nano bers. The additional peak at a binding energy of 533 eV in the bonding states of La-doped ZnO/PAN indicated the presence of oxygen vacancies in the ZnO matrix, which could enhance the catalytic activity of the material. Furthermore, the degradation of atrazine depended on all the above reaction parameters. The mass spectrum of the degradation product was recorded and exhibited a molecular ion peak at m/z 187 according to GC-MS. Finally, Ladoped ZnO PAN nano bers proved to be an excellent catalyst for decontaminating atrazine within 1 h and allowed to achieve a 98% degradation e ciency.

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Highly reactive lanthanum doped zinc oxide nanofiber photocatalyst for effective decontamination of methyl parathion

Cited by 17 publications

References 25 publications

Carbon quantum dots‐embedded electrospun antimicrobial and fluorescent scaffold for reepithelialization in albino wistar rats

Carbon quantum dots‐embedded electrospun antimicrobial and fluorescent scaffold for reepithelialization in albino wistar rats

Advances in Rare Earth‐Doped ZnO Photocatalysts: Enhancing Photogenerated Electron‐Hole Pairs for Radical Atom Generation

Photocatalytic degradation of atrazine in aqueous solution using La-doped ZnO/PAN nanofibers

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