Photoluminescence studies of Ce<sup>3+</sup> ion‐doped BiPO<sub>4</sub> phosphor and its photocatalytic activity

Naorem, Ramananda Singh; Singh, N.

doi:10.1111/ijac.13600

Cited by 15 publications

(6 citation statements)

References 43 publications

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“…The energy-hungry free radicals break down the dye Rhodamine B. [56][57][58][59][60][61]64] A greater repelling from the surface product, referred to as the "lotus effect, " is provided by the inclusion of carbon produced from lotus fibre and leaf extract for the reduction. The AC developed from lotus fibre is a unique support in this aspect characterisation the lotus fibre mediated activated carbon is under study.…”

Section: Acà Coàmentioning

confidence: 99%

Photocatalytic Degradation of Toxic Rhodamine B Dye by Green‐Synthesised Activated Carbon‐Supported Cobalt Doped ZnO With Further Assessment of ZnO Nanoparticles in Antimicrobial Applications

Naveenkumar,

Karthikeyan,

Senthilvelan

2024

ChemistrySelect

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This work investigates the synthesis of ZnO nanoparticles, cobalt (Co)‐doped ZnO, and Activated Carbon (AC) ‐Co doped ZnO via green precipitation technique. AC developed from lotus stems and precipitated by lotus leaf extract. Comprehensive structural, optical, and morphological investigations by FT‐IR, XRD, FE‐SEM, EDX, HR‐TEM, UV‐DRS, PL, and XPS studies are used to characterize the photocatalysts. The ZnO nanoparticles are shown to have a hexagonal phase by XRD examination. The results of the FT‐IR analysis proved that specific chemical bonds exist in the ZnO, Co−ZnO, and AC−Co‐doped ZnO nanocomposites. FE‐SEM images revealed spherical morphology with aggregated, randomly distributed particles with an average size range of ZnO, Co−ZnO and AC−Co−ZnO are 59.55, 42.55, 41.16 nm. The band gap energies of ZnO, Co ‐ZnO, and AC−Co‐ ZnO, are found to be 3.10, 2.57, and 1.94 eV, respectively. Rhodamine B is used as a model contaminant to assess the samples under UV‐light driven photocatalytic effectiveness. The photocatalytic degradation efficiency (%) of the pristine ZnO, Co‐doped ZnO, and AC−Co‐doped ZnO catalysts are increased to 61.76, 74.86, and 91.46 % after 140 minutes of under UV‐light irradiation. Degradation rate constant (k) of the AC−Co−ZnO photocatalyst is found to be greater than that of pristine ZnO and Co−ZnO. Due to the synergistic effect of the AC and Co metal dopants and the spherical morphology of the AC−Co−ZnO sample, which boosted UV‐visible light absorption with reduced charge carrier recombination, resulting in outstanding photocatalytic activity. The study also investigated the bioactive effect of the samples on six bacterial species, revealing that the AC−Co‐doped ZnO nanocomposite has the most enhanced inhibitory effects against gram‐positive and gram‐negative bacteria. Consequently, medical wound dressing materials which helps to promote early healing by preventing microbial contamination.

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Section: Acà Coàmentioning

confidence: 99%

Photocatalytic Degradation of Toxic Rhodamine B Dye by Green‐Synthesised Activated Carbon‐Supported Cobalt Doped ZnO With Further Assessment of ZnO Nanoparticles in Antimicrobial Applications

Naveenkumar,

Karthikeyan,

Senthilvelan

2024

ChemistrySelect

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“…These graphs demonstrate that the prepared sample had a low monoclinic phase following the requirements of the standard JCPDS card number 15-0767. Impurities in the sample may be the cause of the peak at 2θ degrees in the diffraction pattern of the 7at.% Pr 3+ -doped BiPO 4 sample (17) . Because it is difficult to see the monoclinic phase in the high-temperature annealed sample, no impurity peak was seen.…”

Section: Xrd Studymentioning

confidence: 99%

“…The emission spectra of the phosphors were used to calculate their colour coordinates, and Table 1 shows the associated co-related colour temperatures. The following is Mc Camy's equation (17) .…”

Section: Cie Studymentioning

confidence: 99%

Optical Properties of AgNPs and BiPO4 :Pr(III) Phosphor and Comparative Studies of Albumins (Local Eggs, Mizoram)

Singh,

Lalrindiki

2023

IJST

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Objectives: This work investigated the photoluminescence behaviour of Pr 3+doped BiPO 4 phosphors synthesised by the co-precipitation method, and the combination of albumin with AgNPs shows the development of the FRET mechanism. Methods: Pr 3+ -doped BiPO 4 phosphors were synthesised by the co-precipitation method, and AgNPs were prepared by the reduction method. The prepared phosphors were characterised by XRD, SEM, FT-IR, UV-vis, and PL spectroscopy techniques. The activity of proteins in the mixing of phosphors and AgNPs was studied through the PL study, leading to the formation of the FRET mechanism. Findings: A monoclinic phase was observed through XRD and FT-IR studies; however, the SEM image showed the agglomeration of the nanoparticles of phosphors. The bands were observed at the 670-750 nm for the emission spectra produced at 3 P 1 → 3 F 4 and 3 P 0 → 3 F 4 transitions, and they were obtained as excitation spectra at 3 P 0,1,2 in 468.6 nm via the photoluminescence study. The decay time of the prepared phosphors was also investigated, with the calculated average lifetime for Pr 3+ (7 at.%) being 0.14572 and the goodness of fit (R 2 ) for the concentration being 0.98939. The CIE chromaticity diagram revealed a nearly white colour emission upon excitation at 468.6 nm. The prepared phosphors may be useful for solidstate lighting. Meanwhile, taking two different types of albumin to show which one got further intensity when mixed with phosphor material and a silver nanoparticle for enhancing the intensity of the mixed sample also shows energy transfer between the excitation and emission spectra of the prepared sample by using a basic FRET mechanism. Novelty: According to the author's knowledge, no comprehensive work was dedicated to the objective of this research. The comparison of albumins of duck and local eggs (Mizoram, India) with phosphors and AgNPs was not shown anywhere, where it will be more applicable in the field of phosphor. Therefore, it is sensible to modify the materials to improve the FRET mechanism for fulfilling the potential of this work.

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“…Photocatalytic activity of the prepared SAOs was higher than TiO 2 photocatalyst due to higher photosensitivity and lower band‐gap of the SAOs compared to TiO 2 . Thus, several phosphors have been used as effective photocatalysts for degradation of different types of pollutants (Eun et al, 2021; Li et al, 2012; Ma et al, 2013; Naorem et al, 2020). In fact, the phosphors are known as luminescence‐assisted photocatalysts which use their long afterglow as a light source to carry out the photocatalytic reaction (Li et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Sonochemical preparation and characterization of Sm‐doped GO/KSrPO₄ nanocomposite photocatalyst for degradation of methylene blue dye

Bajpai

Barai

Bhanvase

et al. 2022

Water Environment Research

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The present work pertains to synthesis of Sm-doped GO/KSrPO 4 (GO/KSrPO 4 : Sm) nanocomposite using ultrasound-assisted method. Successful decoration of graphene oxide sheets with the KSrPO 4 :Sm 3+ phosphor was confirmed using analysis techniques including SEM, EDS, UV/visible spectrometry, XRD, and FTIR of the prepared GO/KSrPO 4 :Sm nanocomposite. Further, photocatalytic activity of this nanocomposite material was studied by examining degradation of methylene blue (MB) dye from water. The effects of several parameters like concentration of Sm 3+ in KSrPO 4 :Sm 3+ phosphor within the GO/KSrPO 4 :Sm nanocomposite photocatalyst, photocatalyst loading, initial dye concentration, pH, and preparation method were evaluated. At a higher concentration of

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Photoluminescence studies of Ce³⁺ ion‐doped BiPO₄ phosphor and its photocatalytic activity

Cited by 15 publications

References 43 publications

Photocatalytic Degradation of Toxic Rhodamine B Dye by Green‐Synthesised Activated Carbon‐Supported Cobalt Doped ZnO With Further Assessment of ZnO Nanoparticles in Antimicrobial Applications

Photocatalytic Degradation of Toxic Rhodamine B Dye by Green‐Synthesised Activated Carbon‐Supported Cobalt Doped ZnO With Further Assessment of ZnO Nanoparticles in Antimicrobial Applications

Optical Properties of AgNPs and BiPO4 :Pr(III) Phosphor and Comparative Studies of Albumins (Local Eggs, Mizoram)

Sonochemical preparation and characterization of Sm‐doped GO/KSrPO₄ nanocomposite photocatalyst for degradation of methylene blue dye

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Photoluminescence studies of Ce3+ ion‐doped BiPO4 phosphor and its photocatalytic activity

Cited by 15 publications

References 43 publications

Photocatalytic Degradation of Toxic Rhodamine B Dye by Green‐Synthesised Activated Carbon‐Supported Cobalt Doped ZnO With Further Assessment of ZnO Nanoparticles in Antimicrobial Applications

Photocatalytic Degradation of Toxic Rhodamine B Dye by Green‐Synthesised Activated Carbon‐Supported Cobalt Doped ZnO With Further Assessment of ZnO Nanoparticles in Antimicrobial Applications

Optical Properties of AgNPs and BiPO4 :Pr(III) Phosphor and Comparative Studies of Albumins (Local Eggs, Mizoram)

Sonochemical preparation and characterization of Sm‐doped GO/KSrPO4 nanocomposite photocatalyst for degradation of methylene blue dye

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Photoluminescence studies of Ce³⁺ ion‐doped BiPO₄ phosphor and its photocatalytic activity

Sonochemical preparation and characterization of Sm‐doped GO/KSrPO₄ nanocomposite photocatalyst for degradation of methylene blue dye